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-examples/standard_two_index_04_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:13,624 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:13,625 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:13,638 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:13,639 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:13,640 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:13,641 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:13,643 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:13,645 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:13,646 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:13,647 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:13,647 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:13,648 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:13,649 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:13,650 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:13,651 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:13,652 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:13,654 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:13,656 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:13,658 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:13,659 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:13,661 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:13,664 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:13,664 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:13,664 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:13,665 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:13,666 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:13,667 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:13,667 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:13,668 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:13,669 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:13,670 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:13,671 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:13,671 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:13,672 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:13,672 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:13,673 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:13,674 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:13,674 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:13,675 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:13,690 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:13,691 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:13,692 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:13,692 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:13,692 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:13,692 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:13,693 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:13,693 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:13,693 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:13,693 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:13,694 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:13,694 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:13,694 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:13,694 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:13,694 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:13,694 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:13,695 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:13,695 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:13,695 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:13,695 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:13,696 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:13,696 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:13,696 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:13,698 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:13,698 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:13,698 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:13,698 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:13,699 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:13,700 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 11:20:13,745 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:13,761 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:13,764 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:13,766 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:13,766 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:13,767 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_two_index_04_true-unreach-call.i [2019-05-23 11:20:13,833 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb7293d79/4f7d24b8440c47c6872aa26094a5e8e1/FLAG12c8b29df [2019-05-23 11:20:14,245 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:14,246 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_two_index_04_true-unreach-call.i [2019-05-23 11:20:14,251 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb7293d79/4f7d24b8440c47c6872aa26094a5e8e1/FLAG12c8b29df [2019-05-23 11:20:14,647 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb7293d79/4f7d24b8440c47c6872aa26094a5e8e1 [2019-05-23 11:20:14,659 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:14,660 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:14,662 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:14,662 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:14,666 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:14,667 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,670 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbf7bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14, skipping insertion in model container [2019-05-23 11:20:14,670 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,677 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:14,700 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:14,925 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:14,930 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:14,956 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:14,984 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:14,984 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14 WrapperNode [2019-05-23 11:20:14,985 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:14,985 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:14,986 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:14,986 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:14,996 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:15,007 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:15,034 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:15,034 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:15,034 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:15,035 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:15,046 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:15,047 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:15,049 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:15,049 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:15,066 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:15,071 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:15,075 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:15,077 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:15,078 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:15,085 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:15,085 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:15,086 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (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 11:20:15,241 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:20:15,242 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:15,242 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:15,242 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:15,242 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:15,242 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:15,685 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:15,685 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:20:15,686 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:15 BoogieIcfgContainer [2019-05-23 11:20:15,687 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:15,687 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:15,688 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:15,691 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:15,691 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:14" (1/3) ... [2019-05-23 11:20:15,692 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5778648e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:15, skipping insertion in model container [2019-05-23 11:20:15,692 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (2/3) ... [2019-05-23 11:20:15,692 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5778648e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:15, skipping insertion in model container [2019-05-23 11:20:15,693 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:15" (3/3) ... [2019-05-23 11:20:15,694 INFO L146 ILogger]: Analyzing ICFG standard_two_index_04_true-unreach-call.i [2019-05-23 11:20:15,703 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:15,710 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:15,727 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:15,758 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:15,758 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:15,759 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:15,759 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:15,760 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:15,760 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:15,761 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:15,761 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:15,761 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:15,777 INFO L146 ILogger]: Start isEmpty. Operand 43 states. [2019-05-23 11:20:15,784 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:15,784 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,785 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] [2019-05-23 11:20:15,787 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,792 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,793 INFO L146 ILogger]: Analyzing trace with hash -1541380129, now seen corresponding path program 1 times [2019-05-23 11:20:15,794 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,795 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,841 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,841 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,841 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,884 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,925 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 11:20:15,928 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:15,929 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:15,932 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:15,946 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:15,947 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:15,950 INFO L146 ILogger]: Start difference. First operand 43 states. Second operand 2 states. [2019-05-23 11:20:15,968 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:15,968 INFO L146 ILogger]: Finished difference Result 73 states and 83 transitions. [2019-05-23 11:20:15,969 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:15,970 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:20:15,971 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:15,981 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:20:15,981 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:20:15,984 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 11:20:16,000 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:20:16,013 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:20:16,014 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:20:16,015 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:20:16,017 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 21 [2019-05-23 11:20:16,017 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:16,017 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:20:16,017 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:16,018 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:20:16,018 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:16,019 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:16,019 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] [2019-05-23 11:20:16,019 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:16,019 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:16,020 INFO L146 ILogger]: Analyzing trace with hash 805843927, now seen corresponding path program 1 times [2019-05-23 11:20:16,020 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:16,020 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:16,021 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,021 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:16,021 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,035 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,101 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 11:20:16,104 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:16,104 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:16,106 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:16,106 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:16,106 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:16,107 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2019-05-23 11:20:16,206 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:16,206 INFO L146 ILogger]: Finished difference Result 62 states and 66 transitions. [2019-05-23 11:20:16,207 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:16,207 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:20:16,207 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:16,208 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:20:16,208 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:20:16,209 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 11:20:16,210 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:20:16,216 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-05-23 11:20:16,216 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:20:16,217 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-05-23 11:20:16,217 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 21 [2019-05-23 11:20:16,219 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:16,219 INFO L146 ILogger]: Abstraction has 36 states and 38 transitions. [2019-05-23 11:20:16,219 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:16,220 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 38 transitions. [2019-05-23 11:20:16,220 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:20:16,221 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:16,222 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] [2019-05-23 11:20:16,222 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:16,222 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:16,222 INFO L146 ILogger]: Analyzing trace with hash 1928914446, now seen corresponding path program 1 times [2019-05-23 11:20:16,223 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:16,223 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:16,225 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,225 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:16,225 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,266 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,308 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:16,309 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:16,309 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:16,309 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:16,313 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:16,313 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:16,313 INFO L146 ILogger]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2019-05-23 11:20:16,426 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:16,426 INFO L146 ILogger]: Finished difference Result 68 states and 71 transitions. [2019-05-23 11:20:16,428 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:16,428 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 26 [2019-05-23 11:20:16,428 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:16,429 INFO L146 ILogger]: With dead ends: 68 [2019-05-23 11:20:16,430 INFO L146 ILogger]: Without dead ends: 53 [2019-05-23 11:20:16,430 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 11:20:16,432 INFO L146 ILogger]: Start minimizeSevpa. Operand 53 states. [2019-05-23 11:20:16,437 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 53 to 37. [2019-05-23 11:20:16,438 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:20:16,440 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-05-23 11:20:16,440 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 26 [2019-05-23 11:20:16,441 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:16,441 INFO L146 ILogger]: Abstraction has 37 states and 39 transitions. [2019-05-23 11:20:16,441 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:16,441 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 39 transitions. [2019-05-23 11:20:16,443 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:20:16,443 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:16,444 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] [2019-05-23 11:20:16,444 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:16,444 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:16,445 INFO L146 ILogger]: Analyzing trace with hash 876855147, now seen corresponding path program 1 times [2019-05-23 11:20:16,445 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:16,445 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:16,446 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,447 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:16,447 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,475 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,552 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:16,552 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:16,552 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 11:20:16,572 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:16,611 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,613 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:16,620 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:16,653 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:16,673 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:16,674 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:16,674 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:16,674 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:16,675 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:16,675 INFO L146 ILogger]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2019-05-23 11:20:16,785 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:16,786 INFO L146 ILogger]: Finished difference Result 85 states and 89 transitions. [2019-05-23 11:20:16,786 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:16,786 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 32 [2019-05-23 11:20:16,787 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:16,788 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:20:16,788 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:20:16,789 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:16,789 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:20:16,793 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 42. [2019-05-23 11:20:16,794 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:20:16,794 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-05-23 11:20:16,795 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2019-05-23 11:20:16,795 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:16,795 INFO L146 ILogger]: Abstraction has 42 states and 44 transitions. [2019-05-23 11:20:16,795 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:16,795 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 44 transitions. [2019-05-23 11:20:16,796 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:20:16,796 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:16,797 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:20:16,797 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:16,797 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:16,797 INFO L146 ILogger]: Analyzing trace with hash -411413292, now seen corresponding path program 2 times [2019-05-23 11:20:16,798 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:16,798 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:16,799 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,799 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:16,799 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,063 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:17,063 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:17,063 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 11:20:17,082 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:17,132 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:17,132 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,133 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:17,135 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:17,179 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:17,209 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:17,209 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:20:17,210 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:20:17,210 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:20:17,211 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:17,211 INFO L146 ILogger]: Start difference. First operand 42 states and 44 transitions. Second operand 6 states. [2019-05-23 11:20:17,502 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:17,503 INFO L146 ILogger]: Finished difference Result 90 states and 94 transitions. [2019-05-23 11:20:17,506 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:17,506 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 37 [2019-05-23 11:20:17,506 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:17,507 INFO L146 ILogger]: With dead ends: 90 [2019-05-23 11:20:17,508 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:20:17,508 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:17,509 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:20:17,514 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 47. [2019-05-23 11:20:17,514 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:20:17,515 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2019-05-23 11:20:17,515 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 37 [2019-05-23 11:20:17,515 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:17,516 INFO L146 ILogger]: Abstraction has 47 states and 49 transitions. [2019-05-23 11:20:17,516 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:20:17,516 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 49 transitions. [2019-05-23 11:20:17,517 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:20:17,517 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:17,517 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:17,518 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:17,518 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:17,518 INFO L146 ILogger]: Analyzing trace with hash -1153058549, now seen corresponding path program 3 times [2019-05-23 11:20:17,518 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:17,518 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:17,519 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,519 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:17,520 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,538 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,637 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:17,637 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:17,637 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 11:20:17,656 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:17,677 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:20:17,677 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,678 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:17,680 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:17,717 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:17,745 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:17,746 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2019-05-23 11:20:17,746 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:20:17,747 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:20:17,748 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:17,748 INFO L146 ILogger]: Start difference. First operand 47 states and 49 transitions. Second operand 7 states. [2019-05-23 11:20:18,031 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:18,031 INFO L146 ILogger]: Finished difference Result 119 states and 125 transitions. [2019-05-23 11:20:18,032 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:20:18,032 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 42 [2019-05-23 11:20:18,032 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:18,033 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:20:18,033 INFO L146 ILogger]: Without dead ends: 96 [2019-05-23 11:20:18,034 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:18,034 INFO L146 ILogger]: Start minimizeSevpa. Operand 96 states. [2019-05-23 11:20:18,043 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 96 to 63. [2019-05-23 11:20:18,043 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:20:18,045 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2019-05-23 11:20:18,045 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 42 [2019-05-23 11:20:18,045 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:18,045 INFO L146 ILogger]: Abstraction has 63 states and 65 transitions. [2019-05-23 11:20:18,045 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:20:18,045 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 65 transitions. [2019-05-23 11:20:18,047 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:20:18,051 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:18,051 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 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] [2019-05-23 11:20:18,051 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:18,052 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:18,052 INFO L146 ILogger]: Analyzing trace with hash 1070488136, now seen corresponding path program 4 times [2019-05-23 11:20:18,052 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:18,052 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:18,053 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,053 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:18,053 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,107 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,267 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:18,267 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:18,268 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 11:20:18,280 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:18,309 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:18,309 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,311 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:18,313 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:18,333 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:18,356 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:18,356 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:20:18,357 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:18,357 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:18,357 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:18,357 INFO L146 ILogger]: Start difference. First operand 63 states and 65 transitions. Second operand 9 states. [2019-05-23 11:20:18,502 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:18,502 INFO L146 ILogger]: Finished difference Result 130 states and 134 transitions. [2019-05-23 11:20:18,502 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:18,502 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 58 [2019-05-23 11:20:18,503 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:18,504 INFO L146 ILogger]: With dead ends: 130 [2019-05-23 11:20:18,504 INFO L146 ILogger]: Without dead ends: 101 [2019-05-23 11:20:18,504 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:18,505 INFO L146 ILogger]: Start minimizeSevpa. Operand 101 states. [2019-05-23 11:20:18,510 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 101 to 68. [2019-05-23 11:20:18,510 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:20:18,511 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2019-05-23 11:20:18,512 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 58 [2019-05-23 11:20:18,512 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:18,512 INFO L146 ILogger]: Abstraction has 68 states and 70 transitions. [2019-05-23 11:20:18,512 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:18,512 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 70 transitions. [2019-05-23 11:20:18,513 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 64 [2019-05-23 11:20:18,513 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:18,514 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 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] [2019-05-23 11:20:18,514 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:18,514 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:18,514 INFO L146 ILogger]: Analyzing trace with hash 1820626545, now seen corresponding path program 5 times [2019-05-23 11:20:18,515 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:18,515 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:18,516 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,516 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:18,516 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,534 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,630 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:18,630 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:18,630 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 11:20:18,641 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:18,723 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:20:18,723 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,724 INFO L146 ILogger]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:18,726 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:18,806 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:20:18,825 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:18,825 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2019-05-23 11:20:18,826 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:20:18,826 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:20:18,826 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:18,826 INFO L146 ILogger]: Start difference. First operand 68 states and 70 transitions. Second operand 10 states. [2019-05-23 11:20:19,271 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:19,271 INFO L146 ILogger]: Finished difference Result 159 states and 165 transitions. [2019-05-23 11:20:19,272 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:20:19,272 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 63 [2019-05-23 11:20:19,273 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:19,274 INFO L146 ILogger]: With dead ends: 159 [2019-05-23 11:20:19,275 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:20:19,276 INFO L146 ILogger]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:19,277 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:20:19,284 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 84. [2019-05-23 11:20:19,285 INFO L146 ILogger]: Start removeUnreachable. Operand 84 states. [2019-05-23 11:20:19,286 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2019-05-23 11:20:19,286 INFO L146 ILogger]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 63 [2019-05-23 11:20:19,287 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:19,287 INFO L146 ILogger]: Abstraction has 84 states and 86 transitions. [2019-05-23 11:20:19,287 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:20:19,287 INFO L146 ILogger]: Start isEmpty. Operand 84 states and 86 transitions. [2019-05-23 11:20:19,289 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:20:19,289 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,289 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:19,289 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,289 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,290 INFO L146 ILogger]: Analyzing trace with hash -921576466, now seen corresponding path program 6 times [2019-05-23 11:20:19,290 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,290 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,291 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,291 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:19,291 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,313 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,950 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:19,951 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:19,951 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 11:20:19,962 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:20,019 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:20,020 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,021 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,023 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,095 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2019-05-23 11:20:20,115 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,115 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 13 [2019-05-23 11:20:20,115 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:20:20,115 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:20:20,116 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:20,116 INFO L146 ILogger]: Start difference. First operand 84 states and 86 transitions. Second operand 13 states. [2019-05-23 11:20:20,326 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:20,326 INFO L146 ILogger]: Finished difference Result 199 states and 206 transitions. [2019-05-23 11:20:20,326 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:20:20,327 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 79 [2019-05-23 11:20:20,327 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:20,328 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:20:20,328 INFO L146 ILogger]: Without dead ends: 164 [2019-05-23 11:20:20,329 INFO L146 ILogger]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:20,329 INFO L146 ILogger]: Start minimizeSevpa. Operand 164 states. [2019-05-23 11:20:20,335 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 164 to 105. [2019-05-23 11:20:20,335 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:20:20,336 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2019-05-23 11:20:20,336 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 79 [2019-05-23 11:20:20,336 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:20,336 INFO L146 ILogger]: Abstraction has 105 states and 107 transitions. [2019-05-23 11:20:20,337 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:20:20,337 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 107 transitions. [2019-05-23 11:20:20,338 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:20:20,338 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:20,338 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:20,339 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:20,339 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:20,339 INFO L146 ILogger]: Analyzing trace with hash -1433339614, now seen corresponding path program 7 times [2019-05-23 11:20:20,339 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:20,339 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:20,340 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,340 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:20,340 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,363 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,692 INFO L146 ILogger]: Checked inductivity of 326 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:20,693 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:20,693 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 11:20:20,705 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:20,733 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,734 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,738 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,768 INFO L146 ILogger]: Checked inductivity of 326 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:20,788 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,788 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:20:20,789 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:20:20,789 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:20:20,789 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:20,789 INFO L146 ILogger]: Start difference. First operand 105 states and 107 transitions. Second operand 15 states. [2019-05-23 11:20:21,239 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:21,239 INFO L146 ILogger]: Finished difference Result 193 states and 197 transitions. [2019-05-23 11:20:21,240 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:21,240 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 100 [2019-05-23 11:20:21,241 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:21,242 INFO L146 ILogger]: With dead ends: 193 [2019-05-23 11:20:21,242 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:20:21,243 INFO L146 ILogger]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:21,243 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:20:21,248 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 110. [2019-05-23 11:20:21,248 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:20:21,249 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2019-05-23 11:20:21,249 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 100 [2019-05-23 11:20:21,249 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:21,249 INFO L146 ILogger]: Abstraction has 110 states and 112 transitions. [2019-05-23 11:20:21,249 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:20:21,250 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 112 transitions. [2019-05-23 11:20:21,251 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:20:21,251 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:21,251 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:21,251 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:21,252 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:21,252 INFO L146 ILogger]: Analyzing trace with hash -1782519285, now seen corresponding path program 8 times [2019-05-23 11:20:21,252 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:21,252 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:21,253 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,253 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:21,253 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,273 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,473 INFO L146 ILogger]: Checked inductivity of 382 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:21,473 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:21,473 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:21,482 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:21,521 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:21,521 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,522 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:20:21,525 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:21,561 INFO L146 ILogger]: Checked inductivity of 382 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:21,580 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:21,580 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:20:21,581 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:20:21,581 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:20:21,581 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:21,582 INFO L146 ILogger]: Start difference. First operand 110 states and 112 transitions. Second operand 16 states. [2019-05-23 11:20:21,724 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:21,724 INFO L146 ILogger]: Finished difference Result 198 states and 202 transitions. [2019-05-23 11:20:21,725 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:20:21,725 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 105 [2019-05-23 11:20:21,725 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:21,727 INFO L146 ILogger]: With dead ends: 198 [2019-05-23 11:20:21,727 INFO L146 ILogger]: Without dead ends: 157 [2019-05-23 11:20:21,728 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:21,729 INFO L146 ILogger]: Start minimizeSevpa. Operand 157 states. [2019-05-23 11:20:21,733 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 157 to 115. [2019-05-23 11:20:21,733 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:20:21,734 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2019-05-23 11:20:21,734 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 105 [2019-05-23 11:20:21,735 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:21,735 INFO L146 ILogger]: Abstraction has 115 states and 117 transitions. [2019-05-23 11:20:21,735 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:20:21,735 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 117 transitions. [2019-05-23 11:20:21,736 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:20:21,736 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:21,737 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:21,737 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:21,737 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:21,737 INFO L146 ILogger]: Analyzing trace with hash 1755325122, now seen corresponding path program 9 times [2019-05-23 11:20:21,737 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:21,737 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:21,738 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,738 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:21,738 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,756 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,949 INFO L146 ILogger]: Checked inductivity of 443 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:21,949 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:21,949 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:21,958 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:21,989 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:20:21,989 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,989 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:21,992 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:22,031 INFO L146 ILogger]: Checked inductivity of 443 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2019-05-23 11:20:22,049 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:22,050 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 17 [2019-05-23 11:20:22,050 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:20:22,050 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:20:22,051 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:22,051 INFO L146 ILogger]: Start difference. First operand 115 states and 117 transitions. Second operand 17 states. [2019-05-23 11:20:22,321 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:22,321 INFO L146 ILogger]: Finished difference Result 244 states and 250 transitions. [2019-05-23 11:20:22,321 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:20:22,322 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 110 [2019-05-23 11:20:22,322 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:22,324 INFO L146 ILogger]: With dead ends: 244 [2019-05-23 11:20:22,324 INFO L146 ILogger]: Without dead ends: 203 [2019-05-23 11:20:22,325 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:22,325 INFO L146 ILogger]: Start minimizeSevpa. Operand 203 states. [2019-05-23 11:20:22,329 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 203 to 131. [2019-05-23 11:20:22,330 INFO L146 ILogger]: Start removeUnreachable. Operand 131 states. [2019-05-23 11:20:22,330 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2019-05-23 11:20:22,330 INFO L146 ILogger]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 110 [2019-05-23 11:20:22,331 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:22,331 INFO L146 ILogger]: Abstraction has 131 states and 133 transitions. [2019-05-23 11:20:22,331 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:20:22,331 INFO L146 ILogger]: Start isEmpty. Operand 131 states and 133 transitions. [2019-05-23 11:20:22,332 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:20:22,332 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:22,333 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:22,333 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:22,333 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:22,333 INFO L146 ILogger]: Analyzing trace with hash -1757966657, now seen corresponding path program 10 times [2019-05-23 11:20:22,333 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:22,333 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:22,334 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,334 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:22,335 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,353 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:22,680 INFO L146 ILogger]: Checked inductivity of 605 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:22,681 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:22,681 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:22,690 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:22,823 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:22,824 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:22,826 INFO L146 ILogger]: Trace formula consists of 200 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:20:22,829 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:22,854 INFO L146 ILogger]: Checked inductivity of 605 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:22,873 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:22,873 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:20:22,874 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:20:22,874 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:20:22,875 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:22,875 INFO L146 ILogger]: Start difference. First operand 131 states and 133 transitions. Second operand 19 states. [2019-05-23 11:20:23,165 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:23,166 INFO L146 ILogger]: Finished difference Result 238 states and 242 transitions. [2019-05-23 11:20:23,166 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:20:23,166 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 126 [2019-05-23 11:20:23,167 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:23,168 INFO L146 ILogger]: With dead ends: 238 [2019-05-23 11:20:23,168 INFO L146 ILogger]: Without dead ends: 191 [2019-05-23 11:20:23,168 INFO L146 ILogger]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:23,169 INFO L146 ILogger]: Start minimizeSevpa. Operand 191 states. [2019-05-23 11:20:23,173 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 191 to 136. [2019-05-23 11:20:23,173 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:20:23,173 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2019-05-23 11:20:23,174 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 126 [2019-05-23 11:20:23,174 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:23,174 INFO L146 ILogger]: Abstraction has 136 states and 138 transitions. [2019-05-23 11:20:23,174 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:20:23,174 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 138 transitions. [2019-05-23 11:20:23,175 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:20:23,175 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:23,176 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:23,176 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:23,176 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:23,176 INFO L146 ILogger]: Analyzing trace with hash 2342504, now seen corresponding path program 11 times [2019-05-23 11:20:23,176 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:23,177 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:23,177 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:23,177 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:23,178 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:23,196 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:23,499 INFO L146 ILogger]: Checked inductivity of 681 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:23,499 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:23,499 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:23,509 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:23,883 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2019-05-23 11:20:23,883 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:23,885 INFO L146 ILogger]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:23,887 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:23,956 INFO L146 ILogger]: Checked inductivity of 681 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2019-05-23 11:20:23,977 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:23,977 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8] total 21 [2019-05-23 11:20:23,978 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:20:23,978 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:20:23,979 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:23,979 INFO L146 ILogger]: Start difference. First operand 136 states and 138 transitions. Second operand 21 states. [2019-05-23 11:20:24,208 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:24,208 INFO L146 ILogger]: Finished difference Result 289 states and 296 transitions. [2019-05-23 11:20:24,209 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:20:24,209 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 131 [2019-05-23 11:20:24,209 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:24,211 INFO L146 ILogger]: With dead ends: 289 [2019-05-23 11:20:24,211 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:20:24,213 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:24,213 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:20:24,217 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 157. [2019-05-23 11:20:24,217 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:20:24,218 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2019-05-23 11:20:24,218 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 131 [2019-05-23 11:20:24,218 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:24,219 INFO L146 ILogger]: Abstraction has 157 states and 159 transitions. [2019-05-23 11:20:24,219 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:20:24,219 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 159 transitions. [2019-05-23 11:20:24,220 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:20:24,220 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:24,220 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:24,221 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:24,221 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:24,221 INFO L146 ILogger]: Analyzing trace with hash -788190564, now seen corresponding path program 12 times [2019-05-23 11:20:24,221 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:24,221 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:24,224 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:24,224 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:24,224 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:24,242 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,548 INFO L146 ILogger]: Checked inductivity of 970 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:24,548 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:24,548 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:24,556 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:25,351 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:20:25,351 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,353 INFO L146 ILogger]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:25,354 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:25,446 INFO L146 ILogger]: Checked inductivity of 970 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2019-05-23 11:20:25,465 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:25,466 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 9] total 24 [2019-05-23 11:20:25,466 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:20:25,466 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:20:25,467 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:25,467 INFO L146 ILogger]: Start difference. First operand 157 states and 159 transitions. Second operand 24 states. [2019-05-23 11:20:25,985 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:25,985 INFO L146 ILogger]: Finished difference Result 329 states and 336 transitions. [2019-05-23 11:20:25,985 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:20:25,985 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 152 [2019-05-23 11:20:25,986 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:25,988 INFO L146 ILogger]: With dead ends: 329 [2019-05-23 11:20:25,988 INFO L146 ILogger]: Without dead ends: 276 [2019-05-23 11:20:25,989 INFO L146 ILogger]: 0 DeclaredPredicates, 173 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:25,990 INFO L146 ILogger]: Start minimizeSevpa. Operand 276 states. [2019-05-23 11:20:25,993 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 276 to 178. [2019-05-23 11:20:25,994 INFO L146 ILogger]: Start removeUnreachable. Operand 178 states. [2019-05-23 11:20:25,994 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2019-05-23 11:20:25,995 INFO L146 ILogger]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 152 [2019-05-23 11:20:25,995 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:25,995 INFO L146 ILogger]: Abstraction has 178 states and 180 transitions. [2019-05-23 11:20:25,995 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:20:25,995 INFO L146 ILogger]: Start isEmpty. Operand 178 states and 180 transitions. [2019-05-23 11:20:25,996 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 174 [2019-05-23 11:20:25,996 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:25,996 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:25,997 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:25,997 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:25,997 INFO L146 ILogger]: Analyzing trace with hash 49237890, now seen corresponding path program 13 times [2019-05-23 11:20:25,997 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:25,997 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:25,998 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,998 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:25,998 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,017 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,449 INFO L146 ILogger]: Checked inductivity of 1310 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:26,450 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:26,450 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:26,458 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:26,500 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,501 INFO L146 ILogger]: Trace formula consists of 267 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:20:26,504 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:26,594 INFO L146 ILogger]: Checked inductivity of 1310 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:26,623 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:26,624 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-05-23 11:20:26,624 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:20:26,625 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:20:26,625 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:26,625 INFO L146 ILogger]: Start difference. First operand 178 states and 180 transitions. Second operand 26 states. [2019-05-23 11:20:27,257 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:27,258 INFO L146 ILogger]: Finished difference Result 323 states and 327 transitions. [2019-05-23 11:20:27,258 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:20:27,258 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 173 [2019-05-23 11:20:27,258 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:27,260 INFO L146 ILogger]: With dead ends: 323 [2019-05-23 11:20:27,260 INFO L146 ILogger]: Without dead ends: 264 [2019-05-23 11:20:27,261 INFO L146 ILogger]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:27,262 INFO L146 ILogger]: Start minimizeSevpa. Operand 264 states. [2019-05-23 11:20:27,267 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 264 to 183. [2019-05-23 11:20:27,267 INFO L146 ILogger]: Start removeUnreachable. Operand 183 states. [2019-05-23 11:20:27,268 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2019-05-23 11:20:27,268 INFO L146 ILogger]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 173 [2019-05-23 11:20:27,268 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:27,269 INFO L146 ILogger]: Abstraction has 183 states and 185 transitions. [2019-05-23 11:20:27,269 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:20:27,269 INFO L146 ILogger]: Start isEmpty. Operand 183 states and 185 transitions. [2019-05-23 11:20:27,270 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 179 [2019-05-23 11:20:27,270 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:27,270 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:27,271 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:27,271 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:27,271 INFO L146 ILogger]: Analyzing trace with hash 788536505, now seen corresponding path program 14 times [2019-05-23 11:20:27,271 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:27,272 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:27,272 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,272 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:27,273 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,293 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,610 INFO L146 ILogger]: Checked inductivity of 1421 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:28,610 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:28,610 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:28,619 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:28,662 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:28,662 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,663 INFO L146 ILogger]: Trace formula consists of 274 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:20:28,665 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:28,719 INFO L146 ILogger]: Checked inductivity of 1421 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:28,740 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:28,741 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:20:28,741 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:20:28,741 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:20:28,742 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:20:28,742 INFO L146 ILogger]: Start difference. First operand 183 states and 185 transitions. Second operand 27 states. [2019-05-23 11:20:29,023 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:29,024 INFO L146 ILogger]: Finished difference Result 328 states and 332 transitions. [2019-05-23 11:20:29,024 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:20:29,024 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 178 [2019-05-23 11:20:29,025 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:29,026 INFO L146 ILogger]: With dead ends: 328 [2019-05-23 11:20:29,026 INFO L146 ILogger]: Without dead ends: 269 [2019-05-23 11:20:29,027 INFO L146 ILogger]: 0 DeclaredPredicates, 203 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:20:29,028 INFO L146 ILogger]: Start minimizeSevpa. Operand 269 states. [2019-05-23 11:20:29,031 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 269 to 188. [2019-05-23 11:20:29,031 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:20:29,032 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions. [2019-05-23 11:20:29,032 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 178 [2019-05-23 11:20:29,032 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:29,032 INFO L146 ILogger]: Abstraction has 188 states and 190 transitions. [2019-05-23 11:20:29,032 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:20:29,032 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 190 transitions. [2019-05-23 11:20:29,033 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 184 [2019-05-23 11:20:29,033 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:29,034 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:29,034 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:29,034 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:29,034 INFO L146 ILogger]: Analyzing trace with hash 1010956770, now seen corresponding path program 15 times [2019-05-23 11:20:29,034 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:29,035 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:29,035 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,035 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:29,035 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,054 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:29,519 INFO L146 ILogger]: Checked inductivity of 1537 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:29,519 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:29,519 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:29,527 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:29,658 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:20:29,658 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:29,659 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:29,661 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:29,745 INFO L146 ILogger]: Checked inductivity of 1537 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2019-05-23 11:20:29,764 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:29,764 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 10] total 29 [2019-05-23 11:20:29,764 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:20:29,765 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:20:29,765 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:20:29,765 INFO L146 ILogger]: Start difference. First operand 188 states and 190 transitions. Second operand 29 states. [2019-05-23 11:20:30,709 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:30,709 INFO L146 ILogger]: Finished difference Result 379 states and 386 transitions. [2019-05-23 11:20:30,710 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:20:30,710 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 183 [2019-05-23 11:20:30,710 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:30,711 INFO L146 ILogger]: With dead ends: 379 [2019-05-23 11:20:30,712 INFO L146 ILogger]: Without dead ends: 320 [2019-05-23 11:20:30,712 INFO L146 ILogger]: 0 DeclaredPredicates, 209 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:20:30,713 INFO L146 ILogger]: Start minimizeSevpa. Operand 320 states. [2019-05-23 11:20:30,717 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 320 to 209. [2019-05-23 11:20:30,718 INFO L146 ILogger]: Start removeUnreachable. Operand 209 states. [2019-05-23 11:20:30,718 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2019-05-23 11:20:30,719 INFO L146 ILogger]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 183 [2019-05-23 11:20:30,719 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:30,719 INFO L146 ILogger]: Abstraction has 209 states and 211 transitions. [2019-05-23 11:20:30,719 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:20:30,719 INFO L146 ILogger]: Start isEmpty. Operand 209 states and 211 transitions. [2019-05-23 11:20:30,720 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 205 [2019-05-23 11:20:30,721 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:30,721 INFO L146 ILogger]: trace histogram [27, 27, 27, 27, 27, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:30,721 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:30,721 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:30,722 INFO L146 ILogger]: Analyzing trace with hash -583879402, now seen corresponding path program 16 times [2019-05-23 11:20:30,722 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:30,722 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:30,723 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:30,723 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:30,723 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:30,743 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:31,236 INFO L146 ILogger]: Checked inductivity of 1958 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:31,236 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:31,236 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:31,244 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:32,313 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:32,313 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:32,318 INFO L146 ILogger]: Trace formula consists of 311 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:20:32,321 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:32,393 INFO L146 ILogger]: Checked inductivity of 1958 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:32,413 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:32,413 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-05-23 11:20:32,414 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:20:32,414 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:20:32,414 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:32,415 INFO L146 ILogger]: Start difference. First operand 209 states and 211 transitions. Second operand 31 states. [2019-05-23 11:20:32,793 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:32,794 INFO L146 ILogger]: Finished difference Result 373 states and 377 transitions. [2019-05-23 11:20:32,794 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:20:32,794 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 204 [2019-05-23 11:20:32,794 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:32,796 INFO L146 ILogger]: With dead ends: 373 [2019-05-23 11:20:32,796 INFO L146 ILogger]: Without dead ends: 308 [2019-05-23 11:20:32,797 INFO L146 ILogger]: 0 DeclaredPredicates, 233 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:32,798 INFO L146 ILogger]: Start minimizeSevpa. Operand 308 states. [2019-05-23 11:20:32,805 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 308 to 214. [2019-05-23 11:20:32,805 INFO L146 ILogger]: Start removeUnreachable. Operand 214 states. [2019-05-23 11:20:32,806 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 214 states to 214 states and 216 transitions. [2019-05-23 11:20:32,806 INFO L146 ILogger]: Start accepts. Automaton has 214 states and 216 transitions. Word has length 204 [2019-05-23 11:20:32,807 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:32,807 INFO L146 ILogger]: Abstraction has 214 states and 216 transitions. [2019-05-23 11:20:32,807 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:20:32,807 INFO L146 ILogger]: Start isEmpty. Operand 214 states and 216 transitions. [2019-05-23 11:20:32,808 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 210 [2019-05-23 11:20:32,808 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:32,808 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:32,809 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:32,809 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:32,809 INFO L146 ILogger]: Analyzing trace with hash 346423551, now seen corresponding path program 17 times [2019-05-23 11:20:32,809 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:32,809 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:32,810 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:32,810 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:32,810 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:32,831 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:33,812 INFO L146 ILogger]: Checked inductivity of 2094 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:33,812 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:33,812 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:33,823 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:59,793 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2019-05-23 11:20:59,793 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:59,808 INFO L146 ILogger]: Trace formula consists of 318 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:20:59,810 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:59,882 INFO L146 ILogger]: Checked inductivity of 2094 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:59,920 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:59,920 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:20:59,921 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:20:59,921 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:20:59,922 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:20:59,922 INFO L146 ILogger]: Start difference. First operand 214 states and 216 transitions. Second operand 32 states. [2019-05-23 11:21:00,234 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:00,234 INFO L146 ILogger]: Finished difference Result 378 states and 382 transitions. [2019-05-23 11:21:00,236 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:21:00,236 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 209 [2019-05-23 11:21:00,236 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:00,238 INFO L146 ILogger]: With dead ends: 378 [2019-05-23 11:21:00,238 INFO L146 ILogger]: Without dead ends: 313 [2019-05-23 11:21:00,239 INFO L146 ILogger]: 0 DeclaredPredicates, 239 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:21:00,239 INFO L146 ILogger]: Start minimizeSevpa. Operand 313 states. [2019-05-23 11:21:00,243 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 313 to 219. [2019-05-23 11:21:00,243 INFO L146 ILogger]: Start removeUnreachable. Operand 219 states. [2019-05-23 11:21:00,244 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 219 states to 219 states and 221 transitions. [2019-05-23 11:21:00,244 INFO L146 ILogger]: Start accepts. Automaton has 219 states and 221 transitions. Word has length 209 [2019-05-23 11:21:00,244 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:00,244 INFO L146 ILogger]: Abstraction has 219 states and 221 transitions. [2019-05-23 11:21:00,244 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:21:00,245 INFO L146 ILogger]: Start isEmpty. Operand 219 states and 221 transitions. [2019-05-23 11:21:00,245 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 215 [2019-05-23 11:21:00,246 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:00,246 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:00,246 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:00,246 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:00,247 INFO L146 ILogger]: Analyzing trace with hash 371375798, now seen corresponding path program 18 times [2019-05-23 11:21:00,247 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:00,247 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:00,248 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:00,248 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:00,248 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:00,268 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:01,332 INFO L146 ILogger]: Checked inductivity of 2235 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:01,333 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:01,333 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:01,341 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:04,510 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2019-05-23 11:21:04,510 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:04,514 INFO L146 ILogger]: Trace formula consists of 234 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:21:04,516 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:04,579 INFO L146 ILogger]: Checked inductivity of 2235 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2019-05-23 11:21:04,599 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:04,600 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 11] total 33 [2019-05-23 11:21:04,600 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:21:04,600 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:21:04,601 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:21:04,601 INFO L146 ILogger]: Start difference. First operand 219 states and 221 transitions. Second operand 33 states. [2019-05-23 11:21:04,930 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:04,930 INFO L146 ILogger]: Finished difference Result 424 states and 430 transitions. [2019-05-23 11:21:04,931 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:21:04,931 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 214 [2019-05-23 11:21:04,931 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:04,932 INFO L146 ILogger]: With dead ends: 424 [2019-05-23 11:21:04,932 INFO L146 ILogger]: Without dead ends: 359 [2019-05-23 11:21:04,933 INFO L146 ILogger]: 0 DeclaredPredicates, 245 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:21:04,933 INFO L146 ILogger]: Start minimizeSevpa. Operand 359 states. [2019-05-23 11:21:04,938 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 359 to 235. [2019-05-23 11:21:04,938 INFO L146 ILogger]: Start removeUnreachable. Operand 235 states. [2019-05-23 11:21:04,939 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2019-05-23 11:21:04,939 INFO L146 ILogger]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 214 [2019-05-23 11:21:04,939 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:04,939 INFO L146 ILogger]: Abstraction has 235 states and 237 transitions. [2019-05-23 11:21:04,939 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:21:04,940 INFO L146 ILogger]: Start isEmpty. Operand 235 states and 237 transitions. [2019-05-23 11:21:04,941 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 231 [2019-05-23 11:21:04,941 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:04,941 INFO L146 ILogger]: trace histogram [31, 31, 31, 31, 31, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:04,941 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:04,941 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:04,942 INFO L146 ILogger]: Analyzing trace with hash -911522893, now seen corresponding path program 19 times [2019-05-23 11:21:04,942 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:04,942 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:04,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:04,943 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:04,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:04,964 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:05,484 INFO L146 ILogger]: Checked inductivity of 2581 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:21:05,485 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:05,485 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:05,493 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:05,546 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:05,548 INFO L146 ILogger]: Trace formula consists of 348 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:21:05,552 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:05,708 INFO L146 ILogger]: Checked inductivity of 2581 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:21:05,741 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:05,741 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2019-05-23 11:21:05,742 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:21:05,742 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:21:05,743 INFO L146 ILogger]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:21:05,743 INFO L146 ILogger]: Start difference. First operand 235 states and 237 transitions. Second operand 35 states. [2019-05-23 11:21:07,051 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:07,052 INFO L146 ILogger]: Finished difference Result 418 states and 422 transitions. [2019-05-23 11:21:07,053 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:21:07,053 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 230 [2019-05-23 11:21:07,054 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:07,056 INFO L146 ILogger]: With dead ends: 418 [2019-05-23 11:21:07,057 INFO L146 ILogger]: Without dead ends: 347 [2019-05-23 11:21:07,057 INFO L146 ILogger]: 0 DeclaredPredicates, 263 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:21:07,058 INFO L146 ILogger]: Start minimizeSevpa. Operand 347 states. [2019-05-23 11:21:07,062 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 347 to 240. [2019-05-23 11:21:07,062 INFO L146 ILogger]: Start removeUnreachable. Operand 240 states. [2019-05-23 11:21:07,062 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 240 states to 240 states and 242 transitions. [2019-05-23 11:21:07,063 INFO L146 ILogger]: Start accepts. Automaton has 240 states and 242 transitions. Word has length 230 [2019-05-23 11:21:07,063 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:07,063 INFO L146 ILogger]: Abstraction has 240 states and 242 transitions. [2019-05-23 11:21:07,063 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:21:07,063 INFO L146 ILogger]: Start isEmpty. Operand 240 states and 242 transitions. [2019-05-23 11:21:07,064 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 236 [2019-05-23 11:21:07,065 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:07,065 INFO L146 ILogger]: trace histogram [32, 32, 32, 32, 32, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:07,065 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:07,065 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:07,065 INFO L146 ILogger]: Analyzing trace with hash -1307636132, now seen corresponding path program 20 times [2019-05-23 11:21:07,066 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:07,066 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:07,066 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:07,067 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:07,067 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:07,095 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:08,018 INFO L146 ILogger]: Checked inductivity of 2737 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:21:08,018 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:08,018 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:08,029 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:08,091 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:08,091 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:08,093 INFO L146 ILogger]: Trace formula consists of 355 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:21:08,095 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:08,197 INFO L146 ILogger]: Checked inductivity of 2737 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:21:08,216 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:08,217 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2019-05-23 11:21:08,217 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:21:08,217 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:21:08,218 INFO L146 ILogger]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:21:08,218 INFO L146 ILogger]: Start difference. First operand 240 states and 242 transitions. Second operand 36 states. [2019-05-23 11:21:08,585 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:08,586 INFO L146 ILogger]: Finished difference Result 423 states and 427 transitions. [2019-05-23 11:21:08,586 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:21:08,586 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 235 [2019-05-23 11:21:08,587 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:08,588 INFO L146 ILogger]: With dead ends: 423 [2019-05-23 11:21:08,588 INFO L146 ILogger]: Without dead ends: 352 [2019-05-23 11:21:08,589 INFO L146 ILogger]: 0 DeclaredPredicates, 269 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:21:08,590 INFO L146 ILogger]: Start minimizeSevpa. Operand 352 states. [2019-05-23 11:21:08,594 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 352 to 245. [2019-05-23 11:21:08,594 INFO L146 ILogger]: Start removeUnreachable. Operand 245 states. [2019-05-23 11:21:08,594 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 245 states to 245 states and 247 transitions. [2019-05-23 11:21:08,595 INFO L146 ILogger]: Start accepts. Automaton has 245 states and 247 transitions. Word has length 235 [2019-05-23 11:21:08,595 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:08,595 INFO L146 ILogger]: Abstraction has 245 states and 247 transitions. [2019-05-23 11:21:08,595 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:21:08,595 INFO L146 ILogger]: Start isEmpty. Operand 245 states and 247 transitions. [2019-05-23 11:21:08,596 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 241 [2019-05-23 11:21:08,597 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:08,597 INFO L146 ILogger]: trace histogram [33, 33, 33, 33, 33, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:08,597 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:08,597 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:08,598 INFO L146 ILogger]: Analyzing trace with hash 1658619219, now seen corresponding path program 21 times [2019-05-23 11:21:08,598 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:08,598 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:08,599 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:08,599 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:08,599 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:08,624 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:09,247 INFO L146 ILogger]: Checked inductivity of 2898 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:21:09,248 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:09,248 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:09,256 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:09,559 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:21:09,559 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:09,561 INFO L146 ILogger]: Trace formula consists of 194 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:21:09,564 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:09,635 INFO L146 ILogger]: Checked inductivity of 2898 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2673 trivial. 0 not checked. [2019-05-23 11:21:09,655 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:09,655 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 12] total 37 [2019-05-23 11:21:09,656 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:21:09,656 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:21:09,656 INFO L146 ILogger]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:21:09,657 INFO L146 ILogger]: Start difference. First operand 245 states and 247 transitions. Second operand 37 states. [2019-05-23 11:21:10,058 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:10,058 INFO L146 ILogger]: Finished difference Result 469 states and 475 transitions. [2019-05-23 11:21:10,058 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:21:10,059 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 240 [2019-05-23 11:21:10,059 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:10,061 INFO L146 ILogger]: With dead ends: 469 [2019-05-23 11:21:10,061 INFO L146 ILogger]: Without dead ends: 398 [2019-05-23 11:21:10,062 INFO L146 ILogger]: 0 DeclaredPredicates, 275 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:21:10,062 INFO L146 ILogger]: Start minimizeSevpa. Operand 398 states. [2019-05-23 11:21:10,067 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 398 to 261. [2019-05-23 11:21:10,067 INFO L146 ILogger]: Start removeUnreachable. Operand 261 states. [2019-05-23 11:21:10,068 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 261 states to 261 states and 263 transitions. [2019-05-23 11:21:10,068 INFO L146 ILogger]: Start accepts. Automaton has 261 states and 263 transitions. Word has length 240 [2019-05-23 11:21:10,068 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:10,068 INFO L146 ILogger]: Abstraction has 261 states and 263 transitions. [2019-05-23 11:21:10,068 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:21:10,069 INFO L146 ILogger]: Start isEmpty. Operand 261 states and 263 transitions. [2019-05-23 11:21:10,070 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 257 [2019-05-23 11:21:10,070 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:10,070 INFO L146 ILogger]: trace histogram [35, 35, 35, 35, 35, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:10,070 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:10,071 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:10,071 INFO L146 ILogger]: Analyzing trace with hash 1367087248, now seen corresponding path program 22 times [2019-05-23 11:21:10,071 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:10,071 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:10,072 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:10,072 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:10,072 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:10,097 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:11,391 INFO L146 ILogger]: Checked inductivity of 3290 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:21:11,391 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:11,391 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:11,402 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:13,480 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:13,480 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:13,486 INFO L146 ILogger]: Trace formula consists of 385 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:21:13,488 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:13,556 INFO L146 ILogger]: Checked inductivity of 3290 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:21:13,579 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:13,579 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2019-05-23 11:21:13,580 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:21:13,580 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:21:13,580 INFO L146 ILogger]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:21:13,580 INFO L146 ILogger]: Start difference. First operand 261 states and 263 transitions. Second operand 39 states. [2019-05-23 11:21:13,979 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:13,979 INFO L146 ILogger]: Finished difference Result 463 states and 467 transitions. [2019-05-23 11:21:13,979 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:21:13,980 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 256 [2019-05-23 11:21:13,980 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:13,983 INFO L146 ILogger]: With dead ends: 463 [2019-05-23 11:21:13,983 INFO L146 ILogger]: Without dead ends: 386 [2019-05-23 11:21:13,984 INFO L146 ILogger]: 0 DeclaredPredicates, 293 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:21:13,984 INFO L146 ILogger]: Start minimizeSevpa. Operand 386 states. [2019-05-23 11:21:13,988 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 386 to 266. [2019-05-23 11:21:13,988 INFO L146 ILogger]: Start removeUnreachable. Operand 266 states. [2019-05-23 11:21:13,989 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 266 states to 266 states and 268 transitions. [2019-05-23 11:21:13,989 INFO L146 ILogger]: Start accepts. Automaton has 266 states and 268 transitions. Word has length 256 [2019-05-23 11:21:13,990 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:13,990 INFO L146 ILogger]: Abstraction has 266 states and 268 transitions. [2019-05-23 11:21:13,990 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:21:13,990 INFO L146 ILogger]: Start isEmpty. Operand 266 states and 268 transitions. [2019-05-23 11:21:13,991 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 262 [2019-05-23 11:21:13,991 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:13,991 INFO L146 ILogger]: trace histogram [36, 36, 36, 36, 36, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:13,992 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:13,992 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:13,992 INFO L146 ILogger]: Analyzing trace with hash -2116324871, now seen corresponding path program 23 times [2019-05-23 11:21:13,992 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:13,992 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:13,993 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:13,993 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:13,993 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:14,016 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:14,684 INFO L146 ILogger]: Checked inductivity of 3466 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:21:14,685 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:14,685 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:14,694 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1