java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-tiling/revcpyswp2_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:26:21,382 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:26:21,384 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:26:21,399 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:26:21,400 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:26:21,401 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:26:21,402 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:26:21,404 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:26:21,406 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:26:21,407 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:26:21,408 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:26:21,408 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:26:21,409 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:26:21,410 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:26:21,411 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:26:21,412 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:26:21,413 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:26:21,415 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:26:21,417 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:26:21,419 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:26:21,420 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:26:21,421 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:26:21,424 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:26:21,424 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:26:21,424 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:26:21,425 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:26:21,426 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:26:21,427 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:26:21,427 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:26:21,428 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:26:21,429 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:26:21,430 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:26:21,431 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:26:21,431 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:26:21,432 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:26:21,432 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:26:21,432 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:26:21,433 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:26:21,434 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:26:21,434 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:26:21,450 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:26:21,450 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:26:21,451 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:26:21,452 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:26:21,452 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:26:21,452 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:26:21,452 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:26:21,453 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:26:21,453 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:26:21,453 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:26:21,453 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:26:21,453 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:26:21,454 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:26:21,454 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:26:21,454 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:26:21,454 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:26:21,454 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:26:21,455 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:26:21,455 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:26:21,455 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:26:21,455 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:26:21,456 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:26:21,456 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:26:21,456 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:26:21,456 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:26:21,456 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:26:21,457 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:26:21,457 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:26:21,457 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 11:26:21,488 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:26:21,500 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:26:21,504 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:26:21,505 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:26:21,506 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:26:21,507 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/revcpyswp2_true-unreach-call.i [2019-05-23 11:26:21,564 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44c912630/b258c49871b84d81b8d421a3b8c915f5/FLAG8d7c133cf [2019-05-23 11:26:22,020 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:26:22,021 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/revcpyswp2_true-unreach-call.i [2019-05-23 11:26:22,027 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44c912630/b258c49871b84d81b8d421a3b8c915f5/FLAG8d7c133cf [2019-05-23 11:26:22,400 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44c912630/b258c49871b84d81b8d421a3b8c915f5 [2019-05-23 11:26:22,411 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:26:22,413 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:26:22,414 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:22,414 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:26:22,418 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:26:22,421 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:22" (1/1) ... [2019-05-23 11:26:22,424 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535fdb4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22, skipping insertion in model container [2019-05-23 11:26:22,425 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:22" (1/1) ... [2019-05-23 11:26:22,433 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:26:22,462 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:26:22,699 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:22,706 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:26:22,750 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:22,781 INFO L146 ILogger]: Completed translation [2019-05-23 11:26:22,781 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22 WrapperNode [2019-05-23 11:26:22,782 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:22,783 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:22,783 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:26:22,783 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:26:22,790 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22" (1/1) ... [2019-05-23 11:26:22,803 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22" (1/1) ... [2019-05-23 11:26:22,829 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:22,829 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:26:22,829 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:26:22,829 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:26:22,839 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22" (1/1) ... [2019-05-23 11:26:22,840 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22" (1/1) ... [2019-05-23 11:26:22,843 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22" (1/1) ... [2019-05-23 11:26:22,843 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22" (1/1) ... [2019-05-23 11:26:22,943 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22" (1/1) ... [2019-05-23 11:26:22,949 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22" (1/1) ... [2019-05-23 11:26:22,950 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22" (1/1) ... [2019-05-23 11:26:22,953 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:26:22,953 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:26:22,954 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:26:22,954 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:26:22,955 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22" (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 11:26:23,013 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:26:23,013 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:26:23,014 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:26:23,014 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:26:23,014 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:26:23,014 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:26:23,544 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:26:23,544 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:26:23,545 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:23 BoogieIcfgContainer [2019-05-23 11:26:23,546 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:26:23,546 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:26:23,547 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:26:23,550 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:26:23,550 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:26:22" (1/3) ... [2019-05-23 11:26:23,551 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b486e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:23, skipping insertion in model container [2019-05-23 11:26:23,551 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:22" (2/3) ... [2019-05-23 11:26:23,551 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b486e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:23, skipping insertion in model container [2019-05-23 11:26:23,551 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:23" (3/3) ... [2019-05-23 11:26:23,553 INFO L146 ILogger]: Analyzing ICFG revcpyswp2_true-unreach-call.i [2019-05-23 11:26:23,562 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:26:23,570 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:26:23,586 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:26:23,619 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:26:23,620 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:26:23,620 INFO L146 ILogger]: Hoare is true [2019-05-23 11:26:23,620 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:26:23,621 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:26:23,621 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:26:23,621 INFO L146 ILogger]: Difference is false [2019-05-23 11:26:23,622 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:26:23,622 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:26:23,637 INFO L146 ILogger]: Start isEmpty. Operand 77 states. [2019-05-23 11:26:23,645 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:26:23,645 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:23,646 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:23,648 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:23,654 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:23,654 INFO L146 ILogger]: Analyzing trace with hash 1163828085, now seen corresponding path program 1 times [2019-05-23 11:26:23,656 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:23,657 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:23,706 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:23,707 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:23,707 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:23,756 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:23,803 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 11:26:23,806 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:23,806 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:26:23,810 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:26:23,823 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:26:23,824 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:26:23,826 INFO L146 ILogger]: Start difference. First operand 77 states. Second operand 2 states. [2019-05-23 11:26:23,846 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:23,847 INFO L146 ILogger]: Finished difference Result 128 states and 143 transitions. [2019-05-23 11:26:23,847 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:26:23,848 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 30 [2019-05-23 11:26:23,849 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:23,859 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:26:23,860 INFO L146 ILogger]: Without dead ends: 65 [2019-05-23 11:26:23,863 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 11:26:23,880 INFO L146 ILogger]: Start minimizeSevpa. Operand 65 states. [2019-05-23 11:26:23,897 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 65 to 65. [2019-05-23 11:26:23,899 INFO L146 ILogger]: Start removeUnreachable. Operand 65 states. [2019-05-23 11:26:23,901 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2019-05-23 11:26:23,902 INFO L146 ILogger]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 30 [2019-05-23 11:26:23,902 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:23,903 INFO L146 ILogger]: Abstraction has 65 states and 68 transitions. [2019-05-23 11:26:23,903 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:26:23,903 INFO L146 ILogger]: Start isEmpty. Operand 65 states and 68 transitions. [2019-05-23 11:26:23,904 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:26:23,904 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:23,905 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:23,905 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:23,905 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:23,906 INFO L146 ILogger]: Analyzing trace with hash 663176033, now seen corresponding path program 1 times [2019-05-23 11:26:23,906 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:23,906 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:23,907 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:23,907 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:23,907 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:23,938 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:24,047 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 11:26:24,048 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:24,048 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:26:24,050 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:26:24,050 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:26:24,050 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:24,051 INFO L146 ILogger]: Start difference. First operand 65 states and 68 transitions. Second operand 4 states. [2019-05-23 11:26:24,603 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:24,603 INFO L146 ILogger]: Finished difference Result 146 states and 154 transitions. [2019-05-23 11:26:24,604 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:26:24,604 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 30 [2019-05-23 11:26:24,604 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:24,606 INFO L146 ILogger]: With dead ends: 146 [2019-05-23 11:26:24,606 INFO L146 ILogger]: Without dead ends: 107 [2019-05-23 11:26:24,607 INFO L146 ILogger]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:24,608 INFO L146 ILogger]: Start minimizeSevpa. Operand 107 states. [2019-05-23 11:26:24,616 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 107 to 68. [2019-05-23 11:26:24,616 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:26:24,617 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2019-05-23 11:26:24,618 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 30 [2019-05-23 11:26:24,618 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:24,618 INFO L146 ILogger]: Abstraction has 68 states and 71 transitions. [2019-05-23 11:26:24,618 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:26:24,618 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 71 transitions. [2019-05-23 11:26:24,620 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 63 [2019-05-23 11:26:24,620 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:24,620 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:24,621 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:24,621 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:24,621 INFO L146 ILogger]: Analyzing trace with hash 789974908, now seen corresponding path program 1 times [2019-05-23 11:26:24,621 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:24,622 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:24,623 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:24,623 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:24,623 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:24,653 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:24,779 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:26:24,780 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:24,780 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 11:26:24,798 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:24,855 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:24,857 INFO L146 ILogger]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:26:24,865 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:25,020 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:26:25,047 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:25,047 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:26:25,048 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:26:25,049 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:26:25,049 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:26:25,049 INFO L146 ILogger]: Start difference. First operand 68 states and 71 transitions. Second operand 9 states. [2019-05-23 11:26:26,130 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:26,130 INFO L146 ILogger]: Finished difference Result 158 states and 164 transitions. [2019-05-23 11:26:26,131 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:26:26,131 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 62 [2019-05-23 11:26:26,131 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:26,133 INFO L146 ILogger]: With dead ends: 158 [2019-05-23 11:26:26,133 INFO L146 ILogger]: Without dead ends: 117 [2019-05-23 11:26:26,134 INFO L146 ILogger]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:26:26,134 INFO L146 ILogger]: Start minimizeSevpa. Operand 117 states. [2019-05-23 11:26:26,141 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 117 to 78. [2019-05-23 11:26:26,141 INFO L146 ILogger]: Start removeUnreachable. Operand 78 states. [2019-05-23 11:26:26,142 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2019-05-23 11:26:26,142 INFO L146 ILogger]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 62 [2019-05-23 11:26:26,143 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:26,143 INFO L146 ILogger]: Abstraction has 78 states and 81 transitions. [2019-05-23 11:26:26,143 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:26:26,143 INFO L146 ILogger]: Start isEmpty. Operand 78 states and 81 transitions. [2019-05-23 11:26:26,145 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 73 [2019-05-23 11:26:26,145 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:26,145 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:26,145 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:26,146 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:26,146 INFO L146 ILogger]: Analyzing trace with hash 385148066, now seen corresponding path program 2 times [2019-05-23 11:26:26,146 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:26,146 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:26,147 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:26,147 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:26,147 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:26,172 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:26,328 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:26:26,328 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:26,328 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 11:26:26,338 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:26,392 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:26,392 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:26,393 INFO L146 ILogger]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:26:26,397 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:26,513 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:26:26,533 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:26,534 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:26:26,534 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:26:26,534 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:26:26,535 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:26:26,535 INFO L146 ILogger]: Start difference. First operand 78 states and 81 transitions. Second operand 9 states. [2019-05-23 11:26:27,430 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:27,430 INFO L146 ILogger]: Finished difference Result 148 states and 153 transitions. [2019-05-23 11:26:27,431 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:26:27,431 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 72 [2019-05-23 11:26:27,432 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:27,434 INFO L146 ILogger]: With dead ends: 148 [2019-05-23 11:26:27,434 INFO L146 ILogger]: Without dead ends: 120 [2019-05-23 11:26:27,435 INFO L146 ILogger]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:26:27,436 INFO L146 ILogger]: Start minimizeSevpa. Operand 120 states. [2019-05-23 11:26:27,443 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 120 to 89. [2019-05-23 11:26:27,444 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:26:27,445 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2019-05-23 11:26:27,445 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 72 [2019-05-23 11:26:27,446 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:27,449 INFO L146 ILogger]: Abstraction has 89 states and 92 transitions. [2019-05-23 11:26:27,449 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:26:27,449 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 92 transitions. [2019-05-23 11:26:27,451 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 84 [2019-05-23 11:26:27,451 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:27,451 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:27,452 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:27,452 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:27,452 INFO L146 ILogger]: Analyzing trace with hash 1763720652, now seen corresponding path program 3 times [2019-05-23 11:26:27,452 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:27,452 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:27,454 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:27,454 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:27,455 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:27,482 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:27,701 INFO L146 ILogger]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-05-23 11:26:27,702 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:27,702 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 11:26:27,712 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:27,754 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:26:27,755 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:27,755 INFO L146 ILogger]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:26:27,760 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:27,851 INFO L146 ILogger]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-05-23 11:26:27,870 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:27,870 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:26:27,871 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:26:27,871 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:26:27,871 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:26:27,871 INFO L146 ILogger]: Start difference. First operand 89 states and 92 transitions. Second operand 9 states. [2019-05-23 11:26:28,090 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:28,091 INFO L146 ILogger]: Finished difference Result 137 states and 141 transitions. [2019-05-23 11:26:28,091 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:26:28,091 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 83 [2019-05-23 11:26:28,092 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:28,094 INFO L146 ILogger]: With dead ends: 137 [2019-05-23 11:26:28,094 INFO L146 ILogger]: Without dead ends: 122 [2019-05-23 11:26:28,095 INFO L146 ILogger]: 0 DeclaredPredicates, 91 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:26:28,095 INFO L146 ILogger]: Start minimizeSevpa. Operand 122 states. [2019-05-23 11:26:28,102 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 122 to 100. [2019-05-23 11:26:28,103 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:26:28,104 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2019-05-23 11:26:28,104 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 83 [2019-05-23 11:26:28,104 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:28,104 INFO L146 ILogger]: Abstraction has 100 states and 103 transitions. [2019-05-23 11:26:28,105 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:26:28,105 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 103 transitions. [2019-05-23 11:26:28,106 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 95 [2019-05-23 11:26:28,106 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:28,107 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:28,107 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:28,107 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:28,107 INFO L146 ILogger]: Analyzing trace with hash 443328141, now seen corresponding path program 4 times [2019-05-23 11:26:28,108 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:28,108 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:28,108 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,109 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:28,109 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,192 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:28,955 WARN L146 ILogger]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-05-23 11:26:29,575 WARN L146 ILogger]: Spent 192.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2019-05-23 11:26:29,744 WARN L146 ILogger]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2019-05-23 11:26:29,934 WARN L146 ILogger]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2019-05-23 11:26:30,116 WARN L146 ILogger]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2019-05-23 11:26:30,317 WARN L146 ILogger]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2019-05-23 11:26:30,503 WARN L146 ILogger]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2019-05-23 11:26:30,779 WARN L146 ILogger]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2019-05-23 11:26:30,932 WARN L146 ILogger]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 35 [2019-05-23 11:26:31,364 WARN L146 ILogger]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2019-05-23 11:26:31,522 WARN L146 ILogger]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2019-05-23 11:26:31,693 WARN L146 ILogger]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2019-05-23 11:26:31,891 WARN L146 ILogger]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 41 [2019-05-23 11:26:32,173 WARN L146 ILogger]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2019-05-23 11:26:32,406 WARN L146 ILogger]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2019-05-23 11:26:32,829 WARN L146 ILogger]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2019-05-23 11:26:33,257 WARN L146 ILogger]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2019-05-23 11:26:33,447 WARN L146 ILogger]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2019-05-23 11:26:33,652 WARN L146 ILogger]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2019-05-23 11:26:33,896 WARN L146 ILogger]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2019-05-23 11:26:34,244 WARN L146 ILogger]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2019-05-23 11:26:34,474 WARN L146 ILogger]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2019-05-23 11:26:34,690 WARN L146 ILogger]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2019-05-23 11:26:34,888 WARN L146 ILogger]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2019-05-23 11:26:35,147 WARN L146 ILogger]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2019-05-23 11:26:36,092 INFO L146 ILogger]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:36,093 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:36,093 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 11:26:36,103 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:36,147 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:36,147 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:36,149 INFO L146 ILogger]: Trace formula consists of 165 conjuncts, 64 conjunts are in the unsatisfiable core [2019-05-23 11:26:36,154 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:36,260 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:26:36,261 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,270 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,271 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,271 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-05-23 11:26:36,352 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,353 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-05-23 11:26:36,354 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,378 INFO L146 ILogger]: treesize reduction 14, result has 63.2 percent of original size [2019-05-23 11:26:36,378 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,379 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:24 [2019-05-23 11:26:36,476 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,477 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2019-05-23 11:26:36,478 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,489 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,489 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,490 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:25 [2019-05-23 11:26:36,766 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2019-05-23 11:26:36,767 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,787 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,788 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,788 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:51 [2019-05-23 11:26:36,903 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 41 [2019-05-23 11:26:36,904 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,927 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,928 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,928 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:51 [2019-05-23 11:26:37,174 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:37,175 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-05-23 11:26:37,176 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,196 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:37,196 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,197 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:44 [2019-05-23 11:26:37,225 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-05-23 11:26:37,226 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,247 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:37,248 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,249 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:44 [2019-05-23 11:26:38,087 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:38,089 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2019-05-23 11:26:38,089 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:38,111 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:38,111 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:38,112 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:73, output treesize:43 [2019-05-23 11:26:38,251 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2019-05-23 11:26:38,252 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:38,272 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:38,272 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:38,272 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:51 [2019-05-23 11:26:38,615 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-05-23 11:26:38,615 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:38,638 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:38,639 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:38,640 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:62, output treesize:47 [2019-05-23 11:26:38,681 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:38,682 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-05-23 11:26:38,682 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:38,707 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:38,708 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:38,708 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:62, output treesize:44 [2019-05-23 11:26:39,013 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2019-05-23 11:26:39,013 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,034 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:39,035 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,035 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:70 [2019-05-23 11:26:39,203 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2019-05-23 11:26:39,204 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,232 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:39,233 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,233 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:85, output treesize:51 [2019-05-23 11:26:39,798 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:39,799 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-05-23 11:26:39,800 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,822 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:39,823 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,824 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:62, output treesize:47 [2019-05-23 11:26:39,863 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2019-05-23 11:26:39,863 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,898 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:39,899 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,899 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:52, output treesize:33 [2019-05-23 11:26:40,231 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2019-05-23 11:26:40,231 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:40,236 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:40,236 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:40,236 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:3 [2019-05-23 11:26:40,489 INFO L146 ILogger]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:40,508 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:40,508 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 32] total 73 [2019-05-23 11:26:40,509 INFO L146 ILogger]: Interpolant automaton has 73 states [2019-05-23 11:26:40,509 INFO L146 ILogger]: Constructing interpolant automaton starting with 73 interpolants. [2019-05-23 11:26:40,511 INFO L146 ILogger]: CoverageRelationStatistics Valid=607, Invalid=4649, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:26:40,511 INFO L146 ILogger]: Start difference. First operand 100 states and 103 transitions. Second operand 73 states. [2019-05-23 11:26:43,004 WARN L146 ILogger]: Spent 128.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 49 [2019-05-23 11:26:43,711 WARN L146 ILogger]: Spent 227.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63 [2019-05-23 11:26:44,043 WARN L146 ILogger]: Spent 196.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-05-23 11:26:44,615 WARN L146 ILogger]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-05-23 11:26:45,157 WARN L146 ILogger]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 45 [2019-05-23 11:26:45,443 WARN L146 ILogger]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2019-05-23 11:26:45,802 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2019-05-23 11:26:46,480 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2019-05-23 11:26:46,858 WARN L146 ILogger]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2019-05-23 11:26:47,057 WARN L146 ILogger]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2019-05-23 11:26:47,333 WARN L146 ILogger]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2019-05-23 11:26:48,767 WARN L146 ILogger]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-05-23 11:26:49,692 WARN L146 ILogger]: Spent 170.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 62 [2019-05-23 11:26:50,146 WARN L146 ILogger]: Spent 108.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2019-05-23 11:26:50,629 WARN L146 ILogger]: Spent 180.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 60 [2019-05-23 11:26:50,952 WARN L146 ILogger]: Spent 159.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 58 [2019-05-23 11:26:52,042 WARN L146 ILogger]: Spent 118.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2019-05-23 11:26:52,909 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 50 [2019-05-23 11:26:54,495 WARN L146 ILogger]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-05-23 11:26:56,310 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:56,310 INFO L146 ILogger]: Finished difference Result 307 states and 317 transitions. [2019-05-23 11:26:56,310 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2019-05-23 11:26:56,310 INFO L146 ILogger]: Start accepts. Automaton has 73 states. Word has length 94 [2019-05-23 11:26:56,311 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:56,313 INFO L146 ILogger]: With dead ends: 307 [2019-05-23 11:26:56,313 INFO L146 ILogger]: Without dead ends: 305 [2019-05-23 11:26:56,319 INFO L146 ILogger]: 0 DeclaredPredicates, 238 GetRequests, 65 SyntacticMatches, 10 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8123 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=4102, Invalid=22958, Unknown=0, NotChecked=0, Total=27060 [2019-05-23 11:26:56,320 INFO L146 ILogger]: Start minimizeSevpa. Operand 305 states. [2019-05-23 11:26:56,336 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 305 to 224. [2019-05-23 11:26:56,336 INFO L146 ILogger]: Start removeUnreachable. Operand 224 states. [2019-05-23 11:26:56,337 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 224 states to 224 states and 233 transitions. [2019-05-23 11:26:56,338 INFO L146 ILogger]: Start accepts. Automaton has 224 states and 233 transitions. Word has length 94 [2019-05-23 11:26:56,338 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:56,338 INFO L146 ILogger]: Abstraction has 224 states and 233 transitions. [2019-05-23 11:26:56,338 INFO L146 ILogger]: Interpolant automaton has 73 states. [2019-05-23 11:26:56,338 INFO L146 ILogger]: Start isEmpty. Operand 224 states and 233 transitions. [2019-05-23 11:26:56,341 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:26:56,341 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:56,341 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:56,341 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:56,342 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:56,342 INFO L146 ILogger]: Analyzing trace with hash -76639403, now seen corresponding path program 1 times [2019-05-23 11:26:56,342 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:56,342 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:56,343 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:56,343 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:56,343 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:56,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:57,007 WARN L146 ILogger]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2019-05-23 11:26:57,296 WARN L146 ILogger]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-05-23 11:26:57,639 WARN L146 ILogger]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-05-23 11:26:58,122 WARN L146 ILogger]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 40 [2019-05-23 11:26:58,726 WARN L146 ILogger]: Spent 105.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 40 [2019-05-23 11:26:59,843 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2019-05-23 11:26:59,977 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2019-05-23 11:27:01,033 WARN L146 ILogger]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2019-05-23 11:27:01,986 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:01,986 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:01,986 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 11:27:01,995 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:02,043 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:02,046 INFO L146 ILogger]: Trace formula consists of 185 conjuncts, 75 conjunts are in the unsatisfiable core [2019-05-23 11:27:02,059 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:02,082 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:27:02,082 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,089 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:02,089 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,090 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-05-23 11:27:02,118 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:02,119 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-05-23 11:27:02,119 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,145 INFO L146 ILogger]: treesize reduction 14, result has 63.2 percent of original size [2019-05-23 11:27:02,145 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,146 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:24 [2019-05-23 11:27:02,163 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:02,164 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2019-05-23 11:27:02,164 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,174 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:02,175 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,175 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:25 [2019-05-23 11:27:02,304 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2019-05-23 11:27:02,305 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,324 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:02,324 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,324 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:51 [2019-05-23 11:27:02,405 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 41 [2019-05-23 11:27:02,406 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,428 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:02,429 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,429 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:51 [2019-05-23 11:27:02,714 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:02,716 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2019-05-23 11:27:02,716 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,748 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:02,748 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,749 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:49 [2019-05-23 11:27:02,755 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2019-05-23 11:27:02,755 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,781 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:02,781 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:02,782 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:49 [2019-05-23 11:27:03,131 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:03,133 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 30 [2019-05-23 11:27:03,134 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,156 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:03,157 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,157 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:75, output treesize:43 [2019-05-23 11:27:03,243 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2019-05-23 11:27:03,244 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,266 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:03,266 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,267 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2019-05-23 11:27:03,451 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2019-05-23 11:27:03,451 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,472 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:03,473 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,473 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:49 [2019-05-23 11:27:03,490 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:03,491 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2019-05-23 11:27:03,492 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,515 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:03,515 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,516 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:49 [2019-05-23 11:27:03,790 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:03,791 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2019-05-23 11:27:03,791 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,815 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:03,816 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,816 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:72, output treesize:70 [2019-05-23 11:27:03,937 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2019-05-23 11:27:03,937 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,955 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:03,956 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:03,956 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:35 [2019-05-23 11:27:04,279 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:04,280 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2019-05-23 11:27:04,281 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:04,287 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:04,288 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:04,288 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:42, output treesize:3 [2019-05-23 11:27:04,437 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:04,464 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:04,465 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 36] total 63 [2019-05-23 11:27:04,465 INFO L146 ILogger]: Interpolant automaton has 63 states [2019-05-23 11:27:04,466 INFO L146 ILogger]: Constructing interpolant automaton starting with 63 interpolants. [2019-05-23 11:27:04,467 INFO L146 ILogger]: CoverageRelationStatistics Valid=461, Invalid=3445, Unknown=0, NotChecked=0, Total=3906 [2019-05-23 11:27:04,467 INFO L146 ILogger]: Start difference. First operand 224 states and 233 transitions. Second operand 63 states. [2019-05-23 11:27:05,748 WARN L146 ILogger]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-05-23 11:27:06,429 WARN L146 ILogger]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2019-05-23 11:27:07,267 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-05-23 11:27:09,156 WARN L146 ILogger]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-05-23 11:27:10,033 WARN L146 ILogger]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-05-23 11:27:11,933 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:11,934 INFO L146 ILogger]: Finished difference Result 330 states and 341 transitions. [2019-05-23 11:27:11,939 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2019-05-23 11:27:11,939 INFO L146 ILogger]: Start accepts. Automaton has 63 states. Word has length 106 [2019-05-23 11:27:11,940 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:11,941 INFO L146 ILogger]: With dead ends: 330 [2019-05-23 11:27:11,941 INFO L146 ILogger]: Without dead ends: 328 [2019-05-23 11:27:11,946 INFO L146 ILogger]: 0 DeclaredPredicates, 218 GetRequests, 82 SyntacticMatches, 12 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5358 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=2196, Invalid=13554, Unknown=0, NotChecked=0, Total=15750 [2019-05-23 11:27:11,947 INFO L146 ILogger]: Start minimizeSevpa. Operand 328 states. [2019-05-23 11:27:11,965 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 328 to 272. [2019-05-23 11:27:11,965 INFO L146 ILogger]: Start removeUnreachable. Operand 272 states. [2019-05-23 11:27:11,966 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 272 states to 272 states and 283 transitions. [2019-05-23 11:27:11,967 INFO L146 ILogger]: Start accepts. Automaton has 272 states and 283 transitions. Word has length 106 [2019-05-23 11:27:11,967 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:11,967 INFO L146 ILogger]: Abstraction has 272 states and 283 transitions. [2019-05-23 11:27:11,967 INFO L146 ILogger]: Interpolant automaton has 63 states. [2019-05-23 11:27:11,967 INFO L146 ILogger]: Start isEmpty. Operand 272 states and 283 transitions. [2019-05-23 11:27:11,970 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 115 [2019-05-23 11:27:11,970 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:11,970 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:11,971 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:11,971 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:11,971 INFO L146 ILogger]: Analyzing trace with hash -487036583, now seen corresponding path program 5 times [2019-05-23 11:27:11,971 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:11,971 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:11,972 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:11,972 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:11,972 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:11,987 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:12,419 INFO L146 ILogger]: Checked inductivity of 90 backedges. 14 proven. 63 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:27:12,419 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:12,419 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 11:27:12,429 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:27:12,865 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:27:12,865 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:12,867 INFO L146 ILogger]: Trace formula consists of 195 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:27:12,871 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:13,009 INFO L146 ILogger]: Checked inductivity of 90 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:27:13,028 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:13,029 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2019-05-23 11:27:13,030 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:27:13,030 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:27:13,030 INFO L146 ILogger]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:27:13,030 INFO L146 ILogger]: Start difference. First operand 272 states and 283 transitions. Second operand 22 states. [2019-05-23 11:27:13,992 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:13,993 INFO L146 ILogger]: Finished difference Result 414 states and 429 transitions. [2019-05-23 11:27:13,993 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:27:13,993 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 114 [2019-05-23 11:27:13,994 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:13,996 INFO L146 ILogger]: With dead ends: 414 [2019-05-23 11:27:13,996 INFO L146 ILogger]: Without dead ends: 375 [2019-05-23 11:27:13,997 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:27:13,997 INFO L146 ILogger]: Start minimizeSevpa. Operand 375 states. [2019-05-23 11:27:14,008 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 375 to 283. [2019-05-23 11:27:14,008 INFO L146 ILogger]: Start removeUnreachable. Operand 283 states. [2019-05-23 11:27:14,009 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 283 states to 283 states and 294 transitions. [2019-05-23 11:27:14,009 INFO L146 ILogger]: Start accepts. Automaton has 283 states and 294 transitions. Word has length 114 [2019-05-23 11:27:14,010 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:14,010 INFO L146 ILogger]: Abstraction has 283 states and 294 transitions. [2019-05-23 11:27:14,010 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:27:14,010 INFO L146 ILogger]: Start isEmpty. Operand 283 states and 294 transitions. [2019-05-23 11:27:14,017 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:27:14,017 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:14,017 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:14,017 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:14,018 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:14,018 INFO L146 ILogger]: Analyzing trace with hash -790097071, now seen corresponding path program 6 times [2019-05-23 11:27:14,018 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:14,018 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:14,019 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:14,019 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:14,019 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:14,029 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:14,270 INFO L146 ILogger]: Checked inductivity of 82 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:27:14,270 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:14,270 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 11:27:14,278 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:27:14,321 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:27:14,322 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:14,323 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:27:14,325 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:14,453 INFO L146 ILogger]: Checked inductivity of 82 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:27:14,472 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:14,472 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:27:14,472 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:27:14,473 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:27:14,473 INFO L146 ILogger]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:27:14,473 INFO L146 ILogger]: Start difference. First operand 283 states and 294 transitions. Second operand 21 states. [2019-05-23 11:27:15,681 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:15,682 INFO L146 ILogger]: Finished difference Result 415 states and 430 transitions. [2019-05-23 11:27:15,682 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:27:15,682 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 115 [2019-05-23 11:27:15,683 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:15,685 INFO L146 ILogger]: With dead ends: 415 [2019-05-23 11:27:15,685 INFO L146 ILogger]: Without dead ends: 392 [2019-05-23 11:27:15,687 INFO L146 ILogger]: 0 DeclaredPredicates, 158 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=354, Invalid=1902, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:27:15,687 INFO L146 ILogger]: Start minimizeSevpa. Operand 392 states. [2019-05-23 11:27:15,696 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 392 to 258. [2019-05-23 11:27:15,696 INFO L146 ILogger]: Start removeUnreachable. Operand 258 states. [2019-05-23 11:27:15,697 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 258 states to 258 states and 267 transitions. [2019-05-23 11:27:15,698 INFO L146 ILogger]: Start accepts. Automaton has 258 states and 267 transitions. Word has length 115 [2019-05-23 11:27:15,698 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:15,698 INFO L146 ILogger]: Abstraction has 258 states and 267 transitions. [2019-05-23 11:27:15,698 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:27:15,698 INFO L146 ILogger]: Start isEmpty. Operand 258 states and 267 transitions. [2019-05-23 11:27:15,700 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:27:15,700 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:15,700 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:15,700 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:15,701 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:15,701 INFO L146 ILogger]: Analyzing trace with hash -1780311482, now seen corresponding path program 7 times [2019-05-23 11:27:15,701 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:15,701 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:15,702 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:15,702 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:15,702 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:15,712 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:15,946 INFO L146 ILogger]: Checked inductivity of 82 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:27:15,947 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:15,947 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 11:27:15,958 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:15,991 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:15,992 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:27:15,993 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:16,093 INFO L146 ILogger]: Checked inductivity of 82 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:27:16,112 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:16,112 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:27:16,112 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:27:16,113 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:27:16,113 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:27:16,113 INFO L146 ILogger]: Start difference. First operand 258 states and 267 transitions. Second operand 20 states. [2019-05-23 11:27:17,022 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:17,022 INFO L146 ILogger]: Finished difference Result 399 states and 411 transitions. [2019-05-23 11:27:17,024 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:27:17,025 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 115 [2019-05-23 11:27:17,025 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:17,026 INFO L146 ILogger]: With dead ends: 399 [2019-05-23 11:27:17,026 INFO L146 ILogger]: Without dead ends: 349 [2019-05-23 11:27:17,028 INFO L146 ILogger]: 0 DeclaredPredicates, 143 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:27:17,028 INFO L146 ILogger]: Start minimizeSevpa. Operand 349 states. [2019-05-23 11:27:17,036 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 349 to 247. [2019-05-23 11:27:17,036 INFO L146 ILogger]: Start removeUnreachable. Operand 247 states. [2019-05-23 11:27:17,037 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 247 states to 247 states and 255 transitions. [2019-05-23 11:27:17,037 INFO L146 ILogger]: Start accepts. Automaton has 247 states and 255 transitions. Word has length 115 [2019-05-23 11:27:17,038 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:17,038 INFO L146 ILogger]: Abstraction has 247 states and 255 transitions. [2019-05-23 11:27:17,038 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:27:17,038 INFO L146 ILogger]: Start isEmpty. Operand 247 states and 255 transitions. [2019-05-23 11:27:17,039 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:27:17,039 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:17,039 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:17,040 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:17,040 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:17,040 INFO L146 ILogger]: Analyzing trace with hash 1605360941, now seen corresponding path program 8 times [2019-05-23 11:27:17,040 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:17,040 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:17,041 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:17,041 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:17,041 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:17,052 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:17,252 INFO L146 ILogger]: Checked inductivity of 95 backedges. 49 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:27:17,252 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:17,253 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 11:27:17,261 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:27:17,295 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:27:17,295 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:17,296 INFO L146 ILogger]: Trace formula consists of 199 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:27:17,298 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:17,422 INFO L146 ILogger]: Checked inductivity of 95 backedges. 59 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:27:17,440 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:17,440 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 23 [2019-05-23 11:27:17,441 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:27:17,441 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:27:17,441 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:27:17,442 INFO L146 ILogger]: Start difference. First operand 247 states and 255 transitions. Second operand 23 states. [2019-05-23 11:27:18,099 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:18,099 INFO L146 ILogger]: Finished difference Result 324 states and 333 transitions. [2019-05-23 11:27:18,099 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:27:18,099 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 116 [2019-05-23 11:27:18,100 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:18,102 INFO L146 ILogger]: With dead ends: 324 [2019-05-23 11:27:18,102 INFO L146 ILogger]: Without dead ends: 244 [2019-05-23 11:27:18,104 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=286, Invalid=1606, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:27:18,104 INFO L146 ILogger]: Start minimizeSevpa. Operand 244 states. [2019-05-23 11:27:18,110 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 244 to 200. [2019-05-23 11:27:18,111 INFO L146 ILogger]: Start removeUnreachable. Operand 200 states. [2019-05-23 11:27:18,111 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 200 states to 200 states and 204 transitions. [2019-05-23 11:27:18,112 INFO L146 ILogger]: Start accepts. Automaton has 200 states and 204 transitions. Word has length 116 [2019-05-23 11:27:18,112 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:18,112 INFO L146 ILogger]: Abstraction has 200 states and 204 transitions. [2019-05-23 11:27:18,112 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:27:18,112 INFO L146 ILogger]: Start isEmpty. Operand 200 states and 204 transitions. [2019-05-23 11:27:18,113 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 119 [2019-05-23 11:27:18,113 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:18,114 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:18,114 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:18,114 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:18,114 INFO L146 ILogger]: Analyzing trace with hash -2092198883, now seen corresponding path program 2 times [2019-05-23 11:27:18,114 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:18,114 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:18,115 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:18,115 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:18,115 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:18,125 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:18,286 INFO L146 ILogger]: Checked inductivity of 64 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-05-23 11:27:18,286 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:18,286 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 11:27:18,295 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:27:18,352 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:27:18,352 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:18,353 INFO L146 ILogger]: Trace formula consists of 203 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:27:18,355 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:18,559 INFO L146 ILogger]: Checked inductivity of 64 backedges. 26 proven. 12 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:27:18,577 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:18,577 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:27:18,578 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:27:18,578 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:27:18,579 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:27:18,579 INFO L146 ILogger]: Start difference. First operand 200 states and 204 transitions. Second operand 21 states. [2019-05-23 11:27:19,175 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:19,175 INFO L146 ILogger]: Finished difference Result 250 states and 254 transitions. [2019-05-23 11:27:19,176 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:27:19,176 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 118 [2019-05-23 11:27:19,176 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:19,177 INFO L146 ILogger]: With dead ends: 250 [2019-05-23 11:27:19,178 INFO L146 ILogger]: Without dead ends: 162 [2019-05-23 11:27:19,179 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=1449, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:27:19,179 INFO L146 ILogger]: Start minimizeSevpa. Operand 162 states. [2019-05-23 11:27:19,183 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 162 to 132. [2019-05-23 11:27:19,183 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:27:19,184 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2019-05-23 11:27:19,184 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 118 [2019-05-23 11:27:19,184 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:19,184 INFO L146 ILogger]: Abstraction has 132 states and 135 transitions. [2019-05-23 11:27:19,184 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:27:19,184 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 135 transitions. [2019-05-23 11:27:19,185 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:27:19,185 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:19,186 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:19,186 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:19,186 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:19,186 INFO L146 ILogger]: Analyzing trace with hash -1373070360, now seen corresponding path program 9 times [2019-05-23 11:27:19,186 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:19,186 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:19,187 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:19,187 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:19,187 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:19,236 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:19,814 WARN L146 ILogger]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-05-23 11:27:20,036 WARN L146 ILogger]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-05-23 11:27:20,402 WARN L146 ILogger]: Spent 281.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2019-05-23 11:27:22,437 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2019-05-23 11:27:22,662 WARN L146 ILogger]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2019-05-23 11:27:22,836 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-05-23 11:27:23,019 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-05-23 11:27:23,240 WARN L146 ILogger]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2019-05-23 11:27:23,408 WARN L146 ILogger]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-05-23 11:27:23,648 WARN L146 ILogger]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-05-23 11:27:23,808 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2019-05-23 11:27:23,969 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2019-05-23 11:27:24,528 WARN L146 ILogger]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2019-05-23 11:27:24,767 WARN L146 ILogger]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2019-05-23 11:27:24,956 WARN L146 ILogger]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2019-05-23 11:27:25,151 WARN L146 ILogger]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2019-05-23 11:27:25,397 WARN L146 ILogger]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2019-05-23 11:27:25,707 WARN L146 ILogger]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2019-05-23 11:27:25,908 WARN L146 ILogger]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2019-05-23 11:27:26,437 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43