java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 09:56:12,011 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 09:56:12,013 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 09:56:12,025 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 09:56:12,025 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 09:56:12,026 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 09:56:12,028 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 09:56:12,029 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 09:56:12,031 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 09:56:12,032 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 09:56:12,035 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 09:56:12,035 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 09:56:12,036 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 09:56:12,037 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 09:56:12,040 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 09:56:12,041 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 09:56:12,042 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 09:56:12,052 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 09:56:12,056 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 09:56:12,059 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 09:56:12,060 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 09:56:12,064 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 09:56:12,066 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 09:56:12,066 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 09:56:12,067 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 09:56:12,068 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 09:56:12,072 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 09:56:12,072 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 09:56:12,073 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 09:56:12,076 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 09:56:12,076 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 09:56:12,077 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 09:56:12,078 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 09:56:12,078 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 09:56:12,079 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 09:56:12,080 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 09:56:12,081 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 09:56:12,110 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 09:56:12,110 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 09:56:12,111 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 09:56:12,113 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 09:56:12,113 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 09:56:12,113 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 09:56:12,113 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 09:56:12,114 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 09:56:12,114 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 09:56:12,114 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 09:56:12,114 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 09:56:12,114 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 09:56:12,116 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 09:56:12,116 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 09:56:12,116 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 09:56:12,116 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 09:56:12,116 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 09:56:12,117 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 09:56:12,117 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 09:56:12,117 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 09:56:12,117 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 09:56:12,119 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 09:56:12,120 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 09:56:12,120 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 09:56:12,120 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 09:56:12,120 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 09:56:12,120 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 09:56:12,121 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 09:56:12,121 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 09:56:12,121 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 09:56:12,121 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 09:56:12,121 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 09:56:12,121 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 09:56:12,122 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 09:56:12,204 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 09:56:12,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 09:56:12,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 09:56:12,223 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 09:56:12,224 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 09:56:12,224 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-09-18 09:56:12,602 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b533b578e/488d4023dcef4fe8b060841d646b1ca6/FLAGa1e1466f9 [2018-09-18 09:56:12,759 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 09:56:12,760 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-09-18 09:56:12,768 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b533b578e/488d4023dcef4fe8b060841d646b1ca6/FLAGa1e1466f9 [2018-09-18 09:56:12,784 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b533b578e/488d4023dcef4fe8b060841d646b1ca6 [2018-09-18 09:56:12,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 09:56:12,801 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 09:56:12,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 09:56:12,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 09:56:12,808 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 09:56:12,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 09:56:12" (1/1) ... [2018-09-18 09:56:12,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d736107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:12, skipping insertion in model container [2018-09-18 09:56:12,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 09:56:12" (1/1) ... [2018-09-18 09:56:12,825 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 09:56:13,048 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 09:56:13,067 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 09:56:13,110 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 09:56:13,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:13 WrapperNode [2018-09-18 09:56:13,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 09:56:13,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 09:56:13,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 09:56:13,142 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 09:56:13,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:13" (1/1) ... [2018-09-18 09:56:13,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:13" (1/1) ... [2018-09-18 09:56:13,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 09:56:13,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 09:56:13,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 09:56:13,171 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 09:56:13,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:13" (1/1) ... [2018-09-18 09:56:13,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:13" (1/1) ... [2018-09-18 09:56:13,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:13" (1/1) ... [2018-09-18 09:56:13,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:13" (1/1) ... [2018-09-18 09:56:13,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:13" (1/1) ... [2018-09-18 09:56:13,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:13" (1/1) ... [2018-09-18 09:56:13,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:13" (1/1) ... [2018-09-18 09:56:13,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 09:56:13,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 09:56:13,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 09:56:13,209 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 09:56:13,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 09:56:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 09:56:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 09:56:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 09:56:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 09:56:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 09:56:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 09:56:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-18 09:56:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-18 09:56:13,963 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 09:56:13,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 09:56:13 BoogieIcfgContainer [2018-09-18 09:56:13,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 09:56:13,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 09:56:13,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 09:56:13,969 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 09:56:13,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 09:56:12" (1/3) ... [2018-09-18 09:56:13,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dab1aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 09:56:13, skipping insertion in model container [2018-09-18 09:56:13,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 09:56:13" (2/3) ... [2018-09-18 09:56:13,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dab1aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 09:56:13, skipping insertion in model container [2018-09-18 09:56:13,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 09:56:13" (3/3) ... [2018-09-18 09:56:13,973 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_01_true-unreach-call.i [2018-09-18 09:56:13,984 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 09:56:13,994 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 09:56:14,044 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 09:56:14,045 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 09:56:14,045 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 09:56:14,045 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 09:56:14,045 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 09:56:14,046 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 09:56:14,046 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 09:56:14,046 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 09:56:14,046 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 09:56:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-09-18 09:56:14,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-18 09:56:14,073 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:14,074 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 09:56:14,075 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:14,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1095333928, now seen corresponding path program 1 times [2018-09-18 09:56:14,084 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:14,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:14,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:14,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:14,131 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 09:56:14,280 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 09:56:14,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-18 09:56:14,281 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 09:56:14,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-18 09:56:14,299 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-18 09:56:14,300 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-18 09:56:14,303 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-09-18 09:56:14,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:14,333 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2018-09-18 09:56:14,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-18 09:56:14,335 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-09-18 09:56:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:14,347 INFO L225 Difference]: With dead ends: 68 [2018-09-18 09:56:14,348 INFO L226 Difference]: Without dead ends: 34 [2018-09-18 09:56:14,353 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-18 09:56:14,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-18 09:56:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-09-18 09:56:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-18 09:56:14,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-18 09:56:14,393 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2018-09-18 09:56:14,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:14,394 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-18 09:56:14,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-18 09:56:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-18 09:56:14,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-18 09:56:14,395 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:14,396 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 09:56:14,396 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:14,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1016412537, now seen corresponding path program 1 times [2018-09-18 09:56:14,397 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:14,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:14,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:14,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:14,400 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 09:56:14,530 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 09:56:14,530 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 09:56:14,531 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 09:56:14,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 09:56:14,533 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 09:56:14,533 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 09:56:14,534 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 3 states. [2018-09-18 09:56:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:14,638 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2018-09-18 09:56:14,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 09:56:14,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-09-18 09:56:14,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:14,640 INFO L225 Difference]: With dead ends: 62 [2018-09-18 09:56:14,640 INFO L226 Difference]: Without dead ends: 38 [2018-09-18 09:56:14,642 INFO L604 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 [2018-09-18 09:56:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-18 09:56:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-09-18 09:56:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-18 09:56:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-09-18 09:56:14,650 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 21 [2018-09-18 09:56:14,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:14,650 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-09-18 09:56:14,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 09:56:14,651 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-09-18 09:56:14,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-18 09:56:14,652 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:14,652 INFO L376 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] [2018-09-18 09:56:14,652 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:14,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1891642786, now seen corresponding path program 1 times [2018-09-18 09:56:14,653 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:14,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:14,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:14,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:14,654 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 09:56:14,923 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:14,924 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 09:56:14,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:14,940 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 09:56:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:14,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 09:56:15,236 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 09:56:15,379 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:15,380 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 09:56:15,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:15,417 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 09:56:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:15,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-18 09:56:15,566 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-18 09:56:15,712 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 09:56:15,712 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 4, 4] total 15 [2018-09-18 09:56:15,712 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 09:56:15,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 09:56:15,713 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 09:56:15,714 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-09-18 09:56:15,714 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 4 states. [2018-09-18 09:56:15,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:15,874 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-09-18 09:56:15,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 09:56:15,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-09-18 09:56:15,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:15,879 INFO L225 Difference]: With dead ends: 65 [2018-09-18 09:56:15,879 INFO L226 Difference]: Without dead ends: 54 [2018-09-18 09:56:15,880 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-09-18 09:56:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-18 09:56:15,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2018-09-18 09:56:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-09-18 09:56:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2018-09-18 09:56:15,893 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 25 [2018-09-18 09:56:15,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:15,893 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2018-09-18 09:56:15,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 09:56:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2018-09-18 09:56:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-18 09:56:15,895 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:15,895 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 09:56:15,896 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:15,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1563120855, now seen corresponding path program 1 times [2018-09-18 09:56:15,896 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:15,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:15,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:15,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:15,898 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-18 09:56:16,021 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:16,021 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 09:56:16,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:16,030 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 09:56:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:16,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:16,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-18 09:56:16,170 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-18 09:56:16,486 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:16,486 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 09:56:16,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:16,507 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 09:56:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:16,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 09:56:16,567 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 09:56:16,604 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 09:56:16,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4, 4, 4] total 10 [2018-09-18 09:56:16,605 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 09:56:16,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 09:56:16,606 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 09:56:16,607 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-09-18 09:56:16,607 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 4 states. [2018-09-18 09:56:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:16,722 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2018-09-18 09:56:16,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 09:56:16,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-09-18 09:56:16,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:16,725 INFO L225 Difference]: With dead ends: 71 [2018-09-18 09:56:16,725 INFO L226 Difference]: Without dead ends: 53 [2018-09-18 09:56:16,726 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-09-18 09:56:16,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-18 09:56:16,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2018-09-18 09:56:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-09-18 09:56:16,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-09-18 09:56:16,736 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 29 [2018-09-18 09:56:16,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:16,737 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-09-18 09:56:16,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 09:56:16,737 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-09-18 09:56:16,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-18 09:56:16,738 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:16,738 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 09:56:16,739 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:16,739 INFO L82 PathProgramCache]: Analyzing trace with hash -960311201, now seen corresponding path program 1 times [2018-09-18 09:56:16,739 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:16,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:16,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:16,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:16,741 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 09:56:16,950 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:16,950 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 09:56:16,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:16,968 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 09:56:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:17,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 09:56:17,256 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 09:56:17,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:17,312 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 09:56:17,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:17,327 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 09:56:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:17,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 09:56:17,401 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:17,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 09:56:17,495 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 09:56:17,496 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4, 4, 4] total 12 [2018-09-18 09:56:17,496 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 09:56:17,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 09:56:17,496 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 09:56:17,497 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-18 09:56:17,497 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 4 states. [2018-09-18 09:56:17,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:17,557 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2018-09-18 09:56:17,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 09:56:17,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-18 09:56:17,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:17,559 INFO L225 Difference]: With dead ends: 69 [2018-09-18 09:56:17,559 INFO L226 Difference]: Without dead ends: 44 [2018-09-18 09:56:17,560 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-18 09:56:17,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-18 09:56:17,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2018-09-18 09:56:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-09-18 09:56:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2018-09-18 09:56:17,567 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 34 [2018-09-18 09:56:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:17,568 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2018-09-18 09:56:17,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 09:56:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2018-09-18 09:56:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-18 09:56:17,569 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:17,570 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-18 09:56:17,570 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:17,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1749673096, now seen corresponding path program 1 times [2018-09-18 09:56:17,570 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:17,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:17,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:17,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:17,572 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 09:56:17,782 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:17,782 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 09:56:17,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:17,800 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 09:56:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:17,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 09:56:17,895 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 09:56:17,992 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:17,993 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 09:56:18,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:18,010 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 09:56:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:18,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 09:56:18,052 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 09:56:18,085 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 09:56:18,086 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 8 [2018-09-18 09:56:18,086 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 09:56:18,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 09:56:18,087 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 09:56:18,087 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-09-18 09:56:18,087 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 6 states. [2018-09-18 09:56:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:18,247 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2018-09-18 09:56:18,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 09:56:18,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-09-18 09:56:18,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:18,249 INFO L225 Difference]: With dead ends: 78 [2018-09-18 09:56:18,249 INFO L226 Difference]: Without dead ends: 48 [2018-09-18 09:56:18,250 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-09-18 09:56:18,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-18 09:56:18,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2018-09-18 09:56:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-09-18 09:56:18,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2018-09-18 09:56:18,262 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 38 [2018-09-18 09:56:18,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:18,263 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2018-09-18 09:56:18,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 09:56:18,263 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2018-09-18 09:56:18,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-18 09:56:18,265 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:18,270 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 09:56:18,270 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:18,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1413654399, now seen corresponding path program 2 times [2018-09-18 09:56:18,270 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:18,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:18,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:18,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:18,272 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:18,678 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-09-18 09:56:18,697 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 09:56:18,697 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:18,698 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 09:56:18,709 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-18 09:56:18,709 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 09:56:18,750 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-18 09:56:18,751 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:18,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-18 09:56:18,819 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-18 09:56:18,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:18,903 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 09:56:18,919 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-18 09:56:18,920 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 09:56:19,023 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-18 09:56:19,023 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:19,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 09:56:19,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 09:56:19,178 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 09:56:19,179 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 4, 4] total 16 [2018-09-18 09:56:19,179 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 09:56:19,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 09:56:19,180 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 09:56:19,180 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-09-18 09:56:19,181 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 9 states. [2018-09-18 09:56:19,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:19,567 INFO L93 Difference]: Finished difference Result 118 states and 141 transitions. [2018-09-18 09:56:19,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-18 09:56:19,574 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2018-09-18 09:56:19,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:19,575 INFO L225 Difference]: With dead ends: 118 [2018-09-18 09:56:19,575 INFO L226 Difference]: Without dead ends: 81 [2018-09-18 09:56:19,576 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2018-09-18 09:56:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-18 09:56:19,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 59. [2018-09-18 09:56:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-18 09:56:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2018-09-18 09:56:19,596 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 42 [2018-09-18 09:56:19,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:19,599 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2018-09-18 09:56:19,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 09:56:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2018-09-18 09:56:19,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-18 09:56:19,601 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:19,601 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-18 09:56:19,604 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:19,605 INFO L82 PathProgramCache]: Analyzing trace with hash 278470409, now seen corresponding path program 1 times [2018-09-18 09:56:19,605 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:19,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:19,606 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-18 09:56:19,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:19,607 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-18 09:56:19,768 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:19,768 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 09:56:19,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:19,778 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 09:56:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:19,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-18 09:56:20,078 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-18 09:56:20,138 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:20,138 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 09:56:20,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:20,154 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 09:56:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:20,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-09-18 09:56:20,469 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-09-18 09:56:20,727 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 09:56:20,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 16 [2018-09-18 09:56:20,727 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 09:56:20,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-18 09:56:20,728 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-18 09:56:20,729 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-09-18 09:56:20,729 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 8 states. [2018-09-18 09:56:20,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:20,831 INFO L93 Difference]: Finished difference Result 115 states and 132 transitions. [2018-09-18 09:56:20,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-18 09:56:20,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2018-09-18 09:56:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:20,833 INFO L225 Difference]: With dead ends: 115 [2018-09-18 09:56:20,833 INFO L226 Difference]: Without dead ends: 72 [2018-09-18 09:56:20,834 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-09-18 09:56:20,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-09-18 09:56:20,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2018-09-18 09:56:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-18 09:56:20,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-18 09:56:20,843 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 55 [2018-09-18 09:56:20,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:20,843 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-18 09:56:20,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-18 09:56:20,844 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-18 09:56:20,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-18 09:56:20,845 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:20,845 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2018-09-18 09:56:20,845 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:20,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1467249952, now seen corresponding path program 2 times [2018-09-18 09:56:20,846 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:20,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:20,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:20,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:20,847 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-09-18 09:56:21,082 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:21,082 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 09:56:21,090 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-18 09:56:21,090 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 09:56:21,113 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-18 09:56:21,113 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:21,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-18 09:56:21,163 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-18 09:56:21,296 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 09:56:21,296 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [12] total 16 [2018-09-18 09:56:21,297 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 09:56:21,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 09:56:21,297 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 09:56:21,298 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-09-18 09:56:21,298 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 4 states. [2018-09-18 09:56:21,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:21,431 INFO L93 Difference]: Finished difference Result 117 states and 135 transitions. [2018-09-18 09:56:21,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 09:56:21,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-09-18 09:56:21,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:21,432 INFO L225 Difference]: With dead ends: 117 [2018-09-18 09:56:21,433 INFO L226 Difference]: Without dead ends: 67 [2018-09-18 09:56:21,433 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-09-18 09:56:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-18 09:56:21,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2018-09-18 09:56:21,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-18 09:56:21,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2018-09-18 09:56:21,443 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 59 [2018-09-18 09:56:21,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:21,443 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2018-09-18 09:56:21,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 09:56:21,443 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2018-09-18 09:56:21,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-18 09:56:21,444 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:21,445 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2018-09-18 09:56:21,445 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:21,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1114161570, now seen corresponding path program 3 times [2018-09-18 09:56:21,445 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:21,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:21,446 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-18 09:56:21,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:21,447 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-18 09:56:21,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:21,805 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 09:56:21,817 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-18 09:56:21,817 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-18 09:56:21,840 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-18 09:56:21,840 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:21,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-09-18 09:56:21,952 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-09-18 09:56:22,111 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:22,112 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 09:56:22,134 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-18 09:56:22,135 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-18 09:56:22,358 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-18 09:56:22,359 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:22,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-09-18 09:56:22,374 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-09-18 09:56:22,447 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 09:56:22,448 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 5, 5] total 20 [2018-09-18 09:56:22,448 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 09:56:22,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-18 09:56:22,449 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-18 09:56:22,449 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2018-09-18 09:56:22,449 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 17 states. [2018-09-18 09:56:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:23,511 INFO L93 Difference]: Finished difference Result 160 states and 190 transitions. [2018-09-18 09:56:23,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-18 09:56:23,512 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2018-09-18 09:56:23,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:23,513 INFO L225 Difference]: With dead ends: 160 [2018-09-18 09:56:23,514 INFO L226 Difference]: Without dead ends: 126 [2018-09-18 09:56:23,515 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=319, Invalid=941, Unknown=0, NotChecked=0, Total=1260 [2018-09-18 09:56:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-09-18 09:56:23,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 113. [2018-09-18 09:56:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-09-18 09:56:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2018-09-18 09:56:23,530 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 59 [2018-09-18 09:56:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:23,531 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2018-09-18 09:56:23,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-18 09:56:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2018-09-18 09:56:23,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-18 09:56:23,532 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:23,532 INFO L376 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 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] [2018-09-18 09:56:23,533 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:23,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1981460160, now seen corresponding path program 1 times [2018-09-18 09:56:23,533 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:23,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:23,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-18 09:56:23,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:23,534 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 09:56:23,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:23,695 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 09:56:23,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:23,702 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 09:56:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:23,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 09:56:23,775 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 09:56:23,896 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:23,897 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 09:56:23,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:23,912 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 09:56:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:23,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 09:56:23,976 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 09:56:24,055 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 09:56:24,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 11 [2018-09-18 09:56:24,055 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 09:56:24,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 09:56:24,056 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 09:56:24,056 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2018-09-18 09:56:24,057 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand 10 states. [2018-09-18 09:56:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:24,149 INFO L93 Difference]: Finished difference Result 212 states and 244 transitions. [2018-09-18 09:56:24,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 09:56:24,150 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2018-09-18 09:56:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:24,153 INFO L225 Difference]: With dead ends: 212 [2018-09-18 09:56:24,153 INFO L226 Difference]: Without dead ends: 119 [2018-09-18 09:56:24,154 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 257 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2018-09-18 09:56:24,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-18 09:56:24,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2018-09-18 09:56:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-18 09:56:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2018-09-18 09:56:24,167 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 67 [2018-09-18 09:56:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:24,167 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2018-09-18 09:56:24,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 09:56:24,167 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2018-09-18 09:56:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-18 09:56:24,169 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:24,169 INFO L376 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 09:56:24,169 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:24,170 INFO L82 PathProgramCache]: Analyzing trace with hash -539610151, now seen corresponding path program 2 times [2018-09-18 09:56:24,170 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:24,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:24,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 09:56:24,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:24,171 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 09:56:24,354 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:24,354 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 09:56:24,363 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-18 09:56:24,363 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 09:56:24,389 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-18 09:56:24,390 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:24,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 09:56:24,587 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 09:56:24,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:24,732 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 09:56:24,748 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-18 09:56:24,748 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 09:56:24,864 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-18 09:56:24,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:24,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-18 09:56:24,889 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-18 09:56:24,967 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 09:56:24,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 6, 6] total 15 [2018-09-18 09:56:24,967 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 09:56:24,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-18 09:56:24,968 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-18 09:56:24,968 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2018-09-18 09:56:24,968 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand 12 states. [2018-09-18 09:56:25,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:25,074 INFO L93 Difference]: Finished difference Result 216 states and 248 transitions. [2018-09-18 09:56:25,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 09:56:25,074 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2018-09-18 09:56:25,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:25,076 INFO L225 Difference]: With dead ends: 216 [2018-09-18 09:56:25,076 INFO L226 Difference]: Without dead ends: 123 [2018-09-18 09:56:25,077 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 269 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2018-09-18 09:56:25,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-18 09:56:25,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2018-09-18 09:56:25,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-18 09:56:25,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 137 transitions. [2018-09-18 09:56:25,090 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 137 transitions. Word has length 71 [2018-09-18 09:56:25,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:25,090 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 137 transitions. [2018-09-18 09:56:25,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-18 09:56:25,091 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 137 transitions. [2018-09-18 09:56:25,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-09-18 09:56:25,092 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:25,092 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 09:56:25,092 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:25,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1202160754, now seen corresponding path program 3 times [2018-09-18 09:56:25,093 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:25,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:25,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-18 09:56:25,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:25,094 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-18 09:56:25,204 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:25,205 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 09:56:25,214 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-18 09:56:25,214 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-18 09:56:25,240 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-18 09:56:25,241 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:25,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 09:56:25,312 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:25,374 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 09:56:25,396 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:25,396 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 09:56:25,411 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-18 09:56:25,411 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-18 09:56:25,935 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-18 09:56:25,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:25,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 09:56:25,954 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:25,973 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 09:56:25,975 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 09:56:25,975 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 14 [2018-09-18 09:56:25,975 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 09:56:25,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 09:56:25,976 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 09:56:25,976 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2018-09-18 09:56:25,977 INFO L87 Difference]: Start difference. First operand 121 states and 137 transitions. Second operand 10 states. [2018-09-18 09:56:26,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:26,677 INFO L93 Difference]: Finished difference Result 314 states and 383 transitions. [2018-09-18 09:56:26,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-18 09:56:26,678 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2018-09-18 09:56:26,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:26,681 INFO L225 Difference]: With dead ends: 314 [2018-09-18 09:56:26,682 INFO L226 Difference]: Without dead ends: 241 [2018-09-18 09:56:26,682 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=299, Invalid=571, Unknown=0, NotChecked=0, Total=870 [2018-09-18 09:56:26,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-09-18 09:56:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 179. [2018-09-18 09:56:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-18 09:56:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 207 transitions. [2018-09-18 09:56:26,698 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 207 transitions. Word has length 75 [2018-09-18 09:56:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:26,698 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 207 transitions. [2018-09-18 09:56:26,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 09:56:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 207 transitions. [2018-09-18 09:56:26,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-18 09:56:26,700 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:26,700 INFO L376 BasicCegarLoop]: trace histogram [12, 9, 9, 8, 6, 5, 5, 4, 4, 4, 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] [2018-09-18 09:56:26,700 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:26,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1505114026, now seen corresponding path program 4 times [2018-09-18 09:56:26,700 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:26,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:26,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-18 09:56:26,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:26,701 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 106 proven. 18 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-09-18 09:56:26,845 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:26,845 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 09:56:26,852 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-18 09:56:26,852 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-18 09:56:26,884 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-18 09:56:26,884 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:26,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:27,009 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-09-18 09:56:27,010 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:27,022 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-09-18 09:56:27,023 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:27,059 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:27,059 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:15 [2018-09-18 09:56:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 96 proven. 91 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-18 09:56:27,090 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:27,296 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2018-09-18 09:56:27,298 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-09-18 09:56:27,376 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 69 [2018-09-18 09:56:27,376 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-09-18 09:56:27,422 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 24 xjuncts. [2018-09-18 09:56:27,503 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-09-18 09:56:27,503 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:48 [2018-09-18 09:56:27,567 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2018-09-18 09:56:27,567 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:27,583 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:27,583 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:64, output treesize:3 [2018-09-18 09:56:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 42 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-18 09:56:27,631 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:27,631 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 09:56:27,646 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-18 09:56:27,646 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-18 09:56:27,843 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-18 09:56:27,843 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:27,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:27,868 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-09-18 09:56:27,869 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:27,892 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-09-18 09:56:27,893 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:27,896 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:27,897 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:15 [2018-09-18 09:56:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 88 proven. 115 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-18 09:56:27,930 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:27,977 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2018-09-18 09:56:27,978 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-09-18 09:56:28,034 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 69 [2018-09-18 09:56:28,035 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-09-18 09:56:28,076 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 24 xjuncts. [2018-09-18 09:56:28,371 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-09-18 09:56:28,372 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:48 [2018-09-18 09:56:28,394 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2018-09-18 09:56:28,395 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:28,443 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:28,443 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:64, output treesize:3 [2018-09-18 09:56:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 42 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-18 09:56:28,479 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 09:56:28,479 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11, 11, 11] total 21 [2018-09-18 09:56:28,479 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 09:56:28,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-18 09:56:28,481 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-18 09:56:28,481 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2018-09-18 09:56:28,481 INFO L87 Difference]: Start difference. First operand 179 states and 207 transitions. Second operand 16 states. [2018-09-18 09:56:29,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:29,437 INFO L93 Difference]: Finished difference Result 416 states and 503 transitions. [2018-09-18 09:56:29,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-18 09:56:29,439 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2018-09-18 09:56:29,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:29,445 INFO L225 Difference]: With dead ends: 416 [2018-09-18 09:56:29,445 INFO L226 Difference]: Without dead ends: 293 [2018-09-18 09:56:29,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 399 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2018-09-18 09:56:29,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-09-18 09:56:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 255. [2018-09-18 09:56:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-09-18 09:56:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 298 transitions. [2018-09-18 09:56:29,475 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 298 transitions. Word has length 104 [2018-09-18 09:56:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:29,475 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 298 transitions. [2018-09-18 09:56:29,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-18 09:56:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 298 transitions. [2018-09-18 09:56:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-18 09:56:29,477 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:29,478 INFO L376 BasicCegarLoop]: trace histogram [15, 12, 12, 11, 6, 5, 5, 4, 4, 4, 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] [2018-09-18 09:56:29,478 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:29,478 INFO L82 PathProgramCache]: Analyzing trace with hash 269085647, now seen corresponding path program 5 times [2018-09-18 09:56:29,478 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:29,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:29,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-18 09:56:29,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:29,480 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 170 proven. 32 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-09-18 09:56:29,736 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:29,736 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 09:56:29,745 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-18 09:56:29,745 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 09:56:29,811 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-09-18 09:56:29,811 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:29,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:30,092 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-09-18 09:56:30,093 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:30,102 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-09-18 09:56:30,102 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:30,108 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:30,109 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:15 [2018-09-18 09:56:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 227 proven. 96 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-09-18 09:56:30,171 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:30,370 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2018-09-18 09:56:30,372 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-09-18 09:56:30,541 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 69 [2018-09-18 09:56:30,542 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-09-18 09:56:30,568 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 24 xjuncts. [2018-09-18 09:56:30,650 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-09-18 09:56:30,650 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:48 [2018-09-18 09:56:30,711 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2018-09-18 09:56:30,711 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:30,726 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:30,727 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:64, output treesize:3 [2018-09-18 09:56:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 202 proven. 121 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-09-18 09:56:30,782 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:30,782 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 26 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 09:56:30,797 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-18 09:56:30,797 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 09:56:34,007 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-09-18 09:56:34,008 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:34,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:34,041 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-09-18 09:56:34,042 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:34,138 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-09-18 09:56:34,138 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:34,202 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:34,203 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:15 [2018-09-18 09:56:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 140 proven. 168 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-18 09:56:34,248 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:56:34,267 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2018-09-18 09:56:34,269 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-09-18 09:56:34,373 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 69 [2018-09-18 09:56:34,374 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-09-18 09:56:34,408 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 24 xjuncts. [2018-09-18 09:56:34,481 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-09-18 09:56:34,482 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:48 [2018-09-18 09:56:34,486 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2018-09-18 09:56:34,487 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:34,501 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:34,501 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:64, output treesize:3 [2018-09-18 09:56:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 51 proven. 257 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-18 09:56:34,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 09:56:34,550 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13, 13, 13] total 25 [2018-09-18 09:56:34,550 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 09:56:34,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-18 09:56:34,550 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-18 09:56:34,551 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2018-09-18 09:56:34,551 INFO L87 Difference]: Start difference. First operand 255 states and 298 transitions. Second operand 19 states. [2018-09-18 09:56:35,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 09:56:35,559 INFO L93 Difference]: Finished difference Result 579 states and 703 transitions. [2018-09-18 09:56:35,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 09:56:35,561 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 116 [2018-09-18 09:56:35,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 09:56:35,564 INFO L225 Difference]: With dead ends: 579 [2018-09-18 09:56:35,564 INFO L226 Difference]: Without dead ends: 395 [2018-09-18 09:56:35,565 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 444 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=202, Invalid=1130, Unknown=0, NotChecked=0, Total=1332 [2018-09-18 09:56:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-09-18 09:56:35,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 351. [2018-09-18 09:56:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-09-18 09:56:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 414 transitions. [2018-09-18 09:56:35,597 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 414 transitions. Word has length 116 [2018-09-18 09:56:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 09:56:35,597 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 414 transitions. [2018-09-18 09:56:35,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-18 09:56:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 414 transitions. [2018-09-18 09:56:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-18 09:56:35,599 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 09:56:35,599 INFO L376 BasicCegarLoop]: trace histogram [18, 15, 15, 14, 6, 5, 5, 4, 4, 4, 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] [2018-09-18 09:56:35,599 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 09:56:35,600 INFO L82 PathProgramCache]: Analyzing trace with hash -740367928, now seen corresponding path program 6 times [2018-09-18 09:56:35,600 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 09:56:35,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:35,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-18 09:56:35,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 09:56:35,601 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 09:56:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 09:56:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 250 proven. 50 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2018-09-18 09:56:35,795 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 09:56:35,795 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 09:56:35,804 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-18 09:56:35,804 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-09-18 09:56:35,856 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-09-18 09:56:35,856 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 09:56:35,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 09:56:35,865 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 66 [2018-09-18 09:56:35,872 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:56:35,873 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 74 [2018-09-18 09:56:35,882 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:56:35,884 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:56:35,886 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 88 [2018-09-18 09:56:35,895 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 90 [2018-09-18 09:56:35,905 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 92 [2018-09-18 09:56:35,911 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 94 [2018-09-18 09:56:35,918 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 96 [2018-09-18 09:56:35,924 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 98 [2018-09-18 09:56:35,936 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 100 [2018-09-18 09:56:35,944 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 102 [2018-09-18 09:56:35,956 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 104 [2018-09-18 09:56:35,985 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 106 [2018-09-18 09:56:36,001 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 108 [2018-09-18 09:56:36,017 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 110 [2018-09-18 09:56:36,042 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 112 [2018-09-18 09:56:36,056 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 114 [2018-09-18 09:56:36,077 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 116 [2018-09-18 09:56:36,092 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 118 [2018-09-18 09:56:36,118 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 120 [2018-09-18 09:56:36,132 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 19 select indices, 19 select index equivalence classes, 190 disjoint index pairs (out of 171 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 119 [2018-09-18 09:56:36,134 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,210 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,272 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,333 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,394 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,453 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,513 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,576 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,638 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,701 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,761 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,822 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,882 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,942 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:36,999 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:37,059 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:37,121 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:37,182 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:37,236 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:37,299 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:37,384 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 66 [2018-09-18 09:56:37,390 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 68 [2018-09-18 09:56:37,419 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 70 [2018-09-18 09:56:37,432 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 72 [2018-09-18 09:56:37,452 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 74 [2018-09-18 09:56:37,466 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2018-09-18 09:56:37,483 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 78 [2018-09-18 09:56:37,501 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 80 [2018-09-18 09:56:37,519 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 82 [2018-09-18 09:56:37,535 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 84 [2018-09-18 09:56:37,545 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 86 [2018-09-18 09:56:37,553 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 88 [2018-09-18 09:56:37,566 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 90 [2018-09-18 09:56:37,582 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 92 [2018-09-18 09:56:37,606 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 94 [2018-09-18 09:56:37,626 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 96 [2018-09-18 09:56:37,646 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 98 [2018-09-18 09:56:37,668 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 100 [2018-09-18 09:56:37,690 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 102 [2018-09-18 09:56:37,713 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 19 select indices, 19 select index equivalence classes, 190 disjoint index pairs (out of 171 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 101 [2018-09-18 09:56:37,714 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:37,779 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:37,839 INFO L267 ElimStorePlain]: Start of recursive call 39: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:37,901 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:37,959 INFO L267 ElimStorePlain]: Start of recursive call 37: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,017 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,076 INFO L267 ElimStorePlain]: Start of recursive call 35: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,133 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,190 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,253 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,319 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,385 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,439 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,494 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,550 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,610 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,668 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,729 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,795 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:38,860 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:39,047 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 66 [2018-09-18 09:56:39,053 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:56:39,054 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 74 [2018-09-18 09:56:39,060 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:56:39,062 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 82 [2018-09-18 09:56:39,072 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 84 [2018-09-18 09:56:39,082 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 86 [2018-09-18 09:56:39,106 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 88 [2018-09-18 09:56:39,122 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 90 [2018-09-18 09:56:39,141 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 92 [2018-09-18 09:56:39,158 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 94 [2018-09-18 09:56:39,179 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 96 [2018-09-18 09:56:39,200 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 98 [2018-09-18 09:56:39,215 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 100 [2018-09-18 09:56:39,225 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 102 [2018-09-18 09:56:39,235 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 104 [2018-09-18 09:56:39,262 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 106 [2018-09-18 09:56:39,286 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 108 [2018-09-18 09:56:39,310 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 110 [2018-09-18 09:56:39,335 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 112 [2018-09-18 09:56:39,350 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 114 [2018-09-18 09:56:39,366 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 19 select indices, 19 select index equivalence classes, 190 disjoint index pairs (out of 171 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 113 [2018-09-18 09:56:39,367 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:39,441 INFO L267 ElimStorePlain]: Start of recursive call 60: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:39,520 INFO L267 ElimStorePlain]: Start of recursive call 59: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:39,570 INFO L267 ElimStorePlain]: Start of recursive call 58: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:39,622 INFO L267 ElimStorePlain]: Start of recursive call 57: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:39,856 INFO L267 ElimStorePlain]: Start of recursive call 56: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:39,956 INFO L267 ElimStorePlain]: Start of recursive call 55: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,020 INFO L267 ElimStorePlain]: Start of recursive call 54: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,089 INFO L267 ElimStorePlain]: Start of recursive call 53: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,153 INFO L267 ElimStorePlain]: Start of recursive call 52: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,201 INFO L267 ElimStorePlain]: Start of recursive call 51: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,253 INFO L267 ElimStorePlain]: Start of recursive call 50: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,305 INFO L267 ElimStorePlain]: Start of recursive call 49: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,357 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,409 INFO L267 ElimStorePlain]: Start of recursive call 47: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,462 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,514 INFO L267 ElimStorePlain]: Start of recursive call 45: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,566 INFO L267 ElimStorePlain]: Start of recursive call 44: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,617 INFO L267 ElimStorePlain]: Start of recursive call 43: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,663 INFO L267 ElimStorePlain]: Start of recursive call 42: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,932 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:40,932 INFO L202 ElimStorePlain]: Needed 61 recursive calls to eliminate 3 variables, input treesize:196, output treesize:307 [2018-09-18 09:56:41,198 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2018-09-18 09:56:41,247 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 [2018-09-18 09:56:41,248 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:42,625 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:42,625 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:313, output treesize:312 [2018-09-18 09:56:42,985 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-09-18 09:56:43,292 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-09-18 09:56:43,592 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-09-18 09:56:43,600 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:56:43,601 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 16 [2018-09-18 09:56:43,601 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-18 09:56:43,892 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:56:43,893 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:320, output treesize:319 [2018-09-18 09:56:44,202 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-09-18 09:56:44,668 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2018-09-18 09:56:45,164 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-09-18 09:56:45,806 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-09-18 09:56:45,825 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:56:45,827 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:56:45,832 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:56:45,835 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:56:45,839 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:56:45,981 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 21 select indices, 21 select index equivalence classes, 195 disjoint index pairs (out of 210 index pairs), introduced 1 new quantified variables, introduced 15 case distinctions, treesize of input 116 treesize of output 154 [2018-09-18 09:56:45,982 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 15 [2018-09-18 09:56:46,384 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 32768 conjuctions. This might take some time... [2018-09-18 09:59:48,664 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 32768 conjuctions. [2018-09-18 09:59:53,821 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 16 xjuncts. [2018-09-18 09:59:54,818 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:54,825 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:54,832 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:54,857 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 23 treesize of output 71 [2018-09-18 09:59:54,860 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:54,864 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:54,871 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:54,879 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:54,903 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 123 [2018-09-18 09:59:54,908 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:54,912 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:54,918 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:54,926 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:54,954 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 125 [2018-09-18 09:59:54,958 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:54,962 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:54,970 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:54,977 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,003 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 119 [2018-09-18 09:59:55,009 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:55,050 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,135 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,141 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,142 INFO L303 Elim1Store]: Index analysis took 131 ms [2018-09-18 09:59:55,167 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 67 treesize of output 115 [2018-09-18 09:59:55,172 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:55,176 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,183 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,191 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,215 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 91 [2018-09-18 09:59:55,220 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:55,223 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,230 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,238 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,262 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 83 [2018-09-18 09:59:55,267 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:55,270 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,278 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,285 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,310 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 87 [2018-09-18 09:59:55,314 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:55,318 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,325 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,333 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,360 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 99 [2018-09-18 09:59:55,364 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:55,368 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,369 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 90 [2018-09-18 09:59:55,370 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-09-18 09:59:55,374 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,381 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,389 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,414 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 59 treesize of output 107 [2018-09-18 09:59:55,420 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:55,423 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,430 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,438 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,460 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 79 [2018-09-18 09:59:55,464 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:55,467 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,475 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,483 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,505 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 75 [2018-09-18 09:59:55,509 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:55,512 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,520 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,527 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,550 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 95 [2018-09-18 09:59:55,555 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:55,559 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,567 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,581 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,604 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 111 [2018-09-18 09:59:55,609 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:55,649 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,718 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,725 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 09:59:55,725 INFO L303 Elim1Store]: Index analysis took 115 ms [2018-09-18 09:59:55,748 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 103 [2018-09-18 09:59:55,752 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 7 xjuncts. [2018-09-18 09:59:56,655 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 09:59:56,655 INFO L202 ElimStorePlain]: Needed 18 recursive calls to eliminate 3 variables, input treesize:337, output treesize:227 [2018-09-18 09:59:56,870 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-09-18 09:59:57,247 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 108 [2018-09-18 09:59:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 48 proven. 51 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2018-09-18 09:59:57,876 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 09:59:58,744 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 32 [2018-09-18 09:59:58,892 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-09-18 09:59:58,948 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 54 [2018-09-18 09:59:58,952 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 8 xjuncts. [2018-09-18 09:59:58,966 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 28 treesize of output 22 [2018-09-18 09:59:58,967 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-09-18 09:59:58,976 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2018-09-18 09:59:58,978 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-09-18 09:59:59,004 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 59 [2018-09-18 09:59:59,007 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 8 xjuncts. [2018-09-18 09:59:59,144 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 54 [2018-09-18 09:59:59,146 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 8 xjuncts. [2018-09-18 09:59:59,173 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 61 [2018-09-18 09:59:59,176 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 8 xjuncts. [2018-09-18 09:59:59,340 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 54 [2018-09-18 09:59:59,342 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 8 xjuncts. [2018-09-18 09:59:59,474 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2018-09-18 09:59:59,475 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-09-18 09:59:59,521 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 59 [2018-09-18 09:59:59,524 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 8 xjuncts. [2018-09-18 09:59:59,538 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2018-09-18 09:59:59,538 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-09-18 09:59:59,544 INFO L682 Elim1Store]: detected equality via solver [2018-09-18 09:59:59,570 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 59 [2018-09-18 09:59:59,571 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 4 xjuncts. [2018-09-18 09:59:59,574 INFO L682 Elim1Store]: detected equality via solver [2018-09-18 09:59:59,598 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 59 [2018-09-18 09:59:59,600 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 4 xjuncts. [2018-09-18 09:59:59,614 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2018-09-18 09:59:59,615 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-09-18 09:59:59,826 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-09-18 09:59:59,868 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 9 xjuncts. [2018-09-18 09:59:59,868 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 4 variables, input treesize:50, output treesize:283 [2018-09-18 10:00:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 8 proven. 101 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-09-18 10:00:00,389 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:00:00,389 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 28 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:00:00,404 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-18 10:00:00,404 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-09-18 10:00:01,458 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-09-18 10:00:01,458 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 10:00:01,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:00:01,523 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 66 [2018-09-18 10:00:01,529 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:01,530 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 74 [2018-09-18 10:00:01,540 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:01,544 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:01,544 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 88 [2018-09-18 10:00:01,550 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 90 [2018-09-18 10:00:01,556 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 92 [2018-09-18 10:00:01,561 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 94 [2018-09-18 10:00:01,576 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 96 [2018-09-18 10:00:01,586 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 98 [2018-09-18 10:00:01,598 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 100 [2018-09-18 10:00:01,607 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 102 [2018-09-18 10:00:01,617 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 104 [2018-09-18 10:00:01,624 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 106 [2018-09-18 10:00:01,633 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 108 [2018-09-18 10:00:01,651 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 110 [2018-09-18 10:00:01,670 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 112 [2018-09-18 10:00:01,690 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 114 [2018-09-18 10:00:01,710 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 116 [2018-09-18 10:00:01,721 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 118 [2018-09-18 10:00:01,742 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 120 [2018-09-18 10:00:01,755 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 19 select indices, 19 select index equivalence classes, 190 disjoint index pairs (out of 171 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 119 [2018-09-18 10:00:01,756 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-09-18 10:00:01,880 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:01,988 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:02,106 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:02,216 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:02,334 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:02,445 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:02,561 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:02,665 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:02,769 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:02,900 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:03,006 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:03,114 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:03,219 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:03,335 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:03,443 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:03,553 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:03,666 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:03,773 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:03,885 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,039 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 66 [2018-09-18 10:00:04,043 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 68 [2018-09-18 10:00:04,050 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 70 [2018-09-18 10:00:04,057 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 72 [2018-09-18 10:00:04,064 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 74 [2018-09-18 10:00:04,070 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2018-09-18 10:00:04,079 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 78 [2018-09-18 10:00:04,085 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 80 [2018-09-18 10:00:04,102 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 82 [2018-09-18 10:00:04,108 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 84 [2018-09-18 10:00:04,117 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 86 [2018-09-18 10:00:04,123 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 88 [2018-09-18 10:00:04,150 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 90 [2018-09-18 10:00:04,156 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 92 [2018-09-18 10:00:04,166 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 94 [2018-09-18 10:00:04,172 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 96 [2018-09-18 10:00:04,199 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 98 [2018-09-18 10:00:04,215 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 100 [2018-09-18 10:00:04,223 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 102 [2018-09-18 10:00:04,233 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 19 select indices, 19 select index equivalence classes, 190 disjoint index pairs (out of 171 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 101 [2018-09-18 10:00:04,233 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,297 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,352 INFO L267 ElimStorePlain]: Start of recursive call 39: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,408 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,468 INFO L267 ElimStorePlain]: Start of recursive call 37: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,525 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,585 INFO L267 ElimStorePlain]: Start of recursive call 35: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,651 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,713 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,774 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,829 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,887 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:04,945 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,000 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,060 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,118 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,175 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,237 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,301 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,357 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,523 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 66 [2018-09-18 10:00:05,528 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:05,529 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 74 [2018-09-18 10:00:05,534 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:05,535 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 82 [2018-09-18 10:00:05,541 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 84 [2018-09-18 10:00:05,547 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 86 [2018-09-18 10:00:05,554 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 88 [2018-09-18 10:00:05,561 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 90 [2018-09-18 10:00:05,566 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 92 [2018-09-18 10:00:05,573 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 94 [2018-09-18 10:00:05,579 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 96 [2018-09-18 10:00:05,585 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 98 [2018-09-18 10:00:05,591 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 100 [2018-09-18 10:00:05,599 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 102 [2018-09-18 10:00:05,607 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 104 [2018-09-18 10:00:05,631 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 106 [2018-09-18 10:00:05,639 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 108 [2018-09-18 10:00:05,646 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 110 [2018-09-18 10:00:05,656 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 112 [2018-09-18 10:00:05,665 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 114 [2018-09-18 10:00:05,677 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 19 select indices, 19 select index equivalence classes, 190 disjoint index pairs (out of 171 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 113 [2018-09-18 10:00:05,677 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,753 INFO L267 ElimStorePlain]: Start of recursive call 60: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,808 INFO L267 ElimStorePlain]: Start of recursive call 59: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,861 INFO L267 ElimStorePlain]: Start of recursive call 58: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,913 INFO L267 ElimStorePlain]: Start of recursive call 57: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:05,966 INFO L267 ElimStorePlain]: Start of recursive call 56: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,018 INFO L267 ElimStorePlain]: Start of recursive call 55: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,074 INFO L267 ElimStorePlain]: Start of recursive call 54: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,129 INFO L267 ElimStorePlain]: Start of recursive call 53: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,178 INFO L267 ElimStorePlain]: Start of recursive call 52: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,235 INFO L267 ElimStorePlain]: Start of recursive call 51: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,288 INFO L267 ElimStorePlain]: Start of recursive call 50: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,346 INFO L267 ElimStorePlain]: Start of recursive call 49: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,401 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,458 INFO L267 ElimStorePlain]: Start of recursive call 47: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,513 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,568 INFO L267 ElimStorePlain]: Start of recursive call 45: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,620 INFO L267 ElimStorePlain]: Start of recursive call 44: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,673 INFO L267 ElimStorePlain]: Start of recursive call 43: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,729 INFO L267 ElimStorePlain]: Start of recursive call 42: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,988 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:06,989 INFO L202 ElimStorePlain]: Needed 61 recursive calls to eliminate 3 variables, input treesize:199, output treesize:310 [2018-09-18 10:00:07,355 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2018-09-18 10:00:07,373 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 [2018-09-18 10:00:07,374 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-18 10:00:07,648 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:07,648 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:316, output treesize:315 [2018-09-18 10:00:08,008 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2018-09-18 10:00:08,392 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2018-09-18 10:00:08,778 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-09-18 10:00:08,786 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:08,787 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2018-09-18 10:00:08,787 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-18 10:00:09,072 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-18 10:00:09,072 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:323, output treesize:322 [2018-09-18 10:00:09,451 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-09-18 10:00:09,896 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-09-18 10:00:10,304 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2018-09-18 10:00:10,626 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 21 select indices, 21 select index equivalence classes, 190 disjoint index pairs (out of 210 index pairs), introduced 0 new quantified variables, introduced 20 case distinctions, treesize of input 106 treesize of output 161 [2018-09-18 10:00:10,627 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 20 [2018-09-18 10:00:10,691 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 32 xjuncts. [2018-09-18 10:00:11,604 INFO L303 Elim1Store]: Index analysis took 180 ms [2018-09-18 10:00:11,716 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 21 select indices, 21 select index equivalence classes, 190 disjoint index pairs (out of 210 index pairs), introduced 0 new quantified variables, introduced 20 case distinctions, treesize of input 106 treesize of output 161 [2018-09-18 10:00:11,717 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 20 [2018-09-18 10:00:11,769 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 32 xjuncts. [2018-09-18 10:00:12,721 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 26 dim-0 vars, and 26 xjuncts. [2018-09-18 10:00:12,721 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:335, output treesize:5401 [2018-09-18 10:00:19,259 WARN L178 SmtUtils]: Spent 6.13 s on a formula simplification. DAG size of input: 408 DAG size of output: 287 [2018-09-18 10:00:19,381 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 21 select indices, 21 select index equivalence classes, 209 disjoint index pairs (out of 210 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 118 [2018-09-18 10:00:19,383 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-09-18 10:00:22,686 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:22,687 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 105 treesize of output 99 [2018-09-18 10:00:22,688 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-18 10:00:22,691 INFO L682 Elim1Store]: detected equality via solver [2018-09-18 10:00:22,692 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:22,693 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:22,694 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:22,694 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 115 [2018-09-18 10:00:22,695 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-09-18 10:00:25,678 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 21 select indices, 21 select index equivalence classes, 208 disjoint index pairs (out of 210 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 208 treesize of output 122 [2018-09-18 10:00:25,681 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 3 xjuncts. [2018-09-18 10:00:28,635 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 21 select indices, 21 select index equivalence classes, 209 disjoint index pairs (out of 210 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 118 [2018-09-18 10:00:28,636 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-09-18 10:00:31,548 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:31,549 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 105 treesize of output 99 [2018-09-18 10:00:31,550 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-09-18 10:00:31,553 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:31,554 INFO L682 Elim1Store]: detected equality via solver [2018-09-18 10:00:31,555 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:31,555 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:31,556 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 117 [2018-09-18 10:00:31,557 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-09-18 10:00:34,386 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 21 select indices, 21 select index equivalence classes, 209 disjoint index pairs (out of 210 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 118 [2018-09-18 10:00:34,388 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-09-18 10:00:37,110 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:37,112 INFO L682 Elim1Store]: detected equality via solver [2018-09-18 10:00:37,113 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:37,117 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 217 [2018-09-18 10:00:37,118 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-09-18 10:00:39,879 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:39,880 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 105 treesize of output 99 [2018-09-18 10:00:39,880 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-09-18 10:00:39,907 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:39,921 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:39,944 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:39,952 INFO L682 Elim1Store]: detected equality via solver [2018-09-18 10:00:39,974 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:39,975 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 121 [2018-09-18 10:00:39,976 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-09-18 10:00:42,589 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,590 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,592 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,593 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,594 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,596 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,597 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,598 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,600 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,601 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,602 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,603 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,605 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,606 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,607 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,609 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,610 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,611 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,613 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,614 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,616 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,617 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,618 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,620 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,621 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,622 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,624 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,625 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,626 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,628 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,629 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,631 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,632 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,633 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,635 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,636 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,637 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,639 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,640 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,641 INFO L700 Elim1Store]: detected not equals via solver [2018-09-18 10:00:42,643 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 21 select indices, 21 select index equivalence classes, 230 disjoint index pairs (out of 210 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 194 [2018-09-18 10:00:42,644 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. Received shutdown request... [2018-09-18 10:00:42,905 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 10:00:43,106 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:00:43,106 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 10:00:43,112 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 10:00:43,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:00:43 BoogieIcfgContainer [2018-09-18 10:00:43,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:00:43,113 INFO L168 Benchmark]: Toolchain (without parser) took 270314.99 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -945.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-18 10:00:43,114 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-18 10:00:43,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 10:00:43,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.80 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. [2018-09-18 10:00:43,114 INFO L168 Benchmark]: Boogie Preprocessor took 38.31 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. [2018-09-18 10:00:43,114 INFO L168 Benchmark]: RCFGBuilder took 755.61 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -735.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-09-18 10:00:43,115 INFO L168 Benchmark]: TraceAbstraction took 269146.87 ms. Allocated memory was 2.2 GB in the beginning and 3.0 GB in the end (delta: 742.9 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -219.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-18 10:00:43,117 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 28.80 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 38.31 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 755.61 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -735.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 269146.87 ms. Allocated memory was 2.2 GB in the beginning and 3.0 GB in the end (delta: 742.9 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -219.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 5]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 5). Cancelled while BasicCegarLoop was analyzing trace of length 129 with TraceHistMax 18, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 644. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. TIMEOUT Result, 269.0s OverallTime, 16 OverallIterations, 18 TraceHistogramMax, 5.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 508 SDtfs, 1070 SDslu, 1517 SDs, 0 SdLazy, 1466 SolverSat, 262 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3111 GetRequests, 2854 SyntacticMatches, 26 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=351occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 231 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 5.1s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 2302 NumberOfCodeBlocks, 2192 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 3726 ConstructedInterpolants, 0 QuantifiedInterpolants, 1026414 SizeOfPredicates, 97 NumberOfNonLiveVariables, 2828 ConjunctsInSsa, 201 ConjunctsInUnsatCore, 65 InterpolantComputations, 10 PerfectInterpolantSequences, 3910/5646 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/eureka_01_true-unreach-call.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-00-43-125.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/eureka_01_true-unreach-call.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-00-43-125.csv Completed graceful shutdown