java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_two_index_02_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:13,282 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:13,284 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:13,297 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:13,297 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:13,298 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:13,300 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:13,302 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:13,304 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:13,305 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:13,306 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:13,306 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:13,307 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:13,308 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:13,310 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:13,311 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:13,312 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:13,314 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:13,316 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:13,318 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:13,319 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:13,320 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:13,323 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:13,324 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:13,324 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:13,325 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:13,325 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:13,327 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:13,327 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:13,328 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:13,329 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:13,330 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:13,331 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:13,332 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:13,336 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:13,338 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:13,338 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:13,339 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:13,340 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:13,340 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:13,372 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:13,372 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:13,374 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:13,378 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:13,378 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:13,378 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:13,379 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:13,379 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:13,379 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:13,379 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:13,379 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:13,380 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:13,380 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:13,380 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:13,380 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:13,380 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:13,381 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:13,381 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:13,381 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:13,381 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:13,382 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:13,382 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:13,382 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:13,382 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:13,382 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:13,383 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:13,383 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:13,383 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:13,383 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:20:13,418 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:13,429 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:13,438 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:13,440 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:13,440 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:13,441 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_two_index_02_true-unreach-call.i [2019-05-23 11:20:13,509 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656642c89/08d6f03a84784798a42d458274cc526f/FLAG747e2d5cb [2019-05-23 11:20:13,895 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:13,896 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_two_index_02_true-unreach-call.i [2019-05-23 11:20:13,902 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656642c89/08d6f03a84784798a42d458274cc526f/FLAG747e2d5cb [2019-05-23 11:20:14,273 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656642c89/08d6f03a84784798a42d458274cc526f [2019-05-23 11:20:14,282 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:14,283 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:14,284 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:14,285 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:14,289 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:14,290 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,293 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eafdb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14, skipping insertion in model container [2019-05-23 11:20:14,293 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,301 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:14,321 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:14,548 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:14,553 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:14,586 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:14,616 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:14,616 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14 WrapperNode [2019-05-23 11:20:14,616 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:14,617 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:14,618 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:14,618 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:14,628 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,637 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,664 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:14,667 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:14,667 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:14,667 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:14,678 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,679 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,681 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,682 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,690 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,697 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,698 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,701 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:14,701 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:14,701 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:14,702 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:14,702 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:20:14,850 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:20:14,850 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:14,850 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:14,850 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:14,851 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:14,851 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:15,252 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:15,253 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:20:15,254 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:15 BoogieIcfgContainer [2019-05-23 11:20:15,254 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:15,255 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:15,255 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:15,258 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:15,258 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:14" (1/3) ... [2019-05-23 11:20:15,259 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c2d3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:15, skipping insertion in model container [2019-05-23 11:20:15,260 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (2/3) ... [2019-05-23 11:20:15,260 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c2d3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:15, skipping insertion in model container [2019-05-23 11:20:15,260 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:15" (3/3) ... [2019-05-23 11:20:15,262 INFO L146 ILogger]: Analyzing ICFG standard_two_index_02_true-unreach-call.i [2019-05-23 11:20:15,272 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:15,280 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:15,297 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:15,330 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:15,330 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:15,330 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:15,331 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:15,331 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:15,331 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:15,331 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:15,331 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:15,331 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:15,345 INFO L146 ILogger]: Start isEmpty. Operand 43 states. [2019-05-23 11:20:15,355 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:15,356 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,357 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:15,359 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,364 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,365 INFO L146 ILogger]: Analyzing trace with hash -1541380129, now seen corresponding path program 1 times [2019-05-23 11:20:15,366 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,366 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,409 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,410 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,410 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,454 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,495 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:15,497 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:15,498 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:15,502 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:15,514 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:15,515 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:15,517 INFO L146 ILogger]: Start difference. First operand 43 states. Second operand 2 states. [2019-05-23 11:20:15,535 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:15,535 INFO L146 ILogger]: Finished difference Result 73 states and 83 transitions. [2019-05-23 11:20:15,536 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:15,537 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:20:15,537 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:15,546 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:20:15,546 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:20:15,549 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:15,563 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:20:15,576 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:20:15,577 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:20:15,578 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:20:15,579 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 21 [2019-05-23 11:20:15,580 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:15,580 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:20:15,580 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:15,580 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:20:15,581 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:15,581 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,581 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:15,582 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,582 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,582 INFO L146 ILogger]: Analyzing trace with hash 805843927, now seen corresponding path program 1 times [2019-05-23 11:20:15,582 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,583 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,584 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,584 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,584 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,598 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,675 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:15,675 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:15,678 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:15,680 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:15,680 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:15,680 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:15,682 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2019-05-23 11:20:15,764 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:15,764 INFO L146 ILogger]: Finished difference Result 62 states and 66 transitions. [2019-05-23 11:20:15,765 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:15,765 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:20:15,765 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:15,766 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:20:15,766 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:20:15,768 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:15,768 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:20:15,773 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-05-23 11:20:15,773 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:20:15,774 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-05-23 11:20:15,774 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 21 [2019-05-23 11:20:15,774 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:15,774 INFO L146 ILogger]: Abstraction has 36 states and 38 transitions. [2019-05-23 11:20:15,775 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:15,775 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 38 transitions. [2019-05-23 11:20:15,776 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:20:15,776 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,776 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:15,776 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,777 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,777 INFO L146 ILogger]: Analyzing trace with hash 1928914446, now seen corresponding path program 1 times [2019-05-23 11:20:15,777 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,777 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,778 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,778 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,778 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,798 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,832 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:15,832 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:15,833 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:15,833 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:15,833 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:15,834 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:15,834 INFO L146 ILogger]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2019-05-23 11:20:15,978 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:15,979 INFO L146 ILogger]: Finished difference Result 68 states and 71 transitions. [2019-05-23 11:20:15,979 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:15,979 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 26 [2019-05-23 11:20:15,980 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:15,981 INFO L146 ILogger]: With dead ends: 68 [2019-05-23 11:20:15,981 INFO L146 ILogger]: Without dead ends: 53 [2019-05-23 11:20:15,982 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:15,982 INFO L146 ILogger]: Start minimizeSevpa. Operand 53 states. [2019-05-23 11:20:15,986 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 53 to 37. [2019-05-23 11:20:15,987 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:20:15,988 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-05-23 11:20:15,988 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 26 [2019-05-23 11:20:15,988 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:15,988 INFO L146 ILogger]: Abstraction has 37 states and 39 transitions. [2019-05-23 11:20:15,989 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:15,989 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 39 transitions. [2019-05-23 11:20:15,990 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:20:15,990 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,990 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:15,990 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,991 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,991 INFO L146 ILogger]: Analyzing trace with hash 876855147, now seen corresponding path program 1 times [2019-05-23 11:20:15,991 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,991 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,992 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,993 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,993 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,026 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,114 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:16,114 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:16,114 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:16,135 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:16,181 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,183 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:16,190 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:16,311 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:16,344 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:16,345 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:16,345 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:16,345 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:16,348 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:16,348 INFO L146 ILogger]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2019-05-23 11:20:16,638 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:16,639 INFO L146 ILogger]: Finished difference Result 85 states and 89 transitions. [2019-05-23 11:20:16,639 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:16,639 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 32 [2019-05-23 11:20:16,640 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:16,641 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:20:16,641 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:20:16,642 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:16,642 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:20:16,647 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 42. [2019-05-23 11:20:16,647 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:20:16,648 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-05-23 11:20:16,648 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2019-05-23 11:20:16,648 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:16,648 INFO L146 ILogger]: Abstraction has 42 states and 44 transitions. [2019-05-23 11:20:16,649 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:16,649 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 44 transitions. [2019-05-23 11:20:16,649 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:20:16,650 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:16,650 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:16,650 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:16,650 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:16,650 INFO L146 ILogger]: Analyzing trace with hash -411413292, now seen corresponding path program 2 times [2019-05-23 11:20:16,651 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:16,651 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:16,651 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,652 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:16,652 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,674 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,767 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:16,767 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:16,767 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:16,785 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:16,833 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:16,834 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,834 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:16,837 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:16,899 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:16,921 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:16,922 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:20:16,922 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:20:16,922 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:20:16,923 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:16,923 INFO L146 ILogger]: Start difference. First operand 42 states and 44 transitions. Second operand 6 states. [2019-05-23 11:20:17,211 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:17,212 INFO L146 ILogger]: Finished difference Result 90 states and 94 transitions. [2019-05-23 11:20:17,215 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:17,215 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 37 [2019-05-23 11:20:17,216 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:17,217 INFO L146 ILogger]: With dead ends: 90 [2019-05-23 11:20:17,217 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:20:17,217 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:17,218 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:20:17,223 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 47. [2019-05-23 11:20:17,223 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:20:17,224 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2019-05-23 11:20:17,224 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 37 [2019-05-23 11:20:17,224 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:17,224 INFO L146 ILogger]: Abstraction has 47 states and 49 transitions. [2019-05-23 11:20:17,225 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:20:17,225 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 49 transitions. [2019-05-23 11:20:17,226 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:20:17,226 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:17,226 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:17,227 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:17,227 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:17,227 INFO L146 ILogger]: Analyzing trace with hash -1153058549, now seen corresponding path program 3 times [2019-05-23 11:20:17,227 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:17,227 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:17,228 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,228 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:17,228 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,250 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,296 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:17,296 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:17,296 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:17,315 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:17,377 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:20:17,377 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,378 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:17,380 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:17,395 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:17,416 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:17,416 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:17,416 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:17,416 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:17,417 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:17,417 INFO L146 ILogger]: Start difference. First operand 47 states and 49 transitions. Second operand 5 states. [2019-05-23 11:20:17,508 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:17,508 INFO L146 ILogger]: Finished difference Result 97 states and 100 transitions. [2019-05-23 11:20:17,510 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:17,510 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 42 [2019-05-23 11:20:17,510 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:17,512 INFO L146 ILogger]: With dead ends: 97 [2019-05-23 11:20:17,512 INFO L146 ILogger]: Without dead ends: 82 [2019-05-23 11:20:17,513 INFO L146 ILogger]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:17,513 INFO L146 ILogger]: Start minimizeSevpa. Operand 82 states. [2019-05-23 11:20:17,518 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 82 to 53. [2019-05-23 11:20:17,518 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:20:17,519 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2019-05-23 11:20:17,519 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 42 [2019-05-23 11:20:17,519 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:17,520 INFO L146 ILogger]: Abstraction has 53 states and 55 transitions. [2019-05-23 11:20:17,520 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:17,520 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 55 transitions. [2019-05-23 11:20:17,521 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 49 [2019-05-23 11:20:17,521 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:17,521 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:17,522 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:17,522 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:17,522 INFO L146 ILogger]: Analyzing trace with hash 934518952, now seen corresponding path program 4 times [2019-05-23 11:20:17,522 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:17,522 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:17,523 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,523 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:17,524 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,540 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,669 INFO L146 ILogger]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:17,669 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:17,670 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:17,687 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:17,741 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:17,741 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,742 INFO L146 ILogger]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:17,745 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:17,852 INFO L146 ILogger]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:17,886 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:17,886 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:20:17,887 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:20:17,887 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:20:17,889 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:17,889 INFO L146 ILogger]: Start difference. First operand 53 states and 55 transitions. Second operand 7 states. [2019-05-23 11:20:18,069 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:18,070 INFO L146 ILogger]: Finished difference Result 120 states and 124 transitions. [2019-05-23 11:20:18,071 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:20:18,071 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 48 [2019-05-23 11:20:18,071 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:18,072 INFO L146 ILogger]: With dead ends: 120 [2019-05-23 11:20:18,072 INFO L146 ILogger]: Without dead ends: 91 [2019-05-23 11:20:18,075 INFO L146 ILogger]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:18,076 INFO L146 ILogger]: Start minimizeSevpa. Operand 91 states. [2019-05-23 11:20:18,083 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 91 to 58. [2019-05-23 11:20:18,083 INFO L146 ILogger]: Start removeUnreachable. Operand 58 states. [2019-05-23 11:20:18,084 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2019-05-23 11:20:18,084 INFO L146 ILogger]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 48 [2019-05-23 11:20:18,084 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:18,084 INFO L146 ILogger]: Abstraction has 58 states and 60 transitions. [2019-05-23 11:20:18,084 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:20:18,085 INFO L146 ILogger]: Start isEmpty. Operand 58 states and 60 transitions. [2019-05-23 11:20:18,085 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 54 [2019-05-23 11:20:18,085 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:18,086 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:18,086 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:18,086 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:18,086 INFO L146 ILogger]: Analyzing trace with hash -1295236079, now seen corresponding path program 5 times [2019-05-23 11:20:18,087 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:18,087 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:18,088 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,088 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:18,088 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,104 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,175 INFO L146 ILogger]: Checked inductivity of 42 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:18,175 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:18,176 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:18,185 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:18,270 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:20:18,270 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,271 INFO L146 ILogger]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:18,273 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:18,313 INFO L146 ILogger]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:20:18,334 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:18,334 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2019-05-23 11:20:18,335 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:20:18,335 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:20:18,336 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:18,336 INFO L146 ILogger]: Start difference. First operand 58 states and 60 transitions. Second operand 8 states. [2019-05-23 11:20:18,717 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:18,717 INFO L146 ILogger]: Finished difference Result 149 states and 155 transitions. [2019-05-23 11:20:18,717 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:18,718 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 53 [2019-05-23 11:20:18,718 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:18,719 INFO L146 ILogger]: With dead ends: 149 [2019-05-23 11:20:18,719 INFO L146 ILogger]: Without dead ends: 120 [2019-05-23 11:20:18,720 INFO L146 ILogger]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:18,725 INFO L146 ILogger]: Start minimizeSevpa. Operand 120 states. [2019-05-23 11:20:18,734 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 120 to 74. [2019-05-23 11:20:18,734 INFO L146 ILogger]: Start removeUnreachable. Operand 74 states. [2019-05-23 11:20:18,737 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2019-05-23 11:20:18,738 INFO L146 ILogger]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 53 [2019-05-23 11:20:18,738 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:18,738 INFO L146 ILogger]: Abstraction has 74 states and 76 transitions. [2019-05-23 11:20:18,738 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:20:18,739 INFO L146 ILogger]: Start isEmpty. Operand 74 states and 76 transitions. [2019-05-23 11:20:18,739 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:20:18,744 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:18,744 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:18,744 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:18,745 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:18,745 INFO L146 ILogger]: Analyzing trace with hash 628773262, now seen corresponding path program 6 times [2019-05-23 11:20:18,745 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:18,745 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:18,746 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,746 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:18,746 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,789 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,385 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:19,386 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:19,386 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:19,402 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:19,458 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:19,459 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,460 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:19,463 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:19,484 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:19,506 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:19,506 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:20:19,507 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:20:19,507 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:20:19,507 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:19,507 INFO L146 ILogger]: Start difference. First operand 74 states and 76 transitions. Second operand 10 states. [2019-05-23 11:20:19,753 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:19,753 INFO L146 ILogger]: Finished difference Result 160 states and 164 transitions. [2019-05-23 11:20:19,754 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:20:19,754 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 69 [2019-05-23 11:20:19,754 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:19,755 INFO L146 ILogger]: With dead ends: 160 [2019-05-23 11:20:19,755 INFO L146 ILogger]: Without dead ends: 125 [2019-05-23 11:20:19,756 INFO L146 ILogger]: 0 DeclaredPredicates, 77 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:19,756 INFO L146 ILogger]: Start minimizeSevpa. Operand 125 states. [2019-05-23 11:20:19,761 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 125 to 79. [2019-05-23 11:20:19,762 INFO L146 ILogger]: Start removeUnreachable. Operand 79 states. [2019-05-23 11:20:19,762 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2019-05-23 11:20:19,763 INFO L146 ILogger]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 69 [2019-05-23 11:20:19,763 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:19,763 INFO L146 ILogger]: Abstraction has 79 states and 81 transitions. [2019-05-23 11:20:19,763 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:20:19,763 INFO L146 ILogger]: Start isEmpty. Operand 79 states and 81 transitions. [2019-05-23 11:20:19,764 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:20:19,764 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,765 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:19,765 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,765 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,765 INFO L146 ILogger]: Analyzing trace with hash 1544493509, now seen corresponding path program 7 times [2019-05-23 11:20:19,765 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,766 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,766 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,766 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:19,767 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,784 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,980 INFO L146 ILogger]: Checked inductivity of 133 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:20:19,981 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:19,981 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:19,995 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:20,029 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,030 INFO L146 ILogger]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,033 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,102 INFO L146 ILogger]: Checked inductivity of 133 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:20,120 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,120 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 11 [2019-05-23 11:20:20,121 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:20:20,121 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:20:20,121 INFO L146 ILogger]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:20,122 INFO L146 ILogger]: Start difference. First operand 79 states and 81 transitions. Second operand 11 states. [2019-05-23 11:20:20,253 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:20,254 INFO L146 ILogger]: Finished difference Result 184 states and 189 transitions. [2019-05-23 11:20:20,254 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:20:20,254 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 74 [2019-05-23 11:20:20,255 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:20,256 INFO L146 ILogger]: With dead ends: 184 [2019-05-23 11:20:20,256 INFO L146 ILogger]: Without dead ends: 149 [2019-05-23 11:20:20,257 INFO L146 ILogger]: 0 DeclaredPredicates, 79 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:20,259 INFO L146 ILogger]: Start minimizeSevpa. Operand 149 states. [2019-05-23 11:20:20,271 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 149 to 90. [2019-05-23 11:20:20,271 INFO L146 ILogger]: Start removeUnreachable. Operand 90 states. [2019-05-23 11:20:20,272 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2019-05-23 11:20:20,273 INFO L146 ILogger]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 74 [2019-05-23 11:20:20,273 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:20,273 INFO L146 ILogger]: Abstraction has 90 states and 92 transitions. [2019-05-23 11:20:20,273 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:20:20,273 INFO L146 ILogger]: Start isEmpty. Operand 90 states and 92 transitions. [2019-05-23 11:20:20,275 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:20:20,275 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:20,275 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:20,275 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:20,276 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:20,276 INFO L146 ILogger]: Analyzing trace with hash 948227403, now seen corresponding path program 8 times [2019-05-23 11:20:20,276 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:20,276 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:20,277 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,277 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:20,277 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,306 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,547 INFO L146 ILogger]: Checked inductivity of 188 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:20,548 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:20,548 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:20,561 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:20,595 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:20,596 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,597 INFO L146 ILogger]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,599 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,632 INFO L146 ILogger]: Checked inductivity of 188 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:20,653 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,653 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:20:20,653 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:20:20,654 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:20:20,654 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:20:20,654 INFO L146 ILogger]: Start difference. First operand 90 states and 92 transitions. Second operand 12 states. [2019-05-23 11:20:20,923 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:20,924 INFO L146 ILogger]: Finished difference Result 195 states and 199 transitions. [2019-05-23 11:20:20,925 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:20:20,925 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 85 [2019-05-23 11:20:20,926 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:20,927 INFO L146 ILogger]: With dead ends: 195 [2019-05-23 11:20:20,927 INFO L146 ILogger]: Without dead ends: 154 [2019-05-23 11:20:20,928 INFO L146 ILogger]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:20:20,928 INFO L146 ILogger]: Start minimizeSevpa. Operand 154 states. [2019-05-23 11:20:20,932 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 154 to 95. [2019-05-23 11:20:20,933 INFO L146 ILogger]: Start removeUnreachable. Operand 95 states. [2019-05-23 11:20:20,933 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2019-05-23 11:20:20,934 INFO L146 ILogger]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 85 [2019-05-23 11:20:20,934 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:20,934 INFO L146 ILogger]: Abstraction has 95 states and 97 transitions. [2019-05-23 11:20:20,934 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:20:20,934 INFO L146 ILogger]: Start isEmpty. Operand 95 states and 97 transitions. [2019-05-23 11:20:20,936 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 91 [2019-05-23 11:20:20,936 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:20,936 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:20,936 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:20,937 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:20,937 INFO L146 ILogger]: Analyzing trace with hash -787986558, now seen corresponding path program 9 times [2019-05-23 11:20:20,937 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:20,937 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:20,938 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,938 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:20,938 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,956 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,107 INFO L146 ILogger]: Checked inductivity of 229 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-05-23 11:20:21,107 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:21,108 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:21,118 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:21,154 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:20:21,154 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,155 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:21,159 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:21,196 INFO L146 ILogger]: Checked inductivity of 229 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-05-23 11:20:21,215 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:21,215 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:20:21,215 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:20:21,215 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:20:21,216 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:21,216 INFO L146 ILogger]: Start difference. First operand 95 states and 97 transitions. Second operand 8 states. [2019-05-23 11:20:21,351 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:21,351 INFO L146 ILogger]: Finished difference Result 184 states and 187 transitions. [2019-05-23 11:20:21,351 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:21,352 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 90 [2019-05-23 11:20:21,352 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:21,353 INFO L146 ILogger]: With dead ends: 184 [2019-05-23 11:20:21,354 INFO L146 ILogger]: Without dead ends: 169 [2019-05-23 11:20:21,354 INFO L146 ILogger]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:21,355 INFO L146 ILogger]: Start minimizeSevpa. Operand 169 states. [2019-05-23 11:20:21,359 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 169 to 101. [2019-05-23 11:20:21,359 INFO L146 ILogger]: Start removeUnreachable. Operand 101 states. [2019-05-23 11:20:21,360 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2019-05-23 11:20:21,360 INFO L146 ILogger]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 90 [2019-05-23 11:20:21,360 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:21,361 INFO L146 ILogger]: Abstraction has 101 states and 103 transitions. [2019-05-23 11:20:21,361 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:20:21,361 INFO L146 ILogger]: Start isEmpty. Operand 101 states and 103 transitions. [2019-05-23 11:20:21,362 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 97 [2019-05-23 11:20:21,362 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:21,363 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:21,363 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:21,363 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:21,363 INFO L146 ILogger]: Analyzing trace with hash -1076282913, now seen corresponding path program 10 times [2019-05-23 11:20:21,363 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:21,364 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:21,364 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,364 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:21,365 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,382 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,513 INFO L146 ILogger]: Checked inductivity of 254 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:21,513 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:21,513 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:21,523 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:21,578 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:21,578 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,580 INFO L146 ILogger]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:20:21,583 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:21,617 INFO L146 ILogger]: Checked inductivity of 254 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:21,637 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:21,637 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:20:21,637 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:20:21,638 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:20:21,638 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:21,639 INFO L146 ILogger]: Start difference. First operand 101 states and 103 transitions. Second operand 13 states. [2019-05-23 11:20:21,760 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:21,760 INFO L146 ILogger]: Finished difference Result 225 states and 229 transitions. [2019-05-23 11:20:21,761 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:20:21,761 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 96 [2019-05-23 11:20:21,761 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:21,763 INFO L146 ILogger]: With dead ends: 225 [2019-05-23 11:20:21,763 INFO L146 ILogger]: Without dead ends: 178 [2019-05-23 11:20:21,763 INFO L146 ILogger]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:21,764 INFO L146 ILogger]: Start minimizeSevpa. Operand 178 states. [2019-05-23 11:20:21,768 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 178 to 106. [2019-05-23 11:20:21,768 INFO L146 ILogger]: Start removeUnreachable. Operand 106 states. [2019-05-23 11:20:21,769 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2019-05-23 11:20:21,769 INFO L146 ILogger]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 96 [2019-05-23 11:20:21,769 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:21,770 INFO L146 ILogger]: Abstraction has 106 states and 108 transitions. [2019-05-23 11:20:21,770 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:20:21,770 INFO L146 ILogger]: Start isEmpty. Operand 106 states and 108 transitions. [2019-05-23 11:20:21,771 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 102 [2019-05-23 11:20:21,771 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:21,772 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:21,772 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:21,772 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:21,772 INFO L146 ILogger]: Analyzing trace with hash 393217864, now seen corresponding path program 11 times [2019-05-23 11:20:21,772 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:21,773 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:21,773 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,774 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:21,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,790 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,955 INFO L146 ILogger]: Checked inductivity of 300 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:21,955 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:21,955 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:21,964 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:22,372 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:20:22,373 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:22,374 INFO L146 ILogger]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:22,377 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:22,406 INFO L146 ILogger]: Checked inductivity of 300 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2019-05-23 11:20:22,427 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:22,427 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 14 [2019-05-23 11:20:22,427 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:20:22,428 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:20:22,428 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:22,428 INFO L146 ILogger]: Start difference. First operand 106 states and 108 transitions. Second operand 14 states. [2019-05-23 11:20:22,624 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:22,624 INFO L146 ILogger]: Finished difference Result 254 states and 260 transitions. [2019-05-23 11:20:22,625 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:22,625 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 101 [2019-05-23 11:20:22,625 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:22,627 INFO L146 ILogger]: With dead ends: 254 [2019-05-23 11:20:22,627 INFO L146 ILogger]: Without dead ends: 207 [2019-05-23 11:20:22,628 INFO L146 ILogger]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:22,628 INFO L146 ILogger]: Start minimizeSevpa. Operand 207 states. [2019-05-23 11:20:22,632 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 207 to 122. [2019-05-23 11:20:22,632 INFO L146 ILogger]: Start removeUnreachable. Operand 122 states. [2019-05-23 11:20:22,633 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2019-05-23 11:20:22,633 INFO L146 ILogger]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 101 [2019-05-23 11:20:22,642 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:22,642 INFO L146 ILogger]: Abstraction has 122 states and 124 transitions. [2019-05-23 11:20:22,642 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:20:22,642 INFO L146 ILogger]: Start isEmpty. Operand 122 states and 124 transitions. [2019-05-23 11:20:22,646 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 118 [2019-05-23 11:20:22,646 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:22,646 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:22,647 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:22,647 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:22,647 INFO L146 ILogger]: Analyzing trace with hash 759451525, now seen corresponding path program 12 times [2019-05-23 11:20:22,647 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:22,647 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:22,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,648 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:22,649 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,666 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,125 INFO L146 ILogger]: Checked inductivity of 438 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:24,126 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:24,126 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:24,135 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:24,644 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:20:24,645 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,647 INFO L146 ILogger]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:24,648 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:24,720 INFO L146 ILogger]: Checked inductivity of 438 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2019-05-23 11:20:24,738 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:24,739 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 16 [2019-05-23 11:20:24,739 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:20:24,739 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:20:24,740 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:24,740 INFO L146 ILogger]: Start difference. First operand 122 states and 124 transitions. Second operand 16 states. [2019-05-23 11:20:24,941 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:24,942 INFO L146 ILogger]: Finished difference Result 289 states and 295 transitions. [2019-05-23 11:20:24,942 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:20:24,942 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 117 [2019-05-23 11:20:24,942 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:24,944 INFO L146 ILogger]: With dead ends: 289 [2019-05-23 11:20:24,944 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:20:24,945 INFO L146 ILogger]: 0 DeclaredPredicates, 131 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:24,946 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:20:24,949 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 138. [2019-05-23 11:20:24,949 INFO L146 ILogger]: Start removeUnreachable. Operand 138 states. [2019-05-23 11:20:24,950 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2019-05-23 11:20:24,950 INFO L146 ILogger]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 117 [2019-05-23 11:20:24,950 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:24,951 INFO L146 ILogger]: Abstraction has 138 states and 140 transitions. [2019-05-23 11:20:24,951 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:20:24,951 INFO L146 ILogger]: Start isEmpty. Operand 138 states and 140 transitions. [2019-05-23 11:20:24,952 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:20:24,952 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:24,952 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:24,953 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:24,953 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:24,953 INFO L146 ILogger]: Analyzing trace with hash 1905128962, now seen corresponding path program 13 times [2019-05-23 11:20:24,953 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:24,953 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:24,954 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:24,954 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:24,954 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:24,972 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,276 INFO L146 ILogger]: Checked inductivity of 602 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:25,276 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:25,276 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:25,287 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:25,322 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,323 INFO L146 ILogger]: Trace formula consists of 211 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:20:25,325 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:25,367 INFO L146 ILogger]: Checked inductivity of 602 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:25,388 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:25,389 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:20:25,389 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:20:25,390 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:20:25,390 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:20:25,390 INFO L146 ILogger]: Start difference. First operand 138 states and 140 transitions. Second operand 18 states. [2019-05-23 11:20:25,775 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:25,776 INFO L146 ILogger]: Finished difference Result 300 states and 304 transitions. [2019-05-23 11:20:25,776 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:20:25,776 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 133 [2019-05-23 11:20:25,776 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:25,777 INFO L146 ILogger]: With dead ends: 300 [2019-05-23 11:20:25,777 INFO L146 ILogger]: Without dead ends: 241 [2019-05-23 11:20:25,778 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:20:25,779 INFO L146 ILogger]: Start minimizeSevpa. Operand 241 states. [2019-05-23 11:20:25,784 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 241 to 143. [2019-05-23 11:20:25,784 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:20:25,785 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2019-05-23 11:20:25,785 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 133 [2019-05-23 11:20:25,785 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:25,785 INFO L146 ILogger]: Abstraction has 143 states and 145 transitions. [2019-05-23 11:20:25,785 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:20:25,786 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 145 transitions. [2019-05-23 11:20:25,786 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 139 [2019-05-23 11:20:25,787 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:25,788 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:25,788 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:25,788 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:25,789 INFO L146 ILogger]: Analyzing trace with hash 1376093753, now seen corresponding path program 14 times [2019-05-23 11:20:25,789 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:25,789 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:25,790 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,790 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:25,790 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,807 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,990 INFO L146 ILogger]: Checked inductivity of 673 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2019-05-23 11:20:25,991 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:25,991 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:25,999 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:26,049 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:26,049 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,050 INFO L146 ILogger]: Trace formula consists of 218 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:20:26,053 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:26,536 INFO L146 ILogger]: Checked inductivity of 673 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:26,554 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:26,555 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18] total 19 [2019-05-23 11:20:26,555 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:20:26,555 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:20:26,556 INFO L146 ILogger]: CoverageRelationStatistics Valid=170, Invalid=172, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:26,556 INFO L146 ILogger]: Start difference. First operand 143 states and 145 transitions. Second operand 19 states. [2019-05-23 11:20:26,781 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:26,782 INFO L146 ILogger]: Finished difference Result 324 states and 329 transitions. [2019-05-23 11:20:26,782 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:20:26,782 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 138 [2019-05-23 11:20:26,782 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:26,784 INFO L146 ILogger]: With dead ends: 324 [2019-05-23 11:20:26,784 INFO L146 ILogger]: Without dead ends: 265 [2019-05-23 11:20:26,785 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=172, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:26,785 INFO L146 ILogger]: Start minimizeSevpa. Operand 265 states. [2019-05-23 11:20:26,789 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 265 to 154. [2019-05-23 11:20:26,789 INFO L146 ILogger]: Start removeUnreachable. Operand 154 states. [2019-05-23 11:20:26,789 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2019-05-23 11:20:26,790 INFO L146 ILogger]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 138 [2019-05-23 11:20:26,790 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:26,790 INFO L146 ILogger]: Abstraction has 154 states and 156 transitions. [2019-05-23 11:20:26,790 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:20:26,790 INFO L146 ILogger]: Start isEmpty. Operand 154 states and 156 transitions. [2019-05-23 11:20:26,793 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 150 [2019-05-23 11:20:26,793 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:26,793 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:26,794 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:26,794 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:26,794 INFO L146 ILogger]: Analyzing trace with hash -178435393, now seen corresponding path program 15 times [2019-05-23 11:20:26,794 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:26,794 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:26,795 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,795 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:26,795 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:27,039 INFO L146 ILogger]: Checked inductivity of 792 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:27,039 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:27,040 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:27,048 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:27,211 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-05-23 11:20:27,211 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:27,212 INFO L146 ILogger]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:20:27,214 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:27,283 INFO L146 ILogger]: Checked inductivity of 792 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2019-05-23 11:20:27,303 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:27,303 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 20 [2019-05-23 11:20:27,304 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:20:27,304 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:20:27,305 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:27,305 INFO L146 ILogger]: Start difference. First operand 154 states and 156 transitions. Second operand 20 states. [2019-05-23 11:20:27,923 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:27,924 INFO L146 ILogger]: Finished difference Result 359 states and 365 transitions. [2019-05-23 11:20:27,924 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:20:27,924 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 149 [2019-05-23 11:20:27,925 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:27,926 INFO L146 ILogger]: With dead ends: 359 [2019-05-23 11:20:27,927 INFO L146 ILogger]: Without dead ends: 294 [2019-05-23 11:20:27,928 INFO L146 ILogger]: 0 DeclaredPredicates, 167 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:27,928 INFO L146 ILogger]: Start minimizeSevpa. Operand 294 states. [2019-05-23 11:20:27,932 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 294 to 170. [2019-05-23 11:20:27,933 INFO L146 ILogger]: Start removeUnreachable. Operand 170 states. [2019-05-23 11:20:27,933 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 170 states to 170 states and 172 transitions. [2019-05-23 11:20:27,933 INFO L146 ILogger]: Start accepts. Automaton has 170 states and 172 transitions. Word has length 149 [2019-05-23 11:20:27,934 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:27,934 INFO L146 ILogger]: Abstraction has 170 states and 172 transitions. [2019-05-23 11:20:27,934 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:20:27,934 INFO L146 ILogger]: Start isEmpty. Operand 170 states and 172 transitions. [2019-05-23 11:20:27,935 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 166 [2019-05-23 11:20:27,935 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:27,935 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:27,935 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:27,936 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:27,936 INFO L146 ILogger]: Analyzing trace with hash -1337549380, now seen corresponding path program 16 times [2019-05-23 11:20:27,936 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:27,936 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:27,937 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,937 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:27,937 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,954 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,275 INFO L146 ILogger]: Checked inductivity of 1008 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:20:28,276 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:28,276 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:28,285 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:28,581 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:28,581 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,583 INFO L146 ILogger]: Trace formula consists of 257 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:20:28,586 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:28,625 INFO L146 ILogger]: Checked inductivity of 1008 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:20:28,648 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:28,648 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:20:28,649 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:20:28,649 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:20:28,650 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:28,650 INFO L146 ILogger]: Start difference. First operand 170 states and 172 transitions. Second operand 22 states. [2019-05-23 11:20:29,440 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:29,441 INFO L146 ILogger]: Finished difference Result 370 states and 374 transitions. [2019-05-23 11:20:29,441 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:20:29,441 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 165 [2019-05-23 11:20:29,442 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:29,443 INFO L146 ILogger]: With dead ends: 370 [2019-05-23 11:20:29,443 INFO L146 ILogger]: Without dead ends: 299 [2019-05-23 11:20:29,444 INFO L146 ILogger]: 0 DeclaredPredicates, 185 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:29,445 INFO L146 ILogger]: Start minimizeSevpa. Operand 299 states. [2019-05-23 11:20:29,448 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 299 to 175. [2019-05-23 11:20:29,448 INFO L146 ILogger]: Start removeUnreachable. Operand 175 states. [2019-05-23 11:20:29,449 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2019-05-23 11:20:29,449 INFO L146 ILogger]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 165 [2019-05-23 11:20:29,450 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:29,450 INFO L146 ILogger]: Abstraction has 175 states and 177 transitions. [2019-05-23 11:20:29,450 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:20:29,450 INFO L146 ILogger]: Start isEmpty. Operand 175 states and 177 transitions. [2019-05-23 11:20:29,451 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 171 [2019-05-23 11:20:29,451 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:29,451 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:29,451 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:29,451 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:29,452 INFO L146 ILogger]: Analyzing trace with hash 1473745395, now seen corresponding path program 17 times [2019-05-23 11:20:29,452 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:29,452 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:29,452 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,453 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:29,453 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,469 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:29,738 INFO L146 ILogger]: Checked inductivity of 1099 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2019-05-23 11:20:29,738 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:29,738 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:29,747 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:37,192 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2019-05-23 11:20:37,193 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,201 INFO L146 ILogger]: Trace formula consists of 264 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:20:37,203 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:37,334 INFO L146 ILogger]: Checked inductivity of 1099 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:20:37,357 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:37,358 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22] total 23 [2019-05-23 11:20:37,358 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:20:37,358 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:20:37,359 INFO L146 ILogger]: CoverageRelationStatistics Valid=252, Invalid=254, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:37,359 INFO L146 ILogger]: Start difference. First operand 175 states and 177 transitions. Second operand 23 states. [2019-05-23 11:20:37,748 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:37,748 INFO L146 ILogger]: Finished difference Result 394 states and 399 transitions. [2019-05-23 11:20:37,749 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:20:37,749 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 170 [2019-05-23 11:20:37,749 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:37,751 INFO L146 ILogger]: With dead ends: 394 [2019-05-23 11:20:37,751 INFO L146 ILogger]: Without dead ends: 323 [2019-05-23 11:20:37,752 INFO L146 ILogger]: 0 DeclaredPredicates, 181 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=254, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:37,753 INFO L146 ILogger]: Start minimizeSevpa. Operand 323 states. [2019-05-23 11:20:37,756 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 323 to 186. [2019-05-23 11:20:37,757 INFO L146 ILogger]: Start removeUnreachable. Operand 186 states. [2019-05-23 11:20:37,757 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 186 states to 186 states and 188 transitions. [2019-05-23 11:20:37,758 INFO L146 ILogger]: Start accepts. Automaton has 186 states and 188 transitions. Word has length 170 [2019-05-23 11:20:37,758 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:37,758 INFO L146 ILogger]: Abstraction has 186 states and 188 transitions. [2019-05-23 11:20:37,758 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:20:37,758 INFO L146 ILogger]: Start isEmpty. Operand 186 states and 188 transitions. [2019-05-23 11:20:37,759 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 182 [2019-05-23 11:20:37,759 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:37,759 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:37,760 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:37,760 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:37,760 INFO L146 ILogger]: Analyzing trace with hash -1922941191, now seen corresponding path program 18 times [2019-05-23 11:20:37,760 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:37,760 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:37,761 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,761 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:37,761 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,778 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:38,068 INFO L146 ILogger]: Checked inductivity of 1250 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:20:38,069 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:38,069 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:38,077 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:48,676 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2019-05-23 11:20:48,676 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:48,686 INFO L146 ILogger]: Trace formula consists of 280 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:20:48,688 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:48,763 INFO L146 ILogger]: Checked inductivity of 1250 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:20:48,785 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:48,785 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-05-23 11:20:48,786 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:20:48,786 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:20:48,786 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:48,786 INFO L146 ILogger]: Start difference. First operand 186 states and 188 transitions. Second operand 24 states. [2019-05-23 11:20:49,030 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:49,030 INFO L146 ILogger]: Finished difference Result 405 states and 409 transitions. [2019-05-23 11:20:49,031 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:20:49,031 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 181 [2019-05-23 11:20:49,031 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:49,032 INFO L146 ILogger]: With dead ends: 405 [2019-05-23 11:20:49,032 INFO L146 ILogger]: Without dead ends: 328 [2019-05-23 11:20:49,033 INFO L146 ILogger]: 0 DeclaredPredicates, 203 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:49,033 INFO L146 ILogger]: Start minimizeSevpa. Operand 328 states. [2019-05-23 11:20:49,036 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 328 to 191. [2019-05-23 11:20:49,037 INFO L146 ILogger]: Start removeUnreachable. Operand 191 states. [2019-05-23 11:20:49,037 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2019-05-23 11:20:49,037 INFO L146 ILogger]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 181 [2019-05-23 11:20:49,038 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:49,038 INFO L146 ILogger]: Abstraction has 191 states and 193 transitions. [2019-05-23 11:20:49,038 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:20:49,038 INFO L146 ILogger]: Start isEmpty. Operand 191 states and 193 transitions. [2019-05-23 11:20:49,039 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 187 [2019-05-23 11:20:49,039 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:49,039 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:49,039 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:49,040 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:49,040 INFO L146 ILogger]: Analyzing trace with hash 1359602992, now seen corresponding path program 19 times [2019-05-23 11:20:49,040 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:49,040 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:49,041 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,041 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:49,041 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,060 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:49,351 INFO L146 ILogger]: Checked inductivity of 1351 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2019-05-23 11:20:49,351 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:49,351 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:49,362 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:49,408 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:49,409 INFO L146 ILogger]: Trace formula consists of 287 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:20:49,410 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:49,527 INFO L146 ILogger]: Checked inductivity of 1351 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:20:49,546 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:49,546 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24] total 25 [2019-05-23 11:20:49,546 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:20:49,547 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:20:49,547 INFO L146 ILogger]: CoverageRelationStatistics Valid=299, Invalid=301, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:20:49,547 INFO L146 ILogger]: Start difference. First operand 191 states and 193 transitions. Second operand 25 states. [2019-05-23 11:20:49,851 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:49,851 INFO L146 ILogger]: Finished difference Result 429 states and 434 transitions. [2019-05-23 11:20:49,854 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:20:49,854 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 186 [2019-05-23 11:20:49,855 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:49,857 INFO L146 ILogger]: With dead ends: 429 [2019-05-23 11:20:49,857 INFO L146 ILogger]: Without dead ends: 352 [2019-05-23 11:20:49,858 INFO L146 ILogger]: 0 DeclaredPredicates, 198 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=299, Invalid=301, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:20:49,859 INFO L146 ILogger]: Start minimizeSevpa. Operand 352 states. [2019-05-23 11:20:49,863 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 352 to 202. [2019-05-23 11:20:49,863 INFO L146 ILogger]: Start removeUnreachable. Operand 202 states. [2019-05-23 11:20:49,864 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 202 states to 202 states and 204 transitions. [2019-05-23 11:20:49,864 INFO L146 ILogger]: Start accepts. Automaton has 202 states and 204 transitions. Word has length 186 [2019-05-23 11:20:49,864 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:49,864 INFO L146 ILogger]: Abstraction has 202 states and 204 transitions. [2019-05-23 11:20:49,864 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:20:49,864 INFO L146 ILogger]: Start isEmpty. Operand 202 states and 204 transitions. [2019-05-23 11:20:49,865 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 198 [2019-05-23 11:20:49,865 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:49,866 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:49,866 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:49,866 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:49,866 INFO L146 ILogger]: Analyzing trace with hash -1202946442, now seen corresponding path program 20 times [2019-05-23 11:20:49,866 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:49,867 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:49,867 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,867 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:49,868 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,886 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,324 INFO L146 ILogger]: Checked inductivity of 1518 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2019-05-23 11:20:50,325 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:50,325 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:50,334 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:50,383 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:50,383 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,384 INFO L146 ILogger]: Trace formula consists of 303 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:20:50,387 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:50,430 INFO L146 ILogger]: Checked inductivity of 1518 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2019-05-23 11:20:50,457 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:50,457 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-05-23 11:20:50,457 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:20:50,458 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:20:50,458 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:50,458 INFO L146 ILogger]: Start difference. First operand 202 states and 204 transitions. Second operand 26 states. [2019-05-23 11:20:50,734 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:50,734 INFO L146 ILogger]: Finished difference Result 440 states and 444 transitions. [2019-05-23 11:20:50,734 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:20:50,734 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 197 [2019-05-23 11:20:50,735 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:50,737 INFO L146 ILogger]: With dead ends: 440 [2019-05-23 11:20:50,737 INFO L146 ILogger]: Without dead ends: 357 [2019-05-23 11:20:50,738 INFO L146 ILogger]: 0 DeclaredPredicates, 221 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:50,739 INFO L146 ILogger]: Start minimizeSevpa. Operand 357 states. [2019-05-23 11:20:50,742 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 357 to 207. [2019-05-23 11:20:50,743 INFO L146 ILogger]: Start removeUnreachable. Operand 207 states. [2019-05-23 11:20:50,743 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2019-05-23 11:20:50,743 INFO L146 ILogger]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 197 [2019-05-23 11:20:50,744 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:50,744 INFO L146 ILogger]: Abstraction has 207 states and 209 transitions. [2019-05-23 11:20:50,744 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:20:50,744 INFO L146 ILogger]: Start isEmpty. Operand 207 states and 209 transitions. [2019-05-23 11:20:50,745 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 203 [2019-05-23 11:20:50,745 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:50,745 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:50,745 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:50,746 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:50,746 INFO L146 ILogger]: Analyzing trace with hash -932784467, now seen corresponding path program 21 times [2019-05-23 11:20:50,746 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:50,746 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:50,747 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,747 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:50,747 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,765 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,977 INFO L146 ILogger]: Checked inductivity of 1629 backedges. 0 proven. 341 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2019-05-23 11:20:50,978 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:50,978 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:50,987 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:52,369 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-05-23 11:20:52,369 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:52,372 INFO L146 ILogger]: Trace formula consists of 226 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:20:52,374 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:52,522 INFO L146 ILogger]: Checked inductivity of 1629 backedges. 0 proven. 341 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2019-05-23 11:20:52,558 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:52,558 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:20:52,559 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:20:52,560 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:20:52,560 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:52,560 INFO L146 ILogger]: Start difference. First operand 207 states and 209 transitions. Second operand 15 states. [2019-05-23 11:20:53,543 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:53,544 INFO L146 ILogger]: Finished difference Result 387 states and 390 transitions. [2019-05-23 11:20:53,544 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:20:53,544 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 202 [2019-05-23 11:20:53,545 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:53,547 INFO L146 ILogger]: With dead ends: 387 [2019-05-23 11:20:53,547 INFO L146 ILogger]: Without dead ends: 372 [2019-05-23 11:20:53,548 INFO L146 ILogger]: 0 DeclaredPredicates, 215 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:53,549 INFO L146 ILogger]: Start minimizeSevpa. Operand 372 states. [2019-05-23 11:20:53,553 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 372 to 213. [2019-05-23 11:20:53,553 INFO L146 ILogger]: Start removeUnreachable. Operand 213 states. [2019-05-23 11:20:53,553 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2019-05-23 11:20:53,553 INFO L146 ILogger]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 202 [2019-05-23 11:20:53,554 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:53,554 INFO L146 ILogger]: Abstraction has 213 states and 215 transitions. [2019-05-23 11:20:53,554 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:20:53,554 INFO L146 ILogger]: Start isEmpty. Operand 213 states and 215 transitions. [2019-05-23 11:20:53,555 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:20:53,555 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:53,556 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:53,556 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:53,556 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:53,556 INFO L146 ILogger]: Analyzing trace with hash -1233355574, now seen corresponding path program 22 times [2019-05-23 11:20:53,556 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:53,556 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:53,557 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:53,557 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:53,557 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:53,579 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:53,951 INFO L146 ILogger]: Checked inductivity of 1696 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:20:53,951 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:53,952 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:53,962 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:54,540 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:54,540 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:54,543 INFO L146 ILogger]: Trace formula consists of 319 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:20:54,545 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:54,628 INFO L146 ILogger]: Checked inductivity of 1696 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:20:54,648 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:54,648 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:20:54,649 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:20:54,649 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:20:54,649 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:20:54,649 INFO L146 ILogger]: Start difference. First operand 213 states and 215 transitions. Second operand 27 states. [2019-05-23 11:20:54,942 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:54,942 INFO L146 ILogger]: Finished difference Result 470 states and 474 transitions. [2019-05-23 11:20:54,942 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:20:54,943 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 208 [2019-05-23 11:20:54,943 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:54,944 INFO L146 ILogger]: With dead ends: 470 [2019-05-23 11:20:54,944 INFO L146 ILogger]: Without dead ends: 381 [2019-05-23 11:20:54,944 INFO L146 ILogger]: 0 DeclaredPredicates, 233 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:20:54,945 INFO L146 ILogger]: Start minimizeSevpa. Operand 381 states. [2019-05-23 11:20:54,949 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 381 to 218. [2019-05-23 11:20:54,949 INFO L146 ILogger]: Start removeUnreachable. Operand 218 states. [2019-05-23 11:20:54,949 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 218 states to 218 states and 220 transitions. [2019-05-23 11:20:54,949 INFO L146 ILogger]: Start accepts. Automaton has 218 states and 220 transitions. Word has length 208 [2019-05-23 11:20:54,950 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:54,950 INFO L146 ILogger]: Abstraction has 218 states and 220 transitions. [2019-05-23 11:20:54,950 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:20:54,950 INFO L146 ILogger]: Start isEmpty. Operand 218 states and 220 transitions. [2019-05-23 11:20:54,951 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 214 [2019-05-23 11:20:54,951 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:54,951 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:54,952 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:54,952 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:54,952 INFO L146 ILogger]: Analyzing trace with hash 707111987, now seen corresponding path program 23 times [2019-05-23 11:20:54,952 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:54,952 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:54,953 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:54,953 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:54,953 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:54,974 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:55,773 INFO L146 ILogger]: Checked inductivity of 1812 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:20:55,773 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:55,773 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:55,783 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1