java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-tiling/nr5_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:25:15,977 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:25:15,981 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:25:15,999 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:25:15,999 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:25:16,000 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:25:16,002 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:25:16,004 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:25:16,007 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:25:16,014 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:25:16,015 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:25:16,015 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:25:16,021 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:25:16,022 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:25:16,023 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:25:16,026 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:25:16,027 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:25:16,032 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:25:16,036 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:25:16,039 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:25:16,040 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:25:16,041 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:25:16,043 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:25:16,044 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:25:16,044 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:25:16,045 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:25:16,045 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:25:16,046 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:25:16,046 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:25:16,047 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:25:16,048 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:25:16,049 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:25:16,050 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:25:16,050 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:25:16,051 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:25:16,051 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:25:16,051 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:25:16,052 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:25:16,052 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:25:16,053 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:25:16,074 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:25:16,075 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:25:16,076 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:25:16,076 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:25:16,076 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:25:16,077 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:25:16,077 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:25:16,077 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:25:16,077 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:25:16,078 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:25:16,078 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:25:16,078 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:25:16,078 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:25:16,078 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:25:16,079 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:25:16,079 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:25:16,079 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:25:16,079 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:25:16,079 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:25:16,080 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:25:16,080 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:25:16,080 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:25:16,080 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:25:16,081 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:25:16,081 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:25:16,081 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:25:16,081 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:25:16,081 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:25:16,082 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:25:16,142 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:25:16,156 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:25:16,162 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:25:16,164 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:25:16,164 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:25:16,165 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/nr5_true-unreach-call.i [2019-05-23 11:25:16,226 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe11cb54/114c50e3b94444179aa32031b9842c23/FLAG43f901755 [2019-05-23 11:25:16,668 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:25:16,669 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/nr5_true-unreach-call.i [2019-05-23 11:25:16,673 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe11cb54/114c50e3b94444179aa32031b9842c23/FLAG43f901755 [2019-05-23 11:25:17,057 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe11cb54/114c50e3b94444179aa32031b9842c23 [2019-05-23 11:25:17,066 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:25:17,067 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:25:17,068 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:17,068 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:25:17,072 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:25:17,073 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:17" (1/1) ... [2019-05-23 11:25:17,076 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3233818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17, skipping insertion in model container [2019-05-23 11:25:17,076 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:17" (1/1) ... [2019-05-23 11:25:17,084 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:25:17,106 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:25:17,298 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:17,308 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:25:17,349 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:17,384 INFO L146 ILogger]: Completed translation [2019-05-23 11:25:17,385 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17 WrapperNode [2019-05-23 11:25:17,385 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:17,386 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:17,386 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:25:17,386 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:25:17,398 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17" (1/1) ... [2019-05-23 11:25:17,416 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17" (1/1) ... [2019-05-23 11:25:17,449 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:17,451 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:25:17,451 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:25:17,451 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:25:17,462 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17" (1/1) ... [2019-05-23 11:25:17,463 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17" (1/1) ... [2019-05-23 11:25:17,579 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17" (1/1) ... [2019-05-23 11:25:17,579 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17" (1/1) ... [2019-05-23 11:25:17,586 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17" (1/1) ... [2019-05-23 11:25:17,591 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17" (1/1) ... [2019-05-23 11:25:17,593 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17" (1/1) ... [2019-05-23 11:25:17,595 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:25:17,595 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:25:17,595 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:25:17,596 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:25:17,596 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17" (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:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:25:17,660 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:25:17,661 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:25:17,661 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:25:17,661 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:25:17,661 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:25:17,661 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:25:18,192 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:25:18,192 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:25:18,194 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:18 BoogieIcfgContainer [2019-05-23 11:25:18,194 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:25:18,195 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:25:18,195 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:25:18,198 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:25:18,198 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:25:17" (1/3) ... [2019-05-23 11:25:18,199 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3047c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:18, skipping insertion in model container [2019-05-23 11:25:18,199 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:17" (2/3) ... [2019-05-23 11:25:18,199 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3047c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:18, skipping insertion in model container [2019-05-23 11:25:18,200 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:18" (3/3) ... [2019-05-23 11:25:18,201 INFO L146 ILogger]: Analyzing ICFG nr5_true-unreach-call.i [2019-05-23 11:25:18,211 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:25:18,219 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:25:18,236 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:25:18,268 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:25:18,269 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:25:18,269 INFO L146 ILogger]: Hoare is true [2019-05-23 11:25:18,269 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:25:18,269 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:25:18,270 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:25:18,270 INFO L146 ILogger]: Difference is false [2019-05-23 11:25:18,270 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:25:18,270 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:25:18,286 INFO L146 ILogger]: Start isEmpty. Operand 57 states. [2019-05-23 11:25:18,293 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 29 [2019-05-23 11:25:18,293 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:18,294 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:18,297 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:18,302 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:18,303 INFO L146 ILogger]: Analyzing trace with hash 407920706, now seen corresponding path program 1 times [2019-05-23 11:25:18,304 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:18,305 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:18,346 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:18,346 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:18,346 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:18,404 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:18,527 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:18,530 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:18,531 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:25:18,535 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:18,548 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:18,549 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:18,551 INFO L146 ILogger]: Start difference. First operand 57 states. Second operand 5 states. [2019-05-23 11:25:18,967 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:18,967 INFO L146 ILogger]: Finished difference Result 134 states and 157 transitions. [2019-05-23 11:25:18,968 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:25:18,969 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 28 [2019-05-23 11:25:18,970 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:18,981 INFO L146 ILogger]: With dead ends: 134 [2019-05-23 11:25:18,981 INFO L146 ILogger]: Without dead ends: 76 [2019-05-23 11:25:18,985 INFO L146 ILogger]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:25:19,004 INFO L146 ILogger]: Start minimizeSevpa. Operand 76 states. [2019-05-23 11:25:19,027 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 76 to 52. [2019-05-23 11:25:19,030 INFO L146 ILogger]: Start removeUnreachable. Operand 52 states. [2019-05-23 11:25:19,031 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2019-05-23 11:25:19,034 INFO L146 ILogger]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 28 [2019-05-23 11:25:19,034 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:19,034 INFO L146 ILogger]: Abstraction has 52 states and 56 transitions. [2019-05-23 11:25:19,035 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:19,035 INFO L146 ILogger]: Start isEmpty. Operand 52 states and 56 transitions. [2019-05-23 11:25:19,037 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:25:19,037 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:19,038 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:19,038 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:19,038 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:19,039 INFO L146 ILogger]: Analyzing trace with hash 1905028511, now seen corresponding path program 1 times [2019-05-23 11:25:19,039 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:19,040 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:19,044 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:19,044 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:19,044 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:19,075 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:19,319 WARN L146 ILogger]: Spent 112.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 8 [2019-05-23 11:25:19,475 WARN L146 ILogger]: Spent 136.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 12 [2019-05-23 11:25:19,484 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:19,485 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:19,485 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:25:19,486 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:19,487 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:19,487 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:19,488 INFO L146 ILogger]: Start difference. First operand 52 states and 56 transitions. Second operand 5 states. [2019-05-23 11:25:19,655 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:19,655 INFO L146 ILogger]: Finished difference Result 86 states and 94 transitions. [2019-05-23 11:25:19,655 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:25:19,656 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 30 [2019-05-23 11:25:19,656 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:19,658 INFO L146 ILogger]: With dead ends: 86 [2019-05-23 11:25:19,658 INFO L146 ILogger]: Without dead ends: 63 [2019-05-23 11:25:19,660 INFO L146 ILogger]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:19,661 INFO L146 ILogger]: Start minimizeSevpa. Operand 63 states. [2019-05-23 11:25:19,666 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 63 to 53. [2019-05-23 11:25:19,667 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:25:19,668 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2019-05-23 11:25:19,668 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 30 [2019-05-23 11:25:19,668 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:19,669 INFO L146 ILogger]: Abstraction has 53 states and 57 transitions. [2019-05-23 11:25:19,669 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:19,669 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 57 transitions. [2019-05-23 11:25:19,670 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:25:19,670 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:19,671 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:19,671 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:19,671 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:19,672 INFO L146 ILogger]: Analyzing trace with hash -1511798676, now seen corresponding path program 1 times [2019-05-23 11:25:19,672 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:19,672 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:19,673 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:19,673 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:19,674 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:19,688 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:19,774 INFO L146 ILogger]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:19,775 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:19,775 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:25:19,775 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:25:19,776 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:25:19,776 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:25:19,776 INFO L146 ILogger]: Start difference. First operand 53 states and 57 transitions. Second operand 3 states. [2019-05-23 11:25:19,856 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:19,856 INFO L146 ILogger]: Finished difference Result 94 states and 104 transitions. [2019-05-23 11:25:19,857 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:25:19,857 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 36 [2019-05-23 11:25:19,858 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:19,858 INFO L146 ILogger]: With dead ends: 94 [2019-05-23 11:25:19,859 INFO L146 ILogger]: Without dead ends: 59 [2019-05-23 11:25:19,859 INFO L146 ILogger]: 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 [2019-05-23 11:25:19,860 INFO L146 ILogger]: Start minimizeSevpa. Operand 59 states. [2019-05-23 11:25:19,865 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 59 to 54. [2019-05-23 11:25:19,865 INFO L146 ILogger]: Start removeUnreachable. Operand 54 states. [2019-05-23 11:25:19,866 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2019-05-23 11:25:19,867 INFO L146 ILogger]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 36 [2019-05-23 11:25:19,867 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:19,867 INFO L146 ILogger]: Abstraction has 54 states and 58 transitions. [2019-05-23 11:25:19,867 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:25:19,868 INFO L146 ILogger]: Start isEmpty. Operand 54 states and 58 transitions. [2019-05-23 11:25:19,869 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:25:19,869 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:19,869 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:19,870 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:19,870 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:19,870 INFO L146 ILogger]: Analyzing trace with hash 1340501379, now seen corresponding path program 1 times [2019-05-23 11:25:19,870 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:19,871 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:19,872 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:19,872 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:19,872 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:19,885 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:19,947 INFO L146 ILogger]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:19,948 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:19,948 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:25:19,949 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:25:19,949 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:25:19,949 INFO L146 ILogger]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:25:19,949 INFO L146 ILogger]: Start difference. First operand 54 states and 58 transitions. Second operand 4 states. [2019-05-23 11:25:20,044 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:20,044 INFO L146 ILogger]: Finished difference Result 94 states and 103 transitions. [2019-05-23 11:25:20,047 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:25:20,048 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 42 [2019-05-23 11:25:20,048 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:20,049 INFO L146 ILogger]: With dead ends: 94 [2019-05-23 11:25:20,049 INFO L146 ILogger]: Without dead ends: 58 [2019-05-23 11:25:20,049 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:20,050 INFO L146 ILogger]: Start minimizeSevpa. Operand 58 states. [2019-05-23 11:25:20,055 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 58 to 55. [2019-05-23 11:25:20,055 INFO L146 ILogger]: Start removeUnreachable. Operand 55 states. [2019-05-23 11:25:20,056 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2019-05-23 11:25:20,056 INFO L146 ILogger]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 42 [2019-05-23 11:25:20,056 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:20,057 INFO L146 ILogger]: Abstraction has 55 states and 59 transitions. [2019-05-23 11:25:20,057 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:25:20,057 INFO L146 ILogger]: Start isEmpty. Operand 55 states and 59 transitions. [2019-05-23 11:25:20,058 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:25:20,058 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:20,059 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:20,059 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:20,059 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:20,059 INFO L146 ILogger]: Analyzing trace with hash -1769317085, now seen corresponding path program 1 times [2019-05-23 11:25:20,060 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:20,060 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:20,061 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:20,061 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:20,061 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:20,077 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:20,148 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:20,149 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:20,149 INFO L146 ILogger]: Switched to mode Z3_FP 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 [2019-05-23 11:25:20,168 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:20,199 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:20,201 INFO L146 ILogger]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:25:20,208 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:20,232 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:20,264 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:20,264 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-05-23 11:25:20,265 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:20,265 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:20,266 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:20,266 INFO L146 ILogger]: Start difference. First operand 55 states and 59 transitions. Second operand 5 states. [2019-05-23 11:25:20,590 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:20,591 INFO L146 ILogger]: Finished difference Result 102 states and 112 transitions. [2019-05-23 11:25:20,592 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:25:20,592 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 42 [2019-05-23 11:25:20,592 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:20,593 INFO L146 ILogger]: With dead ends: 102 [2019-05-23 11:25:20,593 INFO L146 ILogger]: Without dead ends: 65 [2019-05-23 11:25:20,594 INFO L146 ILogger]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:25:20,594 INFO L146 ILogger]: Start minimizeSevpa. Operand 65 states. [2019-05-23 11:25:20,606 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 65 to 60. [2019-05-23 11:25:20,606 INFO L146 ILogger]: Start removeUnreachable. Operand 60 states. [2019-05-23 11:25:20,607 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2019-05-23 11:25:20,607 INFO L146 ILogger]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 42 [2019-05-23 11:25:20,607 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:20,607 INFO L146 ILogger]: Abstraction has 60 states and 64 transitions. [2019-05-23 11:25:20,608 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:20,608 INFO L146 ILogger]: Start isEmpty. Operand 60 states and 64 transitions. [2019-05-23 11:25:20,609 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 49 [2019-05-23 11:25:20,609 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:20,609 INFO L146 ILogger]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:20,613 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:20,614 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:20,614 INFO L146 ILogger]: Analyzing trace with hash -1763549958, now seen corresponding path program 1 times [2019-05-23 11:25:20,614 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:20,614 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:20,615 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:20,615 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:20,615 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:20,662 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:20,898 INFO L146 ILogger]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:20,898 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:20,898 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:20,907 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:20,946 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:20,947 INFO L146 ILogger]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:25:20,949 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:21,131 INFO L146 ILogger]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:21,159 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:21,159 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:25:21,160 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:25:21,160 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:25:21,160 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:25:21,161 INFO L146 ILogger]: Start difference. First operand 60 states and 64 transitions. Second operand 9 states. [2019-05-23 11:25:21,337 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:21,338 INFO L146 ILogger]: Finished difference Result 106 states and 115 transitions. [2019-05-23 11:25:21,339 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:25:21,339 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 48 [2019-05-23 11:25:21,340 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:21,340 INFO L146 ILogger]: With dead ends: 106 [2019-05-23 11:25:21,340 INFO L146 ILogger]: Without dead ends: 64 [2019-05-23 11:25:21,342 INFO L146 ILogger]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:25:21,342 INFO L146 ILogger]: Start minimizeSevpa. Operand 64 states. [2019-05-23 11:25:21,347 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 64 to 61. [2019-05-23 11:25:21,348 INFO L146 ILogger]: Start removeUnreachable. Operand 61 states. [2019-05-23 11:25:21,348 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2019-05-23 11:25:21,349 INFO L146 ILogger]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 48 [2019-05-23 11:25:21,349 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:21,349 INFO L146 ILogger]: Abstraction has 61 states and 65 transitions. [2019-05-23 11:25:21,349 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:25:21,349 INFO L146 ILogger]: Start isEmpty. Operand 61 states and 65 transitions. [2019-05-23 11:25:21,350 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 49 [2019-05-23 11:25:21,350 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:21,350 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:21,351 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:21,351 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:21,351 INFO L146 ILogger]: Analyzing trace with hash -578401126, now seen corresponding path program 2 times [2019-05-23 11:25:21,351 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:21,352 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:21,352 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:21,353 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:21,353 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:21,366 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:21,471 INFO L146 ILogger]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:25:21,472 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:21,472 INFO L146 ILogger]: Switched to mode Z3_FP 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 [2019-05-23 11:25:21,481 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:21,497 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:21,498 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:21,498 INFO L146 ILogger]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:25:21,501 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:21,566 INFO L146 ILogger]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:21,584 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:21,584 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2019-05-23 11:25:21,585 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:25:21,585 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:25:21,586 INFO L146 ILogger]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:25:21,586 INFO L146 ILogger]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2019-05-23 11:25:21,988 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:21,988 INFO L146 ILogger]: Finished difference Result 118 states and 129 transitions. [2019-05-23 11:25:21,989 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:25:21,990 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 48 [2019-05-23 11:25:21,990 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:21,991 INFO L146 ILogger]: With dead ends: 118 [2019-05-23 11:25:21,991 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:25:21,992 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:25:21,992 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:25:22,006 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 72. [2019-05-23 11:25:22,006 INFO L146 ILogger]: Start removeUnreachable. Operand 72 states. [2019-05-23 11:25:22,007 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2019-05-23 11:25:22,007 INFO L146 ILogger]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 48 [2019-05-23 11:25:22,007 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:22,008 INFO L146 ILogger]: Abstraction has 72 states and 77 transitions. [2019-05-23 11:25:22,008 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:25:22,008 INFO L146 ILogger]: Start isEmpty. Operand 72 states and 77 transitions. [2019-05-23 11:25:22,010 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 61 [2019-05-23 11:25:22,011 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:22,011 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:22,011 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:22,012 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:22,012 INFO L146 ILogger]: Analyzing trace with hash 1422939272, now seen corresponding path program 2 times [2019-05-23 11:25:22,012 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:22,013 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:22,013 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:22,014 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:22,014 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:22,045 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:22,226 INFO L146 ILogger]: Checked inductivity of 37 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-05-23 11:25:22,226 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:22,227 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:22,235 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:22,277 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:22,277 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:22,278 INFO L146 ILogger]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:25:22,281 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:22,494 INFO L146 ILogger]: Checked inductivity of 37 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:25:22,512 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:22,512 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2019-05-23 11:25:22,512 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:25:22,512 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:25:22,514 INFO L146 ILogger]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:25:22,514 INFO L146 ILogger]: Start difference. First operand 72 states and 77 transitions. Second operand 11 states. [2019-05-23 11:25:23,002 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:23,003 INFO L146 ILogger]: Finished difference Result 129 states and 139 transitions. [2019-05-23 11:25:23,003 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:25:23,003 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 60 [2019-05-23 11:25:23,004 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:23,005 INFO L146 ILogger]: With dead ends: 129 [2019-05-23 11:25:23,005 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:25:23,006 INFO L146 ILogger]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:25:23,006 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:25:23,011 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 71. [2019-05-23 11:25:23,011 INFO L146 ILogger]: Start removeUnreachable. Operand 71 states. [2019-05-23 11:25:23,012 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2019-05-23 11:25:23,012 INFO L146 ILogger]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 60 [2019-05-23 11:25:23,012 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:23,012 INFO L146 ILogger]: Abstraction has 71 states and 74 transitions. [2019-05-23 11:25:23,012 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:25:23,012 INFO L146 ILogger]: Start isEmpty. Operand 71 states and 74 transitions. [2019-05-23 11:25:23,013 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 61 [2019-05-23 11:25:23,014 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:23,014 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:23,014 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:23,014 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:23,014 INFO L146 ILogger]: Analyzing trace with hash -697693144, now seen corresponding path program 3 times [2019-05-23 11:25:23,015 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:23,015 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:23,016 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:23,016 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:23,016 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:23,030 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:23,147 INFO L146 ILogger]: Checked inductivity of 38 backedges. 1 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:23,147 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:23,147 INFO L146 ILogger]: Switched to mode Z3_FP 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 [2019-05-23 11:25:23,157 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:25:23,250 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:25:23,251 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:23,252 INFO L146 ILogger]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:25:23,254 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:23,263 INFO L146 ILogger]: Checked inductivity of 38 backedges. 1 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:23,303 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:23,303 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-05-23 11:25:23,304 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:25:23,304 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:25:23,305 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:25:23,305 INFO L146 ILogger]: Start difference. First operand 71 states and 74 transitions. Second operand 11 states. [2019-05-23 11:25:23,608 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:23,608 INFO L146 ILogger]: Finished difference Result 140 states and 147 transitions. [2019-05-23 11:25:23,614 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:25:23,614 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 60 [2019-05-23 11:25:23,614 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:23,615 INFO L146 ILogger]: With dead ends: 140 [2019-05-23 11:25:23,615 INFO L146 ILogger]: Without dead ends: 82 [2019-05-23 11:25:23,616 INFO L146 ILogger]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:25:23,616 INFO L146 ILogger]: Start minimizeSevpa. Operand 82 states. [2019-05-23 11:25:23,623 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 82 to 77. [2019-05-23 11:25:23,626 INFO L146 ILogger]: Start removeUnreachable. Operand 77 states. [2019-05-23 11:25:23,626 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2019-05-23 11:25:23,627 INFO L146 ILogger]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 60 [2019-05-23 11:25:23,627 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:23,627 INFO L146 ILogger]: Abstraction has 77 states and 80 transitions. [2019-05-23 11:25:23,627 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:25:23,627 INFO L146 ILogger]: Start isEmpty. Operand 77 states and 80 transitions. [2019-05-23 11:25:23,628 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:25:23,628 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:23,628 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:23,630 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:23,630 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:23,631 INFO L146 ILogger]: Analyzing trace with hash 538684383, now seen corresponding path program 4 times [2019-05-23 11:25:23,631 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:23,631 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:23,632 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:23,632 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:23,632 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:23,690 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:24,177 WARN L146 ILogger]: Spent 125.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2019-05-23 11:25:24,851 INFO L146 ILogger]: Checked inductivity of 62 backedges. 1 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:24,852 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:24,852 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:24,864 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:25:24,893 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:25:24,894 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:24,895 INFO L146 ILogger]: Trace formula consists of 104 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:25:24,898 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:24,984 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 14 [2019-05-23 11:25:24,985 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:25,001 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:25,001 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:25,002 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:35 [2019-05-23 11:25:25,239 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:25,240 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2019-05-23 11:25:25,241 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:25,295 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:25,297 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:25,297 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:58, output treesize:54 [2019-05-23 11:25:25,533 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:25,535 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:25,537 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:25,538 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:25,538 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 49 [2019-05-23 11:25:25,539 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:25,565 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:25,567 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:25,567 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:77, output treesize:73 [2019-05-23 11:25:26,057 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,059 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,061 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,064 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,066 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,068 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,070 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:26,070 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 66 [2019-05-23 11:25:26,071 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:26,099 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:26,101 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:26,101 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:96, output treesize:92 [2019-05-23 11:25:26,424 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,425 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,426 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,428 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,430 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,431 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,432 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,432 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,434 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,435 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,436 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:26,437 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 73 [2019-05-23 11:25:26,437 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:26,464 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:26,466 INFO L146 ILogger]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:26,467 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 6 variables, input treesize:100, output treesize:96 [2019-05-23 11:25:26,809 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,811 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,814 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,816 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,817 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,819 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,820 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,821 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,822 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,823 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:26,824 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:26,825 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 19 [2019-05-23 11:25:26,826 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:26,835 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:26,837 INFO L146 ILogger]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:26,837 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 6 variables, input treesize:80, output treesize:7 [2019-05-23 11:25:26,966 INFO L146 ILogger]: Checked inductivity of 62 backedges. 30 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:26,999 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:26,999 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 36 [2019-05-23 11:25:27,000 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:25:27,000 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:25:27,002 INFO L146 ILogger]: CoverageRelationStatistics Valid=301, Invalid=959, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:25:27,002 INFO L146 ILogger]: Start difference. First operand 77 states and 80 transitions. Second operand 36 states. [2019-05-23 11:25:37,655 WARN L146 ILogger]: Spent 322.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2019-05-23 11:25:45,687 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:45,687 INFO L146 ILogger]: Finished difference Result 180 states and 188 transitions. [2019-05-23 11:25:45,688 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:25:45,688 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 66 [2019-05-23 11:25:45,688 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:45,689 INFO L146 ILogger]: With dead ends: 180 [2019-05-23 11:25:45,689 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:25:45,691 INFO L146 ILogger]: 0 DeclaredPredicates, 106 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:25:45,691 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:25:45,699 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 118. [2019-05-23 11:25:45,699 INFO L146 ILogger]: Start removeUnreachable. Operand 118 states. [2019-05-23 11:25:45,699 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2019-05-23 11:25:45,700 INFO L146 ILogger]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 66 [2019-05-23 11:25:45,700 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:45,700 INFO L146 ILogger]: Abstraction has 118 states and 123 transitions. [2019-05-23 11:25:45,700 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:25:45,700 INFO L146 ILogger]: Start isEmpty. Operand 118 states and 123 transitions. [2019-05-23 11:25:45,701 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 81 [2019-05-23 11:25:45,701 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:45,702 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:45,702 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:45,702 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:45,702 INFO L146 ILogger]: Analyzing trace with hash 1052278958, now seen corresponding path program 1 times [2019-05-23 11:25:45,703 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:45,703 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:45,703 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:45,704 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:45,704 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:45,722 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:46,670 INFO L146 ILogger]: Checked inductivity of 70 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:46,671 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:46,671 INFO L146 ILogger]: Switched to mode Z3_FP 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 [2019-05-23 11:25:46,682 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:46,702 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:46,703 INFO L146 ILogger]: Trace formula consists of 123 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:25:46,707 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:46,894 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 14 [2019-05-23 11:25:46,895 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:46,908 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:46,908 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:46,909 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:35 [2019-05-23 11:25:47,010 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:47,011 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2019-05-23 11:25:47,012 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:47,028 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:47,029 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:47,029 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:58, output treesize:54 [2019-05-23 11:25:47,168 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:47,169 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:47,170 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:47,171 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:47,172 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 49 [2019-05-23 11:25:47,172 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:47,190 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:47,192 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:47,192 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:73 [2019-05-23 11:25:47,281 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:47,282 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:47,284 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:47,331 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:47,332 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 181 [2019-05-23 11:25:47,333 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:47,420 INFO L146 ILogger]: treesize reduction 81, result has 58.9 percent of original size [2019-05-23 11:25:47,427 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:47,427 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:78, output treesize:116 [2019-05-23 11:25:54,921 WARN L146 ILogger]: Spent 5.37 s on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-05-23 11:25:57,991 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-05-23 11:25:58,338 WARN L146 ILogger]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-05-23 11:26:12,651 WARN L146 ILogger]: Spent 14.12 s on a formula simplification that was a NOOP. DAG size: 129 [2019-05-23 11:26:13,408 WARN L146 ILogger]: Spent 258.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 117 [2019-05-23 11:26:13,480 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:13,481 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:13,507 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:13,519 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:13,520 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2019-05-23 11:26:13,520 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:13,524 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:13,525 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:13,525 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:45, output treesize:3 [2019-05-23 11:26:13,952 INFO L146 ILogger]: Checked inductivity of 70 backedges. 5 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:13,970 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:13,970 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26] total 40 [2019-05-23 11:26:13,971 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:26:13,971 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:26:13,972 INFO L146 ILogger]: CoverageRelationStatistics Valid=222, Invalid=1338, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:26:13,972 INFO L146 ILogger]: Start difference. First operand 118 states and 123 transitions. Second operand 40 states. [2019-05-23 11:26:15,900 WARN L146 ILogger]: Spent 211.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2019-05-23 11:26:19,396 WARN L146 ILogger]: Spent 3.14 s on a formula simplification. DAG size of input: 146 DAG size of output: 124 [2019-05-23 11:26:26,440 WARN L146 ILogger]: Spent 6.63 s on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2019-05-23 11:26:27,018 WARN L146 ILogger]: Spent 268.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 71 [2019-05-23 11:26:27,495 WARN L146 ILogger]: Spent 317.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2019-05-23 11:26:27,980 WARN L146 ILogger]: Spent 258.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2019-05-23 11:26:28,386 WARN L146 ILogger]: Spent 224.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2019-05-23 11:26:29,225 WARN L146 ILogger]: Spent 337.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 134