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/nr3_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:25:06,461 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:25:06,463 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:25:06,475 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:25:06,475 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:25:06,477 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:25:06,478 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:25:06,482 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:25:06,484 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:25:06,485 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:25:06,495 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:25:06,496 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:25:06,497 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:25:06,498 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:25:06,499 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:25:06,499 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:25:06,502 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:25:06,506 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:25:06,510 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:25:06,511 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:25:06,512 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:25:06,517 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:25:06,520 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:25:06,520 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:25:06,521 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:25:06,522 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:25:06,522 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:25:06,524 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:25:06,524 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:25:06,525 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:25:06,528 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:25:06,529 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:25:06,530 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:25:06,530 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:25:06,532 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:25:06,532 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:25:06,532 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:25:06,535 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:25:06,536 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:25:06,537 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:25:06,558 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:25:06,558 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:25:06,561 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:25:06,562 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:25:06,562 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:25:06,562 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:25:06,562 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:25:06,562 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:25:06,563 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:25:06,563 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:25:06,563 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:25:06,563 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:25:06,563 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:25:06,564 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:25:06,565 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:25:06,565 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:25:06,565 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:25:06,565 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:25:06,566 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:25:06,566 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:25:06,566 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:25:06,566 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:25:06,567 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:25:06,567 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:25:06,567 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:25:06,567 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:25:06,567 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:25:06,568 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:25:06,568 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 11:25:06,619 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:25:06,634 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:25:06,639 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:25:06,640 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:25:06,641 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:25:06,641 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/nr3_true-unreach-call.i [2019-05-23 11:25:06,696 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24c6ffca5/3f0a18a7b1634dec99849409b938d433/FLAG0b301db1e [2019-05-23 11:25:07,117 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:25:07,118 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/nr3_true-unreach-call.i [2019-05-23 11:25:07,125 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24c6ffca5/3f0a18a7b1634dec99849409b938d433/FLAG0b301db1e [2019-05-23 11:25:07,488 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24c6ffca5/3f0a18a7b1634dec99849409b938d433 [2019-05-23 11:25:07,498 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:25:07,499 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:25:07,500 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:07,500 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:25:07,505 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:25:07,506 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:07,508 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45bc2552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07, skipping insertion in model container [2019-05-23 11:25:07,509 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:07,516 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:25:07,536 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:25:07,770 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:07,779 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:25:07,812 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:07,838 INFO L146 ILogger]: Completed translation [2019-05-23 11:25:07,839 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07 WrapperNode [2019-05-23 11:25:07,839 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:07,840 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:07,841 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:25:07,841 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:25:07,850 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:07,864 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:07,891 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:07,892 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:25:07,892 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:25:07,892 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:25:07,903 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:07,903 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:07,905 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:07,906 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:08,009 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:08,014 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:08,019 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:08,021 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:25:08,022 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:25:08,022 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:25:08,022 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:25:08,023 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07" (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 11:25:08,081 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:25:08,082 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:25:08,082 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:25:08,082 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:25:08,082 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:25:08,082 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:25:08,558 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:25:08,558 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:25:08,559 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:08 BoogieIcfgContainer [2019-05-23 11:25:08,559 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:25:08,560 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:25:08,560 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:25:08,563 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:25:08,563 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:25:07" (1/3) ... [2019-05-23 11:25:08,564 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e53b46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:08, skipping insertion in model container [2019-05-23 11:25:08,564 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07" (2/3) ... [2019-05-23 11:25:08,565 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e53b46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:08, skipping insertion in model container [2019-05-23 11:25:08,565 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:08" (3/3) ... [2019-05-23 11:25:08,566 INFO L146 ILogger]: Analyzing ICFG nr3_true-unreach-call.i [2019-05-23 11:25:08,574 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:25:08,581 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:25:08,599 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:25:08,627 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:25:08,628 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:25:08,628 INFO L146 ILogger]: Hoare is true [2019-05-23 11:25:08,628 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:25:08,628 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:25:08,628 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:25:08,629 INFO L146 ILogger]: Difference is false [2019-05-23 11:25:08,629 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:25:08,629 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:25:08,643 INFO L146 ILogger]: Start isEmpty. Operand 56 states. [2019-05-23 11:25:08,649 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:25:08,650 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:08,651 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] [2019-05-23 11:25:08,653 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:08,657 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:08,657 INFO L146 ILogger]: Analyzing trace with hash -864495202, now seen corresponding path program 1 times [2019-05-23 11:25:08,659 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:08,659 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:08,710 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:08,710 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:08,710 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:08,761 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:08,804 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 11:25:08,807 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:08,807 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:25:08,810 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:25:08,823 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:25:08,823 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:25:08,826 INFO L146 ILogger]: Start difference. First operand 56 states. Second operand 2 states. [2019-05-23 11:25:08,846 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:08,846 INFO L146 ILogger]: Finished difference Result 93 states and 111 transitions. [2019-05-23 11:25:08,846 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:25:08,848 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 27 [2019-05-23 11:25:08,848 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:08,858 INFO L146 ILogger]: With dead ends: 93 [2019-05-23 11:25:08,858 INFO L146 ILogger]: Without dead ends: 47 [2019-05-23 11:25:08,861 INFO L146 ILogger]: 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 [2019-05-23 11:25:08,875 INFO L146 ILogger]: Start minimizeSevpa. Operand 47 states. [2019-05-23 11:25:08,891 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-05-23 11:25:08,892 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:25:08,894 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-05-23 11:25:08,895 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 27 [2019-05-23 11:25:08,895 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:08,896 INFO L146 ILogger]: Abstraction has 47 states and 51 transitions. [2019-05-23 11:25:08,896 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:25:08,896 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 51 transitions. [2019-05-23 11:25:08,897 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:25:08,897 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:08,897 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] [2019-05-23 11:25:08,898 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:08,898 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:08,898 INFO L146 ILogger]: Analyzing trace with hash 1504438016, now seen corresponding path program 1 times [2019-05-23 11:25:08,898 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:08,899 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:08,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:08,900 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:08,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:08,921 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:09,031 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 11:25:09,031 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:09,031 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:25:09,033 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:09,034 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:09,035 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:09,035 INFO L146 ILogger]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2019-05-23 11:25:09,436 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:09,437 INFO L146 ILogger]: Finished difference Result 77 states and 83 transitions. [2019-05-23 11:25:09,437 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:25:09,437 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 27 [2019-05-23 11:25:09,438 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:09,440 INFO L146 ILogger]: With dead ends: 77 [2019-05-23 11:25:09,440 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:25:09,442 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 11:25:09,442 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:25:09,448 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 51. [2019-05-23 11:25:09,448 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:25:09,449 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2019-05-23 11:25:09,450 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 27 [2019-05-23 11:25:09,450 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:09,450 INFO L146 ILogger]: Abstraction has 51 states and 55 transitions. [2019-05-23 11:25:09,451 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:09,451 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 55 transitions. [2019-05-23 11:25:09,452 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:25:09,452 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:09,452 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] [2019-05-23 11:25:09,453 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:09,453 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:09,453 INFO L146 ILogger]: Analyzing trace with hash -903791427, now seen corresponding path program 1 times [2019-05-23 11:25:09,454 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:09,454 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:09,455 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:09,455 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:09,455 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:09,477 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:09,957 WARN L146 ILogger]: Spent 222.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 12 [2019-05-23 11:25:09,965 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 11:25:09,965 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:09,966 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:25:09,966 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:09,966 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:09,967 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:09,967 INFO L146 ILogger]: Start difference. First operand 51 states and 55 transitions. Second operand 5 states. [2019-05-23 11:25:10,058 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:10,058 INFO L146 ILogger]: Finished difference Result 85 states and 93 transitions. [2019-05-23 11:25:10,058 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:25:10,059 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 29 [2019-05-23 11:25:10,059 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:10,060 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:25:10,062 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:25:10,062 INFO L146 ILogger]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:10,063 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:25:10,067 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 52. [2019-05-23 11:25:10,068 INFO L146 ILogger]: Start removeUnreachable. Operand 52 states. [2019-05-23 11:25:10,069 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2019-05-23 11:25:10,069 INFO L146 ILogger]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 29 [2019-05-23 11:25:10,069 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:10,069 INFO L146 ILogger]: Abstraction has 52 states and 56 transitions. [2019-05-23 11:25:10,070 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:10,070 INFO L146 ILogger]: Start isEmpty. Operand 52 states and 56 transitions. [2019-05-23 11:25:10,071 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:25:10,071 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:10,071 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] [2019-05-23 11:25:10,071 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:10,072 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:10,072 INFO L146 ILogger]: Analyzing trace with hash -1701257046, now seen corresponding path program 1 times [2019-05-23 11:25:10,072 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:10,072 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:10,073 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,073 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:10,074 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,087 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:10,131 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 11:25:10,132 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:10,132 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:25:10,132 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:25:10,132 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:25:10,133 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:25:10,133 INFO L146 ILogger]: Start difference. First operand 52 states and 56 transitions. Second operand 3 states. [2019-05-23 11:25:10,175 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:10,176 INFO L146 ILogger]: Finished difference Result 93 states and 103 transitions. [2019-05-23 11:25:10,177 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:25:10,177 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 35 [2019-05-23 11:25:10,178 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:10,178 INFO L146 ILogger]: With dead ends: 93 [2019-05-23 11:25:10,178 INFO L146 ILogger]: Without dead ends: 58 [2019-05-23 11:25:10,179 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 11:25:10,180 INFO L146 ILogger]: Start minimizeSevpa. Operand 58 states. [2019-05-23 11:25:10,184 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 58 to 53. [2019-05-23 11:25:10,184 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:25:10,185 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2019-05-23 11:25:10,185 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 35 [2019-05-23 11:25:10,186 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:10,186 INFO L146 ILogger]: Abstraction has 53 states and 57 transitions. [2019-05-23 11:25:10,186 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:25:10,186 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 57 transitions. [2019-05-23 11:25:10,187 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:25:10,187 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:10,188 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] [2019-05-23 11:25:10,188 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:10,188 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:10,188 INFO L146 ILogger]: Analyzing trace with hash -1939310879, now seen corresponding path program 1 times [2019-05-23 11:25:10,189 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:10,189 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:10,190 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,190 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:10,190 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,218 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:10,361 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 11:25:10,361 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:10,361 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:25:10,362 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:25:10,362 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:25:10,362 INFO L146 ILogger]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:25:10,363 INFO L146 ILogger]: Start difference. First operand 53 states and 57 transitions. Second operand 4 states. [2019-05-23 11:25:10,480 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:10,481 INFO L146 ILogger]: Finished difference Result 93 states and 102 transitions. [2019-05-23 11:25:10,481 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:25:10,481 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 41 [2019-05-23 11:25:10,481 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:10,482 INFO L146 ILogger]: With dead ends: 93 [2019-05-23 11:25:10,482 INFO L146 ILogger]: Without dead ends: 57 [2019-05-23 11:25:10,483 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:10,484 INFO L146 ILogger]: Start minimizeSevpa. Operand 57 states. [2019-05-23 11:25:10,488 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 57 to 54. [2019-05-23 11:25:10,488 INFO L146 ILogger]: Start removeUnreachable. Operand 54 states. [2019-05-23 11:25:10,489 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2019-05-23 11:25:10,489 INFO L146 ILogger]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 41 [2019-05-23 11:25:10,489 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:10,490 INFO L146 ILogger]: Abstraction has 54 states and 58 transitions. [2019-05-23 11:25:10,490 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:25:10,490 INFO L146 ILogger]: Start isEmpty. Operand 54 states and 58 transitions. [2019-05-23 11:25:10,491 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:25:10,491 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:10,491 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] [2019-05-23 11:25:10,492 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:10,492 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:10,492 INFO L146 ILogger]: Analyzing trace with hash -754162047, now seen corresponding path program 1 times [2019-05-23 11:25:10,492 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:10,492 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:10,493 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,493 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:10,493 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,511 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:10,610 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 11:25:10,611 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:10,611 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 11:25:10,629 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:10,667 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:10,669 INFO L146 ILogger]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:25:10,677 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:10,712 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 11:25:10,731 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:10,731 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-05-23 11:25:10,731 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:10,732 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:10,732 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:10,732 INFO L146 ILogger]: Start difference. First operand 54 states and 58 transitions. Second operand 5 states. [2019-05-23 11:25:10,868 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:10,869 INFO L146 ILogger]: Finished difference Result 101 states and 111 transitions. [2019-05-23 11:25:10,870 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:25:10,870 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 41 [2019-05-23 11:25:10,871 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:10,871 INFO L146 ILogger]: With dead ends: 101 [2019-05-23 11:25:10,871 INFO L146 ILogger]: Without dead ends: 64 [2019-05-23 11:25:10,872 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:25:10,872 INFO L146 ILogger]: Start minimizeSevpa. Operand 64 states. [2019-05-23 11:25:10,876 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 64 to 59. [2019-05-23 11:25:10,877 INFO L146 ILogger]: Start removeUnreachable. Operand 59 states. [2019-05-23 11:25:10,877 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2019-05-23 11:25:10,878 INFO L146 ILogger]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 41 [2019-05-23 11:25:10,878 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:10,878 INFO L146 ILogger]: Abstraction has 59 states and 63 transitions. [2019-05-23 11:25:10,878 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:10,878 INFO L146 ILogger]: Start isEmpty. Operand 59 states and 63 transitions. [2019-05-23 11:25:10,879 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:25:10,879 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:10,879 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] [2019-05-23 11:25:10,880 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:10,880 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:10,880 INFO L146 ILogger]: Analyzing trace with hash 1824522104, now seen corresponding path program 1 times [2019-05-23 11:25:10,880 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:10,880 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:10,881 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,881 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:10,882 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,899 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,162 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 11:25:11,162 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:11,162 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 11:25:11,182 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:11,216 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,217 INFO L146 ILogger]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:25:11,220 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:11,365 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 11:25:11,385 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:11,385 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:25:11,386 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:25:11,386 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:25:11,386 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:25:11,386 INFO L146 ILogger]: Start difference. First operand 59 states and 63 transitions. Second operand 9 states. [2019-05-23 11:25:11,563 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:11,563 INFO L146 ILogger]: Finished difference Result 107 states and 116 transitions. [2019-05-23 11:25:11,565 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:25:11,565 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 47 [2019-05-23 11:25:11,566 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:11,567 INFO L146 ILogger]: With dead ends: 107 [2019-05-23 11:25:11,567 INFO L146 ILogger]: Without dead ends: 65 [2019-05-23 11:25:11,568 INFO L146 ILogger]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:25:11,568 INFO L146 ILogger]: Start minimizeSevpa. Operand 65 states. [2019-05-23 11:25:11,572 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 65 to 60. [2019-05-23 11:25:11,572 INFO L146 ILogger]: Start removeUnreachable. Operand 60 states. [2019-05-23 11:25:11,573 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2019-05-23 11:25:11,573 INFO L146 ILogger]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 47 [2019-05-23 11:25:11,573 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:11,574 INFO L146 ILogger]: Abstraction has 60 states and 64 transitions. [2019-05-23 11:25:11,574 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:25:11,574 INFO L146 ILogger]: Start isEmpty. Operand 60 states and 64 transitions. [2019-05-23 11:25:11,575 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:25:11,575 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:11,575 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] [2019-05-23 11:25:11,575 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:11,575 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:11,576 INFO L146 ILogger]: Analyzing trace with hash -1285296360, now seen corresponding path program 2 times [2019-05-23 11:25:11,576 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:11,576 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:11,577 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:11,577 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:11,577 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:11,592 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,657 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 11:25:11,658 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:11,658 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 11:25:11,666 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:11,692 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:11,692 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,693 INFO L146 ILogger]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:25:11,696 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:11,749 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 11:25:11,767 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:11,767 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2019-05-23 11:25:11,767 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:25:11,768 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:25:11,768 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:25:11,768 INFO L146 ILogger]: Start difference. First operand 60 states and 64 transitions. Second operand 8 states. [2019-05-23 11:25:12,114 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:12,114 INFO L146 ILogger]: Finished difference Result 107 states and 116 transitions. [2019-05-23 11:25:12,115 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:25:12,115 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 47 [2019-05-23 11:25:12,115 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:12,116 INFO L146 ILogger]: With dead ends: 107 [2019-05-23 11:25:12,116 INFO L146 ILogger]: Without dead ends: 64 [2019-05-23 11:25:12,117 INFO L146 ILogger]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:25:12,117 INFO L146 ILogger]: Start minimizeSevpa. Operand 64 states. [2019-05-23 11:25:12,130 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 64 to 64. [2019-05-23 11:25:12,130 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:25:12,131 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2019-05-23 11:25:12,131 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 47 [2019-05-23 11:25:12,131 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:12,131 INFO L146 ILogger]: Abstraction has 64 states and 68 transitions. [2019-05-23 11:25:12,132 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:25:12,132 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 68 transitions. [2019-05-23 11:25:12,136 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 54 [2019-05-23 11:25:12,136 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:12,136 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 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] [2019-05-23 11:25:12,137 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:12,139 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:12,139 INFO L146 ILogger]: Analyzing trace with hash -216106289, now seen corresponding path program 2 times [2019-05-23 11:25:12,139 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:12,139 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:12,140 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:12,141 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:12,141 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:12,193 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:13,527 INFO L146 ILogger]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:13,528 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:13,528 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 11:25:13,537 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:13,572 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:13,572 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:13,576 INFO L146 ILogger]: Trace formula consists of 86 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:25:13,581 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:13,846 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 11:25:13,846 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:13,862 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:13,863 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:13,863 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2019-05-23 11:25:13,987 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:13,989 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 29 treesize of output 28 [2019-05-23 11:25:13,989 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:14,006 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:14,007 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:14,007 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2019-05-23 11:25:14,113 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:14,139 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:14,139 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 93 [2019-05-23 11:25:14,141 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:14,182 INFO L146 ILogger]: treesize reduction 38, result has 59.1 percent of original size [2019-05-23 11:25:14,186 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 11:25:14,186 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:55 [2019-05-23 11:25:15,470 WARN L146 ILogger]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2019-05-23 11:25:15,565 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:15,565 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:25:15,566 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:15,568 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:15,569 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:15,569 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:3 [2019-05-23 11:25:15,707 INFO L146 ILogger]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:15,725 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:15,725 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38 [2019-05-23 11:25:15,726 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:25:15,726 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:25:15,727 INFO L146 ILogger]: CoverageRelationStatistics Valid=213, Invalid=1193, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:25:15,727 INFO L146 ILogger]: Start difference. First operand 64 states and 68 transitions. Second operand 38 states. [2019-05-23 11:25:17,149 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2019-05-23 11:25:17,487 WARN L146 ILogger]: Spent 168.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2019-05-23 11:25:17,953 WARN L146 ILogger]: Spent 220.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-05-23 11:25:18,138 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2019-05-23 11:25:18,393 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2019-05-23 11:25:18,802 WARN L146 ILogger]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2019-05-23 11:25:19,125 WARN L146 ILogger]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-05-23 11:25:21,704 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:21,705 INFO L146 ILogger]: Finished difference Result 272 states and 292 transitions. [2019-05-23 11:25:21,705 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2019-05-23 11:25:21,705 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 53 [2019-05-23 11:25:21,706 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:21,708 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:25:21,708 INFO L146 ILogger]: Without dead ends: 270 [2019-05-23 11:25:21,713 INFO L146 ILogger]: 0 DeclaredPredicates, 142 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3652 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1761, Invalid=9369, Unknown=0, NotChecked=0, Total=11130 [2019-05-23 11:25:21,714 INFO L146 ILogger]: Start minimizeSevpa. Operand 270 states. [2019-05-23 11:25:21,722 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 270 to 95. [2019-05-23 11:25:21,722 INFO L146 ILogger]: Start removeUnreachable. Operand 95 states. [2019-05-23 11:25:21,723 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2019-05-23 11:25:21,723 INFO L146 ILogger]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 53 [2019-05-23 11:25:21,723 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:21,723 INFO L146 ILogger]: Abstraction has 95 states and 103 transitions. [2019-05-23 11:25:21,724 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:25:21,724 INFO L146 ILogger]: Start isEmpty. Operand 95 states and 103 transitions. [2019-05-23 11:25:21,725 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:25:21,725 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:21,725 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:21,726 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:21,726 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:21,726 INFO L146 ILogger]: Analyzing trace with hash -547450178, now seen corresponding path program 1 times [2019-05-23 11:25:21,726 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:21,726 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:21,727 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:21,727 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:21,727 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:21,745 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:22,692 INFO L146 ILogger]: Checked inductivity of 28 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:22,692 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:22,692 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 11:25:22,701 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:22,736 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:22,738 INFO L146 ILogger]: Trace formula consists of 105 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:25:22,744 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:23,158 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 16 treesize of output 12 [2019-05-23 11:25:23,158 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,166 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,166 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,167 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:25:23,222 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,223 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 57 [2019-05-23 11:25:23,224 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,262 INFO L146 ILogger]: treesize reduction 21, result has 65.0 percent of original size [2019-05-23 11:25:23,264 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 11:25:23,264 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:39 [2019-05-23 11:25:24,277 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:25:24,277 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:24,283 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:24,283 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:24,283 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:25:24,347 INFO L146 ILogger]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:24,365 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:24,366 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 41 [2019-05-23 11:25:24,366 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:25:24,366 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:25:24,367 INFO L146 ILogger]: CoverageRelationStatistics Valid=178, Invalid=1462, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:25:24,367 INFO L146 ILogger]: Start difference. First operand 95 states and 103 transitions. Second operand 41 states. [2019-05-23 11:25:26,611 WARN L146 ILogger]: Spent 131.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2019-05-23 11:25:26,880 WARN L146 ILogger]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2019-05-23 11:25:27,265 WARN L146 ILogger]: Spent 126.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-05-23 11:25:27,566 WARN L146 ILogger]: Spent 123.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-05-23 11:25:27,876 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-05-23 11:25:28,119 WARN L146 ILogger]: Spent 202.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-05-23 11:25:28,585 WARN L146 ILogger]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-05-23 11:25:30,328 WARN L146 ILogger]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-05-23 11:25:30,862 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:30,862 INFO L146 ILogger]: Finished difference Result 225 states and 240 transitions. [2019-05-23 11:25:30,863 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2019-05-23 11:25:30,863 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 67 [2019-05-23 11:25:30,863 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:30,865 INFO L146 ILogger]: With dead ends: 225 [2019-05-23 11:25:30,865 INFO L146 ILogger]: Without dead ends: 223 [2019-05-23 11:25:30,868 INFO L146 ILogger]: 0 DeclaredPredicates, 153 GetRequests, 43 SyntacticMatches, 8 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3268 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1738, Invalid=8974, Unknown=0, NotChecked=0, Total=10712 [2019-05-23 11:25:30,869 INFO L146 ILogger]: Start minimizeSevpa. Operand 223 states. [2019-05-23 11:25:30,876 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 223 to 111. [2019-05-23 11:25:30,876 INFO L146 ILogger]: Start removeUnreachable. Operand 111 states. [2019-05-23 11:25:30,877 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2019-05-23 11:25:30,877 INFO L146 ILogger]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 67 [2019-05-23 11:25:30,877 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:30,877 INFO L146 ILogger]: Abstraction has 111 states and 120 transitions. [2019-05-23 11:25:30,878 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:25:30,878 INFO L146 ILogger]: Start isEmpty. Operand 111 states and 120 transitions. [2019-05-23 11:25:30,879 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 78 [2019-05-23 11:25:30,879 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:30,879 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:30,880 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:30,880 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:30,880 INFO L146 ILogger]: Analyzing trace with hash 858202849, now seen corresponding path program 3 times [2019-05-23 11:25:30,880 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:30,880 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:30,881 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:30,881 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:30,881 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:30,921 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:32,259 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:32,259 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:32,259 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 11:25:32,269 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:25:32,304 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:25:32,304 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:32,305 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 46 conjunts are in the unsatisfiable core [2019-05-23 11:25:32,310 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:32,424 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 11:25:32,424 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:32,435 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:32,436 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 11:25:32,437 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:35 [2019-05-23 11:25:32,523 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:32,523 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 83 [2019-05-23 11:25:32,524 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:32,556 INFO L146 ILogger]: treesize reduction 51, result has 49.0 percent of original size [2019-05-23 11:25:32,557 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 11:25:32,557 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:49 [2019-05-23 11:25:32,869 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:32,869 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 173 [2019-05-23 11:25:32,870 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:32,932 INFO L146 ILogger]: treesize reduction 88, result has 54.2 percent of original size [2019-05-23 11:25:32,934 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:32,935 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:72, output treesize:67 [2019-05-23 11:25:33,527 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,534 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,548 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,548 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 90 [2019-05-23 11:25:33,549 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,607 INFO L146 ILogger]: treesize reduction 29, result has 73.1 percent of original size [2019-05-23 11:25:33,609 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 11:25:33,609 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:67, output treesize:79 [2019-05-23 11:25:46,369 WARN L146 ILogger]: Spent 426.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2019-05-23 11:25:46,406 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:46,433 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:46,434 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 143 [2019-05-23 11:25:46,435 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:46,493 INFO L146 ILogger]: treesize reduction 87, result has 47.3 percent of original size [2019-05-23 11:25:46,495 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 11:25:46,495 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:73, output treesize:78 [2019-05-23 11:25:58,882 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:58,907 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:58,932 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:59,006 INFO L146 ILogger]: Index analysis took 146 ms [2019-05-23 11:25:59,079 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 0 case distinctions, treesize of input 79 treesize of output 81 [2019-05-23 11:25:59,080 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:59,134 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:59,232 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:59,233 INFO L146 ILogger]: Index analysis took 121 ms [2019-05-23 11:25:59,860 WARN L146 ILogger]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2019-05-23 11:25:59,861 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:59,862 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 228 [2019-05-23 11:25:59,863 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:00,401 WARN L146 ILogger]: Spent 536.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2019-05-23 11:26:00,402 INFO L146 ILogger]: treesize reduction 130, result has 59.2 percent of original size [2019-05-23 11:26:00,407 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2019-05-23 11:26:00,408 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 5 variables, input treesize:163, output treesize:189 [2019-05-23 11:26:01,796 WARN L146 ILogger]: Spent 1.02 s on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2019-05-23 11:26:02,438 WARN L146 ILogger]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-05-23 11:26:03,377 WARN L146 ILogger]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-05-23 11:26:03,835 INFO L146 ILogger]: Checked inductivity of 102 backedges. 5 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:03,853 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:03,853 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 54 [2019-05-23 11:26:03,854 INFO L146 ILogger]: Interpolant automaton has 54 states [2019-05-23 11:26:03,854 INFO L146 ILogger]: Constructing interpolant automaton starting with 54 interpolants. [2019-05-23 11:26:03,855 INFO L146 ILogger]: CoverageRelationStatistics Valid=366, Invalid=2495, Unknown=1, NotChecked=0, Total=2862 [2019-05-23 11:26:03,855 INFO L146 ILogger]: Start difference. First operand 111 states and 120 transitions. Second operand 54 states.