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_07_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:34,474 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:34,476 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:34,491 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:34,492 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:34,493 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:34,494 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:34,496 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:34,498 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:34,498 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:34,499 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:34,500 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:34,501 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:34,501 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:34,503 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:34,503 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:34,504 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:34,506 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:34,508 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:34,510 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:34,511 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:34,512 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:34,515 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:34,516 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:34,516 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:34,518 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:34,519 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:34,522 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:34,522 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:34,524 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:34,524 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:34,525 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:34,528 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:34,528 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:34,529 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:34,529 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:34,529 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:34,530 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:34,532 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:34,534 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:34,559 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:34,560 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:34,561 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:34,561 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:34,561 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:34,562 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:34,562 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:34,562 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:34,562 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:34,562 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:34,563 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:34,563 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:34,563 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:34,563 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:34,563 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:34,563 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:34,564 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:34,564 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:34,564 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:34,564 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:34,564 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:34,565 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:34,565 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:34,565 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:34,565 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:34,565 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:34,566 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:34,566 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:34,566 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 11:20:34,600 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:34,617 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:34,621 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:34,623 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:34,623 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:34,624 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_two_index_07_true-unreach-call.i [2019-05-23 11:20:34,691 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27ae7eddd/661ab82dec6d47c8b9be35c7ed49c467/FLAGd63a0cd9e [2019-05-23 11:20:35,148 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:35,148 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_two_index_07_true-unreach-call.i [2019-05-23 11:20:35,154 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27ae7eddd/661ab82dec6d47c8b9be35c7ed49c467/FLAGd63a0cd9e [2019-05-23 11:20:35,525 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27ae7eddd/661ab82dec6d47c8b9be35c7ed49c467 [2019-05-23 11:20:35,534 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:35,536 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:35,537 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:35,537 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:35,541 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:35,542 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,545 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42409953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35, skipping insertion in model container [2019-05-23 11:20:35,545 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,552 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:35,573 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:35,734 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:35,740 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:35,771 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:35,796 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:35,796 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35 WrapperNode [2019-05-23 11:20:35,797 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:35,797 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:35,798 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:35,798 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:35,808 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,822 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,844 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:35,845 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:35,845 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:35,845 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:35,854 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,855 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,856 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,857 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,863 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,868 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,869 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,871 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:35,872 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:35,872 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:35,872 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:35,873 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (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 11:20:36,016 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:20:36,017 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:36,017 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:36,017 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:36,017 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:36,018 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:36,445 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:36,446 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:20:36,447 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:36 BoogieIcfgContainer [2019-05-23 11:20:36,447 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:36,448 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:36,448 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:36,451 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:36,451 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:35" (1/3) ... [2019-05-23 11:20:36,452 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7008008a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:36, skipping insertion in model container [2019-05-23 11:20:36,452 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (2/3) ... [2019-05-23 11:20:36,453 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7008008a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:36, skipping insertion in model container [2019-05-23 11:20:36,453 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:36" (3/3) ... [2019-05-23 11:20:36,455 INFO L146 ILogger]: Analyzing ICFG standard_two_index_07_true-unreach-call.i [2019-05-23 11:20:36,463 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:36,470 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:36,487 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:36,517 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:36,518 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:36,518 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:36,518 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:36,518 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:36,518 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:36,519 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:36,519 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:36,519 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:36,535 INFO L146 ILogger]: Start isEmpty. Operand 43 states. [2019-05-23 11:20:36,542 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:36,542 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:36,543 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 11:20:36,546 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:36,551 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:36,552 INFO L146 ILogger]: Analyzing trace with hash -1541380129, now seen corresponding path program 1 times [2019-05-23 11:20:36,553 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:36,554 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:36,593 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:36,593 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:36,594 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:36,627 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:36,666 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 11:20:36,669 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:36,669 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:36,673 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:36,686 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:36,687 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:36,689 INFO L146 ILogger]: Start difference. First operand 43 states. Second operand 2 states. [2019-05-23 11:20:36,706 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:36,707 INFO L146 ILogger]: Finished difference Result 73 states and 83 transitions. [2019-05-23 11:20:36,707 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:36,708 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:20:36,708 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:36,717 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:20:36,717 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:20:36,722 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 11:20:36,737 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:20:36,750 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:20:36,751 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:20:36,752 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:20:36,753 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 21 [2019-05-23 11:20:36,754 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:36,754 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:20:36,754 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:36,754 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:20:36,755 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:36,755 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:36,755 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 11:20:36,756 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:36,756 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:36,756 INFO L146 ILogger]: Analyzing trace with hash 805843927, now seen corresponding path program 1 times [2019-05-23 11:20:36,756 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:36,757 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:36,758 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:36,758 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:36,758 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:36,776 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:36,827 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 11:20:36,828 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:36,828 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:36,829 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:36,830 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:36,832 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:36,832 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2019-05-23 11:20:36,926 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:36,926 INFO L146 ILogger]: Finished difference Result 62 states and 66 transitions. [2019-05-23 11:20:36,927 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:36,928 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:20:36,928 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:36,929 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:20:36,929 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:20:36,931 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 11:20:36,931 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:20:36,935 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-05-23 11:20:36,936 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:20:36,937 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-05-23 11:20:36,937 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 21 [2019-05-23 11:20:36,937 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:36,937 INFO L146 ILogger]: Abstraction has 36 states and 38 transitions. [2019-05-23 11:20:36,937 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:36,938 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 38 transitions. [2019-05-23 11:20:36,938 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:20:36,939 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:36,939 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 11:20:36,939 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:36,939 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:36,940 INFO L146 ILogger]: Analyzing trace with hash 1928914446, now seen corresponding path program 1 times [2019-05-23 11:20:36,940 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:36,940 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:36,941 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:36,941 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:36,941 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:36,958 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:36,999 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 11:20:36,999 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:36,999 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:37,000 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:37,000 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:37,001 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:37,001 INFO L146 ILogger]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2019-05-23 11:20:37,118 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:37,119 INFO L146 ILogger]: Finished difference Result 68 states and 71 transitions. [2019-05-23 11:20:37,119 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:37,120 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 26 [2019-05-23 11:20:37,120 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:37,121 INFO L146 ILogger]: With dead ends: 68 [2019-05-23 11:20:37,121 INFO L146 ILogger]: Without dead ends: 53 [2019-05-23 11:20:37,122 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 11:20:37,122 INFO L146 ILogger]: Start minimizeSevpa. Operand 53 states. [2019-05-23 11:20:37,126 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 53 to 37. [2019-05-23 11:20:37,126 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:20:37,127 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-05-23 11:20:37,128 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 26 [2019-05-23 11:20:37,128 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:37,128 INFO L146 ILogger]: Abstraction has 37 states and 39 transitions. [2019-05-23 11:20:37,128 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:37,129 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 39 transitions. [2019-05-23 11:20:37,130 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:20:37,130 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:37,130 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 11:20:37,130 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:37,131 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:37,131 INFO L146 ILogger]: Analyzing trace with hash 876855147, now seen corresponding path program 1 times [2019-05-23 11:20:37,131 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:37,131 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:37,133 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,133 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:37,133 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,156 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,268 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 11:20:37,269 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:37,269 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 11:20:37,285 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:37,315 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,317 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:37,323 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:37,358 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 11:20:37,379 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:37,379 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:37,380 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:37,380 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:37,380 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:37,381 INFO L146 ILogger]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2019-05-23 11:20:37,483 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:37,484 INFO L146 ILogger]: Finished difference Result 85 states and 89 transitions. [2019-05-23 11:20:37,484 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:37,484 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 32 [2019-05-23 11:20:37,485 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:37,485 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:20:37,486 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:20:37,486 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 11:20:37,487 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:20:37,491 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 42. [2019-05-23 11:20:37,491 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:20:37,492 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-05-23 11:20:37,492 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2019-05-23 11:20:37,492 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:37,492 INFO L146 ILogger]: Abstraction has 42 states and 44 transitions. [2019-05-23 11:20:37,493 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:37,493 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 44 transitions. [2019-05-23 11:20:37,494 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:20:37,494 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:37,494 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 11:20:37,494 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:37,495 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:37,495 INFO L146 ILogger]: Analyzing trace with hash -411413292, now seen corresponding path program 2 times [2019-05-23 11:20:37,495 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:37,495 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:37,496 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,496 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:37,497 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,513 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,660 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 11:20:37,661 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:37,661 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 11:20:37,678 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:37,738 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:37,738 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,739 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:37,741 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:37,847 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 11:20:37,877 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:37,877 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:20:37,877 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:20:37,878 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:20:37,878 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:37,878 INFO L146 ILogger]: Start difference. First operand 42 states and 44 transitions. Second operand 6 states. [2019-05-23 11:20:38,191 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:38,191 INFO L146 ILogger]: Finished difference Result 90 states and 94 transitions. [2019-05-23 11:20:38,195 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:38,195 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 37 [2019-05-23 11:20:38,196 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:38,196 INFO L146 ILogger]: With dead ends: 90 [2019-05-23 11:20:38,197 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:20:38,197 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 11:20:38,198 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:20:38,203 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 47. [2019-05-23 11:20:38,203 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:20:38,204 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2019-05-23 11:20:38,204 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 37 [2019-05-23 11:20:38,204 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:38,205 INFO L146 ILogger]: Abstraction has 47 states and 49 transitions. [2019-05-23 11:20:38,205 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:20:38,205 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 49 transitions. [2019-05-23 11:20:38,206 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:20:38,206 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:38,206 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 11:20:38,207 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:38,207 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:38,207 INFO L146 ILogger]: Analyzing trace with hash -1153058549, now seen corresponding path program 3 times [2019-05-23 11:20:38,207 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:38,207 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:38,208 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,209 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:38,209 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,229 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:38,372 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 11:20:38,373 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:38,373 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 11:20:38,389 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:38,409 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:20:38,409 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:38,409 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:38,411 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:38,444 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 11:20:38,466 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:38,467 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2019-05-23 11:20:38,467 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:20:38,467 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:20:38,468 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:38,468 INFO L146 ILogger]: Start difference. First operand 47 states and 49 transitions. Second operand 7 states. [2019-05-23 11:20:38,727 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:38,728 INFO L146 ILogger]: Finished difference Result 119 states and 125 transitions. [2019-05-23 11:20:38,729 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:20:38,729 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 42 [2019-05-23 11:20:38,729 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:38,730 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:20:38,730 INFO L146 ILogger]: Without dead ends: 96 [2019-05-23 11:20:38,731 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 11:20:38,732 INFO L146 ILogger]: Start minimizeSevpa. Operand 96 states. [2019-05-23 11:20:38,736 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 96 to 63. [2019-05-23 11:20:38,737 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:20:38,737 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2019-05-23 11:20:38,738 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 42 [2019-05-23 11:20:38,738 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:38,738 INFO L146 ILogger]: Abstraction has 63 states and 65 transitions. [2019-05-23 11:20:38,738 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:20:38,738 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 65 transitions. [2019-05-23 11:20:38,739 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:20:38,739 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:38,739 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 11:20:38,740 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:38,740 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:38,740 INFO L146 ILogger]: Analyzing trace with hash 1070488136, now seen corresponding path program 4 times [2019-05-23 11:20:38,740 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:38,740 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:38,741 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,741 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:38,742 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,762 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:38,945 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 11:20:38,945 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:38,946 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 11:20:38,968 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:39,005 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:39,006 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,007 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:39,009 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:39,024 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 11:20:39,044 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:39,045 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:20:39,045 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:39,045 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:39,046 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:39,046 INFO L146 ILogger]: Start difference. First operand 63 states and 65 transitions. Second operand 9 states. [2019-05-23 11:20:39,175 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:39,175 INFO L146 ILogger]: Finished difference Result 113 states and 117 transitions. [2019-05-23 11:20:39,175 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:39,175 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 58 [2019-05-23 11:20:39,176 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:39,177 INFO L146 ILogger]: With dead ends: 113 [2019-05-23 11:20:39,177 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:20:39,178 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 11:20:39,179 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:20:39,184 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 68. [2019-05-23 11:20:39,184 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:20:39,185 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2019-05-23 11:20:39,185 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 58 [2019-05-23 11:20:39,185 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:39,185 INFO L146 ILogger]: Abstraction has 68 states and 70 transitions. [2019-05-23 11:20:39,186 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:39,186 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 70 transitions. [2019-05-23 11:20:39,187 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 64 [2019-05-23 11:20:39,187 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:39,187 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 11:20:39,187 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:39,187 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:39,188 INFO L146 ILogger]: Analyzing trace with hash 1820626545, now seen corresponding path program 5 times [2019-05-23 11:20:39,188 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:39,188 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:39,188 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:39,189 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:39,189 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:39,208 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,341 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 11:20:39,342 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:39,342 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 11:20:39,352 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:39,425 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:20:39,425 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,426 INFO L146 ILogger]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:39,429 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:39,499 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 11:20:39,518 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:39,519 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2019-05-23 11:20:39,519 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:20:39,519 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:20:39,520 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:39,521 INFO L146 ILogger]: Start difference. First operand 68 states and 70 transitions. Second operand 11 states. [2019-05-23 11:20:39,925 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:39,926 INFO L146 ILogger]: Finished difference Result 164 states and 171 transitions. [2019-05-23 11:20:39,926 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:20:39,926 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 63 [2019-05-23 11:20:39,927 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:39,931 INFO L146 ILogger]: With dead ends: 164 [2019-05-23 11:20:39,931 INFO L146 ILogger]: Without dead ends: 135 [2019-05-23 11:20:39,932 INFO L146 ILogger]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:39,932 INFO L146 ILogger]: Start minimizeSevpa. Operand 135 states. [2019-05-23 11:20:39,939 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 135 to 89. [2019-05-23 11:20:39,939 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:20:39,940 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2019-05-23 11:20:39,940 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 63 [2019-05-23 11:20:39,941 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:39,941 INFO L146 ILogger]: Abstraction has 89 states and 91 transitions. [2019-05-23 11:20:39,941 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:20:39,941 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 91 transitions. [2019-05-23 11:20:39,943 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 85 [2019-05-23 11:20:39,943 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:39,943 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 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 11:20:39,943 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:39,944 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:39,944 INFO L146 ILogger]: Analyzing trace with hash 2137983845, now seen corresponding path program 6 times [2019-05-23 11:20:39,944 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:39,944 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:39,945 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:39,945 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:39,945 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:39,969 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:40,353 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:40,353 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:40,354 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 11:20:40,365 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:40,490 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:40,490 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:40,492 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:40,495 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:40,876 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-05-23 11:20:40,896 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:40,896 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 14 [2019-05-23 11:20:40,897 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:20:40,897 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:20:40,897 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:40,897 INFO L146 ILogger]: Start difference. First operand 89 states and 91 transitions. Second operand 14 states. [2019-05-23 11:20:41,121 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:41,121 INFO L146 ILogger]: Finished difference Result 204 states and 211 transitions. [2019-05-23 11:20:41,122 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:41,122 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 84 [2019-05-23 11:20:41,123 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:41,124 INFO L146 ILogger]: With dead ends: 204 [2019-05-23 11:20:41,124 INFO L146 ILogger]: Without dead ends: 169 [2019-05-23 11:20:41,125 INFO L146 ILogger]: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:41,125 INFO L146 ILogger]: Start minimizeSevpa. Operand 169 states. [2019-05-23 11:20:41,132 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 169 to 110. [2019-05-23 11:20:41,132 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:20:41,134 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2019-05-23 11:20:41,134 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 84 [2019-05-23 11:20:41,135 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:41,135 INFO L146 ILogger]: Abstraction has 110 states and 112 transitions. [2019-05-23 11:20:41,135 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:20:41,135 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 112 transitions. [2019-05-23 11:20:41,136 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:20:41,137 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:41,137 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 11:20:41,137 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:41,137 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:41,138 INFO L146 ILogger]: Analyzing trace with hash -1782519285, now seen corresponding path program 7 times [2019-05-23 11:20:41,138 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:41,138 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:41,139 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:41,139 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:41,139 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:41,164 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:41,516 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 11:20:41,516 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:41,517 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 11:20:41,529 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:41,565 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:41,566 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:20:41,570 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:41,639 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 11:20:41,659 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:41,659 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:20:41,660 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:20:41,660 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:20:41,661 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:41,661 INFO L146 ILogger]: Start difference. First operand 110 states and 112 transitions. Second operand 16 states. [2019-05-23 11:20:41,942 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:41,942 INFO L146 ILogger]: Finished difference Result 185 states and 189 transitions. [2019-05-23 11:20:41,943 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:20:41,943 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 105 [2019-05-23 11:20:41,944 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:41,947 INFO L146 ILogger]: With dead ends: 185 [2019-05-23 11:20:41,947 INFO L146 ILogger]: Without dead ends: 144 [2019-05-23 11:20:41,948 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:41,948 INFO L146 ILogger]: Start minimizeSevpa. Operand 144 states. [2019-05-23 11:20:41,956 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 144 to 115. [2019-05-23 11:20:41,956 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:20:41,957 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2019-05-23 11:20:41,958 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 105 [2019-05-23 11:20:41,958 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:41,958 INFO L146 ILogger]: Abstraction has 115 states and 117 transitions. [2019-05-23 11:20:41,958 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:20:41,958 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 117 transitions. [2019-05-23 11:20:41,961 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:20:41,961 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:41,961 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 11:20:41,961 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:41,962 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:41,962 INFO L146 ILogger]: Analyzing trace with hash 1755325122, now seen corresponding path program 8 times [2019-05-23 11:20:41,962 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:41,962 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:41,963 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:41,963 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:41,963 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:41,999 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:42,892 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 11:20:42,892 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:42,893 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 11:20:42,904 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:42,932 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:42,932 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:42,933 INFO L146 ILogger]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:20:42,938 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:42,974 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 11:20:42,994 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:42,994 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:20:42,995 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:20:42,995 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:20:42,996 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:42,996 INFO L146 ILogger]: Start difference. First operand 115 states and 117 transitions. Second operand 17 states. [2019-05-23 11:20:43,184 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:43,185 INFO L146 ILogger]: Finished difference Result 190 states and 194 transitions. [2019-05-23 11:20:43,185 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:20:43,185 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 110 [2019-05-23 11:20:43,186 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:43,187 INFO L146 ILogger]: With dead ends: 190 [2019-05-23 11:20:43,187 INFO L146 ILogger]: Without dead ends: 149 [2019-05-23 11:20:43,188 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:43,188 INFO L146 ILogger]: Start minimizeSevpa. Operand 149 states. [2019-05-23 11:20:43,192 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 149 to 120. [2019-05-23 11:20:43,192 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:20:43,193 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2019-05-23 11:20:43,193 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 110 [2019-05-23 11:20:43,194 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:43,194 INFO L146 ILogger]: Abstraction has 120 states and 122 transitions. [2019-05-23 11:20:43,194 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:20:43,194 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 122 transitions. [2019-05-23 11:20:43,195 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:20:43,196 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:43,196 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 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 11:20:43,196 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:43,196 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:43,197 INFO L146 ILogger]: Analyzing trace with hash 1355465835, now seen corresponding path program 9 times [2019-05-23 11:20:43,197 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:43,197 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:43,198 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:43,198 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:43,198 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:43,215 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,444 INFO L146 ILogger]: Checked inductivity of 509 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:43,444 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:43,444 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 11:20:43,462 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:43,541 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:20:43,541 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,542 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:43,544 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:43,649 INFO L146 ILogger]: Checked inductivity of 509 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2019-05-23 11:20:43,670 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:43,670 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 20 [2019-05-23 11:20:43,670 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:20:43,671 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:20:43,671 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:43,671 INFO L146 ILogger]: Start difference. First operand 120 states and 122 transitions. Second operand 20 states. [2019-05-23 11:20:43,913 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:43,914 INFO L146 ILogger]: Finished difference Result 259 states and 267 transitions. [2019-05-23 11:20:43,914 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:20:43,914 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 115 [2019-05-23 11:20:43,914 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:43,916 INFO L146 ILogger]: With dead ends: 259 [2019-05-23 11:20:43,916 INFO L146 ILogger]: Without dead ends: 218 [2019-05-23 11:20:43,917 INFO L146 ILogger]: 0 DeclaredPredicates, 131 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:43,918 INFO L146 ILogger]: Start minimizeSevpa. Operand 218 states. [2019-05-23 11:20:43,928 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 218 to 146. [2019-05-23 11:20:43,929 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:20:43,930 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2019-05-23 11:20:43,930 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 115 [2019-05-23 11:20:43,930 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:43,930 INFO L146 ILogger]: Abstraction has 146 states and 148 transitions. [2019-05-23 11:20:43,931 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:20:43,931 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 148 transitions. [2019-05-23 11:20:43,932 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 142 [2019-05-23 11:20:43,932 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:43,932 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 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 11:20:43,932 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:43,933 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:43,935 INFO L146 ILogger]: Analyzing trace with hash 412573896, now seen corresponding path program 10 times [2019-05-23 11:20:43,935 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:43,935 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:43,936 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:43,936 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:43,936 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:43,966 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:44,405 INFO L146 ILogger]: Checked inductivity of 848 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:44,405 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:44,405 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 11:20:44,417 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:44,852 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:44,852 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:44,855 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:44,858 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:44,971 INFO L146 ILogger]: Checked inductivity of 848 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2019-05-23 11:20:44,999 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:45,000 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 8] total 24 [2019-05-23 11:20:45,000 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:20:45,000 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:20:45,001 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:45,001 INFO L146 ILogger]: Start difference. First operand 146 states and 148 transitions. Second operand 24 states. [2019-05-23 11:20:45,350 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:45,350 INFO L146 ILogger]: Finished difference Result 304 states and 312 transitions. [2019-05-23 11:20:45,351 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:20:45,351 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 141 [2019-05-23 11:20:45,352 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:45,353 INFO L146 ILogger]: With dead ends: 304 [2019-05-23 11:20:45,353 INFO L146 ILogger]: Without dead ends: 257 [2019-05-23 11:20:45,354 INFO L146 ILogger]: 0 DeclaredPredicates, 161 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:45,355 INFO L146 ILogger]: Start minimizeSevpa. Operand 257 states. [2019-05-23 11:20:45,359 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 257 to 172. [2019-05-23 11:20:45,359 INFO L146 ILogger]: Start removeUnreachable. Operand 172 states. [2019-05-23 11:20:45,360 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2019-05-23 11:20:45,360 INFO L146 ILogger]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 141 [2019-05-23 11:20:45,360 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:45,360 INFO L146 ILogger]: Abstraction has 172 states and 174 transitions. [2019-05-23 11:20:45,360 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:20:45,360 INFO L146 ILogger]: Start isEmpty. Operand 172 states and 174 transitions. [2019-05-23 11:20:45,362 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:20:45,362 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:45,362 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 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 11:20:45,362 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:45,363 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:45,363 INFO L146 ILogger]: Analyzing trace with hash -851700891, now seen corresponding path program 11 times [2019-05-23 11:20:45,363 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:45,363 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:45,364 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,364 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:45,364 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,383 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:45,782 INFO L146 ILogger]: Checked inductivity of 1273 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:45,783 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:45,783 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 11:20:45,792 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:47,094 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2019-05-23 11:20:47,094 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,098 INFO L146 ILogger]: Trace formula consists of 258 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:20:47,100 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:47,155 INFO L146 ILogger]: Checked inductivity of 1273 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:47,176 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:47,176 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-05-23 11:20:47,176 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:20:47,177 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:20:47,177 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:47,177 INFO L146 ILogger]: Start difference. First operand 172 states and 174 transitions. Second operand 26 states. [2019-05-23 11:20:47,484 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:47,484 INFO L146 ILogger]: Finished difference Result 285 states and 289 transitions. [2019-05-23 11:20:47,485 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:20:47,485 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 167 [2019-05-23 11:20:47,485 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:47,487 INFO L146 ILogger]: With dead ends: 285 [2019-05-23 11:20:47,487 INFO L146 ILogger]: Without dead ends: 232 [2019-05-23 11:20:47,488 INFO L146 ILogger]: 0 DeclaredPredicates, 191 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:47,488 INFO L146 ILogger]: Start minimizeSevpa. Operand 232 states. [2019-05-23 11:20:47,492 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 232 to 177. [2019-05-23 11:20:47,492 INFO L146 ILogger]: Start removeUnreachable. Operand 177 states. [2019-05-23 11:20:47,493 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2019-05-23 11:20:47,493 INFO L146 ILogger]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 167 [2019-05-23 11:20:47,493 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:47,493 INFO L146 ILogger]: Abstraction has 177 states and 179 transitions. [2019-05-23 11:20:47,493 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:20:47,493 INFO L146 ILogger]: Start isEmpty. Operand 177 states and 179 transitions. [2019-05-23 11:20:47,495 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 173 [2019-05-23 11:20:47,495 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:47,495 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 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 11:20:47,496 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:47,496 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:47,496 INFO L146 ILogger]: Analyzing trace with hash -731851300, now seen corresponding path program 12 times [2019-05-23 11:20:47,496 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:47,496 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:47,497 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:47,497 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:47,497 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:47,515 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,925 INFO L146 ILogger]: Checked inductivity of 1384 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:47,925 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:47,926 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 11:20:47,934 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:48,798 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:20:48,799 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:48,801 INFO L146 ILogger]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:48,803 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:48,965 INFO L146 ILogger]: Checked inductivity of 1384 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2019-05-23 11:20:48,985 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:48,985 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 9] total 29 [2019-05-23 11:20:48,985 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:20:48,986 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:20:48,986 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:20:48,987 INFO L146 ILogger]: Start difference. First operand 177 states and 179 transitions. Second operand 29 states. [2019-05-23 11:20:49,845 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:49,846 INFO L146 ILogger]: Finished difference Result 354 states and 362 transitions. [2019-05-23 11:20:49,846 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:20:49,847 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 172 [2019-05-23 11:20:49,847 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:49,849 INFO L146 ILogger]: With dead ends: 354 [2019-05-23 11:20:49,849 INFO L146 ILogger]: Without dead ends: 301 [2019-05-23 11:20:49,850 INFO L146 ILogger]: 0 DeclaredPredicates, 197 GetRequests, 170 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 11:20:49,851 INFO L146 ILogger]: Start minimizeSevpa. Operand 301 states. [2019-05-23 11:20:49,855 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 301 to 203. [2019-05-23 11:20:49,856 INFO L146 ILogger]: Start removeUnreachable. Operand 203 states. [2019-05-23 11:20:49,857 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2019-05-23 11:20:49,857 INFO L146 ILogger]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 172 [2019-05-23 11:20:49,857 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:49,857 INFO L146 ILogger]: Abstraction has 203 states and 205 transitions. [2019-05-23 11:20:49,858 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:20:49,858 INFO L146 ILogger]: Start isEmpty. Operand 203 states and 205 transitions. [2019-05-23 11:20:49,860 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 199 [2019-05-23 11:20:49,860 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:49,860 INFO L146 ILogger]: trace histogram [27, 27, 27, 27, 27, 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 11:20:49,861 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:49,861 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:49,861 INFO L146 ILogger]: Analyzing trace with hash -519030791, now seen corresponding path program 13 times [2019-05-23 11:20:49,861 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:49,862 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:49,862 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,862 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:49,862 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,882 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,413 INFO L146 ILogger]: Checked inductivity of 1915 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:50,413 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:50,413 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 11:20:50,422 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:50,476 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,478 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:20:50,481 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:50,586 INFO L146 ILogger]: Checked inductivity of 1915 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:50,614 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:50,615 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-05-23 11:20:50,615 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:20:50,615 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:20:50,616 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:50,616 INFO L146 ILogger]: Start difference. First operand 203 states and 205 transitions. Second operand 31 states. [2019-05-23 11:20:51,167 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:51,168 INFO L146 ILogger]: Finished difference Result 322 states and 326 transitions. [2019-05-23 11:20:51,168 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:20:51,168 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 198 [2019-05-23 11:20:51,168 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:51,170 INFO L146 ILogger]: With dead ends: 322 [2019-05-23 11:20:51,170 INFO L146 ILogger]: Without dead ends: 263 [2019-05-23 11:20:51,171 INFO L146 ILogger]: 0 DeclaredPredicates, 227 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:51,172 INFO L146 ILogger]: Start minimizeSevpa. Operand 263 states. [2019-05-23 11:20:51,175 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 263 to 208. [2019-05-23 11:20:51,176 INFO L146 ILogger]: Start removeUnreachable. Operand 208 states. [2019-05-23 11:20:51,176 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2019-05-23 11:20:51,177 INFO L146 ILogger]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 198 [2019-05-23 11:20:51,177 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:51,177 INFO L146 ILogger]: Abstraction has 208 states and 210 transitions. [2019-05-23 11:20:51,177 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:20:51,177 INFO L146 ILogger]: Start isEmpty. Operand 208 states and 210 transitions. [2019-05-23 11:20:51,178 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 204 [2019-05-23 11:20:51,178 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:51,179 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 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 11:20:51,179 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:51,179 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:51,179 INFO L146 ILogger]: Analyzing trace with hash -733944158, now seen corresponding path program 14 times [2019-05-23 11:20:51,179 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:51,180 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:51,180 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:51,180 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:51,180 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:51,201 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:51,779 INFO L146 ILogger]: Checked inductivity of 2051 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:51,779 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:51,779 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 11:20:51,787 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:51,842 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:51,842 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:51,843 INFO L146 ILogger]: Trace formula consists of 309 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:20:51,846 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:51,942 INFO L146 ILogger]: Checked inductivity of 2051 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:51,963 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:51,963 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:20:51,964 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:20:51,964 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:20:51,964 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:20:51,965 INFO L146 ILogger]: Start difference. First operand 208 states and 210 transitions. Second operand 32 states. [2019-05-23 11:20:52,285 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:52,286 INFO L146 ILogger]: Finished difference Result 327 states and 331 transitions. [2019-05-23 11:20:52,286 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:20:52,286 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 203 [2019-05-23 11:20:52,287 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:52,288 INFO L146 ILogger]: With dead ends: 327 [2019-05-23 11:20:52,288 INFO L146 ILogger]: Without dead ends: 268 [2019-05-23 11:20:52,290 INFO L146 ILogger]: 0 DeclaredPredicates, 233 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:20:52,290 INFO L146 ILogger]: Start minimizeSevpa. Operand 268 states. [2019-05-23 11:20:52,295 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 268 to 213. [2019-05-23 11:20:52,295 INFO L146 ILogger]: Start removeUnreachable. Operand 213 states. [2019-05-23 11:20:52,296 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2019-05-23 11:20:52,296 INFO L146 ILogger]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 203 [2019-05-23 11:20:52,296 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:52,296 INFO L146 ILogger]: Abstraction has 213 states and 215 transitions. [2019-05-23 11:20:52,297 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:20:52,297 INFO L146 ILogger]: Start isEmpty. Operand 213 states and 215 transitions. [2019-05-23 11:20:52,298 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:20:52,298 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:52,298 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 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 11:20:52,298 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:52,298 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:52,299 INFO L146 ILogger]: Analyzing trace with hash 1789917593, now seen corresponding path program 15 times [2019-05-23 11:20:52,299 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:52,299 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:52,300 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:52,300 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:52,300 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:52,319 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:53,521 INFO L146 ILogger]: Checked inductivity of 2192 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:53,522 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:53,522 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 11:20:53,530 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:53,712 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:20:53,712 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:53,713 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:53,717 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:54,032 INFO L146 ILogger]: Checked inductivity of 2192 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2019-05-23 11:20:54,052 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:54,052 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 10] total 35 [2019-05-23 11:20:54,053 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:20:54,053 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:20:54,054 INFO L146 ILogger]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:20:54,054 INFO L146 ILogger]: Start difference. First operand 213 states and 215 transitions. Second operand 35 states. [2019-05-23 11:20:54,999 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:54,999 INFO L146 ILogger]: Finished difference Result 409 states and 417 transitions. [2019-05-23 11:20:55,000 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:20:55,000 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 208 [2019-05-23 11:20:55,000 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:55,002 INFO L146 ILogger]: With dead ends: 409 [2019-05-23 11:20:55,003 INFO L146 ILogger]: Without dead ends: 350 [2019-05-23 11:20:55,004 INFO L146 ILogger]: 0 DeclaredPredicates, 239 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:20:55,004 INFO L146 ILogger]: Start minimizeSevpa. Operand 350 states. [2019-05-23 11:20:55,009 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 350 to 239. [2019-05-23 11:20:55,009 INFO L146 ILogger]: Start removeUnreachable. Operand 239 states. [2019-05-23 11:20:55,010 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 239 states to 239 states and 241 transitions. [2019-05-23 11:20:55,010 INFO L146 ILogger]: Start accepts. Automaton has 239 states and 241 transitions. Word has length 208 [2019-05-23 11:20:55,010 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:55,011 INFO L146 ILogger]: Abstraction has 239 states and 241 transitions. [2019-05-23 11:20:55,011 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:20:55,011 INFO L146 ILogger]: Start isEmpty. Operand 239 states and 241 transitions. [2019-05-23 11:20:55,012 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 235 [2019-05-23 11:20:55,012 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:55,012 INFO L146 ILogger]: trace histogram [33, 33, 33, 33, 33, 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 11:20:55,013 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:55,013 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:55,013 INFO L146 ILogger]: Analyzing trace with hash -1653196298, now seen corresponding path program 16 times [2019-05-23 11:20:55,013 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:55,013 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:55,014 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:55,014 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:55,014 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:55,037 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:55,685 INFO L146 ILogger]: Checked inductivity of 2849 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:55,685 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:55,685 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:20:55,694 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:57,025 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:57,026 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:57,030 INFO L146 ILogger]: Trace formula consists of 353 conjuncts, 35 conjunts are in the unsatisfiable core [2019-05-23 11:20:57,034 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:57,096 INFO L146 ILogger]: Checked inductivity of 2849 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:57,117 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:57,118 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2019-05-23 11:20:57,118 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:20:57,118 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:20:57,119 INFO L146 ILogger]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:20:57,119 INFO L146 ILogger]: Start difference. First operand 239 states and 241 transitions. Second operand 37 states. [2019-05-23 11:20:57,490 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:57,490 INFO L146 ILogger]: Finished difference Result 377 states and 381 transitions. [2019-05-23 11:20:57,491 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:20:57,491 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 234 [2019-05-23 11:20:57,491 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:57,493 INFO L146 ILogger]: With dead ends: 377 [2019-05-23 11:20:57,493 INFO L146 ILogger]: Without dead ends: 312 [2019-05-23 11:20:57,494 INFO L146 ILogger]: 0 DeclaredPredicates, 269 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:20:57,495 INFO L146 ILogger]: Start minimizeSevpa. Operand 312 states. [2019-05-23 11:20:57,499 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 312 to 244. [2019-05-23 11:20:57,499 INFO L146 ILogger]: Start removeUnreachable. Operand 244 states. [2019-05-23 11:20:57,500 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 244 states to 244 states and 246 transitions. [2019-05-23 11:20:57,500 INFO L146 ILogger]: Start accepts. Automaton has 244 states and 246 transitions. Word has length 234 [2019-05-23 11:20:57,500 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:57,500 INFO L146 ILogger]: Abstraction has 244 states and 246 transitions. [2019-05-23 11:20:57,501 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:20:57,501 INFO L146 ILogger]: Start isEmpty. Operand 244 states and 246 transitions. [2019-05-23 11:20:57,502 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 240 [2019-05-23 11:20:57,502 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:57,502 INFO L146 ILogger]: trace histogram [34, 34, 34, 34, 34, 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 11:20:57,502 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:57,503 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:57,503 INFO L146 ILogger]: Analyzing trace with hash -1003321313, now seen corresponding path program 17 times [2019-05-23 11:20:57,503 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:57,503 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:57,504 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:57,504 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:57,504 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:57,544 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:58,129 INFO L146 ILogger]: Checked inductivity of 3015 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:58,129 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:58,129 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 11:20:58,138 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:46,093 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2019-05-23 11:21:46,094 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:46,113 INFO L146 ILogger]: Trace formula consists of 360 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:21:46,115 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:46,188 INFO L146 ILogger]: Checked inductivity of 3015 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:46,214 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:46,214 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2019-05-23 11:21:46,214 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:21:46,214 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:21:46,215 INFO L146 ILogger]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:21:46,215 INFO L146 ILogger]: Start difference. First operand 244 states and 246 transitions. Second operand 38 states. [2019-05-23 11:21:46,589 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:46,589 INFO L146 ILogger]: Finished difference Result 382 states and 386 transitions. [2019-05-23 11:21:46,589 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:21:46,590 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 239 [2019-05-23 11:21:46,590 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:46,592 INFO L146 ILogger]: With dead ends: 382 [2019-05-23 11:21:46,592 INFO L146 ILogger]: Without dead ends: 317 [2019-05-23 11:21:46,593 INFO L146 ILogger]: 0 DeclaredPredicates, 275 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:21:46,593 INFO L146 ILogger]: Start minimizeSevpa. Operand 317 states. [2019-05-23 11:21:46,597 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 317 to 249. [2019-05-23 11:21:46,598 INFO L146 ILogger]: Start removeUnreachable. Operand 249 states. [2019-05-23 11:21:46,598 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2019-05-23 11:21:46,599 INFO L146 ILogger]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 239 [2019-05-23 11:21:46,599 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:46,599 INFO L146 ILogger]: Abstraction has 249 states and 251 transitions. [2019-05-23 11:21:46,599 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:21:46,599 INFO L146 ILogger]: Start isEmpty. Operand 249 states and 251 transitions. [2019-05-23 11:21:46,600 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 245 [2019-05-23 11:21:46,600 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:46,601 INFO L146 ILogger]: trace histogram [35, 35, 35, 35, 35, 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 11:21:46,601 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:46,601 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:46,601 INFO L146 ILogger]: Analyzing trace with hash -756175978, now seen corresponding path program 18 times [2019-05-23 11:21:46,601 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:46,602 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:46,602 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:46,602 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:46,602 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:46,624 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:47,324 INFO L146 ILogger]: Checked inductivity of 3186 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:47,324 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:47,325 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 11:21:47,334 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE