java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/vogal_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:40:21,939 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:40:21,941 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:40:21,953 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:40:21,953 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:40:21,954 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:40:21,955 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:40:21,957 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:40:21,959 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:40:21,959 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:40:21,960 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:40:21,960 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:40:21,961 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:40:21,964 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:40:21,966 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:40:21,966 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:40:21,967 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:40:21,969 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:40:21,971 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:40:21,973 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:40:21,974 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:40:21,975 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:40:21,977 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:40:21,986 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-22 15:40:22,001 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:40:22,001 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:40:22,002 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:40:22,002 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:40:22,003 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:40:22,003 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:40:22,003 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:40:22,003 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:40:22,004 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:40:22,004 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:40:22,004 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:40:22,004 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:40:22,004 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:40:22,004 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:40:22,005 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:40:22,005 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:40:22,005 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:40:22,005 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:40:22,005 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:40:22,006 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:40:22,006 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:40:22,006 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:40:22,006 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:40:22,006 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:40:22,007 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:40:22,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:40:22,007 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:40:22,007 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:40:22,065 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:40:22,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:40:22,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:40:22,086 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:40:22,086 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:40:22,088 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/vogal_true-unreach-call.i [2018-10-22 15:40:22,154 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a3efe646f/e0c5c7d0cba440f980b9ea5173484e9b/FLAG6b4188f74 [2018-10-22 15:40:22,681 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:40:22,682 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal_true-unreach-call.i [2018-10-22 15:40:22,687 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a3efe646f/e0c5c7d0cba440f980b9ea5173484e9b/FLAG6b4188f74 [2018-10-22 15:40:22,702 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a3efe646f/e0c5c7d0cba440f980b9ea5173484e9b [2018-10-22 15:40:22,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:40:22,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:40:22,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:40:22,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:40:22,723 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:40:22,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:40:22" (1/1) ... [2018-10-22 15:40:22,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5392a41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:22, skipping insertion in model container [2018-10-22 15:40:22,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:40:22" (1/1) ... [2018-10-22 15:40:22,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:40:22,757 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:40:22,960 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:40:22,964 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:40:23,005 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:40:23,026 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:40:23,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:23 WrapperNode [2018-10-22 15:40:23,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:40:23,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:40:23,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:40:23,028 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:40:23,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:23" (1/1) ... [2018-10-22 15:40:23,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:23" (1/1) ... [2018-10-22 15:40:23,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:40:23,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:40:23,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:40:23,083 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:40:23,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:23" (1/1) ... [2018-10-22 15:40:23,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:23" (1/1) ... [2018-10-22 15:40:23,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:23" (1/1) ... [2018-10-22 15:40:23,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:23" (1/1) ... [2018-10-22 15:40:23,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:23" (1/1) ... [2018-10-22 15:40:23,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:23" (1/1) ... [2018-10-22 15:40:23,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:23" (1/1) ... [2018-10-22 15:40:23,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:40:23,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:40:23,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:40:23,121 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:40:23,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:40:23,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-22 15:40:23,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:40:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:40:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-22 15:40:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-22 15:40:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-22 15:40:23,797 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:40:23,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:40:23 BoogieIcfgContainer [2018-10-22 15:40:23,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:40:23,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:40:23,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:40:23,801 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:40:23,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:40:22" (1/3) ... [2018-10-22 15:40:23,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d40a5eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:40:23, skipping insertion in model container [2018-10-22 15:40:23,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:40:23" (2/3) ... [2018-10-22 15:40:23,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d40a5eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:40:23, skipping insertion in model container [2018-10-22 15:40:23,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:40:23" (3/3) ... [2018-10-22 15:40:23,805 INFO L112 eAbstractionObserver]: Analyzing ICFG vogal_true-unreach-call.i [2018-10-22 15:40:23,815 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:40:23,824 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:40:23,842 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:40:23,876 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:40:23,877 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:40:23,877 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:40:23,878 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:40:23,878 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:40:23,878 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:40:23,878 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:40:23,878 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:40:23,878 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:40:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-10-22 15:40:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-22 15:40:23,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:23,905 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, 1, 1, 1] [2018-10-22 15:40:23,908 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:23,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:23,914 INFO L82 PathProgramCache]: Analyzing trace with hash 171948516, now seen corresponding path program 1 times [2018-10-22 15:40:23,917 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:23,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:23,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:23,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:23,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:40:24,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:40:24,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:40:24,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:40:24,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:40:24,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:40:24,106 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2018-10-22 15:40:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:24,134 INFO L93 Difference]: Finished difference Result 103 states and 131 transitions. [2018-10-22 15:40:24,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:40:24,136 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-10-22 15:40:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:24,147 INFO L225 Difference]: With dead ends: 103 [2018-10-22 15:40:24,148 INFO L226 Difference]: Without dead ends: 49 [2018-10-22 15:40:24,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:40:24,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-22 15:40:24,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-22 15:40:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-22 15:40:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2018-10-22 15:40:24,200 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 27 [2018-10-22 15:40:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:24,201 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2018-10-22 15:40:24,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:40:24,201 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2018-10-22 15:40:24,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-22 15:40:24,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:24,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:24,203 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:24,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:24,204 INFO L82 PathProgramCache]: Analyzing trace with hash -268683175, now seen corresponding path program 1 times [2018-10-22 15:40:24,204 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:24,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:24,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:24,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:24,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:40:24,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:40:24,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-22 15:40:24,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-22 15:40:24,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-22 15:40:24,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 15:40:24,429 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 3 states. [2018-10-22 15:40:24,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:24,722 INFO L93 Difference]: Finished difference Result 106 states and 125 transitions. [2018-10-22 15:40:24,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-22 15:40:24,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-10-22 15:40:24,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:24,725 INFO L225 Difference]: With dead ends: 106 [2018-10-22 15:40:24,725 INFO L226 Difference]: Without dead ends: 76 [2018-10-22 15:40:24,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 15:40:24,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-22 15:40:24,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 51. [2018-10-22 15:40:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-22 15:40:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2018-10-22 15:40:24,742 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 33 [2018-10-22 15:40:24,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:24,743 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2018-10-22 15:40:24,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-22 15:40:24,743 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2018-10-22 15:40:24,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-22 15:40:24,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:24,748 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, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:24,749 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:24,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:24,749 INFO L82 PathProgramCache]: Analyzing trace with hash 493161719, now seen corresponding path program 1 times [2018-10-22 15:40:24,749 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:24,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:24,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:24,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:24,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:40:24,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:24,881 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:24,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:24,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 15:40:25,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 15:40:25,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2018-10-22 15:40:25,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-22 15:40:25,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-22 15:40:25,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-22 15:40:25,124 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 7 states. [2018-10-22 15:40:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:26,125 INFO L93 Difference]: Finished difference Result 231 states and 278 transitions. [2018-10-22 15:40:26,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-22 15:40:26,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-10-22 15:40:26,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:26,134 INFO L225 Difference]: With dead ends: 231 [2018-10-22 15:40:26,134 INFO L226 Difference]: Without dead ends: 195 [2018-10-22 15:40:26,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-10-22 15:40:26,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-22 15:40:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 74. [2018-10-22 15:40:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-22 15:40:26,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2018-10-22 15:40:26,166 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 36 [2018-10-22 15:40:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:26,167 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2018-10-22 15:40:26,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-22 15:40:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2018-10-22 15:40:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-22 15:40:26,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:26,171 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:26,171 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:26,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:26,172 INFO L82 PathProgramCache]: Analyzing trace with hash -620855439, now seen corresponding path program 1 times [2018-10-22 15:40:26,172 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:26,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:26,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:26,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:26,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-22 15:40:26,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:26,480 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:26,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:26,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-22 15:40:26,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 15:40:26,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-10-22 15:40:26,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-22 15:40:26,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-22 15:40:26,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:40:26,592 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand 6 states. [2018-10-22 15:40:27,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:27,339 INFO L93 Difference]: Finished difference Result 257 states and 319 transitions. [2018-10-22 15:40:27,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-22 15:40:27,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2018-10-22 15:40:27,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:27,343 INFO L225 Difference]: With dead ends: 257 [2018-10-22 15:40:27,344 INFO L226 Difference]: Without dead ends: 213 [2018-10-22 15:40:27,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-22 15:40:27,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-22 15:40:27,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 112. [2018-10-22 15:40:27,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-22 15:40:27,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2018-10-22 15:40:27,375 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 50 [2018-10-22 15:40:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:27,376 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2018-10-22 15:40:27,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-22 15:40:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2018-10-22 15:40:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-22 15:40:27,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:27,380 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:27,381 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:27,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:27,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1329861818, now seen corresponding path program 1 times [2018-10-22 15:40:27,381 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:27,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:27,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:27,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:27,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-22 15:40:27,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:27,526 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:27,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:27,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:27,774 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-22 15:40:27,784 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 11 treesize of output 3 [2018-10-22 15:40:27,785 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:27,787 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:27,789 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:27,790 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-10-22 15:40:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-22 15:40:27,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 15:40:27,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-22 15:40:27,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-22 15:40:27,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-22 15:40:27,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:40:27,911 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand 11 states. [2018-10-22 15:40:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:28,582 INFO L93 Difference]: Finished difference Result 428 states and 502 transitions. [2018-10-22 15:40:28,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-22 15:40:28,587 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2018-10-22 15:40:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:28,593 INFO L225 Difference]: With dead ends: 428 [2018-10-22 15:40:28,593 INFO L226 Difference]: Without dead ends: 333 [2018-10-22 15:40:28,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-10-22 15:40:28,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-22 15:40:28,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 112. [2018-10-22 15:40:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-22 15:40:28,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2018-10-22 15:40:28,620 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 57 [2018-10-22 15:40:28,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:28,620 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2018-10-22 15:40:28,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-22 15:40:28,623 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2018-10-22 15:40:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-22 15:40:28,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:28,626 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:28,628 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:28,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:28,628 INFO L82 PathProgramCache]: Analyzing trace with hash 433473180, now seen corresponding path program 1 times [2018-10-22 15:40:28,628 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:28,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:28,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:28,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:28,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-22 15:40:28,861 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:28,861 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:28,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:28,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:29,227 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-10-22 15:40:29,236 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-22 15:40:29,236 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:29,242 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:29,244 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:29,244 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-10-22 15:40:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-22 15:40:29,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:40:29,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2018-10-22 15:40:29,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-22 15:40:29,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-22 15:40:29,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-10-22 15:40:29,294 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 12 states. [2018-10-22 15:40:30,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:30,149 INFO L93 Difference]: Finished difference Result 493 states and 580 transitions. [2018-10-22 15:40:30,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-22 15:40:30,149 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2018-10-22 15:40:30,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:30,152 INFO L225 Difference]: With dead ends: 493 [2018-10-22 15:40:30,152 INFO L226 Difference]: Without dead ends: 408 [2018-10-22 15:40:30,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2018-10-22 15:40:30,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-10-22 15:40:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 118. [2018-10-22 15:40:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-22 15:40:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2018-10-22 15:40:30,172 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 62 [2018-10-22 15:40:30,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:30,172 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2018-10-22 15:40:30,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-22 15:40:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2018-10-22 15:40:30,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-22 15:40:30,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:30,174 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:30,174 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:30,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:30,175 INFO L82 PathProgramCache]: Analyzing trace with hash 734864085, now seen corresponding path program 1 times [2018-10-22 15:40:30,175 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:30,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:30,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:30,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:30,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-22 15:40:30,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:30,391 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:30,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:30,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:30,472 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 [2018-10-22 15:40:30,472 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,549 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,550 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-22 15:40:30,780 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:30,781 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:30,782 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 [2018-10-22 15:40:30,782 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,788 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,789 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2018-10-22 15:40:30,814 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-22 15:40:30,816 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-22 15:40:30,817 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,818 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,825 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,826 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-10-22 15:40:30,865 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2018-10-22 15:40:30,869 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:30,872 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:30,873 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 31 [2018-10-22 15:40:30,874 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,884 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,896 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,896 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2018-10-22 15:40:30,925 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2018-10-22 15:40:30,929 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:30,931 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:30,932 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:30,933 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:30,935 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:30,936 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:30,938 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 78 [2018-10-22 15:40:30,939 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,957 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,972 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:30,973 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2018-10-22 15:40:31,019 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2018-10-22 15:40:31,041 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,043 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,044 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,044 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,045 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,046 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,048 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,049 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,050 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,052 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,053 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,055 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,057 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 149 [2018-10-22 15:40:31,059 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:31,106 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:31,124 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:31,124 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:49, output treesize:45 [2018-10-22 15:40:31,161 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 37 [2018-10-22 15:40:31,164 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,165 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,166 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,167 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,168 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,170 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,171 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,172 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,173 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,174 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,180 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,181 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,181 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,182 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,183 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,184 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,185 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,186 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,191 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,192 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,194 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 20 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 244 [2018-10-22 15:40:31,196 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:31,258 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:31,281 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:31,282 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2018-10-22 15:40:31,332 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 44 [2018-10-22 15:40:31,391 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,400 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,402 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,405 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,407 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,409 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,411 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,414 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,415 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,416 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,416 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,417 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,418 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,420 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,421 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,423 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,424 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,426 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,430 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,431 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,432 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,433 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,434 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,435 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,437 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,438 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,439 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,441 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,442 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,444 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,444 INFO L303 Elim1Store]: Index analysis took 108 ms [2018-10-22 15:40:31,447 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 30 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 363 [2018-10-22 15:40:31,448 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:31,625 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:31,661 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:31,662 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:67, output treesize:63 [2018-10-22 15:40:31,781 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 51 [2018-10-22 15:40:31,817 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,823 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,824 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,824 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,825 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,826 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,827 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,829 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,830 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,831 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,832 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,834 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,835 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,836 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,838 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,839 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,840 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,842 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,843 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,844 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,845 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,847 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,848 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,850 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,851 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,853 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,854 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,856 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,858 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,859 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,861 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,862 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,863 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,865 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,866 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,868 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,869 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,870 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,874 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,875 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,876 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,877 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:31,879 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 42 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 506 [2018-10-22 15:40:31,882 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:32,037 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:32,063 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:32,064 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:76, output treesize:72 [2018-10-22 15:40:32,143 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 58 [2018-10-22 15:40:32,148 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,149 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,149 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,150 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,151 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,153 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,154 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,155 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,157 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,158 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,159 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,161 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,162 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,163 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,164 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,166 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,167 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,168 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,170 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,171 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,172 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,174 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,175 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,176 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,178 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,179 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,180 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,182 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,184 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,186 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,187 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,188 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,190 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,191 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,193 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,194 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,196 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,197 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,198 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,200 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,201 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,203 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,247 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,248 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,249 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,250 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,265 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,269 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,270 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,271 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,271 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,272 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,273 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,274 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,277 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,278 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,278 INFO L303 Elim1Store]: Index analysis took 133 ms [2018-10-22 15:40:32,281 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 56 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 673 [2018-10-22 15:40:32,283 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:32,485 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:32,512 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:32,512 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:85, output treesize:81 [2018-10-22 15:40:32,619 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 65 [2018-10-22 15:40:32,627 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,629 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,654 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,669 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,671 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,671 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,672 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,673 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,679 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,682 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,713 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,739 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,754 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,781 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,811 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,833 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,862 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,884 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,914 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,941 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,942 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,943 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,944 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,945 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,945 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,946 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,947 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,947 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,948 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,950 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,951 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,952 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,953 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,954 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,955 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,956 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,958 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,959 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,960 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,962 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,963 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,964 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,965 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,967 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,968 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,969 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,970 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,972 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,973 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,974 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,975 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,976 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,978 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,979 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,980 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,981 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,983 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,984 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,985 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,986 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,987 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,989 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,990 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,991 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,993 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,994 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,995 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:32,999 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,001 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,003 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,005 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,007 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,007 INFO L303 Elim1Store]: Index analysis took 384 ms [2018-10-22 15:40:33,010 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 72 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 864 [2018-10-22 15:40:33,013 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:33,407 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:33,438 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:33,438 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:94, output treesize:90 [2018-10-22 15:40:33,576 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 72 [2018-10-22 15:40:33,617 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,639 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,657 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,660 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,664 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,666 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,668 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,671 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,672 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,672 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,673 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,674 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,674 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,676 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,677 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,678 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,679 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,681 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,682 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,683 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,684 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,685 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,687 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,688 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,689 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,690 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,691 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,693 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,694 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,695 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,696 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,697 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,699 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,700 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,701 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,702 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,704 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,705 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,706 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,707 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,708 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,710 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,711 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,712 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,713 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,715 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,716 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,717 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,719 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,720 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,721 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,722 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,724 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,725 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,726 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,728 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,729 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,730 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,732 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,733 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,734 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,736 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,737 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,738 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,740 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,741 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,742 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,744 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,745 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,746 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,747 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,749 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,750 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,751 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,753 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,754 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,755 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,757 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,758 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,759 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,761 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,762 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,763 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,764 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,766 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,767 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,768 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,770 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,771 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,772 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:33,773 INFO L303 Elim1Store]: Index analysis took 194 ms [2018-10-22 15:40:33,777 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 90 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 1079 [2018-10-22 15:40:33,780 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:34,229 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:34,264 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:34,264 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:103, output treesize:99 [2018-10-22 15:40:34,354 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 79 [2018-10-22 15:40:34,395 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,396 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,396 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,397 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,398 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,399 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,403 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,404 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,405 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,406 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,407 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,407 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,409 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,410 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,411 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,412 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,414 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,415 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,416 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,417 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,418 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,420 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,421 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,422 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,423 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,424 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,426 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,427 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,428 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,429 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,430 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,432 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,433 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,434 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,435 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,436 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,438 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,439 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,440 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,441 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,442 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,444 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,445 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,446 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,447 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,448 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,450 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,451 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,452 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,453 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,454 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,456 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,457 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,458 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,459 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,461 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,462 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,463 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,465 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,466 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,467 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,469 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,470 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,471 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,472 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,474 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,475 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,476 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,478 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,479 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,480 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,482 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,483 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,484 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,486 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,487 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,488 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,490 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,491 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,492 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,493 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,495 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,496 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,497 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,499 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,500 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,501 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,503 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,504 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,505 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,506 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,508 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,509 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,510 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,512 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,513 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,514 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,516 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,517 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,518 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,519 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,521 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,522 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,523 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,525 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,526 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,527 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,529 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,530 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,531 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:34,531 INFO L303 Elim1Store]: Index analysis took 174 ms [2018-10-22 15:40:34,535 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 110 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 1318 [2018-10-22 15:40:34,538 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,184 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,219 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,220 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:112, output treesize:108 [2018-10-22 15:40:35,444 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 109 treesize of output 110 [2018-10-22 15:40:35,455 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-22 15:40:35,456 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,484 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,529 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,530 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:127, output treesize:111 [2018-10-22 15:40:35,542 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 109 treesize of output 110 [2018-10-22 15:40:35,546 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-22 15:40:35,546 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,576 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,617 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,617 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:119, output treesize:108 [2018-10-22 15:40:35,662 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 109 treesize of output 110 [2018-10-22 15:40:35,666 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-22 15:40:35,666 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,720 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,760 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,761 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:119, output treesize:108 [2018-10-22 15:40:35,789 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 109 treesize of output 110 [2018-10-22 15:40:35,793 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-22 15:40:35,793 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,829 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,868 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:35,869 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:119, output treesize:108 [2018-10-22 15:40:36,548 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-22 15:40:36,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:40:36,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 21] total 26 [2018-10-22 15:40:36,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-22 15:40:36,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-22 15:40:36,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2018-10-22 15:40:36,582 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand 26 states. [2018-10-22 15:40:40,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:40,869 INFO L93 Difference]: Finished difference Result 848 states and 993 transitions. [2018-10-22 15:40:40,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-22 15:40:40,870 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 66 [2018-10-22 15:40:40,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:40,874 INFO L225 Difference]: With dead ends: 848 [2018-10-22 15:40:40,874 INFO L226 Difference]: Without dead ends: 760 [2018-10-22 15:40:40,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=798, Invalid=1854, Unknown=0, NotChecked=0, Total=2652 [2018-10-22 15:40:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2018-10-22 15:40:40,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 156. [2018-10-22 15:40:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-22 15:40:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 178 transitions. [2018-10-22 15:40:40,905 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 178 transitions. Word has length 66 [2018-10-22 15:40:40,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:40,906 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 178 transitions. [2018-10-22 15:40:40,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-22 15:40:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 178 transitions. [2018-10-22 15:40:40,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-22 15:40:40,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:40,908 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:40,908 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:40,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:40,908 INFO L82 PathProgramCache]: Analyzing trace with hash -242068552, now seen corresponding path program 2 times [2018-10-22 15:40:40,908 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:40,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:40,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:40,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:40,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-10-22 15:40:41,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:41,299 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:41,306 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:40:41,389 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:40:41,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:40:41,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:41,532 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-10-22 15:40:41,534 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-22 15:40:41,534 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:41,535 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:41,537 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:41,537 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-10-22 15:40:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-10-22 15:40:41,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:40:41,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 16 [2018-10-22 15:40:41,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-22 15:40:41,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-22 15:40:41,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2018-10-22 15:40:41,577 INFO L87 Difference]: Start difference. First operand 156 states and 178 transitions. Second operand 16 states. [2018-10-22 15:40:42,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:42,532 INFO L93 Difference]: Finished difference Result 838 states and 989 transitions. [2018-10-22 15:40:42,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-22 15:40:42,532 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 72 [2018-10-22 15:40:42,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:42,536 INFO L225 Difference]: With dead ends: 838 [2018-10-22 15:40:42,536 INFO L226 Difference]: Without dead ends: 793 [2018-10-22 15:40:42,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2018-10-22 15:40:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2018-10-22 15:40:42,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 231. [2018-10-22 15:40:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-22 15:40:42,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 266 transitions. [2018-10-22 15:40:42,577 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 266 transitions. Word has length 72 [2018-10-22 15:40:42,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:42,577 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 266 transitions. [2018-10-22 15:40:42,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-22 15:40:42,577 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 266 transitions. [2018-10-22 15:40:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-22 15:40:42,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:42,579 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:42,579 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:42,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:42,580 INFO L82 PathProgramCache]: Analyzing trace with hash -832931461, now seen corresponding path program 1 times [2018-10-22 15:40:42,580 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:42,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:42,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:42,581 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:40:42,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:43,745 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 34 [2018-10-22 15:40:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-22 15:40:44,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:44,341 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:44,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:44,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:44,692 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:44,715 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:40:44,716 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 27 [2018-10-22 15:40:44,740 INFO L477 Elim1Store]: Elim1 applied some 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 18 treesize of output 21 [2018-10-22 15:40:44,742 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-22 15:40:44,755 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-22 15:40:44,756 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:44,760 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:44,765 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:44,766 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:27, output treesize:4 [2018-10-22 15:40:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-22 15:40:44,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:40:44,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 25 [2018-10-22 15:40:44,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-22 15:40:44,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-22 15:40:44,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2018-10-22 15:40:44,869 INFO L87 Difference]: Start difference. First operand 231 states and 266 transitions. Second operand 25 states. [2018-10-22 15:40:46,867 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-22 15:40:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:47,914 INFO L93 Difference]: Finished difference Result 755 states and 887 transitions. [2018-10-22 15:40:47,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-22 15:40:47,915 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2018-10-22 15:40:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:47,918 INFO L225 Difference]: With dead ends: 755 [2018-10-22 15:40:47,921 INFO L226 Difference]: Without dead ends: 720 [2018-10-22 15:40:47,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=376, Invalid=1516, Unknown=0, NotChecked=0, Total=1892 [2018-10-22 15:40:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2018-10-22 15:40:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 462. [2018-10-22 15:40:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2018-10-22 15:40:47,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 531 transitions. [2018-10-22 15:40:47,988 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 531 transitions. Word has length 86 [2018-10-22 15:40:47,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:47,988 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 531 transitions. [2018-10-22 15:40:47,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-22 15:40:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 531 transitions. [2018-10-22 15:40:47,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-22 15:40:47,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:47,990 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:47,991 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:47,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:47,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1598928319, now seen corresponding path program 1 times [2018-10-22 15:40:47,991 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:47,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:47,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:47,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:47,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:48,391 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-22 15:40:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-10-22 15:40:48,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:48,515 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:48,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:48,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:48,713 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-22 15:40:48,734 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:40:48,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 9 [2018-10-22 15:40:48,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 15:40:48,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 15:40:48,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-22 15:40:48,735 INFO L87 Difference]: Start difference. First operand 462 states and 531 transitions. Second operand 9 states. [2018-10-22 15:40:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:49,136 INFO L93 Difference]: Finished difference Result 891 states and 1035 transitions. [2018-10-22 15:40:49,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-22 15:40:49,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2018-10-22 15:40:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:49,140 INFO L225 Difference]: With dead ends: 891 [2018-10-22 15:40:49,140 INFO L226 Difference]: Without dead ends: 887 [2018-10-22 15:40:49,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-10-22 15:40:49,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2018-10-22 15:40:49,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 664. [2018-10-22 15:40:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2018-10-22 15:40:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 765 transitions. [2018-10-22 15:40:49,265 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 765 transitions. Word has length 86 [2018-10-22 15:40:49,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:49,266 INFO L481 AbstractCegarLoop]: Abstraction has 664 states and 765 transitions. [2018-10-22 15:40:49,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 15:40:49,266 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 765 transitions. [2018-10-22 15:40:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-22 15:40:49,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:49,268 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:49,268 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:49,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:49,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1994974399, now seen corresponding path program 1 times [2018-10-22 15:40:49,269 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:49,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:49,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:49,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:49,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:50,094 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 10 [2018-10-22 15:40:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-22 15:40:51,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:51,311 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:51,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:51,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:51,580 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 28 treesize of output 28 [2018-10-22 15:40:51,586 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 24 treesize of output 17 [2018-10-22 15:40:51,586 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:51,606 INFO L682 Elim1Store]: detected equality via solver [2018-10-22 15:40:51,608 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 [2018-10-22 15:40:51,609 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:51,628 INFO L682 Elim1Store]: detected equality via solver [2018-10-22 15:40:51,630 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2018-10-22 15:40:51,630 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:51,642 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:51,650 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:51,650 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2018-10-22 15:40:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 31 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-22 15:40:51,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:40:51,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 21 [2018-10-22 15:40:51,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-22 15:40:51,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-22 15:40:51,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2018-10-22 15:40:51,704 INFO L87 Difference]: Start difference. First operand 664 states and 765 transitions. Second operand 21 states. [2018-10-22 15:40:52,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:52,976 INFO L93 Difference]: Finished difference Result 952 states and 1112 transitions. [2018-10-22 15:40:52,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-22 15:40:52,977 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 86 [2018-10-22 15:40:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:52,980 INFO L225 Difference]: With dead ends: 952 [2018-10-22 15:40:52,980 INFO L226 Difference]: Without dead ends: 868 [2018-10-22 15:40:52,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 78 SyntacticMatches, 12 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2018-10-22 15:40:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2018-10-22 15:40:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 693. [2018-10-22 15:40:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-10-22 15:40:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 795 transitions. [2018-10-22 15:40:53,102 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 795 transitions. Word has length 86 [2018-10-22 15:40:53,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:53,102 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 795 transitions. [2018-10-22 15:40:53,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-22 15:40:53,102 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 795 transitions. [2018-10-22 15:40:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-22 15:40:53,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:53,103 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:53,104 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:53,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:53,104 INFO L82 PathProgramCache]: Analyzing trace with hash -690855487, now seen corresponding path program 2 times [2018-10-22 15:40:53,104 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:53,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:53,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:53,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:53,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-22 15:40:53,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:53,895 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:53,904 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:40:54,000 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:40:54,001 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:40:54,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:54,136 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 26 treesize of output 26 [2018-10-22 15:40:54,161 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 11 treesize of output 3 [2018-10-22 15:40:54,162 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:54,220 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:54,246 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:54,246 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2018-10-22 15:40:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-22 15:40:54,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:40:54,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 17 [2018-10-22 15:40:54,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-22 15:40:54,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-22 15:40:54,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2018-10-22 15:40:54,338 INFO L87 Difference]: Start difference. First operand 693 states and 795 transitions. Second operand 17 states. [2018-10-22 15:40:54,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:54,834 INFO L93 Difference]: Finished difference Result 996 states and 1150 transitions. [2018-10-22 15:40:54,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-22 15:40:54,834 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 86 [2018-10-22 15:40:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:54,838 INFO L225 Difference]: With dead ends: 996 [2018-10-22 15:40:54,838 INFO L226 Difference]: Without dead ends: 876 [2018-10-22 15:40:54,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 80 SyntacticMatches, 12 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2018-10-22 15:40:54,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2018-10-22 15:40:54,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 693. [2018-10-22 15:40:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-10-22 15:40:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 789 transitions. [2018-10-22 15:40:54,957 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 789 transitions. Word has length 86 [2018-10-22 15:40:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:54,957 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 789 transitions. [2018-10-22 15:40:54,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-22 15:40:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 789 transitions. [2018-10-22 15:40:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-22 15:40:54,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:54,959 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:54,960 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:54,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:54,960 INFO L82 PathProgramCache]: Analyzing trace with hash -78331777, now seen corresponding path program 1 times [2018-10-22 15:40:54,960 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:54,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:54,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:54,961 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:40:54,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-22 15:40:55,324 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:55,324 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:55,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:55,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-22 15:40:55,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:40:55,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 13 [2018-10-22 15:40:55,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-22 15:40:55,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-22 15:40:55,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-10-22 15:40:55,472 INFO L87 Difference]: Start difference. First operand 693 states and 789 transitions. Second operand 13 states. [2018-10-22 15:40:56,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:56,866 INFO L93 Difference]: Finished difference Result 1765 states and 2050 transitions. [2018-10-22 15:40:56,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-22 15:40:56,866 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2018-10-22 15:40:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:56,871 INFO L225 Difference]: With dead ends: 1765 [2018-10-22 15:40:56,871 INFO L226 Difference]: Without dead ends: 1759 [2018-10-22 15:40:56,872 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2018-10-22 15:40:56,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2018-10-22 15:40:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 957. [2018-10-22 15:40:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2018-10-22 15:40:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1091 transitions. [2018-10-22 15:40:57,028 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1091 transitions. Word has length 86 [2018-10-22 15:40:57,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:57,028 INFO L481 AbstractCegarLoop]: Abstraction has 957 states and 1091 transitions. [2018-10-22 15:40:57,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-22 15:40:57,028 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1091 transitions. [2018-10-22 15:40:57,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-22 15:40:57,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:57,030 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:57,030 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:57,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:57,030 INFO L82 PathProgramCache]: Analyzing trace with hash -158863787, now seen corresponding path program 1 times [2018-10-22 15:40:57,030 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:57,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:57,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:57,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:57,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-22 15:40:57,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:57,144 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:57,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:57,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 45 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-22 15:40:57,249 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:40:57,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 7 [2018-10-22 15:40:57,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-22 15:40:57,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-22 15:40:57,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-22 15:40:57,251 INFO L87 Difference]: Start difference. First operand 957 states and 1091 transitions. Second operand 7 states. [2018-10-22 15:40:57,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:40:57,641 INFO L93 Difference]: Finished difference Result 1720 states and 1974 transitions. [2018-10-22 15:40:57,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-22 15:40:57,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2018-10-22 15:40:57,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:40:57,644 INFO L225 Difference]: With dead ends: 1720 [2018-10-22 15:40:57,644 INFO L226 Difference]: Without dead ends: 888 [2018-10-22 15:40:57,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-10-22 15:40:57,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2018-10-22 15:40:57,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 630. [2018-10-22 15:40:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2018-10-22 15:40:57,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 694 transitions. [2018-10-22 15:40:57,775 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 694 transitions. Word has length 92 [2018-10-22 15:40:57,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:40:57,775 INFO L481 AbstractCegarLoop]: Abstraction has 630 states and 694 transitions. [2018-10-22 15:40:57,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-22 15:40:57,775 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 694 transitions. [2018-10-22 15:40:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-22 15:40:57,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:40:57,777 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:40:57,778 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:40:57,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:40:57,778 INFO L82 PathProgramCache]: Analyzing trace with hash 2072580793, now seen corresponding path program 3 times [2018-10-22 15:40:57,778 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:40:57,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:40:57,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:57,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:40:57,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:40:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:40:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-10-22 15:40:58,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:40:58,442 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:40:58,449 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:40:58,700 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-22 15:40:58,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:40:58,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:40:58,855 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-10-22 15:40:58,857 INFO L682 Elim1Store]: detected equality via solver [2018-10-22 15:40:58,857 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 13 treesize of output 11 [2018-10-22 15:40:58,858 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:40:58,860 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:40:58,866 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-22 15:40:58,866 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:22, output treesize:11 [2018-10-22 15:40:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-10-22 15:40:58,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:40:58,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2018-10-22 15:40:58,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-22 15:40:58,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-22 15:40:58,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2018-10-22 15:40:58,914 INFO L87 Difference]: Start difference. First operand 630 states and 694 transitions. Second operand 17 states. [2018-10-22 15:41:00,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:41:00,733 INFO L93 Difference]: Finished difference Result 2735 states and 3004 transitions. [2018-10-22 15:41:00,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-22 15:41:00,733 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2018-10-22 15:41:00,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:41:00,740 INFO L225 Difference]: With dead ends: 2735 [2018-10-22 15:41:00,740 INFO L226 Difference]: Without dead ends: 2663 [2018-10-22 15:41:00,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=210, Invalid=1430, Unknown=0, NotChecked=0, Total=1640 [2018-10-22 15:41:00,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2018-10-22 15:41:00,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 609. [2018-10-22 15:41:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2018-10-22 15:41:00,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 669 transitions. [2018-10-22 15:41:00,858 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 669 transitions. Word has length 96 [2018-10-22 15:41:00,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:41:00,858 INFO L481 AbstractCegarLoop]: Abstraction has 609 states and 669 transitions. [2018-10-22 15:41:00,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-22 15:41:00,858 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 669 transitions. [2018-10-22 15:41:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-22 15:41:00,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:41:00,860 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:41:00,861 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:41:00,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:41:00,861 INFO L82 PathProgramCache]: Analyzing trace with hash 297096864, now seen corresponding path program 2 times [2018-10-22 15:41:00,861 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:41:00,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:41:00,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:41:00,862 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:41:00,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:41:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:41:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-22 15:41:01,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:41:01,270 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:41:01,277 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:41:01,384 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:41:01,384 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:41:01,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:41:01,489 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-10-22 15:41:01,490 INFO L682 Elim1Store]: detected equality via solver [2018-10-22 15:41:01,491 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 13 treesize of output 9 [2018-10-22 15:41:01,491 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:41:01,495 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:41:01,501 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:41:01,501 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:3 [2018-10-22 15:41:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 41 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-10-22 15:41:01,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:41:01,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2018-10-22 15:41:01,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-22 15:41:01,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-22 15:41:01,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-22 15:41:01,544 INFO L87 Difference]: Start difference. First operand 609 states and 669 transitions. Second operand 14 states. [2018-10-22 15:41:02,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:41:02,061 INFO L93 Difference]: Finished difference Result 724 states and 788 transitions. [2018-10-22 15:41:02,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-22 15:41:02,061 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 104 [2018-10-22 15:41:02,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:41:02,063 INFO L225 Difference]: With dead ends: 724 [2018-10-22 15:41:02,063 INFO L226 Difference]: Without dead ends: 585 [2018-10-22 15:41:02,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2018-10-22 15:41:02,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2018-10-22 15:41:02,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 565. [2018-10-22 15:41:02,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2018-10-22 15:41:02,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 621 transitions. [2018-10-22 15:41:02,174 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 621 transitions. Word has length 104 [2018-10-22 15:41:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:41:02,174 INFO L481 AbstractCegarLoop]: Abstraction has 565 states and 621 transitions. [2018-10-22 15:41:02,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-22 15:41:02,175 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 621 transitions. [2018-10-22 15:41:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-22 15:41:02,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:41:02,177 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:41:02,177 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:41:02,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:41:02,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1629711969, now seen corresponding path program 3 times [2018-10-22 15:41:02,177 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:41:02,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:41:02,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:41:02,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:41:02,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:41:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:41:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-10-22 15:41:03,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:41:03,158 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:41:03,172 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:41:03,498 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-22 15:41:03,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:41:03,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:41:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 45 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-22 15:41:05,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:41:05,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2018-10-22 15:41:05,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-22 15:41:05,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-22 15:41:05,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=321, Unknown=3, NotChecked=0, Total=380 [2018-10-22 15:41:05,743 INFO L87 Difference]: Start difference. First operand 565 states and 621 transitions. Second operand 20 states. [2018-10-22 15:41:24,779 WARN L179 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-22 15:41:39,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:41:39,460 INFO L93 Difference]: Finished difference Result 3252 states and 3587 transitions. [2018-10-22 15:41:39,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-22 15:41:39,460 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 113 [2018-10-22 15:41:39,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:41:39,469 INFO L225 Difference]: With dead ends: 3252 [2018-10-22 15:41:39,469 INFO L226 Difference]: Without dead ends: 2959 [2018-10-22 15:41:39,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=213, Invalid=1578, Unknown=15, NotChecked=0, Total=1806 [2018-10-22 15:41:39,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2018-10-22 15:41:39,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 702. [2018-10-22 15:41:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2018-10-22 15:41:39,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 771 transitions. [2018-10-22 15:41:39,655 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 771 transitions. Word has length 113 [2018-10-22 15:41:39,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:41:39,655 INFO L481 AbstractCegarLoop]: Abstraction has 702 states and 771 transitions. [2018-10-22 15:41:39,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-22 15:41:39,656 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 771 transitions. [2018-10-22 15:41:39,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-22 15:41:39,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:41:39,658 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1] [2018-10-22 15:41:39,658 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:41:39,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:41:39,659 INFO L82 PathProgramCache]: Analyzing trace with hash -156290083, now seen corresponding path program 4 times [2018-10-22 15:41:39,659 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:41:39,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:41:39,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:41:39,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:41:39,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:41:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:41:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 34 proven. 53 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-22 15:41:40,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:41:40,586 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:41:40,594 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-22 15:41:40,642 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-22 15:41:40,642 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:41:40,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:41:41,089 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 27 treesize of output 27 [2018-10-22 15:41:41,093 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2018-10-22 15:41:41,093 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:41:41,106 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 19 treesize of output 4 [2018-10-22 15:41:41,106 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-22 15:41:41,111 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:41:41,113 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:41:41,113 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:27, output treesize:4 [2018-10-22 15:41:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 36 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-22 15:41:41,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:41:41,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2018-10-22 15:41:41,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-22 15:41:41,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-22 15:41:41,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2018-10-22 15:41:41,182 INFO L87 Difference]: Start difference. First operand 702 states and 771 transitions. Second operand 29 states. [2018-10-22 15:41:46,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:41:46,140 INFO L93 Difference]: Finished difference Result 1460 states and 1598 transitions. [2018-10-22 15:41:46,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-22 15:41:46,140 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 124 [2018-10-22 15:41:46,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:41:46,144 INFO L225 Difference]: With dead ends: 1460 [2018-10-22 15:41:46,144 INFO L226 Difference]: Without dead ends: 1223 [2018-10-22 15:41:46,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 121 SyntacticMatches, 11 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1103, Invalid=5059, Unknown=0, NotChecked=0, Total=6162 [2018-10-22 15:41:46,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2018-10-22 15:41:46,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 944. [2018-10-22 15:41:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2018-10-22 15:41:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1026 transitions. [2018-10-22 15:41:46,385 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1026 transitions. Word has length 124 [2018-10-22 15:41:46,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:41:46,386 INFO L481 AbstractCegarLoop]: Abstraction has 944 states and 1026 transitions. [2018-10-22 15:41:46,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-22 15:41:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1026 transitions. [2018-10-22 15:41:46,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-22 15:41:46,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:41:46,388 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:41:46,388 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:41:46,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:41:46,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1744637985, now seen corresponding path program 5 times [2018-10-22 15:41:46,388 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:41:46,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:41:46,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:41:46,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:41:46,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:41:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:41:46,919 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-22 15:41:47,356 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-22 15:41:47,825 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-22 15:41:48,362 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-10-22 15:41:48,838 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2018-10-22 15:41:49,487 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 28 [2018-10-22 15:41:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 20 proven. 94 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-22 15:41:50,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:41:50,404 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:41:50,412 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-22 15:41:51,217 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-22 15:41:51,217 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:41:51,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:41:51,368 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-22 15:41:51,370 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-22 15:41:51,370 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:41:51,371 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:41:51,376 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:41:51,377 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2018-10-22 15:41:52,453 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:41:52,454 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:41:52,455 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 39 [2018-10-22 15:41:52,475 INFO L477 Elim1Store]: Elim1 applied some 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 2 case distinctions, treesize of input 28 treesize of output 37 [2018-10-22 15:41:52,477 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-10-22 15:41:52,521 INFO L682 Elim1Store]: detected equality via solver [2018-10-22 15:41:52,522 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 14 treesize of output 10 [2018-10-22 15:41:52,523 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-22 15:41:52,531 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:41:52,539 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:41:52,539 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:49, output treesize:4 [2018-10-22 15:41:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 20 proven. 140 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-22 15:41:52,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:41:52,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 44 [2018-10-22 15:41:52,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-22 15:41:52,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-22 15:41:52,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1634, Unknown=0, NotChecked=0, Total=1892 [2018-10-22 15:41:52,623 INFO L87 Difference]: Start difference. First operand 944 states and 1026 transitions. Second operand 44 states. [2018-10-22 15:41:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:41:57,638 INFO L93 Difference]: Finished difference Result 3609 states and 3941 transitions. [2018-10-22 15:41:57,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-22 15:41:57,638 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 124 [2018-10-22 15:41:57,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:41:57,646 INFO L225 Difference]: With dead ends: 3609 [2018-10-22 15:41:57,646 INFO L226 Difference]: Without dead ends: 2932 [2018-10-22 15:41:57,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 98 SyntacticMatches, 15 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=824, Invalid=5028, Unknown=0, NotChecked=0, Total=5852 [2018-10-22 15:41:57,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2018-10-22 15:41:57,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1546. [2018-10-22 15:41:57,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2018-10-22 15:41:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 1681 transitions. [2018-10-22 15:41:57,965 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 1681 transitions. Word has length 124 [2018-10-22 15:41:57,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:41:57,965 INFO L481 AbstractCegarLoop]: Abstraction has 1546 states and 1681 transitions. [2018-10-22 15:41:57,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-22 15:41:57,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 1681 transitions. [2018-10-22 15:41:57,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-22 15:41:57,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:41:57,968 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:41:57,968 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:41:57,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:41:57,969 INFO L82 PathProgramCache]: Analyzing trace with hash -562493149, now seen corresponding path program 3 times [2018-10-22 15:41:57,969 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:41:57,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:41:57,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:41:57,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:41:57,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:41:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:41:58,853 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-22 15:41:59,329 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-22 15:42:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 20 proven. 94 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-22 15:42:01,009 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:42:01,009 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:42:01,017 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:42:01,240 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-22 15:42:01,241 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:42:01,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:42:05,101 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 30 treesize of output 30 [2018-10-22 15:42:05,112 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 12 [2018-10-22 15:42:05,112 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-22 15:42:05,133 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-22 15:42:05,147 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-22 15:42:05,148 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:41, output treesize:30 [2018-10-22 15:42:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 9 proven. 98 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-22 15:42:05,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:42:05,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20] total 38 [2018-10-22 15:42:05,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-22 15:42:05,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-22 15:42:05,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2018-10-22 15:42:05,425 INFO L87 Difference]: Start difference. First operand 1546 states and 1681 transitions. Second operand 38 states. [2018-10-22 15:42:06,371 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2018-10-22 15:42:09,922 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-22 15:42:13,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:42:13,290 INFO L93 Difference]: Finished difference Result 2248 states and 2425 transitions. [2018-10-22 15:42:13,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-22 15:42:13,290 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 124 [2018-10-22 15:42:13,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:42:13,298 INFO L225 Difference]: With dead ends: 2248 [2018-10-22 15:42:13,298 INFO L226 Difference]: Without dead ends: 2130 [2018-10-22 15:42:13,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 110 SyntacticMatches, 9 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3221 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1175, Invalid=9331, Unknown=0, NotChecked=0, Total=10506 [2018-10-22 15:42:13,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2018-10-22 15:42:13,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1583. [2018-10-22 15:42:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2018-10-22 15:42:13,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 1712 transitions. [2018-10-22 15:42:13,832 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 1712 transitions. Word has length 124 [2018-10-22 15:42:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:42:13,833 INFO L481 AbstractCegarLoop]: Abstraction has 1583 states and 1712 transitions. [2018-10-22 15:42:13,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-22 15:42:13,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 1712 transitions. [2018-10-22 15:42:13,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-22 15:42:13,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:42:13,836 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:42:13,836 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:42:13,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:42:13,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1084248157, now seen corresponding path program 4 times [2018-10-22 15:42:13,837 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:42:13,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:42:13,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:42:13,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:42:13,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:42:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:42:14,651 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-22 15:42:15,008 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 17 [2018-10-22 15:42:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-22 15:42:15,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:42:15,903 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:42:15,913 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-22 15:42:15,960 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-22 15:42:15,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:42:15,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:42:16,184 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 28 treesize of output 28 [2018-10-22 15:42:16,187 INFO L682 Elim1Store]: detected equality via solver [2018-10-22 15:42:16,188 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 24 treesize of output 20 [2018-10-22 15:42:16,188 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:42:16,219 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 15 treesize of output 8 [2018-10-22 15:42:16,219 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-22 15:42:16,238 INFO L682 Elim1Store]: detected equality via solver [2018-10-22 15:42:16,239 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2018-10-22 15:42:16,240 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-22 15:42:16,249 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:42:16,255 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:42:16,255 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2018-10-22 15:42:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 36 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-22 15:42:16,323 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:42:16,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 25 [2018-10-22 15:42:16,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-22 15:42:16,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-22 15:42:16,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2018-10-22 15:42:16,324 INFO L87 Difference]: Start difference. First operand 1583 states and 1712 transitions. Second operand 25 states. [2018-10-22 15:42:18,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:42:18,027 INFO L93 Difference]: Finished difference Result 1982 states and 2137 transitions. [2018-10-22 15:42:18,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-22 15:42:18,027 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 124 [2018-10-22 15:42:18,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:42:18,032 INFO L225 Difference]: With dead ends: 1982 [2018-10-22 15:42:18,032 INFO L226 Difference]: Without dead ends: 1730 [2018-10-22 15:42:18,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 115 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2018-10-22 15:42:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2018-10-22 15:42:18,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1452. [2018-10-22 15:42:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2018-10-22 15:42:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1565 transitions. [2018-10-22 15:42:18,338 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1565 transitions. Word has length 124 [2018-10-22 15:42:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:42:18,338 INFO L481 AbstractCegarLoop]: Abstraction has 1452 states and 1565 transitions. [2018-10-22 15:42:18,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-22 15:42:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1565 transitions. [2018-10-22 15:42:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-22 15:42:18,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:42:18,341 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:42:18,341 INFO L424 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:42:18,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:42:18,341 INFO L82 PathProgramCache]: Analyzing trace with hash 5122494, now seen corresponding path program 2 times [2018-10-22 15:42:18,341 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:42:18,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:42:18,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:42:18,342 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:42:18,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:42:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:42:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-10-22 15:42:18,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:42:18,759 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:42:18,768 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:42:18,867 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:42:18,867 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:42:18,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:42:19,196 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 26 treesize of output 26 [2018-10-22 15:42:19,202 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 22 treesize of output 15 [2018-10-22 15:42:19,202 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:42:19,212 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 11 treesize of output 3 [2018-10-22 15:42:19,212 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-22 15:42:19,217 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:42:19,218 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:42:19,218 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2018-10-22 15:42:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 20 proven. 107 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-22 15:42:19,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:42:19,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18] total 26 [2018-10-22 15:42:19,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-22 15:42:19,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-22 15:42:19,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2018-10-22 15:42:19,294 INFO L87 Difference]: Start difference. First operand 1452 states and 1565 transitions. Second operand 26 states. [2018-10-22 15:42:30,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:42:30,524 INFO L93 Difference]: Finished difference Result 3777 states and 4057 transitions. [2018-10-22 15:42:30,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-22 15:42:30,525 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 127 [2018-10-22 15:42:30,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:42:30,537 INFO L225 Difference]: With dead ends: 3777 [2018-10-22 15:42:30,538 INFO L226 Difference]: Without dead ends: 3292 [2018-10-22 15:42:30,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=811, Invalid=4889, Unknown=0, NotChecked=0, Total=5700 [2018-10-22 15:42:30,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2018-10-22 15:42:30,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 1392. [2018-10-22 15:42:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1392 states. [2018-10-22 15:42:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1503 transitions. [2018-10-22 15:42:30,827 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1503 transitions. Word has length 127 [2018-10-22 15:42:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:42:30,827 INFO L481 AbstractCegarLoop]: Abstraction has 1392 states and 1503 transitions. [2018-10-22 15:42:30,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-22 15:42:30,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1503 transitions. [2018-10-22 15:42:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-22 15:42:30,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:42:30,829 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2018-10-22 15:42:30,829 INFO L424 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:42:30,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:42:30,829 INFO L82 PathProgramCache]: Analyzing trace with hash -49126908, now seen corresponding path program 6 times [2018-10-22 15:42:30,829 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:42:30,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:42:30,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:42:30,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:42:30,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:42:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:42:31,349 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-22 15:42:31,555 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-22 15:42:31,785 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-22 15:42:32,154 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-22 15:42:32,416 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-22 15:42:33,236 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2018-10-22 15:42:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 79 proven. 86 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-22 15:42:33,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:42:33,431 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:42:33,438 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-22 15:42:34,060 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-10-22 15:42:34,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:42:34,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:42:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 79 proven. 94 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-22 15:42:34,286 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:42:34,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 26 [2018-10-22 15:42:34,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-22 15:42:34,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-22 15:42:34,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2018-10-22 15:42:34,288 INFO L87 Difference]: Start difference. First operand 1392 states and 1503 transitions. Second operand 26 states. [2018-10-22 15:42:35,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:42:35,781 INFO L93 Difference]: Finished difference Result 2046 states and 2207 transitions. [2018-10-22 15:42:35,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-22 15:42:35,782 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 142 [2018-10-22 15:42:35,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:42:35,787 INFO L225 Difference]: With dead ends: 2046 [2018-10-22 15:42:35,787 INFO L226 Difference]: Without dead ends: 1685 [2018-10-22 15:42:35,788 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 134 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2018-10-22 15:42:35,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2018-10-22 15:42:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1249. [2018-10-22 15:42:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2018-10-22 15:42:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1351 transitions. [2018-10-22 15:42:36,067 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1351 transitions. Word has length 142 [2018-10-22 15:42:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:42:36,067 INFO L481 AbstractCegarLoop]: Abstraction has 1249 states and 1351 transitions. [2018-10-22 15:42:36,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-22 15:42:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1351 transitions. [2018-10-22 15:42:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-22 15:42:36,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:42:36,069 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:42:36,069 INFO L424 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:42:36,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:42:36,070 INFO L82 PathProgramCache]: Analyzing trace with hash 110789382, now seen corresponding path program 5 times [2018-10-22 15:42:36,070 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:42:36,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:42:36,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:42:36,071 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:42:36,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:42:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:42:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-10-22 15:42:36,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:42:36,803 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:42:36,811 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-22 15:42:38,009 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-22 15:42:38,009 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:42:38,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:42:38,019 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-22 15:42:38,021 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-22 15:42:38,021 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:42:38,023 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:42:38,028 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:42:38,028 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2018-10-22 15:42:38,186 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-10-22 15:42:38,188 INFO L682 Elim1Store]: detected equality via solver [2018-10-22 15:42:38,189 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 18 treesize of output 14 [2018-10-22 15:42:38,189 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:42:38,193 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:42:38,199 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:42:38,199 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:4 [2018-10-22 15:42:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-22 15:42:38,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:42:38,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 20 [2018-10-22 15:42:38,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-22 15:42:38,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-22 15:42:38,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2018-10-22 15:42:38,274 INFO L87 Difference]: Start difference. First operand 1249 states and 1351 transitions. Second operand 20 states. [2018-10-22 15:42:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:42:39,423 INFO L93 Difference]: Finished difference Result 1685 states and 1833 transitions. [2018-10-22 15:42:39,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-22 15:42:39,423 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 144 [2018-10-22 15:42:39,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:42:39,429 INFO L225 Difference]: With dead ends: 1685 [2018-10-22 15:42:39,429 INFO L226 Difference]: Without dead ends: 1681 [2018-10-22 15:42:39,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2018-10-22 15:42:39,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2018-10-22 15:42:39,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1282. [2018-10-22 15:42:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1282 states. [2018-10-22 15:42:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1384 transitions. [2018-10-22 15:42:39,731 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1384 transitions. Word has length 144 [2018-10-22 15:42:39,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:42:39,731 INFO L481 AbstractCegarLoop]: Abstraction has 1282 states and 1384 transitions. [2018-10-22 15:42:39,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-22 15:42:39,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1384 transitions. [2018-10-22 15:42:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-22 15:42:39,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:42:39,733 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:42:39,733 INFO L424 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:42:39,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:42:39,734 INFO L82 PathProgramCache]: Analyzing trace with hash -453745213, now seen corresponding path program 7 times [2018-10-22 15:42:39,734 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:42:39,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:42:39,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:42:39,734 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:42:39,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:42:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:42:40,937 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-10-22 15:42:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-10-22 15:42:41,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:42:41,033 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:42:41,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:42:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:42:41,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:42:41,399 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-10-22 15:42:41,400 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-22 15:42:41,400 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:42:41,401 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:42:41,402 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:42:41,402 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-10-22 15:42:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-22 15:42:41,492 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:42:41,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 27 [2018-10-22 15:42:41,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-22 15:42:41,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-22 15:42:41,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2018-10-22 15:42:41,493 INFO L87 Difference]: Start difference. First operand 1282 states and 1384 transitions. Second operand 27 states. [2018-10-22 15:42:46,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:42:46,487 INFO L93 Difference]: Finished difference Result 10015 states and 11007 transitions. [2018-10-22 15:42:46,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-22 15:42:46,487 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 151 [2018-10-22 15:42:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:42:46,502 INFO L225 Difference]: With dead ends: 10015 [2018-10-22 15:42:46,503 INFO L226 Difference]: Without dead ends: 9435 [2018-10-22 15:42:46,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=271, Invalid=2179, Unknown=0, NotChecked=0, Total=2450 [2018-10-22 15:42:46,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9435 states. [2018-10-22 15:42:47,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9435 to 2682. [2018-10-22 15:42:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2682 states. [2018-10-22 15:42:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 2901 transitions. [2018-10-22 15:42:47,184 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 2901 transitions. Word has length 151 [2018-10-22 15:42:47,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:42:47,184 INFO L481 AbstractCegarLoop]: Abstraction has 2682 states and 2901 transitions. [2018-10-22 15:42:47,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-22 15:42:47,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 2901 transitions. [2018-10-22 15:42:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-22 15:42:47,187 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:42:47,187 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2018-10-22 15:42:47,187 INFO L424 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:42:47,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:42:47,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1522775769, now seen corresponding path program 8 times [2018-10-22 15:42:47,188 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:42:47,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:42:47,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:42:47,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:42:47,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:42:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:42:47,925 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-22 15:42:48,569 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 10 [2018-10-22 15:42:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 66 proven. 207 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-22 15:42:51,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:42:51,301 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:42:51,308 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:42:51,437 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:42:51,437 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:42:51,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:42:51,797 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 27 treesize of output 27 [2018-10-22 15:42:51,802 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2018-10-22 15:42:51,803 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:42:51,817 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 9 [2018-10-22 15:42:51,817 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-22 15:42:51,830 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 19 treesize of output 4 [2018-10-22 15:42:51,831 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-22 15:42:51,842 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:42:51,843 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:42:51,843 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:27, output treesize:4 [2018-10-22 15:42:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 62 proven. 232 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-22 15:42:51,945 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:42:51,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 19] total 36 [2018-10-22 15:42:51,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-22 15:42:51,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-22 15:42:51,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2018-10-22 15:42:51,946 INFO L87 Difference]: Start difference. First operand 2682 states and 2901 transitions. Second operand 36 states. [2018-10-22 15:42:56,432 WARN L179 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2018-10-22 15:43:00,876 WARN L179 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2018-10-22 15:43:01,852 WARN L179 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2018-10-22 15:43:24,491 WARN L179 SmtUtils]: Spent 6.06 s on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2018-10-22 15:43:24,708 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-10-22 15:43:26,985 WARN L179 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2018-10-22 15:44:14,156 WARN L179 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2018-10-22 15:44:19,128 WARN L179 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-10-22 15:44:22,923 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2018-10-22 15:44:26,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:44:26,463 INFO L93 Difference]: Finished difference Result 7253 states and 7834 transitions. [2018-10-22 15:44:26,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-22 15:44:26,463 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 162 [2018-10-22 15:44:26,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:44:26,473 INFO L225 Difference]: With dead ends: 7253 [2018-10-22 15:44:26,473 INFO L226 Difference]: Without dead ends: 6568 [2018-10-22 15:44:26,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 150 SyntacticMatches, 14 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=852, Invalid=4547, Unknown=3, NotChecked=0, Total=5402 [2018-10-22 15:44:26,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6568 states. [2018-10-22 15:44:27,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6568 to 4410. [2018-10-22 15:44:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4410 states. [2018-10-22 15:44:27,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 4744 transitions. [2018-10-22 15:44:27,633 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 4744 transitions. Word has length 162 [2018-10-22 15:44:27,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:44:27,633 INFO L481 AbstractCegarLoop]: Abstraction has 4410 states and 4744 transitions. [2018-10-22 15:44:27,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-22 15:44:27,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 4744 transitions. [2018-10-22 15:44:27,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-22 15:44:27,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:44:27,640 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2018-10-22 15:44:27,640 INFO L424 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:44:27,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:44:27,640 INFO L82 PathProgramCache]: Analyzing trace with hash 482779047, now seen corresponding path program 9 times [2018-10-22 15:44:27,640 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:44:27,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:44:27,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:44:27,641 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:44:27,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:44:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:44:29,271 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 32 proven. 228 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-22 15:44:29,271 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:44:29,271 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:44:29,279 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:44:29,708 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-22 15:44:29,708 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:44:29,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:44:33,104 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 59 treesize of output 53 [2018-10-22 15:44:33,109 INFO L682 Elim1Store]: detected equality via solver [2018-10-22 15:44:33,111 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:44:33,112 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:44:33,113 INFO L700 Elim1Store]: detected not equals via solver [2018-10-22 15:44:33,113 INFO L682 Elim1Store]: detected equality via solver [2018-10-22 15:44:33,119 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 69 [2018-10-22 15:44:33,120 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-22 15:44:33,150 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:44:33,166 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-22 15:44:33,166 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:80, output treesize:18 [2018-10-22 15:44:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 122 proven. 129 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-22 15:44:33,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:44:33,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 31] total 49 [2018-10-22 15:44:33,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-22 15:44:33,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-22 15:44:33,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=2034, Unknown=0, NotChecked=0, Total=2352 [2018-10-22 15:44:33,548 INFO L87 Difference]: Start difference. First operand 4410 states and 4744 transitions. Second operand 49 states. Received shutdown request... [2018-10-22 15:44:35,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-22 15:44:35,443 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-22 15:44:35,450 WARN L205 ceAbstractionStarter]: Timeout [2018-10-22 15:44:35,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:44:35 BoogieIcfgContainer [2018-10-22 15:44:35,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:44:35,451 INFO L168 Benchmark]: Toolchain (without parser) took 252738.14 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 976.7 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -916.5 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. [2018-10-22 15:44:35,452 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:44:35,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.04 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-10-22 15:44:35,452 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.87 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:44:35,452 INFO L168 Benchmark]: Boogie Preprocessor took 37.84 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:44:35,452 INFO L168 Benchmark]: RCFGBuilder took 677.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -767.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2018-10-22 15:44:35,453 INFO L168 Benchmark]: TraceAbstraction took 251651.76 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 244.3 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -162.7 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2018-10-22 15:44:35,454 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 311.04 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.87 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 37.84 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 677.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -767.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251651.76 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 244.3 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -162.7 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 6]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 6). Cancelled while BasicCegarLoop was constructing difference of abstraction (4410states) and FLOYD_HOARE automaton (currently 28 states, 49 states before enhancement),while ReachableStatesComputation was computing reachable states (150 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. TIMEOUT Result, 251.5s OverallTime, 27 OverallIterations, 9 TraceHistogramMax, 186.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2338 SDtfs, 15126 SDslu, 21059 SDs, 0 SdLazy, 22037 SolverSat, 2311 SolverUnsat, 79 SolverUnknown, 0 SolverNotchecked, 110.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3428 GetRequests, 2343 SyntacticMatches, 125 SemanticMatches, 960 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14158 ImplicationChecksByTransitivity, 103.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4410occurred in iteration=26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.4s AutomataMinimizationTime, 26 MinimizatonAttempts, 22290 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 5.9s SatisfiabilityAnalysisTime, 51.0s InterpolantComputationTime, 5184 NumberOfCodeBlocks, 5020 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 5132 ConstructedInterpolants, 93 QuantifiedInterpolants, 7701531 SizeOfPredicates, 222 NumberOfNonLiveVariables, 5497 ConjunctsInSsa, 804 ConjunctsInUnsatCore, 52 InterpolantComputations, 5 PerfectInterpolantSequences, 3974/6828 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown