java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loops/invert_string_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 04:55:14,696 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 04:55:14,698 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 04:55:14,710 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 04:55:14,711 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 04:55:14,712 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 04:55:14,713 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 04:55:14,715 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 04:55:14,717 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 04:55:14,718 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 04:55:14,719 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 04:55:14,719 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 04:55:14,720 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 04:55:14,721 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 04:55:14,723 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 04:55:14,724 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 04:55:14,724 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 04:55:14,726 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 04:55:14,728 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 04:55:14,730 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 04:55:14,731 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 04:55:14,732 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 04:55:14,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 04:55:14,745 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 04:55:14,761 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 04:55:14,762 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 04:55:14,763 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 04:55:14,763 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 04:55:14,763 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 04:55:14,763 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 04:55:14,764 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 04:55:14,765 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 04:55:14,765 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 04:55:14,765 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 04:55:14,766 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 04:55:14,766 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 04:55:14,767 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 04:55:14,767 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 04:55:14,767 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 04:55:14,767 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 04:55:14,769 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 04:55:14,769 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 04:55:14,769 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 04:55:14,769 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 04:55:14,770 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 04:55:14,770 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 04:55:14,770 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 04:55:14,770 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 04:55:14,770 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:55:14,771 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 04:55:14,771 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 04:55:14,771 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 04:55:14,771 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 04:55:14,772 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 04:55:14,772 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 04:55:14,772 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 04:55:14,772 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 04:55:14,773 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 04:55:14,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 04:55:14,838 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 04:55:14,842 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 04:55:14,844 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 04:55:14,844 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 04:55:14,845 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/invert_string_true-unreach-call_true-termination.i [2018-11-07 04:55:14,913 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b49cc3b8/488f13abe365422cb27916f62454f5a2/FLAGbc2ea432b [2018-11-07 04:55:15,393 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 04:55:15,394 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/invert_string_true-unreach-call_true-termination.i [2018-11-07 04:55:15,403 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b49cc3b8/488f13abe365422cb27916f62454f5a2/FLAGbc2ea432b [2018-11-07 04:55:15,425 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b49cc3b8/488f13abe365422cb27916f62454f5a2 [2018-11-07 04:55:15,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 04:55:15,438 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 04:55:15,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 04:55:15,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 04:55:15,444 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 04:55:15,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:55:15" (1/1) ... [2018-11-07 04:55:15,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673adebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15, skipping insertion in model container [2018-11-07 04:55:15,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:55:15" (1/1) ... [2018-11-07 04:55:15,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 04:55:15,488 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 04:55:15,705 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:55:15,712 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 04:55:15,748 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:55:15,776 INFO L193 MainTranslator]: Completed translation [2018-11-07 04:55:15,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15 WrapperNode [2018-11-07 04:55:15,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 04:55:15,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 04:55:15,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 04:55:15,778 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 04:55:15,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15" (1/1) ... [2018-11-07 04:55:15,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15" (1/1) ... [2018-11-07 04:55:15,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 04:55:15,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 04:55:15,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 04:55:15,811 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 04:55:15,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15" (1/1) ... [2018-11-07 04:55:15,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15" (1/1) ... [2018-11-07 04:55:15,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15" (1/1) ... [2018-11-07 04:55:15,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15" (1/1) ... [2018-11-07 04:55:15,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15" (1/1) ... [2018-11-07 04:55:15,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15" (1/1) ... [2018-11-07 04:55:15,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15" (1/1) ... [2018-11-07 04:55:15,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 04:55:15,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 04:55:15,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 04:55:15,874 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 04:55:15,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:55:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-07 04:55:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 04:55:16,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 04:55:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-07 04:55:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 04:55:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 04:55:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 04:55:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 04:55:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-07 04:55:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 04:55:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 04:55:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-07 04:55:16,602 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 04:55:16,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:55:16 BoogieIcfgContainer [2018-11-07 04:55:16,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 04:55:16,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 04:55:16,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 04:55:16,607 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 04:55:16,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:55:15" (1/3) ... [2018-11-07 04:55:16,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bb4a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:55:16, skipping insertion in model container [2018-11-07 04:55:16,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:15" (2/3) ... [2018-11-07 04:55:16,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bb4a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:55:16, skipping insertion in model container [2018-11-07 04:55:16,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:55:16" (3/3) ... [2018-11-07 04:55:16,611 INFO L112 eAbstractionObserver]: Analyzing ICFG invert_string_true-unreach-call_true-termination.i [2018-11-07 04:55:16,621 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 04:55:16,630 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 04:55:16,650 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 04:55:16,687 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 04:55:16,687 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 04:55:16,688 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 04:55:16,688 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 04:55:16,688 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 04:55:16,688 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 04:55:16,688 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 04:55:16,689 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 04:55:16,711 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-07 04:55:16,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-07 04:55:16,718 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:16,719 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:55:16,722 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:16,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:16,729 INFO L82 PathProgramCache]: Analyzing trace with hash 931697409, now seen corresponding path program 1 times [2018-11-07 04:55:16,732 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:16,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:16,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:55:16,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:16,783 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:55:16,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:55:16,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 04:55:16,908 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:55:16,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 04:55:16,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 04:55:16,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 04:55:16,931 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-07 04:55:16,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:55:16,959 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2018-11-07 04:55:16,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 04:55:16,961 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-07 04:55:16,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:55:16,971 INFO L225 Difference]: With dead ends: 74 [2018-11-07 04:55:16,971 INFO L226 Difference]: Without dead ends: 36 [2018-11-07 04:55:16,975 INFO L604 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 [2018-11-07 04:55:16,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-07 04:55:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-07 04:55:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-07 04:55:17,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-11-07 04:55:17,020 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 22 [2018-11-07 04:55:17,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:55:17,021 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-11-07 04:55:17,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 04:55:17,021 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-11-07 04:55:17,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-07 04:55:17,023 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:17,023 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:55:17,023 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:17,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:17,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1467881940, now seen corresponding path program 1 times [2018-11-07 04:55:17,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:17,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:17,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:55:17,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:17,026 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:55:17,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:55:17,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 04:55:17,454 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:55:17,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 04:55:17,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 04:55:17,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 04:55:17,457 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 5 states. [2018-11-07 04:55:17,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:55:17,734 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2018-11-07 04:55:17,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 04:55:17,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-07 04:55:17,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:55:17,736 INFO L225 Difference]: With dead ends: 56 [2018-11-07 04:55:17,736 INFO L226 Difference]: Without dead ends: 42 [2018-11-07 04:55:17,737 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:55:17,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-07 04:55:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-11-07 04:55:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-07 04:55:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-11-07 04:55:17,745 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 24 [2018-11-07 04:55:17,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:55:17,746 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-11-07 04:55:17,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 04:55:17,746 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-11-07 04:55:17,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-07 04:55:17,747 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:17,747 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:55:17,748 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:17,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:17,748 INFO L82 PathProgramCache]: Analyzing trace with hash 267373412, now seen corresponding path program 1 times [2018-11-07 04:55:17,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:17,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:17,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:55:17,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:17,750 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:18,174 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2018-11-07 04:55:18,445 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 15 [2018-11-07 04:55:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:55:18,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:18,603 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:55:18,604 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-11-07 04:55:18,606 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [8], [12], [15], [25], [26], [30], [33], [35], [36], [37], [38], [40], [44], [48], [53], [54], [55], [68], [71], [73], [79], [80], [81], [83] [2018-11-07 04:55:18,666 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:55:18,667 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:55:18,831 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:55:18,833 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 22 variables. [2018-11-07 04:55:18,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:18,844 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:55:18,946 INFO L227 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 76.16% of their original sizes. [2018-11-07 04:55:18,946 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:55:19,187 INFO L415 sIntCurrentIteration]: We unified 29 AI predicates to 29 [2018-11-07 04:55:19,187 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:55:19,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:55:19,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 04:55:19,189 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:55:19,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:55:19,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:55:19,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:55:19,190 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 6 states. [2018-11-07 04:55:19,250 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:55:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:55:19,755 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2018-11-07 04:55:19,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 04:55:19,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-11-07 04:55:19,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:55:19,758 INFO L225 Difference]: With dead ends: 74 [2018-11-07 04:55:19,758 INFO L226 Difference]: Without dead ends: 50 [2018-11-07 04:55:19,759 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:55:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-07 04:55:19,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2018-11-07 04:55:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-07 04:55:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-11-07 04:55:19,773 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 30 [2018-11-07 04:55:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:55:19,774 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-11-07 04:55:19,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:55:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-11-07 04:55:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-07 04:55:19,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:19,775 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:55:19,776 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:19,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:19,776 INFO L82 PathProgramCache]: Analyzing trace with hash -190039143, now seen corresponding path program 1 times [2018-11-07 04:55:19,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:19,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:19,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:55:19,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:19,778 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:20,263 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 13 [2018-11-07 04:55:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 04:55:20,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:20,280 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:55:20,280 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-11-07 04:55:20,281 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [8], [12], [15], [17], [18], [19], [21], [25], [26], [30], [33], [35], [36], [37], [38], [40], [44], [48], [53], [54], [55], [68], [71], [73], [79], [80], [81], [83] [2018-11-07 04:55:20,286 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:55:20,286 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:55:20,331 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:55:21,566 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 04:55:21,566 INFO L272 AbstractInterpreter]: Visited 33 different actions 373 times. Merged at 14 different actions 297 times. Widened at 2 different actions 35 times. Found 43 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 04:55:21,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:21,612 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 04:55:21,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:21,612 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 04:55:21,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:55:21,627 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 04:55:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:21,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:55:21,762 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 6 treesize of output 5 [2018-11-07 04:55:21,764 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:21,773 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:21,774 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-07 04:55:21,861 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:55:21,863 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:55:21,864 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-07 04:55:21,864 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:21,874 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:21,875 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2018-11-07 04:55:22,246 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2018-11-07 04:55:22,352 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 17 treesize of output 19 [2018-11-07 04:55:22,360 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 14 treesize of output 13 [2018-11-07 04:55:22,361 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:22,370 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:22,389 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:22,389 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:42, output treesize:38 [2018-11-07 04:55:22,946 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2018-11-07 04:55:23,032 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 34 treesize of output 30 [2018-11-07 04:55:23,052 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:55:23,053 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-07 04:55:23,053 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:23,092 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:55:23,093 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-07 04:55:23,093 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:23,123 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:23,133 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:23,133 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:52, output treesize:3 [2018-11-07 04:55:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 04:55:23,239 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:55:24,025 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2018-11-07 04:55:24,080 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2018-11-07 04:55:24,080 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,085 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 36 treesize of output 35 [2018-11-07 04:55:24,086 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,095 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 38 [2018-11-07 04:55:24,096 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,172 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 33 treesize of output 32 [2018-11-07 04:55:24,174 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,177 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 36 treesize of output 35 [2018-11-07 04:55:24,178 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,289 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:55:24,303 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 65 [2018-11-07 04:55:24,394 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 33 [2018-11-07 04:55:24,394 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,459 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 54 [2018-11-07 04:55:24,461 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-11-07 04:55:24,529 INFO L267 ElimStorePlain]: Start of recursive call 8: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:55:24,532 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 51 treesize of output 45 [2018-11-07 04:55:24,569 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 15 treesize of output 15 [2018-11-07 04:55:24,570 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,586 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,598 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 42 treesize of output 36 [2018-11-07 04:55:24,624 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 23 treesize of output 20 [2018-11-07 04:55:24,625 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,627 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 21 treesize of output 19 [2018-11-07 04:55:24,628 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,633 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 18 treesize of output 17 [2018-11-07 04:55:24,634 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,662 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:55:24,809 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 52 treesize of output 46 [2018-11-07 04:55:24,845 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 16 treesize of output 16 [2018-11-07 04:55:24,845 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,860 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,871 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 47 [2018-11-07 04:55:24,960 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 54 [2018-11-07 04:55:24,961 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 2 xjuncts. [2018-11-07 04:55:24,965 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 39 treesize of output 38 [2018-11-07 04:55:24,966 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:24,969 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 35 treesize of output 34 [2018-11-07 04:55:24,970 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:25,047 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 33 [2018-11-07 04:55:25,049 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:25,149 INFO L267 ElimStorePlain]: Start of recursive call 19: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:55:25,154 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 43 treesize of output 37 [2018-11-07 04:55:25,180 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 14 treesize of output 5 [2018-11-07 04:55:25,181 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:25,195 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 9 treesize of output 9 [2018-11-07 04:55:25,196 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:25,209 INFO L267 ElimStorePlain]: Start of recursive call 24: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:55:25,342 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 9 xjuncts. [2018-11-07 04:55:25,342 INFO L202 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:112, output treesize:257 [2018-11-07 04:55:25,503 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-11-07 04:55:25,754 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2018-11-07 04:55:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 04:55:25,830 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 04:55:25,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 13] total 28 [2018-11-07 04:55:25,831 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 04:55:25,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 04:55:25,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 04:55:25,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2018-11-07 04:55:25,834 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 18 states. [2018-11-07 04:55:26,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:55:26,791 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2018-11-07 04:55:26,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 04:55:26,791 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 35 [2018-11-07 04:55:26,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:55:26,793 INFO L225 Difference]: With dead ends: 64 [2018-11-07 04:55:26,793 INFO L226 Difference]: Without dead ends: 50 [2018-11-07 04:55:26,795 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2018-11-07 04:55:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-07 04:55:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2018-11-07 04:55:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-07 04:55:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2018-11-07 04:55:26,803 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 35 [2018-11-07 04:55:26,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:55:26,803 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2018-11-07 04:55:26,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 04:55:26,803 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2018-11-07 04:55:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-07 04:55:26,805 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:26,805 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:55:26,805 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:26,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:26,805 INFO L82 PathProgramCache]: Analyzing trace with hash 206412561, now seen corresponding path program 2 times [2018-11-07 04:55:26,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:26,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:26,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:55:26,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:26,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 04:55:27,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:27,008 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:55:27,008 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 04:55:27,008 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 04:55:27,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:27,008 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:55:27,024 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 04:55:27,025 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 04:55:27,063 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-07 04:55:27,063 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 04:55:27,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:55:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-07 04:55:27,124 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:55:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-07 04:55:27,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 04:55:27,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 04:55:27,214 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 04:55:27,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 04:55:27,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 04:55:27,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 04:55:27,215 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 8 states. [2018-11-07 04:55:28,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:55:28,017 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2018-11-07 04:55:28,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 04:55:28,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-11-07 04:55:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:55:28,021 INFO L225 Difference]: With dead ends: 120 [2018-11-07 04:55:28,021 INFO L226 Difference]: Without dead ends: 90 [2018-11-07 04:55:28,022 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-11-07 04:55:28,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-11-07 04:55:28,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 57. [2018-11-07 04:55:28,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-07 04:55:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-11-07 04:55:28,042 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 41 [2018-11-07 04:55:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:55:28,043 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-11-07 04:55:28,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 04:55:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-11-07 04:55:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-07 04:55:28,044 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:28,044 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 04:55:28,044 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:28,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:28,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1828921100, now seen corresponding path program 3 times [2018-11-07 04:55:28,045 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:28,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:28,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 04:55:28,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:28,046 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 04:55:28,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:28,392 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:55:28,392 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 04:55:28,392 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 04:55:28,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:28,392 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:55:28,402 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-07 04:55:28,402 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-07 04:55:28,429 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-07 04:55:28,430 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 04:55:28,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:55:28,439 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 6 treesize of output 5 [2018-11-07 04:55:28,439 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:28,445 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:28,445 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-07 04:55:28,462 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:55:28,463 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:55:28,463 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-07 04:55:28,464 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:28,467 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:28,467 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2018-11-07 04:55:29,081 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 19 treesize of output 21 [2018-11-07 04:55:29,102 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 16 treesize of output 15 [2018-11-07 04:55:29,103 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:29,106 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:29,119 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:29,120 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:46, output treesize:42 [2018-11-07 04:55:29,471 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 40 treesize of output 36 [2018-11-07 04:55:29,474 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:55:29,475 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-07 04:55:29,476 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:29,488 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:55:29,489 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-11-07 04:55:29,490 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:29,495 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:29,507 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:29,508 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:65, output treesize:3 [2018-11-07 04:55:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 04:55:29,582 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:55:34,001 WARN L179 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 42 [2018-11-07 04:55:34,106 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 65 [2018-11-07 04:55:34,211 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2018-11-07 04:55:34,227 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 1 case distinctions, treesize of input 49 treesize of output 53 [2018-11-07 04:55:34,229 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-07 04:55:34,298 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 54 [2018-11-07 04:55:34,300 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-07 04:55:34,337 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:55:34,342 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 42 treesize of output 36 [2018-11-07 04:55:34,370 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 21 treesize of output 19 [2018-11-07 04:55:34,371 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:34,373 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 18 treesize of output 17 [2018-11-07 04:55:34,374 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:34,376 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 23 treesize of output 20 [2018-11-07 04:55:34,377 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:34,408 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:55:34,412 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 51 treesize of output 45 [2018-11-07 04:55:34,452 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 15 treesize of output 15 [2018-11-07 04:55:34,453 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:34,465 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:34,478 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2018-11-07 04:55:34,550 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 36 treesize of output 35 [2018-11-07 04:55:34,551 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:34,555 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2018-11-07 04:55:34,556 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:34,575 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 38 [2018-11-07 04:55:34,576 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:34,806 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 36 treesize of output 35 [2018-11-07 04:55:34,807 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:34,812 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 33 treesize of output 32 [2018-11-07 04:55:34,812 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:34,865 INFO L267 ElimStorePlain]: Start of recursive call 11: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:55:35,016 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 52 treesize of output 46 [2018-11-07 04:55:35,067 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 16 treesize of output 16 [2018-11-07 04:55:35,068 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:35,081 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:35,092 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 47 [2018-11-07 04:55:35,181 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 39 treesize of output 38 [2018-11-07 04:55:35,182 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:35,193 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 54 [2018-11-07 04:55:35,195 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 2 xjuncts. [2018-11-07 04:55:35,197 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 35 treesize of output 34 [2018-11-07 04:55:35,197 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:35,265 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2018-11-07 04:55:35,266 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:35,355 INFO L267 ElimStorePlain]: Start of recursive call 19: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:55:35,359 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 43 treesize of output 37 [2018-11-07 04:55:35,386 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 14 treesize of output 5 [2018-11-07 04:55:35,386 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:35,403 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 9 treesize of output 9 [2018-11-07 04:55:35,404 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:35,417 INFO L267 ElimStorePlain]: Start of recursive call 24: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:55:35,579 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 9 xjuncts. [2018-11-07 04:55:35,580 INFO L202 ElimStorePlain]: Needed 26 recursive calls to eliminate 4 variables, input treesize:112, output treesize:192 [2018-11-07 04:55:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 04:55:36,150 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 04:55:36,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 20, 17] total 39 [2018-11-07 04:55:36,151 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 04:55:36,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 04:55:36,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 04:55:36,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1305, Unknown=0, NotChecked=0, Total=1482 [2018-11-07 04:55:36,153 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 25 states. [2018-11-07 04:55:38,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:55:38,427 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2018-11-07 04:55:38,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 04:55:38,428 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 52 [2018-11-07 04:55:38,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:55:38,430 INFO L225 Difference]: With dead ends: 110 [2018-11-07 04:55:38,430 INFO L226 Difference]: Without dead ends: 96 [2018-11-07 04:55:38,432 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=454, Invalid=2408, Unknown=0, NotChecked=0, Total=2862 [2018-11-07 04:55:38,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-11-07 04:55:38,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 63. [2018-11-07 04:55:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-07 04:55:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2018-11-07 04:55:38,444 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 52 [2018-11-07 04:55:38,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:55:38,444 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2018-11-07 04:55:38,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-07 04:55:38,445 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2018-11-07 04:55:38,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-07 04:55:38,446 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:38,446 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 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] [2018-11-07 04:55:38,446 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:38,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:38,446 INFO L82 PathProgramCache]: Analyzing trace with hash -526020564, now seen corresponding path program 4 times [2018-11-07 04:55:38,447 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:38,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:38,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 04:55:38,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:38,448 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 04:55:38,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:38,722 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:55:38,722 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 04:55:38,722 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 04:55:38,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:38,722 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:55:38,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:55:38,731 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 04:55:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:38,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:55:38,774 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 6 treesize of output 5 [2018-11-07 04:55:38,775 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:38,848 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:38,849 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-07 04:55:39,062 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:55:39,087 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:55:39,088 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-07 04:55:39,088 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:39,102 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:39,103 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2018-11-07 04:55:39,647 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 19 treesize of output 21 [2018-11-07 04:55:39,654 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 16 treesize of output 15 [2018-11-07 04:55:39,655 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:39,662 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:39,676 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:39,677 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:46, output treesize:42 [2018-11-07 04:55:39,995 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 40 treesize of output 36 [2018-11-07 04:55:39,998 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:55:39,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-07 04:55:39,999 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:40,009 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:55:40,010 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-11-07 04:55:40,010 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:40,014 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:40,024 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:40,024 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:65, output treesize:3 [2018-11-07 04:55:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 04:55:40,102 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:55:40,601 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-11-07 04:55:40,606 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 42 treesize of output 36 [2018-11-07 04:55:40,629 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 21 treesize of output 19 [2018-11-07 04:55:40,630 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:40,633 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 23 treesize of output 20 [2018-11-07 04:55:40,633 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:40,636 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 18 treesize of output 17 [2018-11-07 04:55:40,637 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:40,662 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:55:40,673 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 65 [2018-11-07 04:55:40,846 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2018-11-07 04:55:40,858 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 54 [2018-11-07 04:55:40,860 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-11-07 04:55:40,942 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 33 [2018-11-07 04:55:40,943 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:40,995 INFO L267 ElimStorePlain]: Start of recursive call 6: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:55:40,998 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 51 treesize of output 45 [2018-11-07 04:55:41,035 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 15 treesize of output 15 [2018-11-07 04:55:41,036 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,049 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,059 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2018-11-07 04:55:41,111 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2018-11-07 04:55:41,112 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,115 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 36 treesize of output 35 [2018-11-07 04:55:41,116 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,119 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 38 [2018-11-07 04:55:41,119 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,277 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 36 treesize of output 35 [2018-11-07 04:55:41,278 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 33 treesize of output 32 [2018-11-07 04:55:41,294 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,345 INFO L267 ElimStorePlain]: Start of recursive call 11: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:55:41,488 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 52 treesize of output 46 [2018-11-07 04:55:41,524 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 16 treesize of output 16 [2018-11-07 04:55:41,525 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,538 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,551 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 47 [2018-11-07 04:55:41,615 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 39 [2018-11-07 04:55:41,616 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,619 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2018-11-07 04:55:41,619 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,622 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 38 treesize of output 37 [2018-11-07 04:55:41,622 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,905 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 39 treesize of output 38 [2018-11-07 04:55:41,906 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:41,920 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 35 treesize of output 34 [2018-11-07 04:55:41,920 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:42,080 INFO L267 ElimStorePlain]: Start of recursive call 19: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:55:42,083 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 43 treesize of output 37 [2018-11-07 04:55:42,107 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 24 treesize of output 22 [2018-11-07 04:55:42,108 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:42,109 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 24 treesize of output 21 [2018-11-07 04:55:42,110 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:42,112 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 19 [2018-11-07 04:55:42,113 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:42,142 INFO L267 ElimStorePlain]: Start of recursive call 25: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:55:42,269 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 9 xjuncts. [2018-11-07 04:55:42,269 INFO L202 ElimStorePlain]: Needed 28 recursive calls to eliminate 4 variables, input treesize:112, output treesize:202 [2018-11-07 04:55:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 04:55:43,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 04:55:43,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 21, 19] total 43 [2018-11-07 04:55:43,499 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 04:55:43,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-07 04:55:43,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-07 04:55:43,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1603, Unknown=0, NotChecked=0, Total=1806 [2018-11-07 04:55:43,503 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 27 states. [2018-11-07 04:55:47,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:55:47,137 INFO L93 Difference]: Finished difference Result 114 states and 121 transitions. [2018-11-07 04:55:47,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 04:55:47,139 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 58 [2018-11-07 04:55:47,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:55:47,141 INFO L225 Difference]: With dead ends: 114 [2018-11-07 04:55:47,141 INFO L226 Difference]: Without dead ends: 100 [2018-11-07 04:55:47,143 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=548, Invalid=2992, Unknown=0, NotChecked=0, Total=3540 [2018-11-07 04:55:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-11-07 04:55:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 69. [2018-11-07 04:55:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-07 04:55:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2018-11-07 04:55:47,154 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 58 [2018-11-07 04:55:47,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:55:47,155 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2018-11-07 04:55:47,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-07 04:55:47,155 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2018-11-07 04:55:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-07 04:55:47,156 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:47,156 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 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] [2018-11-07 04:55:47,157 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:47,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:47,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1160508772, now seen corresponding path program 5 times [2018-11-07 04:55:47,157 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:47,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:47,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:55:47,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:47,159 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:47,585 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-11-07 04:55:47,905 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-11-07 04:55:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-07 04:55:48,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:48,090 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:55:48,090 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 04:55:48,090 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 04:55:48,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:48,090 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:55:48,099 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 04:55:48,099 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 04:55:48,138 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-07 04:55:48,139 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 04:55:48,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:55:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-07 04:55:48,207 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:55:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-07 04:55:48,280 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 04:55:48,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2018-11-07 04:55:48,280 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 04:55:48,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 04:55:48,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 04:55:48,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2018-11-07 04:55:48,281 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 10 states. [2018-11-07 04:55:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:55:48,461 INFO L93 Difference]: Finished difference Result 146 states and 153 transitions. [2018-11-07 04:55:48,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 04:55:48,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2018-11-07 04:55:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:55:48,463 INFO L225 Difference]: With dead ends: 146 [2018-11-07 04:55:48,463 INFO L226 Difference]: Without dead ends: 98 [2018-11-07 04:55:48,465 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2018-11-07 04:55:48,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-11-07 04:55:48,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 74. [2018-11-07 04:55:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-11-07 04:55:48,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2018-11-07 04:55:48,477 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 64 [2018-11-07 04:55:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:55:48,478 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2018-11-07 04:55:48,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 04:55:48,478 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2018-11-07 04:55:48,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-07 04:55:48,479 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:48,480 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:55:48,480 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:48,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:48,480 INFO L82 PathProgramCache]: Analyzing trace with hash 430708825, now seen corresponding path program 6 times [2018-11-07 04:55:48,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:48,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:48,481 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 04:55:48,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:48,482 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-07 04:55:48,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:48,765 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:55:48,766 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 04:55:48,766 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 04:55:48,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:48,766 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:55:48,775 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-07 04:55:48,775 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-07 04:55:48,828 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-07 04:55:48,828 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 04:55:48,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:55:48,853 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 6 treesize of output 5 [2018-11-07 04:55:48,853 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:48,861 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:48,861 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-07 04:55:48,874 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:55:48,875 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:55:48,875 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-07 04:55:48,875 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:48,885 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:48,885 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2018-11-07 04:55:49,472 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 19 treesize of output 21 [2018-11-07 04:55:49,476 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 16 treesize of output 15 [2018-11-07 04:55:49,477 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:49,480 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:49,496 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:49,496 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:49, output treesize:45 [2018-11-07 04:55:49,794 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 36 treesize of output 32 [2018-11-07 04:55:49,797 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:55:49,797 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2018-11-07 04:55:49,797 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:49,806 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:55:49,807 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-07 04:55:49,808 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:49,813 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:49,823 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:49,823 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:61, output treesize:3 [2018-11-07 04:55:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-07 04:55:49,909 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:55:50,382 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2018-11-07 04:55:50,437 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 41 treesize of output 33 [2018-11-07 04:55:50,438 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:50,441 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 39 treesize of output 31 [2018-11-07 04:55:50,442 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:50,514 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 28 treesize of output 27 [2018-11-07 04:55:50,515 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:50,576 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 36 treesize of output 35 [2018-11-07 04:55:50,577 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:50,582 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 33 treesize of output 32 [2018-11-07 04:55:50,583 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:50,650 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:55:50,653 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 42 treesize of output 36 [2018-11-07 04:55:50,677 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 13 treesize of output 5 [2018-11-07 04:55:50,678 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:50,691 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 9 treesize of output 9 [2018-11-07 04:55:50,692 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:50,703 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:55:50,707 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 51 treesize of output 45 [2018-11-07 04:55:50,744 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 15 treesize of output 15 [2018-11-07 04:55:50,744 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:50,758 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:50,771 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 65 [2018-11-07 04:55:51,062 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2018-11-07 04:55:51,077 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 54 [2018-11-07 04:55:51,078 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-11-07 04:55:51,127 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 1 case distinctions, treesize of input 49 treesize of output 53 [2018-11-07 04:55:51,128 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-11-07 04:55:51,191 INFO L267 ElimStorePlain]: Start of recursive call 13: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:55:51,331 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 52 treesize of output 46 [2018-11-07 04:55:51,367 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 16 treesize of output 16 [2018-11-07 04:55:51,368 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:51,381 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:51,393 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 47 [2018-11-07 04:55:51,453 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 33 [2018-11-07 04:55:51,454 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:51,458 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 33 [2018-11-07 04:55:51,458 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:51,536 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 28 treesize of output 27 [2018-11-07 04:55:51,536 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:51,595 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 39 treesize of output 38 [2018-11-07 04:55:51,596 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:51,598 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 35 treesize of output 34 [2018-11-07 04:55:51,599 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:51,647 INFO L267 ElimStorePlain]: Start of recursive call 18: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:55:51,655 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 43 treesize of output 37 [2018-11-07 04:55:51,676 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 14 treesize of output 5 [2018-11-07 04:55:51,676 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:51,692 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 9 treesize of output 9 [2018-11-07 04:55:51,692 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:51,703 INFO L267 ElimStorePlain]: Start of recursive call 24: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:55:51,830 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 9 xjuncts. [2018-11-07 04:55:51,830 INFO L202 ElimStorePlain]: Needed 26 recursive calls to eliminate 2 variables, input treesize:112, output treesize:257 [2018-11-07 04:55:52,003 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-11-07 04:55:52,194 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2018-11-07 04:55:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-07 04:55:53,219 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 04:55:53,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 23, 21] total 47 [2018-11-07 04:55:53,219 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 04:55:53,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-07 04:55:53,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-07 04:55:53,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2018-11-07 04:55:53,221 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 29 states. [2018-11-07 04:55:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:55:57,552 INFO L93 Difference]: Finished difference Result 206 states and 220 transitions. [2018-11-07 04:55:57,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 04:55:57,553 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 69 [2018-11-07 04:55:57,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:55:57,554 INFO L225 Difference]: With dead ends: 206 [2018-11-07 04:55:57,554 INFO L226 Difference]: Without dead ends: 158 [2018-11-07 04:55:57,557 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=806, Invalid=4450, Unknown=0, NotChecked=0, Total=5256 [2018-11-07 04:55:57,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-11-07 04:55:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 95. [2018-11-07 04:55:57,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-11-07 04:55:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2018-11-07 04:55:57,575 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 69 [2018-11-07 04:55:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:55:57,576 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2018-11-07 04:55:57,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-07 04:55:57,576 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2018-11-07 04:55:57,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-07 04:55:57,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:57,578 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:55:57,578 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:57,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:57,578 INFO L82 PathProgramCache]: Analyzing trace with hash 236898748, now seen corresponding path program 7 times [2018-11-07 04:55:57,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:57,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:57,579 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 04:55:57,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:57,580 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 26 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-07 04:55:58,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:58,050 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:55:58,050 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 04:55:58,051 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 04:55:58,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:55:58,051 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:55:58,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:55:58,062 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 04:55:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:58,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:55:58,117 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 6 treesize of output 5 [2018-11-07 04:55:58,117 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:58,125 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:58,125 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-07 04:55:58,145 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:55:58,147 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:55:58,147 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-07 04:55:58,148 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:58,153 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:58,154 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2018-11-07 04:55:59,028 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-07 04:55:59,283 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 19 treesize of output 21 [2018-11-07 04:55:59,286 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 16 treesize of output 15 [2018-11-07 04:55:59,286 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:59,290 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:59,303 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:59,304 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:46, output treesize:42 [2018-11-07 04:55:59,647 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 40 treesize of output 36 [2018-11-07 04:55:59,649 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:55:59,649 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2018-11-07 04:55:59,649 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:59,660 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:55:59,661 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-07 04:55:59,661 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-07 04:55:59,665 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:59,677 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:55:59,677 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:65, output treesize:3 [2018-11-07 04:56:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-07 04:56:00,697 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:56:03,557 WARN L179 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 42 [2018-11-07 04:56:03,635 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 42 treesize of output 36 [2018-11-07 04:56:03,657 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 18 treesize of output 17 [2018-11-07 04:56:03,657 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:03,659 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 23 treesize of output 20 [2018-11-07 04:56:03,660 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:03,663 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 21 treesize of output 19 [2018-11-07 04:56:03,663 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:03,691 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:03,694 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 51 treesize of output 45 [2018-11-07 04:56:03,727 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 15 treesize of output 15 [2018-11-07 04:56:03,728 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:03,741 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:03,752 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 65 [2018-11-07 04:56:03,840 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 1 case distinctions, treesize of input 49 treesize of output 53 [2018-11-07 04:56:03,841 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-07 04:56:03,880 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 54 [2018-11-07 04:56:03,881 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-11-07 04:56:03,937 INFO L267 ElimStorePlain]: Start of recursive call 8: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:03,948 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2018-11-07 04:56:03,999 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 38 [2018-11-07 04:56:04,000 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,024 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 36 treesize of output 35 [2018-11-07 04:56:04,025 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,040 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2018-11-07 04:56:04,041 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,202 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 33 treesize of output 32 [2018-11-07 04:56:04,203 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,205 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 36 treesize of output 35 [2018-11-07 04:56:04,206 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,251 INFO L267 ElimStorePlain]: Start of recursive call 11: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:56:04,388 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 52 treesize of output 46 [2018-11-07 04:56:04,424 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 16 treesize of output 16 [2018-11-07 04:56:04,425 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,439 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,471 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 47 [2018-11-07 04:56:04,529 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2018-11-07 04:56:04,530 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,539 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 39 [2018-11-07 04:56:04,539 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,541 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 38 treesize of output 37 [2018-11-07 04:56:04,542 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,665 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 39 treesize of output 38 [2018-11-07 04:56:04,666 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,668 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 35 treesize of output 34 [2018-11-07 04:56:04,669 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,720 INFO L267 ElimStorePlain]: Start of recursive call 19: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:56:04,725 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 43 treesize of output 37 [2018-11-07 04:56:04,746 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 14 treesize of output 5 [2018-11-07 04:56:04,747 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,762 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 9 treesize of output 9 [2018-11-07 04:56:04,762 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:04,776 INFO L267 ElimStorePlain]: Start of recursive call 25: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:04,910 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 8 xjuncts. [2018-11-07 04:56:04,910 INFO L202 ElimStorePlain]: Needed 27 recursive calls to eliminate 4 variables, input treesize:112, output treesize:175 [2018-11-07 04:56:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-07 04:56:06,029 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 04:56:06,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 25, 23] total 53 [2018-11-07 04:56:06,030 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 04:56:06,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-07 04:56:06,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-07 04:56:06,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2474, Unknown=0, NotChecked=0, Total=2756 [2018-11-07 04:56:06,033 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand 33 states. [2018-11-07 04:56:06,815 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 24 [2018-11-07 04:56:07,589 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2018-11-07 04:56:08,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:56:08,825 INFO L93 Difference]: Finished difference Result 134 states and 140 transitions. [2018-11-07 04:56:08,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 04:56:08,826 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 80 [2018-11-07 04:56:08,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:56:08,828 INFO L225 Difference]: With dead ends: 134 [2018-11-07 04:56:08,828 INFO L226 Difference]: Without dead ends: 114 [2018-11-07 04:56:08,830 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=667, Invalid=4163, Unknown=0, NotChecked=0, Total=4830 [2018-11-07 04:56:08,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-11-07 04:56:08,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 88. [2018-11-07 04:56:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-11-07 04:56:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2018-11-07 04:56:08,846 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 80 [2018-11-07 04:56:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:56:08,847 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2018-11-07 04:56:08,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-07 04:56:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2018-11-07 04:56:08,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-07 04:56:08,848 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:56:08,848 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 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] [2018-11-07 04:56:08,849 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:56:08,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:56:08,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1426912843, now seen corresponding path program 1 times [2018-11-07 04:56:08,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:56:08,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:56:08,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:56:08,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:56:08,850 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:56:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:56:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-07 04:56:09,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:56:09,184 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:56:09,184 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 86 with the following transitions: [2018-11-07 04:56:09,185 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [8], [12], [15], [17], [18], [19], [21], [25], [26], [30], [33], [35], [36], [37], [38], [40], [44], [48], [53], [54], [55], [57], [59], [68], [71], [73], [76], [78], [79], [80], [81], [83], [84] [2018-11-07 04:56:09,187 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:56:09,188 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:56:09,205 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:56:10,845 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 04:56:10,845 INFO L272 AbstractInterpreter]: Visited 38 different actions 872 times. Merged at 21 different actions 563 times. Widened at 3 different actions 69 times. Found 44 fixpoints after 5 different actions. Largest state had 26 variables. [2018-11-07 04:56:10,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:56:10,885 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 04:56:10,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:56:10,885 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:56:10,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:56:10,902 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 04:56:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:56:10,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:56:10,956 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 6 treesize of output 5 [2018-11-07 04:56:10,956 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:11,000 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:11,000 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-07 04:56:11,015 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:11,016 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:11,016 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-07 04:56:11,016 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:11,021 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:11,021 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2018-11-07 04:56:11,486 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 49 treesize of output 46 [2018-11-07 04:56:11,489 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 16 treesize of output 15 [2018-11-07 04:56:11,489 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:11,504 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:11,509 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 49 treesize of output 46 [2018-11-07 04:56:11,512 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 16 treesize of output 15 [2018-11-07 04:56:11,513 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:11,528 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:11,572 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:11,572 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:99, output treesize:91 [2018-11-07 04:56:12,081 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 29 [2018-11-07 04:56:12,103 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:12,106 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 25 treesize of output 34 [2018-11-07 04:56:12,107 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:12,113 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:12,131 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:12,132 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:59, output treesize:46 [2018-11-07 04:56:14,438 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_main_~#str2~0.base_BEFORE_CALL_1| Int) (main_~max~0 Int) (|v_main_~#str1~0.base_BEFORE_CALL_1| Int)) (let ((.cse0 (mod (+ main_~max~0 4294967295) 4294967296))) (and (<= .cse0 4) (not (= |v_main_~#str2~0.base_BEFORE_CALL_1| |v_main_~#str1~0.base_BEFORE_CALL_1|)) (<= .cse0 2147483647) (<= 4 .cse0) (= (select (select |c_#memory_int| |v_main_~#str1~0.base_BEFORE_CALL_1|) (+ .cse0 (- 3))) (select (select |c_#memory_int| |v_main_~#str2~0.base_BEFORE_CALL_1|) 3))))) is different from true [2018-11-07 04:56:16,480 WARN L179 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 29 [2018-11-07 04:56:18,526 WARN L179 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 04:56:18,914 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 38 treesize of output 34 [2018-11-07 04:56:18,917 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:18,917 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2018-11-07 04:56:18,918 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:18,928 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:18,929 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-07 04:56:18,929 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:18,933 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:18,944 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:18,944 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:63, output treesize:3 [2018-11-07 04:56:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2018-11-07 04:56:21,074 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:56:24,637 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 99 [2018-11-07 04:56:24,641 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 79 [2018-11-07 04:56:24,764 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-11-07 04:56:24,774 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,775 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,784 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 1 case distinctions, treesize of input 59 treesize of output 72 [2018-11-07 04:56:24,785 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-07 04:56:24,788 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,798 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 62 [2018-11-07 04:56:24,799 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-07 04:56:24,802 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,804 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,812 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 66 [2018-11-07 04:56:24,813 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-11-07 04:56:24,816 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,817 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,820 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,829 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 1 case distinctions, treesize of input 51 treesize of output 73 [2018-11-07 04:56:24,830 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-11-07 04:56:24,833 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,834 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,835 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2018-11-07 04:56:24,835 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:24,847 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 35 [2018-11-07 04:56:24,848 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-07 04:56:24,851 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,853 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,861 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 73 [2018-11-07 04:56:24,862 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-11-07 04:56:24,866 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,867 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:24,874 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 70 [2018-11-07 04:56:24,875 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-11-07 04:56:24,930 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:24,997 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,001 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 0 case distinctions, treesize of input 91 treesize of output 84 [2018-11-07 04:56:25,092 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,095 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2018-11-07 04:56:25,096 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,099 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 0 case distinctions, treesize of input 43 treesize of output 46 [2018-11-07 04:56:25,100 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,103 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,106 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 0 case distinctions, treesize of input 57 treesize of output 55 [2018-11-07 04:56:25,107 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,115 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2018-11-07 04:56:25,116 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,121 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,124 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 0 case distinctions, treesize of input 35 treesize of output 31 [2018-11-07 04:56:25,125 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,156 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,196 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,201 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 54 treesize of output 48 [2018-11-07 04:56:25,204 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 35 [2018-11-07 04:56:25,224 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 23 treesize of output 10 [2018-11-07 04:56:25,225 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,228 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,229 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,230 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 29 treesize of output 27 [2018-11-07 04:56:25,231 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,246 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:25,274 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 20 treesize of output 16 [2018-11-07 04:56:25,274 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,294 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,297 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 72 treesize of output 64 [2018-11-07 04:56:25,302 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 45 [2018-11-07 04:56:25,377 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,378 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,381 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,383 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 0 case distinctions, treesize of input 50 treesize of output 52 [2018-11-07 04:56:25,384 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,387 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,388 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,391 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,393 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 0 case distinctions, treesize of input 41 treesize of output 48 [2018-11-07 04:56:25,394 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,397 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,398 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,409 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 40 treesize of output 59 [2018-11-07 04:56:25,410 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 2 xjuncts. [2018-11-07 04:56:25,413 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,417 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 0 case distinctions, treesize of input 35 treesize of output 31 [2018-11-07 04:56:25,418 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,421 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,422 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,424 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,427 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 0 case distinctions, treesize of input 57 treesize of output 55 [2018-11-07 04:56:25,428 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,431 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,432 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,434 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,437 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 54 [2018-11-07 04:56:25,438 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,477 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:25,503 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:25,602 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 54 treesize of output 48 [2018-11-07 04:56:25,605 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,606 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 32 [2018-11-07 04:56:25,607 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-07 04:56:25,624 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2018-11-07 04:56:25,646 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 19 treesize of output 10 [2018-11-07 04:56:25,646 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,649 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2018-11-07 04:56:25,650 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,665 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:25,691 INFO L267 ElimStorePlain]: Start of recursive call 31: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:25,713 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 72 treesize of output 64 [2018-11-07 04:56:25,717 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 45 [2018-11-07 04:56:25,798 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,802 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 0 case distinctions, treesize of input 35 treesize of output 31 [2018-11-07 04:56:25,803 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,806 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,807 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,808 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,812 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2018-11-07 04:56:25,813 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,817 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,817 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,818 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,822 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 54 [2018-11-07 04:56:25,823 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,826 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,827 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,828 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,832 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2018-11-07 04:56:25,833 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,837 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,837 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,838 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:25,842 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 52 [2018-11-07 04:56:25,842 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:25,845 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,848 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:56:25,858 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 40 treesize of output 59 [2018-11-07 04:56:25,859 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 2 xjuncts. [2018-11-07 04:56:25,896 INFO L267 ElimStorePlain]: Start of recursive call 37: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:25,923 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:26,029 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-11-07 04:56:26,029 INFO L202 ElimStorePlain]: Needed 43 recursive calls to eliminate 4 variables, input treesize:147, output treesize:204 [2018-11-07 04:56:27,023 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-11-07 04:56:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-07 04:56:27,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 04:56:27,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 32, 26] total 62 [2018-11-07 04:56:27,611 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 04:56:27,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-07 04:56:27,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-07 04:56:27,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=3284, Unknown=3, NotChecked=118, Total=3782 [2018-11-07 04:56:27,614 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 39 states. [2018-11-07 04:56:29,209 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-07 04:56:29,875 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2018-11-07 04:56:31,691 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 41 [2018-11-07 04:56:34,948 WARN L179 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 32 [2018-11-07 04:56:35,708 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 50 [2018-11-07 04:56:35,954 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 52 [2018-11-07 04:56:42,042 WARN L179 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2018-11-07 04:56:46,144 WARN L179 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2018-11-07 04:56:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:56:49,750 INFO L93 Difference]: Finished difference Result 179 states and 184 transitions. [2018-11-07 04:56:49,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-07 04:56:49,751 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 85 [2018-11-07 04:56:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:56:49,752 INFO L225 Difference]: With dead ends: 179 [2018-11-07 04:56:49,752 INFO L226 Difference]: Without dead ends: 122 [2018-11-07 04:56:49,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1993 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=1281, Invalid=7461, Unknown=4, NotChecked=184, Total=8930 [2018-11-07 04:56:49,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-11-07 04:56:49,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2018-11-07 04:56:49,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-11-07 04:56:49,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2018-11-07 04:56:49,772 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 85 [2018-11-07 04:56:49,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:56:49,773 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2018-11-07 04:56:49,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-07 04:56:49,773 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2018-11-07 04:56:49,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-07 04:56:49,774 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:56:49,775 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:56:49,775 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:56:49,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:56:49,775 INFO L82 PathProgramCache]: Analyzing trace with hash 868205337, now seen corresponding path program 2 times [2018-11-07 04:56:49,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:56:49,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:56:49,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:56:49,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:56:49,776 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:56:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:56:50,450 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 04:56:50,962 WARN L179 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-11-07 04:56:51,183 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-11-07 04:56:51,803 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-11-07 04:56:52,188 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2018-11-07 04:56:52,346 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2018-11-07 04:56:52,535 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2018-11-07 04:56:52,678 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-11-07 04:56:52,867 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2018-11-07 04:56:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 5 proven. 137 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-07 04:56:53,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:56:53,801 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:56:53,801 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 04:56:53,802 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 04:56:53,802 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:56:53,802 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:56:53,811 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 04:56:53,811 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 04:56:53,966 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-07 04:56:53,966 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 04:56:53,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:56:53,979 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 6 treesize of output 5 [2018-11-07 04:56:53,980 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:53,988 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:53,988 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-07 04:56:54,008 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:54,010 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:54,010 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-07 04:56:54,010 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:54,015 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:54,016 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2018-11-07 04:56:54,461 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 46 treesize of output 43 [2018-11-07 04:56:54,464 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 16 treesize of output 15 [2018-11-07 04:56:54,465 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:54,478 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:54,486 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 46 treesize of output 43 [2018-11-07 04:56:54,489 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 16 treesize of output 15 [2018-11-07 04:56:54,489 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:54,509 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:54,547 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:54,547 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:93, output treesize:85 [2018-11-07 04:56:54,811 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 57 treesize of output 52 [2018-11-07 04:56:54,814 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:54,816 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 26 treesize of output 36 [2018-11-07 04:56:54,816 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:54,835 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:54,885 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 57 treesize of output 52 [2018-11-07 04:56:54,890 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:54,892 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 26 treesize of output 36 [2018-11-07 04:56:54,892 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:54,912 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:54,954 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:56:54,955 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:115, output treesize:89 [2018-11-07 04:56:55,244 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 29 [2018-11-07 04:56:55,247 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:56:55,249 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 25 treesize of output 34 [2018-11-07 04:56:55,249 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:56:55,259 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:55,277 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:56:55,278 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:56, output treesize:43 [2018-11-07 04:56:57,663 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_main_~#str2~0.base_BEFORE_CALL_3| Int) (main_~max~0 Int) (|v_main_~#str2~0.offset_BEFORE_CALL_3| Int) (|v_main_~#str1~0.base_BEFORE_CALL_3| Int)) (let ((.cse0 (mod (+ main_~max~0 4294967295) 4294967296))) (and (<= .cse0 4) (<= .cse0 2147483647) (= (select (select |c_#memory_int| |v_main_~#str2~0.base_BEFORE_CALL_3|) (+ |v_main_~#str2~0.offset_BEFORE_CALL_3| 2)) (select (select |c_#memory_int| |v_main_~#str1~0.base_BEFORE_CALL_3|) (+ .cse0 (- 2)))) (not (= |v_main_~#str2~0.base_BEFORE_CALL_3| |v_main_~#str1~0.base_BEFORE_CALL_3|)) (<= 4 .cse0)))) is different from true [2018-11-07 04:56:59,932 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_main_~#str2~0.base_BEFORE_CALL_4| Int) (|v_main_~#str2~0.offset_BEFORE_CALL_4| Int) (main_~max~0 Int) (|v_main_~#str1~0.base_BEFORE_CALL_4| Int)) (let ((.cse0 (mod (+ main_~max~0 4294967295) 4294967296))) (and (<= .cse0 4) (<= .cse0 2147483647) (= (select (select |c_#memory_int| |v_main_~#str1~0.base_BEFORE_CALL_4|) (+ .cse0 (- 2))) (select (select |c_#memory_int| |v_main_~#str2~0.base_BEFORE_CALL_4|) (+ |v_main_~#str2~0.offset_BEFORE_CALL_4| 2))) (<= 4 .cse0) (not (= |v_main_~#str2~0.base_BEFORE_CALL_4| |v_main_~#str1~0.base_BEFORE_CALL_4|))))) is different from true [2018-11-07 04:57:03,997 WARN L179 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 31 [2018-11-07 04:57:08,131 WARN L179 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 32 [2018-11-07 04:57:08,856 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 41 treesize of output 37 [2018-11-07 04:57:08,858 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:08,858 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2018-11-07 04:57:08,859 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:57:08,876 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:08,876 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-07 04:57:08,877 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-07 04:57:08,880 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:57:08,892 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:57:08,893 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:66, output treesize:3 [2018-11-07 04:57:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 60 trivial. 7 not checked. [2018-11-07 04:57:11,033 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:57:22,923 WARN L179 SmtUtils]: Spent 6.09 s on a formula simplification that was a NOOP. DAG size: 58 [2018-11-07 04:57:22,983 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 84 treesize of output 76 [2018-11-07 04:57:22,989 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 57 [2018-11-07 04:57:22,995 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,010 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 2 case distinctions, treesize of input 53 treesize of output 72 [2018-11-07 04:57:23,190 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-11-07 04:57:23,209 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,211 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,211 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,212 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,237 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 49 treesize of output 93 [2018-11-07 04:57:23,239 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-11-07 04:57:23,271 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,272 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,273 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:23,275 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,296 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 3 case distinctions, treesize of input 50 treesize of output 87 [2018-11-07 04:57:23,298 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:23,304 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,305 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,306 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:23,309 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,330 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 3 case distinctions, treesize of input 52 treesize of output 93 [2018-11-07 04:57:23,332 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:23,337 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,339 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:23,353 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 2 case distinctions, treesize of input 44 treesize of output 52 [2018-11-07 04:57:23,354 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-11-07 04:57:23,385 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,386 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,387 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:23,389 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,412 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 3 case distinctions, treesize of input 59 treesize of output 91 [2018-11-07 04:57:23,413 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:23,421 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,422 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,423 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:23,426 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,447 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 3 case distinctions, treesize of input 66 treesize of output 94 [2018-11-07 04:57:23,448 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:23,615 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,639 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:23,640 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 44 treesize of output 44 [2018-11-07 04:57:23,641 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-07 04:57:23,725 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:57:23,773 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:57:23,836 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:57:23,840 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 60 treesize of output 54 [2018-11-07 04:57:23,843 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 41 [2018-11-07 04:57:23,846 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,848 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 41 treesize of output 52 [2018-11-07 04:57:23,872 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,874 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 19 [2018-11-07 04:57:23,874 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-07 04:57:23,879 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,880 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,883 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:23,889 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 53 [2018-11-07 04:57:23,890 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2018-11-07 04:57:23,922 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:57:23,959 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:57:24,002 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 29 treesize of output 25 [2018-11-07 04:57:24,003 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-07 04:57:24,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 33 treesize of output 29 [2018-11-07 04:57:24,007 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-07 04:57:24,033 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:57:24,046 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 117 [2018-11-07 04:57:24,050 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 97 [2018-11-07 04:57:24,053 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,055 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 81 treesize of output 80 [2018-11-07 04:57:24,162 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-11-07 04:57:24,166 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,186 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 2 case distinctions, treesize of input 44 treesize of output 56 [2018-11-07 04:57:24,187 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 4 xjuncts. [2018-11-07 04:57:24,190 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,192 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,193 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,193 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,203 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,219 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 60 treesize of output 107 [2018-11-07 04:57:24,221 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 4 xjuncts. [2018-11-07 04:57:24,224 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,226 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,226 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,250 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 60 treesize of output 96 [2018-11-07 04:57:24,251 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 4 xjuncts. [2018-11-07 04:57:24,256 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,257 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,265 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,288 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 3 case distinctions, treesize of input 66 treesize of output 105 [2018-11-07 04:57:24,290 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 6 xjuncts. [2018-11-07 04:57:24,325 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,325 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,331 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,353 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 3 case distinctions, treesize of input 75 treesize of output 109 [2018-11-07 04:57:24,356 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 6 xjuncts. [2018-11-07 04:57:24,361 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,362 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,366 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,374 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 71 [2018-11-07 04:57:24,376 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 2 xjuncts. [2018-11-07 04:57:24,380 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,381 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,388 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,410 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 3 case distinctions, treesize of input 82 treesize of output 112 [2018-11-07 04:57:24,413 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 6 xjuncts. [2018-11-07 04:57:24,497 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,500 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,507 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:24,530 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 3 case distinctions, treesize of input 68 treesize of output 111 [2018-11-07 04:57:24,533 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 6 xjuncts. [2018-11-07 04:57:24,720 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2018-11-07 04:57:24,843 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-07 04:57:25,061 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:25,066 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 0 case distinctions, treesize of input 109 treesize of output 102 [2018-11-07 04:57:25,075 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,094 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 90 [2018-11-07 04:57:25,327 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2018-11-07 04:57:25,340 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:25,342 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,366 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 3 case distinctions, treesize of input 89 treesize of output 100 [2018-11-07 04:57:25,368 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:25,371 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,371 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,373 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,385 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 94 [2018-11-07 04:57:25,386 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 2 xjuncts. [2018-11-07 04:57:25,392 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:25,395 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,418 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 3 case distinctions, treesize of input 82 treesize of output 97 [2018-11-07 04:57:25,419 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:25,424 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:25,427 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,451 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 3 case distinctions, treesize of input 73 treesize of output 93 [2018-11-07 04:57:25,452 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:25,457 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,459 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:25,459 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,460 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,462 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,477 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 2 case distinctions, treesize of input 67 treesize of output 95 [2018-11-07 04:57:25,478 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 2 xjuncts. [2018-11-07 04:57:25,485 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:25,487 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,511 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 3 case distinctions, treesize of input 82 treesize of output 97 [2018-11-07 04:57:25,513 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:25,519 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:25,520 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,543 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 3 case distinctions, treesize of input 75 treesize of output 99 [2018-11-07 04:57:25,545 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:25,548 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,549 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,551 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,562 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 65 treesize of output 91 [2018-11-07 04:57:25,563 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 2 xjuncts. [2018-11-07 04:57:25,569 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:25,572 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,596 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 3 case distinctions, treesize of input 75 treesize of output 99 [2018-11-07 04:57:25,597 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:25,604 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:25,606 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,629 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 3 case distinctions, treesize of input 75 treesize of output 94 [2018-11-07 04:57:25,631 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:25,637 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:25,640 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,664 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 3 case distinctions, treesize of input 68 treesize of output 96 [2018-11-07 04:57:25,666 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:25,673 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:25,673 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,674 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,690 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 2 case distinctions, treesize of input 67 treesize of output 95 [2018-11-07 04:57:25,691 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 2 xjuncts. [2018-11-07 04:57:25,696 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:25,697 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:25,712 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 2 case distinctions, treesize of input 51 treesize of output 55 [2018-11-07 04:57:25,713 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 2 xjuncts. [2018-11-07 04:57:25,885 INFO L267 ElimStorePlain]: Start of recursive call 31: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:57:25,935 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:57:26,089 INFO L267 ElimStorePlain]: Start of recursive call 19: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:57:26,268 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 60 treesize of output 54 [2018-11-07 04:57:26,304 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:26,305 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 38 [2018-11-07 04:57:26,306 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-07 04:57:26,323 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2018-11-07 04:57:26,326 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,329 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 33 treesize of output 44 [2018-11-07 04:57:26,352 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,363 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 1 case distinctions, treesize of input 30 treesize of output 42 [2018-11-07 04:57:26,364 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 2 xjuncts. [2018-11-07 04:57:26,367 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,377 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 19 [2018-11-07 04:57:26,377 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2018-11-07 04:57:26,406 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:57:26,441 INFO L267 ElimStorePlain]: Start of recursive call 47: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:57:26,482 INFO L267 ElimStorePlain]: Start of recursive call 45: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:57:26,486 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 84 treesize of output 76 [2018-11-07 04:57:26,491 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 57 [2018-11-07 04:57:26,497 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,512 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 2 case distinctions, treesize of input 53 treesize of output 72 [2018-11-07 04:57:26,678 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2018-11-07 04:57:26,683 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,683 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,684 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,684 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,710 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 49 treesize of output 93 [2018-11-07 04:57:26,711 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 4 xjuncts. [2018-11-07 04:57:26,735 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:26,736 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,741 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,760 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 93 [2018-11-07 04:57:26,761 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:26,769 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:26,769 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,783 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 2 case distinctions, treesize of input 44 treesize of output 52 [2018-11-07 04:57:26,784 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 2 xjuncts. [2018-11-07 04:57:26,790 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:26,791 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,796 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,817 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 3 case distinctions, treesize of input 62 treesize of output 90 [2018-11-07 04:57:26,819 INFO L267 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:26,824 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:26,825 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,830 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,851 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 3 case distinctions, treesize of input 59 treesize of output 91 [2018-11-07 04:57:26,852 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:26,858 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:26,859 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,865 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:57:26,886 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 3 case distinctions, treesize of input 50 treesize of output 87 [2018-11-07 04:57:26,887 INFO L267 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 3 xjuncts. [2018-11-07 04:57:27,049 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:57:27,050 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 0 case distinctions, treesize of input 44 treesize of output 44 [2018-11-07 04:57:27,050 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2018-11-07 04:57:27,106 INFO L267 ElimStorePlain]: Start of recursive call 53: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:57:27,151 INFO L267 ElimStorePlain]: Start of recursive call 52: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:57:27,207 INFO L267 ElimStorePlain]: Start of recursive call 51: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:57:27,438 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 6 dim-0 vars, and 9 xjuncts. [2018-11-07 04:57:27,439 INFO L202 ElimStorePlain]: Needed 60 recursive calls to eliminate 8 variables, input treesize:171, output treesize:346 [2018-11-07 04:57:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 4 proven. 87 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-11-07 04:57:30,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 04:57:30,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32, 30] total 84 [2018-11-07 04:57:30,575 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 04:57:30,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-11-07 04:57:30,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-11-07 04:57:30,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=558, Invalid=6084, Unknown=8, NotChecked=322, Total=6972 [2018-11-07 04:57:30,579 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand 59 states. [2018-11-07 04:57:32,411 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-11-07 04:57:32,748 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2018-11-07 04:57:33,023 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-11-07 04:57:33,601 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 51 [2018-11-07 04:57:33,943 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2018-11-07 04:57:34,330 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2018-11-07 04:57:34,690 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63 [2018-11-07 04:57:34,988 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2018-11-07 04:57:35,332 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 52 [2018-11-07 04:57:35,663 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 59 [2018-11-07 04:57:36,050 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 63 [2018-11-07 04:57:36,395 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 60 [2018-11-07 04:57:36,714 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 59 [2018-11-07 04:57:37,012 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 53 [2018-11-07 04:57:37,342 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 63 [2018-11-07 04:57:37,718 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 67 [2018-11-07 04:57:38,062 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 61 [2018-11-07 04:57:38,386 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 60 [2018-11-07 04:57:38,702 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 52 [2018-11-07 04:57:38,993 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 63 [2018-11-07 04:57:39,312 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 67 [2018-11-07 04:57:39,624 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 63 [2018-11-07 04:57:39,931 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 63 [2018-11-07 04:57:40,345 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 52 [2018-11-07 04:57:40,705 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 42 [2018-11-07 04:57:46,984 WARN L179 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2018-11-07 04:57:47,306 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 45 [2018-11-07 04:57:47,923 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 43 [2018-11-07 04:57:48,338 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 46 [2018-11-07 04:57:48,851 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 43 [2018-11-07 04:57:49,685 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 57 [2018-11-07 04:57:50,171 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 59 [2018-11-07 04:57:56,458 WARN L179 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2018-11-07 04:58:00,542 WARN L179 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2018-11-07 04:58:01,236 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2018-11-07 04:58:21,715 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 53 [2018-11-07 04:58:21,966 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 43 [2018-11-07 04:58:21,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:58:21,974 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2018-11-07 04:58:21,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-11-07 04:58:21,974 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 101 [2018-11-07 04:58:21,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:58:21,976 INFO L225 Difference]: With dead ends: 119 [2018-11-07 04:58:21,977 INFO L226 Difference]: Without dead ends: 117 [2018-11-07 04:58:21,982 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 148 SyntacticMatches, 9 SemanticMatches, 132 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 4908 ImplicationChecksByTransitivity, 69.2s TimeCoverageRelationStatistics Valid=2029, Invalid=15259, Unknown=12, NotChecked=522, Total=17822 [2018-11-07 04:58:21,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-11-07 04:58:21,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2018-11-07 04:58:21,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-11-07 04:58:21,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-11-07 04:58:21,999 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 101 [2018-11-07 04:58:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:58:21,999 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-11-07 04:58:21,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-11-07 04:58:22,000 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-11-07 04:58:22,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 04:58:22,001 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:58:22,001 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:58:22,002 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:58:22,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:58:22,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1738111638, now seen corresponding path program 3 times [2018-11-07 04:58:22,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:58:22,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:58:22,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 04:58:22,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:58:22,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:58:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:58:23,220 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2018-11-07 04:58:23,356 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2018-11-07 04:58:23,485 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2018-11-07 04:58:23,655 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2018-11-07 04:58:23,794 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-11-07 04:58:24,003 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-11-07 04:58:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 5 proven. 171 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-07 04:58:25,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:58:25,478 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:58:25,478 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 04:58:25,478 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 04:58:25,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:58:25,478 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:58:25,487 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-07 04:58:25,488 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-07 04:58:25,554 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-07 04:58:25,554 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 04:58:25,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:58:25,561 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 6 treesize of output 5 [2018-11-07 04:58:25,561 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:25,567 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:25,567 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-07 04:58:25,636 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:25,637 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:25,637 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-07 04:58:25,638 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:25,644 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:25,644 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2018-11-07 04:58:26,307 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 49 treesize of output 46 [2018-11-07 04:58:26,310 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 16 treesize of output 15 [2018-11-07 04:58:26,310 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:26,327 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:26,340 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 49 treesize of output 46 [2018-11-07 04:58:26,342 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 16 treesize of output 15 [2018-11-07 04:58:26,342 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:26,363 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:26,413 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:58:26,413 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:99, output treesize:91 [2018-11-07 04:58:26,859 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 60 treesize of output 55 [2018-11-07 04:58:26,890 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:26,891 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 26 treesize of output 36 [2018-11-07 04:58:26,891 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:26,912 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:26,992 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 60 treesize of output 55 [2018-11-07 04:58:26,996 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:26,997 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 26 treesize of output 36 [2018-11-07 04:58:26,998 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:27,021 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:27,069 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:58:27,069 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:121, output treesize:95 [2018-11-07 04:58:27,339 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 60 treesize of output 55 [2018-11-07 04:58:27,343 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:27,345 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 26 treesize of output 36 [2018-11-07 04:58:27,346 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:27,366 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:27,423 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 60 treesize of output 55 [2018-11-07 04:58:27,427 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:27,429 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 26 treesize of output 36 [2018-11-07 04:58:27,429 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:27,451 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:27,500 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:58:27,501 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:121, output treesize:95 [2018-11-07 04:58:27,909 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 29 [2018-11-07 04:58:27,913 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:27,915 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 25 treesize of output 34 [2018-11-07 04:58:27,916 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:27,925 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:27,945 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:27,945 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:59, output treesize:46 [2018-11-07 04:58:30,422 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_main_~#str1~0.base_BEFORE_CALL_7| Int) (main_~max~0 Int) (|v_main_~#str2~0.base_BEFORE_CALL_7| Int)) (let ((.cse0 (mod (+ main_~max~0 4294967295) 4294967296))) (and (not (= |v_main_~#str2~0.base_BEFORE_CALL_7| |v_main_~#str1~0.base_BEFORE_CALL_7|)) (= (select (select |c_#memory_int| |v_main_~#str2~0.base_BEFORE_CALL_7|) 1) (select (select |c_#memory_int| |v_main_~#str1~0.base_BEFORE_CALL_7|) (+ .cse0 (- 1)))) (<= .cse0 2147483647) (< .cse0 5) (<= 4 .cse0)))) is different from true [2018-11-07 04:58:32,786 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_main_~#str1~0.base_BEFORE_CALL_8| Int) (main_~max~0 Int) (|v_main_~#str2~0.base_BEFORE_CALL_8| Int)) (let ((.cse0 (mod (+ main_~max~0 4294967295) 4294967296))) (and (= (select (select |c_#memory_int| |v_main_~#str2~0.base_BEFORE_CALL_8|) 1) (select (select |c_#memory_int| |v_main_~#str1~0.base_BEFORE_CALL_8|) (+ .cse0 (- 1)))) (<= .cse0 2147483647) (< .cse0 5) (not (= |v_main_~#str2~0.base_BEFORE_CALL_8| |v_main_~#str1~0.base_BEFORE_CALL_8|)) (<= 4 .cse0)))) is different from true [2018-11-07 04:58:35,150 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_main_~#str1~0.base_BEFORE_CALL_9| Int) (main_~max~0 Int) (|v_main_~#str2~0.base_BEFORE_CALL_9| Int)) (let ((.cse0 (mod (+ main_~max~0 4294967295) 4294967296))) (and (= (select (select |c_#memory_int| |v_main_~#str2~0.base_BEFORE_CALL_9|) 1) (select (select |c_#memory_int| |v_main_~#str1~0.base_BEFORE_CALL_9|) (+ .cse0 (- 1)))) (<= .cse0 2147483647) (< .cse0 5) (not (= |v_main_~#str2~0.base_BEFORE_CALL_9| |v_main_~#str1~0.base_BEFORE_CALL_9|)) (<= 4 .cse0)))) is different from true [2018-11-07 04:58:35,643 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 38 treesize of output 34 [2018-11-07 04:58:35,646 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:35,647 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2018-11-07 04:58:35,647 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:35,658 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:35,659 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-07 04:58:35,659 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:35,663 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:35,674 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:35,674 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:63, output treesize:3 [2018-11-07 04:58:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 2 trivial. 18 not checked. [2018-11-07 04:58:35,905 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:58:39,458 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 135 [2018-11-07 04:58:39,462 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 115 [2018-11-07 04:58:39,466 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,467 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 99 treesize of output 98 [2018-11-07 04:58:39,471 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,472 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,472 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,476 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 90 treesize of output 106 [2018-11-07 04:58:39,585 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-11-07 04:58:39,594 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,594 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,595 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,596 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,600 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,619 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 106 [2018-11-07 04:58:39,620 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2018-11-07 04:58:39,627 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,628 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,630 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,632 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,638 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,679 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 5 case distinctions, treesize of input 87 treesize of output 156 [2018-11-07 04:58:39,686 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 18 xjuncts. [2018-11-07 04:58:39,691 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,692 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,694 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,696 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,702 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,741 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 2 new quantified variables, introduced 5 case distinctions, treesize of input 77 treesize of output 159 [2018-11-07 04:58:39,748 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 19 xjuncts. [2018-11-07 04:58:39,754 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,755 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,757 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,759 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,765 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,808 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 5 case distinctions, treesize of input 84 treesize of output 157 [2018-11-07 04:58:39,816 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 19 xjuncts. [2018-11-07 04:58:39,827 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,828 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,830 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,833 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,838 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,879 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 5 case distinctions, treesize of input 75 treesize of output 153 [2018-11-07 04:58:39,887 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 19 xjuncts. [2018-11-07 04:58:39,911 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,913 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,918 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:39,946 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 3 case distinctions, treesize of input 53 treesize of output 86 [2018-11-07 04:58:39,948 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 8 xjuncts. [2018-11-07 04:58:40,665 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 22 xjuncts. [2018-11-07 04:58:40,953 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 10 xjuncts. [2018-11-07 04:58:41,194 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 10 xjuncts. [2018-11-07 04:58:41,579 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:41,583 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 0 case distinctions, treesize of input 127 treesize of output 120 [2018-11-07 04:58:41,588 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:41,604 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 108 [2018-11-07 04:58:41,614 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:41,615 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:41,616 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:41,638 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 120 [2018-11-07 04:58:41,934 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-11-07 04:58:41,943 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:41,946 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:41,946 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:41,949 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:41,949 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:41,951 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:41,980 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 2 case distinctions, treesize of input 74 treesize of output 134 [2018-11-07 04:58:41,982 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 4 xjuncts. [2018-11-07 04:58:42,000 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:42,000 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,002 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,004 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,052 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 142 [2018-11-07 04:58:42,055 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 9 xjuncts. [2018-11-07 04:58:42,065 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:42,065 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,066 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,068 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,112 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 3 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 144 [2018-11-07 04:58:42,115 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 9 xjuncts. [2018-11-07 04:58:42,123 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:42,123 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,124 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,126 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,154 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 2 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 85 [2018-11-07 04:58:42,155 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 4 xjuncts. [2018-11-07 04:58:42,164 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:42,165 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,166 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,168 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,210 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 141 [2018-11-07 04:58:42,215 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 9 xjuncts. [2018-11-07 04:58:42,259 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:42,260 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,260 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,263 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:42,305 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 144 [2018-11-07 04:58:42,311 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 9 xjuncts. [2018-11-07 04:58:42,855 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-11-07 04:58:43,075 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-11-07 04:58:43,199 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-11-07 04:58:43,585 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-11-07 04:58:43,590 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 66 treesize of output 60 [2018-11-07 04:58:43,593 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:43,594 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2018-11-07 04:58:43,594 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-07 04:58:43,611 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 39 [2018-11-07 04:58:43,615 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:43,616 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 39 treesize of output 50 [2018-11-07 04:58:43,620 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:43,620 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:43,621 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:43,626 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 42 treesize of output 70 [2018-11-07 04:58:43,663 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:43,664 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:43,664 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:43,685 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 77 [2018-11-07 04:58:43,686 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 4 xjuncts. [2018-11-07 04:58:43,690 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:43,690 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:43,691 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:43,695 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2018-11-07 04:58:43,696 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:43,759 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-07 04:58:43,819 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:58:43,867 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:58:43,927 INFO L267 ElimStorePlain]: Start of recursive call 21: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:58:43,930 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 96 treesize of output 88 [2018-11-07 04:58:43,934 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 69 [2018-11-07 04:58:43,940 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:43,956 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 2 case distinctions, treesize of input 65 treesize of output 84 [2018-11-07 04:58:43,961 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:43,962 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 73 [2018-11-07 04:58:44,047 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,049 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,050 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:44,061 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 1 case distinctions, treesize of input 47 treesize of output 61 [2018-11-07 04:58:44,063 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:44,065 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-07 04:58:44,065 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:44,068 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,068 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:44,072 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2018-11-07 04:58:44,072 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:44,075 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,077 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,079 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:44,090 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 67 [2018-11-07 04:58:44,091 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:44,115 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,158 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,181 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:44,243 INFO L303 Elim1Store]: Index analysis took 151 ms [2018-11-07 04:58:44,249 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 1 case distinctions, treesize of input 56 treesize of output 65 [2018-11-07 04:58:44,250 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:44,253 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,255 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,256 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:44,267 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 64 [2018-11-07 04:58:44,268 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:44,334 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:58:44,391 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,391 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,392 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,417 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 98 [2018-11-07 04:58:44,593 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-11-07 04:58:44,597 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,598 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,599 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:44,602 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 54 [2018-11-07 04:58:44,603 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:44,607 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,608 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,609 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,611 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:44,623 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 1 case distinctions, treesize of input 65 treesize of output 82 [2018-11-07 04:58:44,624 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:44,626 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-07 04:58:44,627 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:44,632 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,633 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,634 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,636 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:44,648 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 1 case distinctions, treesize of input 56 treesize of output 78 [2018-11-07 04:58:44,649 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:44,653 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,654 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,655 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,657 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:44,669 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 1 case distinctions, treesize of input 58 treesize of output 84 [2018-11-07 04:58:44,670 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:44,674 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,675 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,676 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,678 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:44,690 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 85 [2018-11-07 04:58:44,691 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:44,858 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:44,859 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,860 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,862 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,889 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 2 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 82 [2018-11-07 04:58:44,891 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 4 xjuncts. [2018-11-07 04:58:44,895 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,900 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,906 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:44,907 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,908 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,910 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,951 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 141 [2018-11-07 04:58:44,955 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 9 xjuncts. [2018-11-07 04:58:44,957 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,963 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,964 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,964 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,965 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,966 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:44,966 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:45,001 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 3 case distinctions, treesize of input 58 treesize of output 136 [2018-11-07 04:58:45,003 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 8 xjuncts. [2018-11-07 04:58:45,286 INFO L267 ElimStorePlain]: Start of recursive call 38: 2 dim-1 vars, End of recursive call: and 10 xjuncts. [2018-11-07 04:58:45,431 INFO L267 ElimStorePlain]: Start of recursive call 30: 2 dim-1 vars, End of recursive call: and 9 xjuncts. [2018-11-07 04:58:45,559 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2018-11-07 04:58:45,700 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2018-11-07 04:58:46,072 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 96 treesize of output 88 [2018-11-07 04:58:46,082 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 69 [2018-11-07 04:58:46,088 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,104 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 2 case distinctions, treesize of input 65 treesize of output 84 [2018-11-07 04:58:46,110 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,111 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,111 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,135 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 98 [2018-11-07 04:58:46,308 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2018-11-07 04:58:46,313 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,317 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,322 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:46,325 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,328 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,330 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,371 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 139 [2018-11-07 04:58:46,374 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 9 xjuncts. [2018-11-07 04:58:46,380 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:46,383 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,385 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,387 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,413 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 2 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 82 [2018-11-07 04:58:46,415 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 4 xjuncts. [2018-11-07 04:58:46,418 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,423 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,429 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:46,432 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,434 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,436 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,475 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 141 [2018-11-07 04:58:46,480 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 9 xjuncts. [2018-11-07 04:58:46,518 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,540 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,544 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:46,547 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,549 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,551 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,590 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 3 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 142 [2018-11-07 04:58:46,594 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 9 xjuncts. [2018-11-07 04:58:46,600 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,604 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,605 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,606 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,606 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,607 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,607 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,643 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 3 case distinctions, treesize of input 58 treesize of output 136 [2018-11-07 04:58:46,646 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 8 xjuncts. [2018-11-07 04:58:46,649 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,654 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,659 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:46,662 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,664 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,666 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:46,707 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 135 [2018-11-07 04:58:46,710 INFO L267 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 9 xjuncts. [2018-11-07 04:58:47,205 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,206 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,206 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,208 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:47,221 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 1 case distinctions, treesize of input 53 treesize of output 79 [2018-11-07 04:58:47,222 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:47,384 INFO L267 ElimStorePlain]: Start of recursive call 51: 2 dim-1 vars, End of recursive call: and 9 xjuncts. [2018-11-07 04:58:47,554 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,557 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 59 treesize of output 65 [2018-11-07 04:58:47,649 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,652 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,654 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:47,666 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 68 [2018-11-07 04:58:47,667 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:47,670 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,672 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,673 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:47,684 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 1 case distinctions, treesize of input 47 treesize of output 61 [2018-11-07 04:58:47,685 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:47,688 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-07 04:58:47,688 INFO L267 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:47,692 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,693 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:47,695 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2018-11-07 04:58:47,695 INFO L267 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:47,699 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,700 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,701 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:47,713 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 1 case distinctions, treesize of input 56 treesize of output 65 [2018-11-07 04:58:47,714 INFO L267 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:47,717 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,719 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:47,720 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:58:47,733 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 1 case distinctions, treesize of input 49 treesize of output 67 [2018-11-07 04:58:47,734 INFO L267 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 2 xjuncts. [2018-11-07 04:58:47,803 INFO L267 ElimStorePlain]: Start of recursive call 59: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-07 04:58:47,935 INFO L267 ElimStorePlain]: Start of recursive call 50: 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-11-07 04:58:48,053 INFO L267 ElimStorePlain]: Start of recursive call 49: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-11-07 04:58:48,183 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-11-07 04:58:48,188 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 66 treesize of output 60 [2018-11-07 04:58:48,191 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 47 [2018-11-07 04:58:48,193 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:48,196 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 47 treesize of output 58 [2018-11-07 04:58:48,200 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:48,200 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:48,201 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:48,206 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 50 treesize of output 78 [2018-11-07 04:58:48,236 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:48,237 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:48,237 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:48,238 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:48,242 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:48,261 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 2 case distinctions, treesize of input 47 treesize of output 88 [2018-11-07 04:58:48,262 INFO L267 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 4 xjuncts. [2018-11-07 04:58:48,266 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:48,266 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:48,267 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 04:58:48,270 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 36 [2018-11-07 04:58:48,270 INFO L267 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:48,344 INFO L267 ElimStorePlain]: Start of recursive call 69: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-07 04:58:48,411 INFO L267 ElimStorePlain]: Start of recursive call 68: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:58:48,464 INFO L267 ElimStorePlain]: Start of recursive call 67: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-07 04:58:48,529 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 46 treesize of output 42 [2018-11-07 04:58:48,530 INFO L267 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:48,532 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 38 [2018-11-07 04:58:48,532 INFO L267 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:48,534 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 38 [2018-11-07 04:58:48,535 INFO L267 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2018-11-07 04:58:48,567 INFO L267 ElimStorePlain]: Start of recursive call 66: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:58:49,086 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: and 19 xjuncts. [2018-11-07 04:58:49,087 INFO L202 ElimStorePlain]: Needed 74 recursive calls to eliminate 8 variables, input treesize:195, output treesize:980 [2018-11-07 04:58:49,723 WARN L179 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-11-07 04:58:50,059 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-11-07 04:58:50,395 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-11-07 04:58:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 04:58:51,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 04:58:51,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37, 32] total 97 [2018-11-07 04:58:51,055 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 04:58:51,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-11-07 04:58:51,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-11-07 04:58:51,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=698, Invalid=8053, Unknown=3, NotChecked=558, Total=9312 [2018-11-07 04:58:51,057 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 70 states. [2018-11-07 04:58:59,591 WARN L179 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 04:59:03,712 WARN L179 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-11-07 04:59:19,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:59:19,425 INFO L93 Difference]: Finished difference Result 136 states and 138 transitions. [2018-11-07 04:59:19,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-07 04:59:19,425 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 112 [2018-11-07 04:59:19,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:59:19,427 INFO L225 Difference]: With dead ends: 136 [2018-11-07 04:59:19,427 INFO L226 Difference]: Without dead ends: 134 [2018-11-07 04:59:19,429 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 162 SyntacticMatches, 10 SemanticMatches, 136 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5129 ImplicationChecksByTransitivity, 42.9s TimeCoverageRelationStatistics Valid=1721, Invalid=16373, Unknown=8, NotChecked=804, Total=18906 [2018-11-07 04:59:19,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-11-07 04:59:19,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 126. [2018-11-07 04:59:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-11-07 04:59:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2018-11-07 04:59:19,451 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 112 [2018-11-07 04:59:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:59:19,452 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2018-11-07 04:59:19,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-11-07 04:59:19,452 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2018-11-07 04:59:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-07 04:59:19,454 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:59:19,457 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:59:19,457 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:59:19,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:59:19,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1091904249, now seen corresponding path program 4 times [2018-11-07 04:59:19,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:59:19,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:59:19,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 04:59:19,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:59:19,459 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:59:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:59:21,074 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2018-11-07 04:59:21,946 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 32 [2018-11-07 04:59:23,015 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2018-11-07 04:59:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 7 proven. 202 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-07 04:59:23,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:59:23,520 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:59:23,521 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 04:59:23,521 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 04:59:23,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:59:23,521 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:59:23,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:59:23,530 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 04:59:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:59:23,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:59:23,577 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 6 treesize of output 5 [2018-11-07 04:59:23,577 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:59:23,587 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:59:23,587 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-07 04:59:23,663 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:59:23,663 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:59:23,664 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-07 04:59:23,664 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-07 04:59:23,668 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:59:23,669 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2018-11-07 04:59:24,065 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 49 treesize of output 46 [2018-11-07 04:59:24,069 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 16 treesize of output 15 [2018-11-07 04:59:24,070 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:59:24,100 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:59:24,105 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 47 treesize of output 44 [2018-11-07 04:59:24,109 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 16 treesize of output 15 [2018-11-07 04:59:24,110 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:59:24,125 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:59:24,167 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:59:24,167 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:97, output treesize:89 [2018-11-07 04:59:24,526 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 60 treesize of output 55 [2018-11-07 04:59:24,530 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:59:24,533 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 26 treesize of output 36 [2018-11-07 04:59:24,533 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:59:24,556 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:59:24,612 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 60 treesize of output 55 [2018-11-07 04:59:24,616 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:59:24,617 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 26 treesize of output 36 [2018-11-07 04:59:24,618 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:59:24,640 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:59:24,689 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:59:24,690 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:121, output treesize:95 [2018-11-07 04:59:24,931 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 60 treesize of output 55 [2018-11-07 04:59:24,935 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:59:24,937 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 26 treesize of output 36 [2018-11-07 04:59:24,937 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:59:24,958 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:59:25,016 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 60 treesize of output 55 [2018-11-07 04:59:25,020 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:59:25,022 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 26 treesize of output 36 [2018-11-07 04:59:25,022 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:59:25,043 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:59:25,092 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:59:25,093 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:121, output treesize:95 [2018-11-07 04:59:25,342 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 60 treesize of output 55 [2018-11-07 04:59:25,345 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:59:25,347 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 26 treesize of output 36 [2018-11-07 04:59:25,347 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:59:25,369 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:59:25,427 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 60 treesize of output 55 [2018-11-07 04:59:25,431 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:59:25,433 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 26 treesize of output 36 [2018-11-07 04:59:25,434 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-07 04:59:25,455 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:59:25,502 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-07 04:59:25,503 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:121, output treesize:95 [2018-11-07 04:59:25,914 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 28 treesize of output 27 [2018-11-07 04:59:25,917 INFO L700 Elim1Store]: detected not equals via solver [2018-11-07 04:59:25,919 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 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 30 [2018-11-07 04:59:25,919 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 04:59:25,928 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:59:25,948 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 04:59:25,948 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:57, output treesize:44 [2018-11-07 04:59:28,740 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_main_~#str1~0.base_BEFORE_CALL_13| Int) (main_~max~0 Int) (|v_main_~#str2~0.base_BEFORE_CALL_13| Int)) (let ((.cse0 (mod (+ main_~max~0 4294967295) 4294967296))) (and (<= .cse0 4) (<= .cse0 2147483647) (= (select (select |c_#memory_int| |v_main_~#str2~0.base_BEFORE_CALL_13|) 0) (select (select |c_#memory_int| |v_main_~#str1~0.base_BEFORE_CALL_13|) .cse0)) (not (= |v_main_~#str1~0.base_BEFORE_CALL_13| |v_main_~#str2~0.base_BEFORE_CALL_13|)) (<= 4 .cse0)))) is different from true [2018-11-07 04:59:32,826 WARN L179 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 27 Received shutdown request... [2018-11-07 04:59:36,940 WARN L179 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 27 [2018-11-07 04:59:36,942 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 04:59:37,142 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 04:59:37,143 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 04:59:37,149 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 04:59:37,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:59:37 BoogieIcfgContainer [2018-11-07 04:59:37,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 04:59:37,150 INFO L168 Benchmark]: Toolchain (without parser) took 261713.08 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -711.9 MB). Peak memory consumption was 344.0 MB. Max. memory is 7.1 GB. [2018-11-07 04:59:37,151 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-07 04:59:37,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.89 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. [2018-11-07 04:59:37,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.91 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. [2018-11-07 04:59:37,152 INFO L168 Benchmark]: Boogie Preprocessor took 58.33 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. [2018-11-07 04:59:37,152 INFO L168 Benchmark]: RCFGBuilder took 728.89 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -766.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2018-11-07 04:59:37,152 INFO L168 Benchmark]: TraceAbstraction took 260545.76 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 334.5 MB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 44.0 MB). Peak memory consumption was 378.5 MB. Max. memory is 7.1 GB. [2018-11-07 04:59:37,154 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.89 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 32.91 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 58.33 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 728.89 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -766.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 260545.76 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 334.5 MB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 44.0 MB). Peak memory consumption was 378.5 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 124 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 3 quantified variables from 5 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 44 locations, 1 error locations. TIMEOUT Result, 260.4s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 117.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 461 SDtfs, 2393 SDslu, 4938 SDs, 0 SdLazy, 11796 SolverSat, 1160 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 32.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1785 GetRequests, 1073 SyntacticMatches, 36 SemanticMatches, 676 ConstructedPredicates, 6 IntricatePredicates, 1 DeprecatedPredicates, 15630 ImplicationChecksByTransitivity, 173.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.2s AbstIntTime, 3 AbstIntIterations, 1 AbstIntStrong, 0.9821316614420064 AbsIntWeakeningRatio, 0.7241379310344828 AbsIntAvgWeakeningVarsNumRemoved, 16.17241379310345 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 256 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 119.3s InterpolantComputationTime, 1470 NumberOfCodeBlocks, 1446 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2134 ConstructedInterpolants, 172 QuantifiedInterpolants, 5068797 SizeOfPredicates, 156 NumberOfNonLiveVariables, 1409 ConjunctsInSsa, 425 ConjunctsInUnsatCore, 33 InterpolantComputations, 2 PerfectInterpolantSequences, 945/2600 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown