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/loops/insertion_sort_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:24:20,894 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:24:20,897 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:24:20,912 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:24:20,912 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:24:20,913 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:24:20,915 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:24:20,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:24:20,918 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:24:20,919 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:24:20,920 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:24:20,920 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:24:20,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:24:20,922 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:24:20,923 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:24:20,924 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:24:20,925 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:24:20,927 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:24:20,928 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:24:20,930 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:24:20,931 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:24:20,933 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:24:20,935 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 12:24:20,954 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 12:24:20,984 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:24:20,984 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:24:20,986 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:24:20,986 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:24:20,986 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:24:20,986 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:24:20,987 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 12:24:20,987 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:24:20,987 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 12:24:20,987 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:24:20,987 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:24:20,987 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:24:20,988 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:24:20,988 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:24:20,989 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:24:20,989 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:24:20,989 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:24:20,989 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:24:20,989 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:24:20,990 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:24:20,990 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:24:20,990 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:24:20,991 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:24:20,991 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:24:20,991 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:24:20,991 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:24:20,991 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:24:20,992 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:24:20,992 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:24:20,992 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:24:20,992 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:24:20,992 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:24:20,993 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:24:20,993 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:24:20,993 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:24:20,993 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:24:21,041 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:24:21,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:24:21,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:24:21,068 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:24:21,068 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:24:21,071 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/insertion_sort_true-unreach-call_true-termination.i [2018-10-24 12:24:21,140 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8b920c320/31c862b0674a431288b7676bf194b457/FLAG7b64781de [2018-10-24 12:24:21,636 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:24:21,636 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort_true-unreach-call_true-termination.i [2018-10-24 12:24:21,642 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8b920c320/31c862b0674a431288b7676bf194b457/FLAG7b64781de [2018-10-24 12:24:21,656 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8b920c320/31c862b0674a431288b7676bf194b457 [2018-10-24 12:24:21,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:24:21,668 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:24:21,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:24:21,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:24:21,673 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:24:21,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:24:21" (1/1) ... [2018-10-24 12:24:21,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21, skipping insertion in model container [2018-10-24 12:24:21,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:24:21" (1/1) ... [2018-10-24 12:24:21,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:24:21,707 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:24:21,919 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:24:21,924 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:24:21,955 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:24:21,981 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:24:21,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21 WrapperNode [2018-10-24 12:24:21,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:24:21,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:24:21,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:24:21,983 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:24:21,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21" (1/1) ... [2018-10-24 12:24:22,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21" (1/1) ... [2018-10-24 12:24:22,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:24:22,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:24:22,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:24:22,045 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:24:22,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21" (1/1) ... [2018-10-24 12:24:22,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21" (1/1) ... [2018-10-24 12:24:22,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21" (1/1) ... [2018-10-24 12:24:22,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21" (1/1) ... [2018-10-24 12:24:22,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21" (1/1) ... [2018-10-24 12:24:22,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21" (1/1) ... [2018-10-24 12:24:22,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21" (1/1) ... [2018-10-24 12:24:22,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:24:22,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:24:22,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:24:22,106 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:24:22,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21" (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 12:24:22,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:24:22,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:24:22,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:24:22,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:24:22,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:24:22,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:24:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:24:22,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:24:22,702 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:24:22,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:24:22 BoogieIcfgContainer [2018-10-24 12:24:22,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:24:22,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:24:22,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:24:22,707 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:24:22,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:24:21" (1/3) ... [2018-10-24 12:24:22,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ace721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:24:22, skipping insertion in model container [2018-10-24 12:24:22,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:21" (2/3) ... [2018-10-24 12:24:22,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ace721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:24:22, skipping insertion in model container [2018-10-24 12:24:22,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:24:22" (3/3) ... [2018-10-24 12:24:22,712 INFO L112 eAbstractionObserver]: Analyzing ICFG insertion_sort_true-unreach-call_true-termination.i [2018-10-24 12:24:22,722 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:24:22,731 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:24:22,747 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:24:22,780 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:24:22,781 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:24:22,781 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:24:22,781 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:24:22,781 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:24:22,781 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:24:22,781 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:24:22,782 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:24:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-10-24 12:24:22,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-24 12:24:22,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:24:22,810 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:24:22,813 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:24:22,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:22,820 INFO L82 PathProgramCache]: Analyzing trace with hash 277130583, now seen corresponding path program 1 times [2018-10-24 12:24:22,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:24:22,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:22,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:24:22,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:22,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:24:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:22,986 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 12:24:22,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:24:22,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:24:22,989 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:24:22,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:24:23,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:24:23,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:24:23,012 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-10-24 12:24:23,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:24:23,038 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2018-10-24 12:24:23,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:24:23,039 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-10-24 12:24:23,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:24:23,047 INFO L225 Difference]: With dead ends: 56 [2018-10-24 12:24:23,048 INFO L226 Difference]: Without dead ends: 26 [2018-10-24 12:24:23,052 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:24:23,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-24 12:24:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-24 12:24:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-24 12:24:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-10-24 12:24:23,090 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2018-10-24 12:24:23,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:24:23,091 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-10-24 12:24:23,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:24:23,091 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-10-24 12:24:23,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-24 12:24:23,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:24:23,092 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:24:23,093 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:24:23,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:23,093 INFO L82 PathProgramCache]: Analyzing trace with hash -32556863, now seen corresponding path program 1 times [2018-10-24 12:24:23,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:24:23,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:23,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:24:23,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:23,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:24:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:23,363 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 12:24:23,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:24:23,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 12:24:23,363 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:24:23,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:24:23,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:24:23,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:24:23,366 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2018-10-24 12:24:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:24:23,516 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2018-10-24 12:24:23,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:24:23,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-10-24 12:24:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:24:23,518 INFO L225 Difference]: With dead ends: 48 [2018-10-24 12:24:23,518 INFO L226 Difference]: Without dead ends: 34 [2018-10-24 12:24:23,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 12:24:23,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-24 12:24:23,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2018-10-24 12:24:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-24 12:24:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-10-24 12:24:23,526 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 15 [2018-10-24 12:24:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:24:23,526 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-10-24 12:24:23,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:24:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-10-24 12:24:23,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-24 12:24:23,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:24:23,528 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, 1] [2018-10-24 12:24:23,528 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:24:23,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:23,528 INFO L82 PathProgramCache]: Analyzing trace with hash 894306866, now seen corresponding path program 1 times [2018-10-24 12:24:23,528 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:24:23,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:23,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:24:23,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:23,530 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:24:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:24,210 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 19 [2018-10-24 12:24:24,595 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 17 [2018-10-24 12:24:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:24,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:24:24,982 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:24:24,983 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-10-24 12:24:24,989 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [23], [29], [35], [37], [41], [45], [50], [60], [63], [65], [71], [72], [73], [75] [2018-10-24 12:24:25,045 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 12:24:25,046 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:24:25,669 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:24:25,671 INFO L272 AbstractInterpreter]: Visited 22 different actions 70 times. Merged at 12 different actions 36 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-24 12:24:25,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:25,722 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:24:25,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:24:25,722 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 12:24:25,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:24:25,740 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:24:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:25,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:24:26,148 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-10-24 12:24:26,177 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:26,183 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 37 [2018-10-24 12:24:26,184 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:26,193 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:26,204 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:24:26,205 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:27 [2018-10-24 12:24:26,374 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2018-10-24 12:24:26,382 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:26,383 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:26,384 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:26,384 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:26,391 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 43 [2018-10-24 12:24:26,393 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:26,403 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:26,411 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:26,412 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:43, output treesize:3 [2018-10-24 12:24:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:26,508 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:24:28,856 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2018-10-24 12:24:29,041 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2018-10-24 12:24:29,049 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:29,051 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:29,053 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:29,062 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 48 [2018-10-24 12:24:29,065 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-24 12:24:29,073 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:29,075 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:29,075 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:29,088 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 50 [2018-10-24 12:24:29,091 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-10-24 12:24:29,093 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:29,095 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2018-10-24 12:24:29,096 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:29,118 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:29,122 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:29,122 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:45, output treesize:8 [2018-10-24 12:24:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:29,201 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:24:29,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2018-10-24 12:24:29,202 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:24:29,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 12:24:29,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 12:24:29,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=595, Unknown=1, NotChecked=0, Total=702 [2018-10-24 12:24:29,206 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 20 states. [2018-10-24 12:24:30,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:24:30,151 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2018-10-24 12:24:30,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 12:24:30,158 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-10-24 12:24:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:24:30,163 INFO L225 Difference]: With dead ends: 76 [2018-10-24 12:24:30,164 INFO L226 Difference]: Without dead ends: 74 [2018-10-24 12:24:30,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=240, Invalid=1091, Unknown=1, NotChecked=0, Total=1332 [2018-10-24 12:24:30,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-24 12:24:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 45. [2018-10-24 12:24:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-24 12:24:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-10-24 12:24:30,192 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 23 [2018-10-24 12:24:30,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:24:30,193 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-10-24 12:24:30,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 12:24:30,193 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-10-24 12:24:30,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-24 12:24:30,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:24:30,195 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, 1] [2018-10-24 12:24:30,197 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:24:30,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:30,197 INFO L82 PathProgramCache]: Analyzing trace with hash 307500852, now seen corresponding path program 1 times [2018-10-24 12:24:30,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:24:30,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:30,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:24:30,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:30,201 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:24:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:30,444 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 12:24:30,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:24:30,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 12:24:30,445 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:24:30,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 12:24:30,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 12:24:30,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:24:30,446 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2018-10-24 12:24:30,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:24:30,495 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2018-10-24 12:24:30,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:24:30,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-10-24 12:24:30,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:24:30,506 INFO L225 Difference]: With dead ends: 90 [2018-10-24 12:24:30,507 INFO L226 Difference]: Without dead ends: 53 [2018-10-24 12:24:30,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 12:24:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-24 12:24:30,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2018-10-24 12:24:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-24 12:24:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-10-24 12:24:30,521 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 23 [2018-10-24 12:24:30,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:24:30,521 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-10-24 12:24:30,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 12:24:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-10-24 12:24:30,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-24 12:24:30,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:24:30,527 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] [2018-10-24 12:24:30,527 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:24:30,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:30,527 INFO L82 PathProgramCache]: Analyzing trace with hash 692568650, now seen corresponding path program 1 times [2018-10-24 12:24:30,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:24:30,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:30,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:24:30,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:30,532 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:24:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:31,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:24:31,302 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:24:31,302 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-10-24 12:24:31,303 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [23], [25], [29], [31], [35], [37], [41], [45], [50], [60], [63], [65], [71], [72], [73], [75] [2018-10-24 12:24:31,305 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 12:24:31,305 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:24:31,632 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:24:31,632 INFO L272 AbstractInterpreter]: Visited 24 different actions 110 times. Merged at 14 different actions 59 times. Widened at 3 different actions 4 times. Found 13 fixpoints after 8 different actions. Largest state had 39 variables. [2018-10-24 12:24:31,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:31,664 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:24:31,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:24:31,664 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 12:24:31,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:24:31,672 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:24:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:31,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:24:31,849 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 36 [2018-10-24 12:24:31,866 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:31,868 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 53 [2018-10-24 12:24:31,869 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:31,897 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:31,912 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:31,913 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:54, output treesize:47 [2018-10-24 12:24:32,019 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:32,020 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2018-10-24 12:24:32,027 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:32,031 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:32,033 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 61 [2018-10-24 12:24:32,035 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:32,047 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:32,058 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:24:32,059 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:35 [2018-10-24 12:24:32,208 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2018-10-24 12:24:32,245 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:32,246 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-10-24 12:24:32,247 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:32,269 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:32,292 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:32,292 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:5 [2018-10-24 12:24:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:32,508 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:24:34,860 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 62 [2018-10-24 12:24:34,872 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:34,875 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 69 [2018-10-24 12:24:34,959 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:34,960 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:34,961 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:34,962 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:34,964 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:34,968 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:34,980 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 78 [2018-10-24 12:24:34,983 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-10-24 12:24:34,992 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:34,995 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:34,996 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:34,998 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:34,999 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:35,021 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 83 [2018-10-24 12:24:35,026 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-10-24 12:24:35,061 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:35,076 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:35,077 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:35,087 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 47 [2018-10-24 12:24:35,089 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:35,146 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:35,152 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:35,158 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:35,159 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 4 variables, input treesize:72, output treesize:13 [2018-10-24 12:24:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:35,353 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:24:35,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2018-10-24 12:24:35,353 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:24:35,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 12:24:35,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 12:24:35,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=708, Unknown=1, NotChecked=0, Total=812 [2018-10-24 12:24:35,355 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 20 states. [2018-10-24 12:24:35,592 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-24 12:24:36,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:24:36,712 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2018-10-24 12:24:36,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 12:24:36,713 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2018-10-24 12:24:36,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:24:36,715 INFO L225 Difference]: With dead ends: 121 [2018-10-24 12:24:36,715 INFO L226 Difference]: Without dead ends: 84 [2018-10-24 12:24:36,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=245, Invalid=1394, Unknown=1, NotChecked=0, Total=1640 [2018-10-24 12:24:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-24 12:24:36,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 48. [2018-10-24 12:24:36,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-24 12:24:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2018-10-24 12:24:36,726 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 27 [2018-10-24 12:24:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:24:36,727 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2018-10-24 12:24:36,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 12:24:36,727 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2018-10-24 12:24:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-24 12:24:36,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:24:36,728 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 12:24:36,729 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:24:36,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:36,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1150796076, now seen corresponding path program 1 times [2018-10-24 12:24:36,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:24:36,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:36,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:24:36,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:36,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:24:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:37,078 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:24:37,078 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:24:37,078 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-10-24 12:24:37,079 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [23], [29], [35], [37], [41], [45], [50], [52], [54], [60], [63], [65], [68], [70], [71], [72], [73], [75], [76] [2018-10-24 12:24:37,081 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 12:24:37,081 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:24:37,248 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:24:37,248 INFO L272 AbstractInterpreter]: Visited 27 different actions 116 times. Merged at 15 different actions 56 times. Widened at 2 different actions 3 times. Found 5 fixpoints after 4 different actions. Largest state had 39 variables. [2018-10-24 12:24:37,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:37,281 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:24:37,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:24:37,282 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 12:24:37,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:24:37,298 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:24:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:37,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:24:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:37,443 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:24:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:40,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:24:40,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2018-10-24 12:24:40,821 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:24:40,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 12:24:40,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 12:24:40,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=99, Unknown=1, NotChecked=0, Total=132 [2018-10-24 12:24:40,823 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 9 states. [2018-10-24 12:24:41,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:24:41,129 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2018-10-24 12:24:41,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 12:24:41,130 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2018-10-24 12:24:41,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:24:41,131 INFO L225 Difference]: With dead ends: 69 [2018-10-24 12:24:41,132 INFO L226 Difference]: Without dead ends: 46 [2018-10-24 12:24:41,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=54, Invalid=155, Unknown=1, NotChecked=0, Total=210 [2018-10-24 12:24:41,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-24 12:24:41,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2018-10-24 12:24:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-24 12:24:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-10-24 12:24:41,139 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2018-10-24 12:24:41,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:24:41,139 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-10-24 12:24:41,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 12:24:41,139 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-10-24 12:24:41,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-24 12:24:41,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:24:41,140 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:24:41,141 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:24:41,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:41,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1621042525, now seen corresponding path program 2 times [2018-10-24 12:24:41,141 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:24:41,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:41,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:24:41,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:41,142 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:24:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:41,803 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 21 [2018-10-24 12:24:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:42,015 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:24:42,015 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:24:42,015 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:24:42,016 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:24:42,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:24:42,016 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 12:24:42,026 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:24:42,026 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-24 12:24:42,060 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-24 12:24:42,060 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:24:42,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:24:42,291 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-10-24 12:24:42,323 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:42,346 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-10-24 12:24:42,346 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:42,354 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:42,362 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:42,363 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:26 [2018-10-24 12:24:42,472 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2018-10-24 12:24:42,475 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:42,476 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:42,477 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:42,482 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 46 [2018-10-24 12:24:42,483 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:42,495 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:42,505 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:42,505 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:20 [2018-10-24 12:24:42,528 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2018-10-24 12:24:42,531 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-10-24 12:24:42,532 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:42,534 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:42,535 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:42,536 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-10-24 12:24:42,556 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:42,556 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:24:44,964 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2018-10-24 12:24:44,966 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:44,969 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 50 [2018-10-24 12:24:45,148 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2018-10-24 12:24:45,153 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,156 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,156 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,159 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,159 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,180 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 83 [2018-10-24 12:24:45,185 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 4 xjuncts. [2018-10-24 12:24:45,187 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:24:45,187 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:45,190 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,192 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,192 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,194 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,195 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,213 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 81 [2018-10-24 12:24:45,217 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2018-10-24 12:24:45,221 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,237 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 52 [2018-10-24 12:24:45,239 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 4 xjuncts. [2018-10-24 12:24:45,241 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,244 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,245 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,247 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,247 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,269 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 81 [2018-10-24 12:24:45,272 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-10-24 12:24:45,277 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,279 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,279 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,280 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,281 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:45,299 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 83 [2018-10-24 12:24:45,303 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-10-24 12:24:45,309 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:24:45,309 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:45,380 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-24 12:24:45,399 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-24 12:24:45,435 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-24 12:24:45,436 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 4 variables, input treesize:62, output treesize:49 [2018-10-24 12:24:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:47,617 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:24:47,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 34 [2018-10-24 12:24:47,617 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:24:47,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 12:24:47,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 12:24:47,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=976, Unknown=2, NotChecked=0, Total=1122 [2018-10-24 12:24:47,622 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 20 states. [2018-10-24 12:24:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:24:48,609 INFO L93 Difference]: Finished difference Result 116 states and 137 transitions. [2018-10-24 12:24:48,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 12:24:48,610 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 31 [2018-10-24 12:24:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:24:48,612 INFO L225 Difference]: With dead ends: 116 [2018-10-24 12:24:48,612 INFO L226 Difference]: Without dead ends: 96 [2018-10-24 12:24:48,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=343, Invalid=1817, Unknown=2, NotChecked=0, Total=2162 [2018-10-24 12:24:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-24 12:24:48,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 63. [2018-10-24 12:24:48,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-24 12:24:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2018-10-24 12:24:48,623 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 31 [2018-10-24 12:24:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:24:48,624 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2018-10-24 12:24:48,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 12:24:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2018-10-24 12:24:48,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-24 12:24:48,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:24:48,625 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:24:48,626 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:24:48,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:48,626 INFO L82 PathProgramCache]: Analyzing trace with hash -693836487, now seen corresponding path program 1 times [2018-10-24 12:24:48,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:24:48,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:48,627 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:24:48,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:48,628 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:24:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:49,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:24:49,461 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:24:49,461 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-10-24 12:24:49,461 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [23], [29], [31], [35], [37], [41], [45], [50], [60], [63], [65], [71], [72], [73], [75] [2018-10-24 12:24:49,463 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 12:24:49,463 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:24:49,665 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:24:49,666 INFO L272 AbstractInterpreter]: Visited 23 different actions 83 times. Merged at 13 different actions 44 times. Widened at 2 different actions 2 times. Found 6 fixpoints after 4 different actions. Largest state had 39 variables. [2018-10-24 12:24:49,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:49,707 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:24:49,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:24:49,707 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:24:49,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:24:49,721 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:24:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:49,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:24:50,025 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-10-24 12:24:50,033 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:50,035 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 37 [2018-10-24 12:24:50,036 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:50,042 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:50,053 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:24:50,054 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:27 [2018-10-24 12:24:50,130 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2018-10-24 12:24:50,135 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:50,136 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:50,154 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:50,180 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:50,194 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 43 [2018-10-24 12:24:50,195 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:50,206 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:50,212 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:50,212 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:43, output treesize:3 [2018-10-24 12:24:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:50,227 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:24:50,440 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2018-10-24 12:24:50,486 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:50,488 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:50,489 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:50,498 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 43 [2018-10-24 12:24:50,500 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-24 12:24:50,503 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:50,504 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:50,505 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:50,514 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 45 [2018-10-24 12:24:50,516 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-10-24 12:24:50,518 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:50,520 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2018-10-24 12:24:50,520 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:50,541 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:24:50,548 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:24:50,549 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:45, output treesize:10 [2018-10-24 12:24:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:50,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:24:50,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 31 [2018-10-24 12:24:50,735 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:24:50,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-24 12:24:50,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-24 12:24:50,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2018-10-24 12:24:50,737 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 24 states. [2018-10-24 12:24:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:24:52,634 INFO L93 Difference]: Finished difference Result 181 states and 219 transitions. [2018-10-24 12:24:52,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-24 12:24:52,634 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 35 [2018-10-24 12:24:52,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:24:52,636 INFO L225 Difference]: With dead ends: 181 [2018-10-24 12:24:52,637 INFO L226 Difference]: Without dead ends: 161 [2018-10-24 12:24:52,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=643, Invalid=3389, Unknown=0, NotChecked=0, Total=4032 [2018-10-24 12:24:52,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-24 12:24:52,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 92. [2018-10-24 12:24:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-24 12:24:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2018-10-24 12:24:52,653 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 35 [2018-10-24 12:24:52,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:24:52,653 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2018-10-24 12:24:52,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-24 12:24:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2018-10-24 12:24:52,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-24 12:24:52,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:24:52,655 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:24:52,655 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:24:52,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:24:52,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1601373509, now seen corresponding path program 2 times [2018-10-24 12:24:52,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:24:52,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:52,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:24:52,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:24:52,657 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:24:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:24:53,328 WARN L179 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-10-24 12:24:53,552 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2018-10-24 12:24:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:53,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:24:53,987 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:24:53,987 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:24:53,987 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:24:53,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:24:53,987 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:24:53,999 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:24:53,999 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-24 12:24:54,033 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-24 12:24:54,033 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:24:54,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:24:54,147 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 36 [2018-10-24 12:24:54,150 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:54,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 53 [2018-10-24 12:24:54,154 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:54,163 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:54,179 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:54,179 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:54, output treesize:47 [2018-10-24 12:24:54,219 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:54,220 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 53 [2018-10-24 12:24:54,232 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:54,234 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:54,235 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 58 [2018-10-24 12:24:54,237 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:54,247 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:54,257 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:54,258 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:57, output treesize:29 [2018-10-24 12:24:54,356 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-10-24 12:24:54,358 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:54,360 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:54,361 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:54,363 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:54,366 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 53 [2018-10-24 12:24:54,367 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:54,376 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:54,386 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:54,386 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:19 [2018-10-24 12:24:54,428 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2018-10-24 12:24:54,431 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:24:54,431 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-10-24 12:24:54,432 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:24:54,433 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:54,434 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:24:54,434 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:5 [2018-10-24 12:24:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:24:54,456 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:24:59,160 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 68 [2018-10-24 12:24:59,163 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,165 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 75 [2018-10-24 12:24:59,177 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,179 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,180 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,181 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 72 [2018-10-24 12:24:59,268 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,268 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,271 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,272 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,273 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,281 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,294 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 83 [2018-10-24 12:24:59,296 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-10-24 12:24:59,323 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,337 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,382 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,397 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,406 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,505 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,505 INFO L303 Elim1Store]: Index analysis took 207 ms [2018-10-24 12:24:59,677 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 81 [2018-10-24 12:24:59,679 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2018-10-24 12:24:59,751 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,820 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,820 INFO L303 Elim1Store]: Index analysis took 140 ms [2018-10-24 12:24:59,956 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 55 [2018-10-24 12:24:59,958 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 3 xjuncts. [2018-10-24 12:24:59,984 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:24:59,996 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,048 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,058 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,076 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,175 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,175 INFO L303 Elim1Store]: Index analysis took 216 ms [2018-10-24 12:25:00,351 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 83 [2018-10-24 12:25:00,354 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-10-24 12:25:00,380 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,394 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,457 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,466 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,479 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,583 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,583 INFO L303 Elim1Store]: Index analysis took 228 ms [2018-10-24 12:25:00,683 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 84 [2018-10-24 12:25:00,685 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-10-24 12:25:00,689 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:25:00,689 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:00,693 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,694 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,698 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,699 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,700 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,709 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:00,725 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 81 [2018-10-24 12:25:00,727 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2018-10-24 12:25:00,848 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-24 12:25:00,886 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-24 12:25:00,920 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-24 12:25:00,963 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-24 12:25:00,964 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 5 variables, input treesize:87, output treesize:46 [2018-10-24 12:25:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:25:03,087 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:25:03,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 16] total 37 [2018-10-24 12:25:03,087 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:25:03,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 12:25:03,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 12:25:03,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1182, Unknown=2, NotChecked=0, Total=1332 [2018-10-24 12:25:03,089 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand 23 states. [2018-10-24 12:25:03,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:25:03,960 INFO L93 Difference]: Finished difference Result 141 states and 168 transitions. [2018-10-24 12:25:03,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 12:25:03,960 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2018-10-24 12:25:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:25:03,962 INFO L225 Difference]: With dead ends: 141 [2018-10-24 12:25:03,962 INFO L226 Difference]: Without dead ends: 120 [2018-10-24 12:25:03,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=232, Invalid=1658, Unknown=2, NotChecked=0, Total=1892 [2018-10-24 12:25:03,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-24 12:25:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 95. [2018-10-24 12:25:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-24 12:25:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2018-10-24 12:25:03,974 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 35 [2018-10-24 12:25:03,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:25:03,975 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2018-10-24 12:25:03,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-24 12:25:03,975 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2018-10-24 12:25:03,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-24 12:25:03,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:25:03,979 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:25:03,979 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:25:03,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:25:03,979 INFO L82 PathProgramCache]: Analyzing trace with hash 99245443, now seen corresponding path program 2 times [2018-10-24 12:25:03,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:25:03,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:03,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:25:03,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:03,981 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:25:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:25:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:25:04,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:25:04,513 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:25:04,513 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:25:04,513 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:25:04,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:25:04,514 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:25:04,522 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:25:04,522 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-24 12:25:04,567 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-24 12:25:04,568 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:25:04,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:25:04,753 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-10-24 12:25:04,756 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:04,759 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 27 [2018-10-24 12:25:04,760 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:04,772 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:04,780 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:04,781 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2018-10-24 12:25:05,004 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2018-10-24 12:25:05,008 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-10-24 12:25:05,008 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:05,011 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:05,012 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:05,013 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-10-24 12:25:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:25:05,065 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:25:05,334 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2018-10-24 12:25:05,386 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:05,387 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:05,391 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:05,400 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 58 [2018-10-24 12:25:05,402 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:05,404 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:05,408 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2018-10-24 12:25:05,409 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:05,412 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:05,412 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:05,415 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:05,423 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 56 [2018-10-24 12:25:05,424 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:05,446 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:05,447 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:05,447 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:47, output treesize:5 [2018-10-24 12:25:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:25:05,483 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:25:05,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 13] total 35 [2018-10-24 12:25:05,483 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:25:05,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-24 12:25:05,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-24 12:25:05,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2018-10-24 12:25:05,485 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand 32 states. [2018-10-24 12:25:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:25:22,918 INFO L93 Difference]: Finished difference Result 145 states and 170 transitions. [2018-10-24 12:25:22,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-24 12:25:22,918 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 40 [2018-10-24 12:25:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:25:22,920 INFO L225 Difference]: With dead ends: 145 [2018-10-24 12:25:22,920 INFO L226 Difference]: Without dead ends: 143 [2018-10-24 12:25:22,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=336, Invalid=2316, Unknown=0, NotChecked=0, Total=2652 [2018-10-24 12:25:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-24 12:25:22,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 105. [2018-10-24 12:25:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-24 12:25:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2018-10-24 12:25:22,935 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 40 [2018-10-24 12:25:22,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:25:22,935 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2018-10-24 12:25:22,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-24 12:25:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2018-10-24 12:25:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-24 12:25:22,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:25:22,937 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:25:22,937 INFO L424 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:25:22,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:25:22,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1042006481, now seen corresponding path program 3 times [2018-10-24 12:25:22,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:25:22,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:22,939 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:25:22,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:22,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:25:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:25:23,184 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-24 12:25:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:25:23,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:25:23,823 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:25:23,823 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:25:23,824 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:25:23,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:25:23,824 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:25:23,835 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:25:23,835 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-24 12:25:23,868 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:25:23,868 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:25:23,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:25:24,023 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 36 [2018-10-24 12:25:24,050 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:24,054 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 53 [2018-10-24 12:25:24,055 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:24,065 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:24,077 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:24,077 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:44 [2018-10-24 12:25:24,231 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:24,232 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2018-10-24 12:25:24,234 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:24,237 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:24,238 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 61 [2018-10-24 12:25:24,240 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:24,249 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:24,260 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:25:24,261 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:35 [2018-10-24 12:25:24,298 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2018-10-24 12:25:24,300 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:24,301 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-10-24 12:25:24,301 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:24,302 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:24,304 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:24,304 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:5 [2018-10-24 12:25:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-24 12:25:24,341 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:25:28,622 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 62 [2018-10-24 12:25:28,625 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,627 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 69 [2018-10-24 12:25:28,684 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:25:28,685 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:28,687 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,688 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,688 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,689 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,690 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,690 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,703 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 78 [2018-10-24 12:25:28,704 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:28,718 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,718 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,725 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,726 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,727 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,727 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:28,740 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 78 [2018-10-24 12:25:28,741 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:28,767 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:28,773 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:28,780 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:28,780 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:75, output treesize:16 [2018-10-24 12:25:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-24 12:25:28,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:25:28,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 12] total 34 [2018-10-24 12:25:28,838 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:25:28,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-24 12:25:28,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-24 12:25:28,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=993, Unknown=1, NotChecked=0, Total=1122 [2018-10-24 12:25:28,840 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 25 states. [2018-10-24 12:25:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:25:31,201 INFO L93 Difference]: Finished difference Result 235 states and 286 transitions. [2018-10-24 12:25:31,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-24 12:25:31,201 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 39 [2018-10-24 12:25:31,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:25:31,204 INFO L225 Difference]: With dead ends: 235 [2018-10-24 12:25:31,204 INFO L226 Difference]: Without dead ends: 195 [2018-10-24 12:25:31,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=576, Invalid=3845, Unknown=1, NotChecked=0, Total=4422 [2018-10-24 12:25:31,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-24 12:25:31,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 122. [2018-10-24 12:25:31,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-24 12:25:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 146 transitions. [2018-10-24 12:25:31,220 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 146 transitions. Word has length 39 [2018-10-24 12:25:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:25:31,221 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 146 transitions. [2018-10-24 12:25:31,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-24 12:25:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 146 transitions. [2018-10-24 12:25:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 12:25:31,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:25:31,223 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:25:31,223 INFO L424 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:25:31,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:25:31,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1926599722, now seen corresponding path program 2 times [2018-10-24 12:25:31,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:25:31,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:31,224 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:25:31,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:25:31,224 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:25:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:25:32,378 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2018-10-24 12:25:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:25:32,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:25:32,508 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:25:32,508 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:25:32,508 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:25:32,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:25:32,508 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:25:32,519 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:25:32,519 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-24 12:25:32,571 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-24 12:25:32,571 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:25:32,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:25:32,627 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2018-10-24 12:25:32,633 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:32,635 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 29 [2018-10-24 12:25:32,635 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:32,643 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:32,654 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:25:32,654 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:30 [2018-10-24 12:25:32,732 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-10-24 12:25:32,735 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:32,736 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:32,737 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:32,741 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 43 [2018-10-24 12:25:32,742 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:32,750 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:32,762 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:32,763 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:42, output treesize:24 [2018-10-24 12:25:32,854 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-10-24 12:25:32,872 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:32,873 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:32,874 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:32,878 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 43 [2018-10-24 12:25:32,879 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:32,888 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:32,900 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:32,900 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:24 [2018-10-24 12:25:32,996 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-10-24 12:25:32,998 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:32,999 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:33,001 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:33,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 43 [2018-10-24 12:25:33,006 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:33,017 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:33,027 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:33,027 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:19 [2018-10-24 12:25:33,105 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2018-10-24 12:25:33,108 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-10-24 12:25:33,108 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:33,109 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:33,110 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:33,111 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-10-24 12:25:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:25:33,131 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:25:37,680 WARN L179 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 27 [2018-10-24 12:25:41,832 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 36 [2018-10-24 12:25:48,533 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 55 [2018-10-24 12:25:48,536 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,538 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 62 [2018-10-24 12:25:48,541 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,573 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 85 [2018-10-24 12:25:48,577 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:25:48,577 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:48,623 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,654 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 80 [2018-10-24 12:25:48,924 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 87 [2018-10-24 12:25:48,929 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,930 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,930 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,935 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 47 [2018-10-24 12:25:48,936 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:48,941 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,942 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,942 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,943 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,944 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,944 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,949 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,953 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 72 [2018-10-24 12:25:48,954 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:48,957 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:25:48,957 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:48,960 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,961 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,961 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,962 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,963 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,963 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,968 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,972 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 74 [2018-10-24 12:25:48,973 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:48,976 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,977 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,977 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,978 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,978 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,979 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,983 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:48,987 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 74 [2018-10-24 12:25:48,988 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:49,014 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,014 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,015 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,015 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,016 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,016 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,019 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,024 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 72 [2018-10-24 12:25:49,025 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:49,034 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:25:49,034 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:49,211 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,211 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,215 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,216 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,218 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,218 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,219 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,225 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,251 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 111 [2018-10-24 12:25:49,253 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 8 xjuncts. [2018-10-24 12:25:49,256 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,258 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,259 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,260 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,282 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 75 [2018-10-24 12:25:49,283 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 4 xjuncts. [2018-10-24 12:25:49,413 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,415 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,426 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2018-10-24 12:25:49,427 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2018-10-24 12:25:49,429 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,430 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,431 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,433 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,438 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,453 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 68 [2018-10-24 12:25:49,455 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 4 xjuncts. [2018-10-24 12:25:49,486 INFO L267 ElimStorePlain]: Start of recursive call 6: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:25:49,527 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:49,586 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 50 treesize of output 115 [2018-10-24 12:25:52,968 WARN L179 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 752 DAG size of output: 468 [2018-10-24 12:25:52,978 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:52,978 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:52,983 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:52,986 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:52,988 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:52,991 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,003 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,011 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,023 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:53,063 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 136 [2018-10-24 12:25:53,064 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:25:53,067 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 6 xjuncts. [2018-10-24 12:25:53,071 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,071 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,076 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,078 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,081 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,083 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,089 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,098 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,110 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:53,149 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 138 [2018-10-24 12:25:53,149 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:25:53,153 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 6 xjuncts. [2018-10-24 12:25:53,178 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,191 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,268 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,309 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,344 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,380 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,435 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,562 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,585 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:53,585 INFO L303 Elim1Store]: Index analysis took 431 ms [2018-10-24 12:25:53,628 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 138 [2018-10-24 12:25:53,629 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:25:53,632 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 6 xjuncts. [2018-10-24 12:25:53,635 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,638 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,645 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,657 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:53,689 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 95 [2018-10-24 12:25:53,691 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 4 xjuncts. [2018-10-24 12:25:53,693 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:25:53,694 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-10-24 12:25:53,697 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,698 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,703 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,705 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,707 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,710 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,714 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,721 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,730 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:53,770 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 136 [2018-10-24 12:25:53,771 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:25:53,773 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 6 xjuncts. [2018-10-24 12:25:53,777 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,777 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,782 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,785 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,788 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,790 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,794 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,802 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:53,811 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:25:53,851 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 139 [2018-10-24 12:25:53,852 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:25:53,855 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 6 xjuncts. [2018-10-24 12:25:58,189 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:58,190 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:58,191 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:58,191 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:58,193 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:58,194 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:58,195 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:58,201 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:58,223 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 97 [2018-10-24 12:25:58,225 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 4 xjuncts. [2018-10-24 12:25:58,227 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:58,229 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:58,230 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:58,230 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:25:58,246 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 65 [2018-10-24 12:25:58,247 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:00,066 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:00,067 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:00,067 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:00,070 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2018-10-24 12:26:00,071 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:00,074 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:00,074 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:00,075 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:00,075 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:00,076 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:00,081 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:00,090 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 72 [2018-10-24 12:26:00,092 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:01,681 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:01,681 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:01,682 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:01,683 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:01,692 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 62 [2018-10-24 12:26:01,693 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:01,696 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:01,697 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:01,697 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:01,698 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:01,702 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:01,703 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:01,709 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:01,731 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 98 [2018-10-24 12:26:01,734 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 4 xjuncts. [2018-10-24 12:26:04,800 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:04,802 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:04,804 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:04,832 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 90 [2018-10-24 12:26:04,834 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 8 xjuncts. [2018-10-24 12:26:04,838 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:04,839 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:04,842 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:04,842 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:04,843 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:04,847 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:04,848 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:04,855 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:04,885 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 121 [2018-10-24 12:26:04,888 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 8 xjuncts. [2018-10-24 12:26:06,219 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:06,220 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:06,223 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:06,227 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:06,228 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:06,229 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:06,235 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:06,245 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:06,308 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 59 treesize of output 145 [2018-10-24 12:26:06,309 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-10-24 12:26:06,316 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 28 xjuncts. [2018-10-24 12:26:06,350 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:06,419 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:06,517 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:06,723 INFO L303 Elim1Store]: Index analysis took 405 ms [2018-10-24 12:26:06,814 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 104 [2018-10-24 12:26:06,815 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:26:06,820 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 32 xjuncts. [2018-10-24 12:26:08,752 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:08,752 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:08,754 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:08,756 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:08,760 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:08,778 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 64 [2018-10-24 12:26:08,780 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 4 xjuncts. [2018-10-24 12:26:08,783 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:08,784 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:08,794 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2018-10-24 12:26:08,795 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:09,766 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:09,772 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:09,779 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:09,837 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 116 [2018-10-24 12:26:09,838 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2018-10-24 12:26:09,857 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 128 xjuncts. [2018-10-24 12:26:09,860 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:09,861 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:09,866 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:09,870 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:09,871 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:09,872 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:09,878 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:09,886 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:09,949 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 49 treesize of output 157 [2018-10-24 12:26:09,950 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-24 12:26:10,013 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 212 xjuncts. [2018-10-24 12:26:16,161 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,162 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,162 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,167 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2018-10-24 12:26:16,168 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:16,170 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,171 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,171 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,171 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,172 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,173 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,177 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,181 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 65 [2018-10-24 12:26:16,182 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:16,916 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,917 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,918 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,918 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,919 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,920 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,924 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,928 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 68 [2018-10-24 12:26:16,929 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:16,938 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,938 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,939 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:16,942 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 46 [2018-10-24 12:26:16,943 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:18,830 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:18,831 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:18,833 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:18,835 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:18,839 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,002 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 66 [2018-10-24 12:26:19,003 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 4 xjuncts. [2018-10-24 12:26:19,010 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,012 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,020 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 44 [2018-10-24 12:26:19,021 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:19,597 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,598 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,598 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,599 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,615 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 67 [2018-10-24 12:26:19,617 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:19,642 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,643 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,643 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,644 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,646 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,647 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,654 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:19,681 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 103 [2018-10-24 12:26:19,684 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 8 xjuncts. [2018-10-24 12:26:20,625 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:20,631 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:20,666 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 88 [2018-10-24 12:26:20,669 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 16 xjuncts. [2018-10-24 12:26:20,672 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:20,672 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:20,674 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:20,675 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:20,677 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:20,678 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:20,680 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:20,686 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:20,713 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 118 [2018-10-24 12:26:20,716 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 8 xjuncts. [2018-10-24 12:26:21,234 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,240 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,273 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 95 [2018-10-24 12:26:21,276 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 16 xjuncts. [2018-10-24 12:26:21,279 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,280 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,280 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,280 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,281 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,284 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,285 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,286 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,292 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,316 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 120 [2018-10-24 12:26:21,319 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 4 xjuncts. [2018-10-24 12:26:21,642 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,643 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,643 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,643 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,645 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,646 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,647 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,654 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,675 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 97 [2018-10-24 12:26:21,677 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 4 xjuncts. [2018-10-24 12:26:21,681 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,682 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,683 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,683 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:21,700 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 65 [2018-10-24 12:26:21,700 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:21,916 INFO L267 ElimStorePlain]: Start of recursive call 18: 20 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-10-24 12:26:22,014 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,047 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 83 [2018-10-24 12:26:22,332 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 85 [2018-10-24 12:26:22,336 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,336 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,339 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,344 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,345 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,352 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,394 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 133 [2018-10-24 12:26:22,403 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 23 xjuncts. [2018-10-24 12:26:22,405 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:26:22,405 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:22,407 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:26:22,407 INFO L267 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:22,411 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,412 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,416 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,421 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,422 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,429 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,471 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 133 [2018-10-24 12:26:22,478 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 23 xjuncts. [2018-10-24 12:26:22,480 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,484 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,484 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,511 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 89 [2018-10-24 12:26:22,513 INFO L267 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 8 xjuncts. [2018-10-24 12:26:22,516 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,517 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,519 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,524 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,525 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,531 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,572 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 135 [2018-10-24 12:26:22,580 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 23 xjuncts. [2018-10-24 12:26:22,583 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,584 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,587 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,593 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,594 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,600 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:22,644 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 135 [2018-10-24 12:26:22,651 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 23 xjuncts. [2018-10-24 12:26:23,517 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,518 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,518 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,519 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,519 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,520 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,524 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,528 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 70 [2018-10-24 12:26:23,529 INFO L267 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:23,531 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,531 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,532 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,536 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 48 [2018-10-24 12:26:23,537 INFO L267 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:23,643 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,644 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,645 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,645 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,647 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,652 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,661 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 76 [2018-10-24 12:26:23,662 INFO L267 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:23,666 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:23,699 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 56 [2018-10-24 12:26:23,701 INFO L267 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 4 xjuncts. [2018-10-24 12:26:23,768 INFO L267 ElimStorePlain]: Start of recursive call 54: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-24 12:26:23,831 INFO L267 ElimStorePlain]: Start of recursive call 4: 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-10-24 12:26:23,875 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-10-24 12:26:23,914 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-10-24 12:26:23,970 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-10-24 12:26:23,970 INFO L202 ElimStorePlain]: Needed 65 recursive calls to eliminate 8 variables, input treesize:88, output treesize:54 [2018-10-24 12:26:24,076 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:26:24,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:26:24,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 22] total 40 [2018-10-24 12:26:24,097 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:26:24,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 12:26:24,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 12:26:24,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1359, Unknown=5, NotChecked=0, Total=1560 [2018-10-24 12:26:24,098 INFO L87 Difference]: Start difference. First operand 122 states and 146 transitions. Second operand 21 states. [2018-10-24 12:26:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:26:25,043 INFO L93 Difference]: Finished difference Result 280 states and 343 transitions. [2018-10-24 12:26:25,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-24 12:26:25,044 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 43 [2018-10-24 12:26:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:26:25,047 INFO L225 Difference]: With dead ends: 280 [2018-10-24 12:26:25,047 INFO L226 Difference]: Without dead ends: 228 [2018-10-24 12:26:25,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 54 SyntacticMatches, 14 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=389, Invalid=2258, Unknown=5, NotChecked=0, Total=2652 [2018-10-24 12:26:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-24 12:26:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 130. [2018-10-24 12:26:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-24 12:26:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 156 transitions. [2018-10-24 12:26:25,064 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 156 transitions. Word has length 43 [2018-10-24 12:26:25,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:26:25,065 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 156 transitions. [2018-10-24 12:26:25,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-24 12:26:25,065 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 156 transitions. [2018-10-24 12:26:25,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-24 12:26:25,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:26:25,067 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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 12:26:25,067 INFO L424 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:26:25,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:26:25,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1130767443, now seen corresponding path program 1 times [2018-10-24 12:26:25,067 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:26:25,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:26:25,068 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:26:25,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:26:25,068 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:26:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:26:25,413 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 12:26:25,833 WARN L179 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-10-24 12:26:26,060 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 3 [2018-10-24 12:26:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:26:26,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:26:26,566 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:26:26,566 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2018-10-24 12:26:26,566 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [18], [20], [23], [29], [31], [35], [37], [41], [45], [50], [52], [54], [60], [63], [65], [68], [70], [71], [72], [73], [75], [76] [2018-10-24 12:26:26,569 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 12:26:26,569 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:26:26,752 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:26:26,752 INFO L272 AbstractInterpreter]: Visited 28 different actions 141 times. Merged at 16 different actions 70 times. Widened at 4 different actions 6 times. Found 10 fixpoints after 7 different actions. Largest state had 40 variables. [2018-10-24 12:26:26,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:26:26,778 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:26:26,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:26:26,778 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:26:26,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:26:26,794 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:26:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:26:26,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:26:26,959 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2018-10-24 12:26:26,961 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:26,962 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2018-10-24 12:26:26,963 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:26,972 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:26,981 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:26,982 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:30 [2018-10-24 12:26:27,152 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:27,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2018-10-24 12:26:27,182 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:27,192 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:27,196 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:27,197 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 59 [2018-10-24 12:26:27,197 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:27,208 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:27,218 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:26:27,218 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:49, output treesize:27 [2018-10-24 12:26:31,365 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2018-10-24 12:26:31,366 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:31,367 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:31,368 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:31,369 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:31,370 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:26:31,371 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 52 [2018-10-24 12:26:31,372 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:31,379 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:31,381 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:26:31,381 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:5 [2018-10-24 12:26:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:26:31,425 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:26:35,873 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2018-10-24 12:26:35,875 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,877 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 73 [2018-10-24 12:26:35,959 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,960 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,960 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,961 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,961 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,961 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,962 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,969 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,970 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,972 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 90 [2018-10-24 12:26:35,974 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:35,977 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,977 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,978 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,978 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,978 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,981 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 62 [2018-10-24 12:26:35,981 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:35,985 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,985 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,986 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,986 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,987 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,998 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:35,999 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,001 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,001 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,003 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 90 [2018-10-24 12:26:36,004 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:36,006 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,007 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,007 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,010 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,010 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,011 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,025 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 89 [2018-10-24 12:26:36,026 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-10-24 12:26:36,028 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,029 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,029 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,034 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 51 [2018-10-24 12:26:36,035 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:36,038 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,039 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,039 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,040 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,040 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,040 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,041 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,047 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,048 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,051 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 91 [2018-10-24 12:26:36,052 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:36,055 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,056 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,057 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,057 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,058 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,059 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,059 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:26:36,067 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 84 [2018-10-24 12:26:36,068 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-24 12:26:36,111 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:26:36,125 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:26:36,146 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-24 12:26:36,146 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 5 variables, input treesize:82, output treesize:27 [2018-10-24 12:26:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:26:36,231 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:26:36,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 15] total 37 [2018-10-24 12:26:36,231 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:26:36,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-24 12:26:36,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-24 12:26:36,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1195, Unknown=3, NotChecked=0, Total=1332 [2018-10-24 12:26:36,232 INFO L87 Difference]: Start difference. First operand 130 states and 156 transitions. Second operand 27 states. [2018-10-24 12:27:19,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:27:19,353 INFO L93 Difference]: Finished difference Result 252 states and 304 transitions. [2018-10-24 12:27:19,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-24 12:27:19,354 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 44 [2018-10-24 12:27:19,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:27:19,357 INFO L225 Difference]: With dead ends: 252 [2018-10-24 12:27:19,357 INFO L226 Difference]: Without dead ends: 200 [2018-10-24 12:27:19,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 65 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=314, Invalid=2543, Unknown=5, NotChecked=0, Total=2862 [2018-10-24 12:27:19,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-24 12:27:19,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 148. [2018-10-24 12:27:19,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-24 12:27:19,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 178 transitions. [2018-10-24 12:27:19,373 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 178 transitions. Word has length 44 [2018-10-24 12:27:19,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:27:19,374 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 178 transitions. [2018-10-24 12:27:19,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-24 12:27:19,374 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 178 transitions. [2018-10-24 12:27:19,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 12:27:19,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:27:19,375 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:27:19,376 INFO L424 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:27:19,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:27:19,376 INFO L82 PathProgramCache]: Analyzing trace with hash 596360874, now seen corresponding path program 3 times [2018-10-24 12:27:19,376 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:27:19,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:27:19,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:27:19,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:27:19,377 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:27:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:27:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:27:20,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:27:20,035 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:27:20,035 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:27:20,035 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:27:20,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:27:20,035 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:27:20,043 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:27:20,043 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-24 12:27:20,082 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:27:20,082 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:27:20,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:27:20,154 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-24 12:27:20,157 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-24 12:27:20,157 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:20,159 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:20,166 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:20,167 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:25, output treesize:14 [2018-10-24 12:27:20,264 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2018-10-24 12:27:20,267 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:20,268 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 39 [2018-10-24 12:27:20,269 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:20,274 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:20,282 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:20,283 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:30 [2018-10-24 12:27:20,499 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-10-24 12:27:20,536 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:20,554 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:20,558 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:20,562 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 43 [2018-10-24 12:27:20,562 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:20,570 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:20,582 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:20,583 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:43, output treesize:19 [2018-10-24 12:27:20,599 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2018-10-24 12:27:20,615 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-10-24 12:27:20,616 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:20,617 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:20,618 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:20,618 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:3 [2018-10-24 12:27:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:27:20,637 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:27:45,320 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 74 [2018-10-24 12:27:45,324 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 59 [2018-10-24 12:27:45,324 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:45,394 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 74 [2018-10-24 12:27:45,395 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-10-24 12:27:45,458 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2018-10-24 12:27:45,465 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-24 12:27:45,465 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:45,476 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,478 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2018-10-24 12:27:45,713 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-10-24 12:27:45,716 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:27:45,717 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:45,722 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,738 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 59 [2018-10-24 12:27:45,740 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:45,742 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,743 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,746 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,747 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,748 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,767 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 81 [2018-10-24 12:27:45,769 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:45,772 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,773 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,777 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,777 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,778 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,800 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 86 [2018-10-24 12:27:45,803 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:45,824 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,837 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,892 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,901 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,916 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,976 INFO L303 Elim1Store]: Index analysis took 172 ms [2018-10-24 12:27:45,987 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 81 [2018-10-24 12:27:45,989 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:45,992 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,992 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,996 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,996 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:45,997 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,018 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 83 [2018-10-24 12:27:46,021 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:46,023 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,023 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,026 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,027 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,028 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,051 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 83 [2018-10-24 12:27:46,053 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:46,141 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-24 12:27:46,164 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-24 12:27:46,226 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2018-10-24 12:27:46,232 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,251 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 65 [2018-10-24 12:27:46,401 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-24 12:27:46,404 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,406 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,411 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,416 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,417 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,470 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 124 [2018-10-24 12:27:46,471 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:27:46,480 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 39 xjuncts. [2018-10-24 12:27:46,493 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,494 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,499 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,504 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,505 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,556 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 124 [2018-10-24 12:27:46,556 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:27:46,568 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 39 xjuncts. [2018-10-24 12:27:46,580 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,622 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 91 [2018-10-24 12:27:46,627 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 32 xjuncts. [2018-10-24 12:27:46,629 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:27:46,629 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:46,653 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:27:46,653 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:46,658 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,660 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,665 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,669 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,670 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,720 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 126 [2018-10-24 12:27:46,721 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:27:46,734 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 39 xjuncts. [2018-10-24 12:27:46,770 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,786 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,793 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,797 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,798 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:46,850 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 126 [2018-10-24 12:27:46,850 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-24 12:27:46,860 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 39 xjuncts. [2018-10-24 12:27:48,497 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:48,511 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:48,516 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:48,516 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:48,517 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:48,539 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 90 [2018-10-24 12:27:48,542 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:48,546 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:48,564 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 68 [2018-10-24 12:27:48,565 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:48,729 INFO L267 ElimStorePlain]: Start of recursive call 16: 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-10-24 12:27:48,809 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-10-24 12:27:49,016 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 10 xjuncts. [2018-10-24 12:27:49,020 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 59 [2018-10-24 12:27:49,024 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 13 [2018-10-24 12:27:49,024 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:49,038 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2018-10-24 12:27:49,043 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,046 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 51 [2018-10-24 12:27:49,139 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,155 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,168 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,168 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,169 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,191 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 85 [2018-10-24 12:27:49,194 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:49,196 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:27:49,196 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:49,199 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,200 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,204 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,205 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,206 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,228 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 83 [2018-10-24 12:27:49,229 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:49,235 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,253 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 59 [2018-10-24 12:27:49,254 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:49,257 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,258 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,262 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,263 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,264 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,286 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 85 [2018-10-24 12:27:49,288 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:49,291 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-24 12:27:49,291 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:49,294 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,295 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,300 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,301 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,301 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:49,326 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 83 [2018-10-24 12:27:49,327 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 4 xjuncts. [2018-10-24 12:27:49,446 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-24 12:27:49,476 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-24 12:27:49,510 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-10-24 12:27:49,642 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-10-24 12:27:49,642 INFO L202 ElimStorePlain]: Needed 36 recursive calls to eliminate 8 variables, input treesize:86, output treesize:42 [2018-10-24 12:27:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:27:49,767 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:27:49,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 39 [2018-10-24 12:27:49,767 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:27:49,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-24 12:27:49,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-24 12:27:49,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1316, Unknown=7, NotChecked=0, Total=1482 [2018-10-24 12:27:49,769 INFO L87 Difference]: Start difference. First operand 148 states and 178 transitions. Second operand 24 states. [2018-10-24 12:27:51,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:27:51,140 INFO L93 Difference]: Finished difference Result 303 states and 363 transitions. [2018-10-24 12:27:51,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-24 12:27:51,140 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 43 [2018-10-24 12:27:51,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:27:51,143 INFO L225 Difference]: With dead ends: 303 [2018-10-24 12:27:51,143 INFO L226 Difference]: Without dead ends: 220 [2018-10-24 12:27:51,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 60 SyntacticMatches, 9 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=349, Invalid=2296, Unknown=7, NotChecked=0, Total=2652 [2018-10-24 12:27:51,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-24 12:27:51,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 160. [2018-10-24 12:27:51,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-24 12:27:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 193 transitions. [2018-10-24 12:27:51,161 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 193 transitions. Word has length 43 [2018-10-24 12:27:51,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:27:51,162 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 193 transitions. [2018-10-24 12:27:51,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-24 12:27:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 193 transitions. [2018-10-24 12:27:51,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 12:27:51,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:27:51,163 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:27:51,163 INFO L424 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:27:51,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:27:51,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1833906732, now seen corresponding path program 4 times [2018-10-24 12:27:51,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:27:51,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:27:51,164 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:27:51,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:27:51,164 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:27:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:27:51,364 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-24 12:27:51,578 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-10-24 12:27:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:27:52,154 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:27:52,154 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:27:52,154 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:27:52,155 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:27:52,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:27:52,155 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:27:52,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:27:52,167 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:27:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:27:52,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:27:52,326 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-10-24 12:27:52,329 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-10-24 12:27:52,329 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:52,332 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:52,349 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2018-10-24 12:27:52,351 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-10-24 12:27:52,352 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:52,354 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:52,369 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-24 12:27:52,370 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:57, output treesize:31 [2018-10-24 12:27:52,913 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2018-10-24 12:27:52,916 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:52,918 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:52,919 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 54 [2018-10-24 12:27:52,919 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:52,929 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:52,946 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-24 12:27:52,946 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:50, output treesize:38 [2018-10-24 12:27:53,069 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2018-10-24 12:27:53,073 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:53,074 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:53,075 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:53,077 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:53,081 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 85 [2018-10-24 12:27:53,081 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:53,096 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:53,112 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-24 12:27:53,113 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:56, output treesize:38 [2018-10-24 12:27:53,259 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2018-10-24 12:27:53,262 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:53,264 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:53,265 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:53,267 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:53,270 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 85 [2018-10-24 12:27:53,271 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:53,281 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:53,297 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-24 12:27:53,298 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:57, output treesize:35 [2018-10-24 12:27:53,439 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2018-10-24 12:27:53,443 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:53,444 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:53,445 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:53,445 INFO L682 Elim1Store]: detected equality via solver [2018-10-24 12:27:53,446 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 12:27:53,447 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 51 [2018-10-24 12:27:53,448 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 12:27:53,456 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:53,465 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 12:27:53,465 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:51, output treesize:5 [2018-10-24 12:27:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:27:53,492 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-10-24 12:28:49,330 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 12:28:49,531 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:28:49,531 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 12:28:49,536 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 12:28:49,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:28:49 BoogieIcfgContainer [2018-10-24 12:28:49,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:28:49,538 INFO L168 Benchmark]: Toolchain (without parser) took 267870.31 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 950.5 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -406.1 MB). Peak memory consumption was 544.4 MB. Max. memory is 7.1 GB. [2018-10-24 12:28:49,538 INFO L168 Benchmark]: CDTParser took 0.38 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 12:28:49,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.01 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 12:28:49,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.83 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 12:28:49,539 INFO L168 Benchmark]: Boogie Preprocessor took 62.11 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 12:28:49,539 INFO L168 Benchmark]: RCFGBuilder took 597.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2018-10-24 12:28:49,539 INFO L168 Benchmark]: TraceAbstraction took 266832.72 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 192.9 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 377.2 MB). Peak memory consumption was 570.1 MB. Max. memory is 7.1 GB. [2018-10-24 12:28:49,540 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 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 313.01 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 60.83 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 62.11 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 597.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 266832.72 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 192.9 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 377.2 MB). Peak memory consumption was 570.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 5]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 5). Cancelled while BasicCegarLoop was analyzing trace of length 44 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 46 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. TIMEOUT Result, 266.7s OverallTime, 15 OverallIterations, 4 TraceHistogramMax, 71.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 478 SDtfs, 1290 SDslu, 3962 SDs, 0 SdLazy, 4733 SolverSat, 786 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 59.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1148 GetRequests, 562 SyntacticMatches, 74 SemanticMatches, 512 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 6736 ImplicationChecksByTransitivity, 96.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.7s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 530 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 132.9s InterpolantComputationTime, 836 NumberOfCodeBlocks, 836 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1192 ConstructedInterpolants, 119 QuantifiedInterpolants, 606615 SizeOfPredicates, 334 NumberOfNonLiveVariables, 1989 ConjunctsInSsa, 575 ConjunctsInUnsatCore, 36 InterpolantComputations, 3 PerfectInterpolantSequences, 72/677 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown