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_password_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:19:17,348 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:19:17,350 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:19:17,368 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:19:17,368 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:19:17,371 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:19:17,372 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:19:17,375 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:19:17,378 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:19:17,379 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:19:17,380 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:19:17,381 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:19:17,382 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:19:17,389 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:19:17,390 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:19:17,391 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:19:17,392 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:19:17,395 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:19:17,397 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:19:17,398 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:19:17,399 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:19:17,400 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:19:17,402 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:19:17,403 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:19:17,403 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:19:17,404 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:19:17,404 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:19:17,405 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:19:17,405 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:19:17,406 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:19:17,407 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:19:17,408 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:19:17,410 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:19:17,410 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:19:17,411 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:19:17,411 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:19:17,411 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:19:17,412 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:19:17,413 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:19:17,413 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:19:17,441 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:19:17,442 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:19:17,443 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:19:17,443 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:19:17,443 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:19:17,444 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:19:17,446 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:19:17,446 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:19:17,446 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:19:17,446 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:19:17,447 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:19:17,447 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:19:17,447 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:19:17,447 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:19:17,447 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:19:17,448 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:19:17,448 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:19:17,448 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:19:17,448 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:19:17,449 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:19:17,449 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:19:17,449 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:19:17,449 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:19:17,449 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:19:17,450 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:19:17,450 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:19:17,450 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:19:17,450 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:19:17,450 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 11:19:17,493 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:19:17,507 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:19:17,513 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:19:17,514 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:19:17,514 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:19:17,515 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_password_true-unreach-call_ground.i [2019-05-23 11:19:17,587 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def270847/c1b906383cc0492285961834728ab7a6/FLAGff25f22a5 [2019-05-23 11:19:18,019 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:19:18,020 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_password_true-unreach-call_ground.i [2019-05-23 11:19:18,025 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def270847/c1b906383cc0492285961834728ab7a6/FLAGff25f22a5 [2019-05-23 11:19:18,410 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def270847/c1b906383cc0492285961834728ab7a6 [2019-05-23 11:19:18,420 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:19:18,422 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:19:18,423 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:18,423 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:19:18,426 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:19:18,427 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:18" (1/1) ... [2019-05-23 11:19:18,430 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bcf6626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18, skipping insertion in model container [2019-05-23 11:19:18,430 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:18" (1/1) ... [2019-05-23 11:19:18,438 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:19:18,459 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:19:18,656 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:18,661 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:19:18,681 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:18,702 INFO L146 ILogger]: Completed translation [2019-05-23 11:19:18,703 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18 WrapperNode [2019-05-23 11:19:18,703 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:18,704 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:18,704 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:19:18,705 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:19:18,714 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18" (1/1) ... [2019-05-23 11:19:18,722 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18" (1/1) ... [2019-05-23 11:19:18,749 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:18,750 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:19:18,751 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:19:18,751 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:19:18,761 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18" (1/1) ... [2019-05-23 11:19:18,762 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18" (1/1) ... [2019-05-23 11:19:18,763 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18" (1/1) ... [2019-05-23 11:19:18,764 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18" (1/1) ... [2019-05-23 11:19:18,773 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18" (1/1) ... [2019-05-23 11:19:18,779 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18" (1/1) ... [2019-05-23 11:19:18,783 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18" (1/1) ... [2019-05-23 11:19:18,791 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:19:18,791 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:19:18,791 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:19:18,792 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:19:18,793 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18" (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 11:19:18,945 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:19:18,945 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:19:18,946 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:19:18,946 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:19:18,946 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:19:19,447 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:19:19,448 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:19:19,449 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:19 BoogieIcfgContainer [2019-05-23 11:19:19,449 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:19:19,450 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:19:19,450 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:19:19,453 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:19:19,453 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:19:18" (1/3) ... [2019-05-23 11:19:19,454 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dbcca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:19, skipping insertion in model container [2019-05-23 11:19:19,455 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:18" (2/3) ... [2019-05-23 11:19:19,455 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dbcca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:19, skipping insertion in model container [2019-05-23 11:19:19,455 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:19" (3/3) ... [2019-05-23 11:19:19,457 INFO L146 ILogger]: Analyzing ICFG standard_password_true-unreach-call_ground.i [2019-05-23 11:19:19,465 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:19:19,473 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:19:19,490 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:19:19,517 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:19:19,518 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:19:19,518 INFO L146 ILogger]: Hoare is true [2019-05-23 11:19:19,518 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:19:19,518 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:19:19,519 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:19:19,519 INFO L146 ILogger]: Difference is false [2019-05-23 11:19:19,519 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:19:19,519 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:19:19,533 INFO L146 ILogger]: Start isEmpty. Operand 46 states. [2019-05-23 11:19:19,540 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:19:19,540 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:19,541 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 11:19:19,543 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:19,548 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:19,548 INFO L146 ILogger]: Analyzing trace with hash -464354450, now seen corresponding path program 1 times [2019-05-23 11:19:19,549 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:19,550 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:19,596 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:19,596 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:19,596 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:19,634 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:19,668 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 11:19:19,671 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:19,672 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:19:19,674 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:19:19,684 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:19:19,685 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:19:19,687 INFO L146 ILogger]: Start difference. First operand 46 states. Second operand 2 states. [2019-05-23 11:19:19,706 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:19,706 INFO L146 ILogger]: Finished difference Result 71 states and 80 transitions. [2019-05-23 11:19:19,706 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:19:19,708 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:19:19,708 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:19,718 INFO L146 ILogger]: With dead ends: 71 [2019-05-23 11:19:19,718 INFO L146 ILogger]: Without dead ends: 38 [2019-05-23 11:19:19,722 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:19:19,737 INFO L146 ILogger]: Start minimizeSevpa. Operand 38 states. [2019-05-23 11:19:19,750 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-05-23 11:19:19,751 INFO L146 ILogger]: Start removeUnreachable. Operand 38 states. [2019-05-23 11:19:19,752 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-05-23 11:19:19,754 INFO L146 ILogger]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 21 [2019-05-23 11:19:19,754 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:19,754 INFO L146 ILogger]: Abstraction has 38 states and 40 transitions. [2019-05-23 11:19:19,755 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:19:19,755 INFO L146 ILogger]: Start isEmpty. Operand 38 states and 40 transitions. [2019-05-23 11:19:19,756 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:19:19,756 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:19,756 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 11:19:19,756 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:19,757 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:19,757 INFO L146 ILogger]: Analyzing trace with hash 1248958466, now seen corresponding path program 1 times [2019-05-23 11:19:19,757 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:19,757 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:19,758 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:19,758 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:19,758 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:19,771 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:19,843 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 11:19:19,843 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:19,843 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:19:19,845 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:19:19,845 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:19:19,847 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:19,847 INFO L146 ILogger]: Start difference. First operand 38 states and 40 transitions. Second operand 3 states. [2019-05-23 11:19:19,918 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:19,918 INFO L146 ILogger]: Finished difference Result 66 states and 70 transitions. [2019-05-23 11:19:19,918 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:19:19,919 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:19:19,919 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:19,920 INFO L146 ILogger]: With dead ends: 66 [2019-05-23 11:19:19,920 INFO L146 ILogger]: Without dead ends: 49 [2019-05-23 11:19:19,921 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 11:19:19,921 INFO L146 ILogger]: Start minimizeSevpa. Operand 49 states. [2019-05-23 11:19:19,926 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 49 to 39. [2019-05-23 11:19:19,926 INFO L146 ILogger]: Start removeUnreachable. Operand 39 states. [2019-05-23 11:19:19,927 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2019-05-23 11:19:19,927 INFO L146 ILogger]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 21 [2019-05-23 11:19:19,928 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:19,928 INFO L146 ILogger]: Abstraction has 39 states and 41 transitions. [2019-05-23 11:19:19,928 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:19:19,928 INFO L146 ILogger]: Start isEmpty. Operand 39 states and 41 transitions. [2019-05-23 11:19:19,929 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:19:19,929 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:19,929 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:19,930 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:19,930 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:19,930 INFO L146 ILogger]: Analyzing trace with hash 20177808, now seen corresponding path program 1 times [2019-05-23 11:19:19,930 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:19,930 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:19,931 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:19,932 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:19,932 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:19,951 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:20,065 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:20,066 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:20,066 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 11:19:20,082 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:20,134 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:20,137 INFO L146 ILogger]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:19:20,144 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:20,326 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:20,348 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:20,349 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:19:20,349 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:19:20,349 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:19:20,350 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:20,350 INFO L146 ILogger]: Start difference. First operand 39 states and 41 transitions. Second operand 7 states. [2019-05-23 11:19:20,533 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:20,533 INFO L146 ILogger]: Finished difference Result 78 states and 83 transitions. [2019-05-23 11:19:20,534 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:19:20,534 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 30 [2019-05-23 11:19:20,535 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:20,536 INFO L146 ILogger]: With dead ends: 78 [2019-05-23 11:19:20,536 INFO L146 ILogger]: Without dead ends: 61 [2019-05-23 11:19:20,537 INFO L146 ILogger]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:19:20,537 INFO L146 ILogger]: Start minimizeSevpa. Operand 61 states. [2019-05-23 11:19:20,542 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 61 to 51. [2019-05-23 11:19:20,543 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:19:20,544 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2019-05-23 11:19:20,544 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 30 [2019-05-23 11:19:20,544 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:20,544 INFO L146 ILogger]: Abstraction has 51 states and 54 transitions. [2019-05-23 11:19:20,545 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:19:20,545 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 54 transitions. [2019-05-23 11:19:20,546 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:19:20,546 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:20,546 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:20,546 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:20,547 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:20,547 INFO L146 ILogger]: Analyzing trace with hash -913131582, now seen corresponding path program 2 times [2019-05-23 11:19:20,547 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:20,547 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:20,548 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:20,548 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:20,548 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:20,571 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:20,743 INFO L146 ILogger]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:20,743 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:20,744 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 11:19:20,760 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:20,787 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:20,787 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:20,788 INFO L146 ILogger]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:19:20,792 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:20,845 INFO L146 ILogger]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:20,868 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:20,868 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-05-23 11:19:20,869 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:19:20,869 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:19:20,869 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:19:20,870 INFO L146 ILogger]: Start difference. First operand 51 states and 54 transitions. Second operand 9 states. [2019-05-23 11:19:21,102 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:21,102 INFO L146 ILogger]: Finished difference Result 90 states and 96 transitions. [2019-05-23 11:19:21,108 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:19:21,108 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 39 [2019-05-23 11:19:21,108 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:21,109 INFO L146 ILogger]: With dead ends: 90 [2019-05-23 11:19:21,109 INFO L146 ILogger]: Without dead ends: 73 [2019-05-23 11:19:21,110 INFO L146 ILogger]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:21,111 INFO L146 ILogger]: Start minimizeSevpa. Operand 73 states. [2019-05-23 11:19:21,116 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 73 to 63. [2019-05-23 11:19:21,116 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:19:21,117 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2019-05-23 11:19:21,118 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 39 [2019-05-23 11:19:21,118 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:21,118 INFO L146 ILogger]: Abstraction has 63 states and 67 transitions. [2019-05-23 11:19:21,118 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:19:21,118 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 67 transitions. [2019-05-23 11:19:21,120 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 49 [2019-05-23 11:19:21,120 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:21,120 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:21,120 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:21,121 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:21,121 INFO L146 ILogger]: Analyzing trace with hash 318405584, now seen corresponding path program 3 times [2019-05-23 11:19:21,121 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:21,121 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:21,122 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:21,122 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:21,122 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:21,142 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:21,378 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:21,378 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:21,378 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 11:19:21,396 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:21,479 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:19:21,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:21,480 INFO L146 ILogger]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:19:21,484 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:21,615 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:21,636 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:21,636 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:19:21,638 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:19:21,638 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:19:21,638 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:19:21,638 INFO L146 ILogger]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2019-05-23 11:19:21,954 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:21,954 INFO L146 ILogger]: Finished difference Result 102 states and 109 transitions. [2019-05-23 11:19:21,955 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:19:21,955 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 48 [2019-05-23 11:19:21,955 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:21,956 INFO L146 ILogger]: With dead ends: 102 [2019-05-23 11:19:21,956 INFO L146 ILogger]: Without dead ends: 85 [2019-05-23 11:19:21,957 INFO L146 ILogger]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:19:21,958 INFO L146 ILogger]: Start minimizeSevpa. Operand 85 states. [2019-05-23 11:19:21,963 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 85 to 75. [2019-05-23 11:19:21,963 INFO L146 ILogger]: Start removeUnreachable. Operand 75 states. [2019-05-23 11:19:21,964 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2019-05-23 11:19:21,964 INFO L146 ILogger]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 48 [2019-05-23 11:19:21,965 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:21,965 INFO L146 ILogger]: Abstraction has 75 states and 80 transitions. [2019-05-23 11:19:21,965 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:19:21,965 INFO L146 ILogger]: Start isEmpty. Operand 75 states and 80 transitions. [2019-05-23 11:19:21,967 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:19:21,967 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:21,967 INFO L146 ILogger]: trace histogram [4, 4, 4, 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 11:19:21,967 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:21,968 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:21,968 INFO L146 ILogger]: Analyzing trace with hash 68380546, now seen corresponding path program 4 times [2019-05-23 11:19:21,968 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:21,968 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:21,969 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:21,969 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:21,969 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:21,986 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:22,127 INFO L146 ILogger]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:22,127 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:22,128 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 11:19:22,136 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:22,173 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:22,173 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:22,175 INFO L146 ILogger]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:19:22,179 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:22,566 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:22,567 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2019-05-23 11:19:22,569 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:22,628 INFO L146 ILogger]: treesize reduction 13, result has 18.8 percent of original size [2019-05-23 11:19:22,629 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:22,629 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2019-05-23 11:19:22,695 INFO L146 ILogger]: Checked inductivity of 58 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:19:22,726 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:22,726 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2019-05-23 11:19:22,727 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:19:22,727 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:19:22,728 INFO L146 ILogger]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:19:22,728 INFO L146 ILogger]: Start difference. First operand 75 states and 80 transitions. Second operand 22 states. [2019-05-23 11:19:25,309 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:25,309 INFO L146 ILogger]: Finished difference Result 294 states and 317 transitions. [2019-05-23 11:19:25,316 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-05-23 11:19:25,316 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 57 [2019-05-23 11:19:25,317 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:25,318 INFO L146 ILogger]: With dead ends: 294 [2019-05-23 11:19:25,318 INFO L146 ILogger]: Without dead ends: 277 [2019-05-23 11:19:25,321 INFO L146 ILogger]: 0 DeclaredPredicates, 115 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1419 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=764, Invalid=4066, Unknown=0, NotChecked=0, Total=4830 [2019-05-23 11:19:25,322 INFO L146 ILogger]: Start minimizeSevpa. Operand 277 states. [2019-05-23 11:19:25,333 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 277 to 149. [2019-05-23 11:19:25,334 INFO L146 ILogger]: Start removeUnreachable. Operand 149 states. [2019-05-23 11:19:25,335 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2019-05-23 11:19:25,336 INFO L146 ILogger]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 57 [2019-05-23 11:19:25,336 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:25,336 INFO L146 ILogger]: Abstraction has 149 states and 160 transitions. [2019-05-23 11:19:25,336 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:19:25,336 INFO L146 ILogger]: Start isEmpty. Operand 149 states and 160 transitions. [2019-05-23 11:19:25,338 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:19:25,338 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:25,338 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 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 11:19:25,339 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:25,339 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:25,339 INFO L146 ILogger]: Analyzing trace with hash 1729206222, now seen corresponding path program 1 times [2019-05-23 11:19:25,339 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:25,339 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:25,340 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,341 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:25,341 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,352 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:25,399 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:19:25,400 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:25,400 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:19:25,400 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:19:25,400 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:19:25,401 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:25,401 INFO L146 ILogger]: Start difference. First operand 149 states and 160 transitions. Second operand 3 states. [2019-05-23 11:19:25,424 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:25,424 INFO L146 ILogger]: Finished difference Result 213 states and 228 transitions. [2019-05-23 11:19:25,424 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:19:25,424 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 67 [2019-05-23 11:19:25,425 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:25,425 INFO L146 ILogger]: With dead ends: 213 [2019-05-23 11:19:25,426 INFO L146 ILogger]: Without dead ends: 79 [2019-05-23 11:19:25,428 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 11:19:25,429 INFO L146 ILogger]: Start minimizeSevpa. Operand 79 states. [2019-05-23 11:19:25,435 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 79 to 79. [2019-05-23 11:19:25,436 INFO L146 ILogger]: Start removeUnreachable. Operand 79 states. [2019-05-23 11:19:25,437 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2019-05-23 11:19:25,437 INFO L146 ILogger]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 67 [2019-05-23 11:19:25,437 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:25,437 INFO L146 ILogger]: Abstraction has 79 states and 80 transitions. [2019-05-23 11:19:25,437 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:19:25,438 INFO L146 ILogger]: Start isEmpty. Operand 79 states and 80 transitions. [2019-05-23 11:19:25,439 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:19:25,439 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:25,439 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:25,439 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:25,439 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:25,440 INFO L146 ILogger]: Analyzing trace with hash 935967384, now seen corresponding path program 1 times [2019-05-23 11:19:25,440 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:25,440 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:25,441 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,441 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:25,441 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,458 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:25,639 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:25,639 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:25,639 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 11:19:25,649 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:25,670 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:25,671 INFO L146 ILogger]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:19:25,675 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:25,711 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:25,729 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:25,729 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:19:25,730 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:19:25,730 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:19:25,730 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:19:25,731 INFO L146 ILogger]: Start difference. First operand 79 states and 80 transitions. Second operand 15 states. [2019-05-23 11:19:25,956 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:25,956 INFO L146 ILogger]: Finished difference Result 119 states and 121 transitions. [2019-05-23 11:19:25,956 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:19:25,957 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 78 [2019-05-23 11:19:25,957 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:25,958 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:19:25,959 INFO L146 ILogger]: Without dead ends: 95 [2019-05-23 11:19:25,960 INFO L146 ILogger]: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:19:25,960 INFO L146 ILogger]: Start minimizeSevpa. Operand 95 states. [2019-05-23 11:19:25,964 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 95 to 88. [2019-05-23 11:19:25,965 INFO L146 ILogger]: Start removeUnreachable. Operand 88 states. [2019-05-23 11:19:25,965 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2019-05-23 11:19:25,966 INFO L146 ILogger]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 78 [2019-05-23 11:19:25,967 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:25,967 INFO L146 ILogger]: Abstraction has 88 states and 89 transitions. [2019-05-23 11:19:25,967 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:19:25,968 INFO L146 ILogger]: Start isEmpty. Operand 88 states and 89 transitions. [2019-05-23 11:19:25,969 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 88 [2019-05-23 11:19:25,969 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:25,969 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:25,969 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:25,970 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:25,970 INFO L146 ILogger]: Analyzing trace with hash 1754309322, now seen corresponding path program 2 times [2019-05-23 11:19:25,970 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:25,970 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:25,971 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,971 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:25,971 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,985 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:26,157 INFO L146 ILogger]: Checked inductivity of 148 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:26,158 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:26,158 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 11:19:26,166 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:26,211 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:26,212 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:26,213 INFO L146 ILogger]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:19:26,216 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:26,590 INFO L146 ILogger]: Checked inductivity of 148 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:26,621 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:26,621 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:19:26,622 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:19:26,622 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:19:26,622 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:19:26,623 INFO L146 ILogger]: Start difference. First operand 88 states and 89 transitions. Second operand 17 states. [2019-05-23 11:19:26,868 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:26,869 INFO L146 ILogger]: Finished difference Result 128 states and 130 transitions. [2019-05-23 11:19:26,869 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:19:26,869 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 87 [2019-05-23 11:19:26,869 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:26,870 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:19:26,870 INFO L146 ILogger]: Without dead ends: 104 [2019-05-23 11:19:26,871 INFO L146 ILogger]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:19:26,872 INFO L146 ILogger]: Start minimizeSevpa. Operand 104 states. [2019-05-23 11:19:26,876 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 104 to 97. [2019-05-23 11:19:26,876 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:19:26,876 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2019-05-23 11:19:26,877 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 87 [2019-05-23 11:19:26,877 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:26,877 INFO L146 ILogger]: Abstraction has 97 states and 98 transitions. [2019-05-23 11:19:26,877 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:19:26,877 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 98 transitions. [2019-05-23 11:19:26,879 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 97 [2019-05-23 11:19:26,879 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:26,879 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 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 11:19:26,879 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:26,879 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:26,880 INFO L146 ILogger]: Analyzing trace with hash -77147432, now seen corresponding path program 3 times [2019-05-23 11:19:26,880 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:26,880 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:26,881 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:26,881 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:26,881 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:26,895 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:27,181 INFO L146 ILogger]: Checked inductivity of 203 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:27,182 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:27,182 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 11:19:27,191 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:27,228 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:19:27,228 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:27,229 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:19:27,234 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:27,309 INFO L146 ILogger]: Checked inductivity of 203 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:27,335 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:27,336 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:19:27,336 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:19:27,336 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:19:27,336 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:19:27,337 INFO L146 ILogger]: Start difference. First operand 97 states and 98 transitions. Second operand 19 states. [2019-05-23 11:19:27,726 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:27,726 INFO L146 ILogger]: Finished difference Result 137 states and 139 transitions. [2019-05-23 11:19:27,726 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:19:27,727 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 96 [2019-05-23 11:19:27,727 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:27,728 INFO L146 ILogger]: With dead ends: 137 [2019-05-23 11:19:27,729 INFO L146 ILogger]: Without dead ends: 113 [2019-05-23 11:19:27,730 INFO L146 ILogger]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:19:27,730 INFO L146 ILogger]: Start minimizeSevpa. Operand 113 states. [2019-05-23 11:19:27,734 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 113 to 106. [2019-05-23 11:19:27,734 INFO L146 ILogger]: Start removeUnreachable. Operand 106 states. [2019-05-23 11:19:27,735 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2019-05-23 11:19:27,735 INFO L146 ILogger]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 96 [2019-05-23 11:19:27,736 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:27,736 INFO L146 ILogger]: Abstraction has 106 states and 107 transitions. [2019-05-23 11:19:27,736 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:19:27,736 INFO L146 ILogger]: Start isEmpty. Operand 106 states and 107 transitions. [2019-05-23 11:19:27,737 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:19:27,737 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:27,738 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 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 11:19:27,738 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:27,738 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:27,738 INFO L146 ILogger]: Analyzing trace with hash 1519047306, now seen corresponding path program 4 times [2019-05-23 11:19:27,738 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:27,739 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:27,739 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:27,739 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:27,740 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:27,754 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:27,975 INFO L146 ILogger]: Checked inductivity of 267 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:27,976 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:27,976 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 11:19:27,984 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:28,022 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:28,022 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:28,023 INFO L146 ILogger]: Trace formula consists of 151 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:19:28,035 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:28,327 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:28,327 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:19:28,328 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:28,330 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:28,330 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:28,331 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:19:28,431 INFO L146 ILogger]: Checked inductivity of 267 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-05-23 11:19:28,450 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:28,450 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2019-05-23 11:19:28,451 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:19:28,451 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:19:28,451 INFO L146 ILogger]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:19:28,452 INFO L146 ILogger]: Start difference. First operand 106 states and 107 transitions. Second operand 34 states. [2019-05-23 11:19:30,400 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:30,400 INFO L146 ILogger]: Finished difference Result 168 states and 171 transitions. [2019-05-23 11:19:30,407 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-05-23 11:19:30,407 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 105 [2019-05-23 11:19:30,407 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:30,408 INFO L146 ILogger]: With dead ends: 168 [2019-05-23 11:19:30,408 INFO L146 ILogger]: Without dead ends: 144 [2019-05-23 11:19:30,410 INFO L146 ILogger]: 0 DeclaredPredicates, 160 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=804, Invalid=4166, Unknown=0, NotChecked=0, Total=4970 [2019-05-23 11:19:30,411 INFO L146 ILogger]: Start minimizeSevpa. Operand 144 states. [2019-05-23 11:19:30,419 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 144 to 127. [2019-05-23 11:19:30,419 INFO L146 ILogger]: Start removeUnreachable. Operand 127 states. [2019-05-23 11:19:30,420 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2019-05-23 11:19:30,420 INFO L146 ILogger]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 105 [2019-05-23 11:19:30,421 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:30,421 INFO L146 ILogger]: Abstraction has 127 states and 128 transitions. [2019-05-23 11:19:30,421 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:19:30,421 INFO L146 ILogger]: Start isEmpty. Operand 127 states and 128 transitions. [2019-05-23 11:19:30,428 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:19:30,429 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:30,429 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 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] [2019-05-23 11:19:30,429 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:30,430 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:30,433 INFO L146 ILogger]: Analyzing trace with hash -1795537504, now seen corresponding path program 5 times [2019-05-23 11:19:30,433 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:30,433 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:30,434 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:30,434 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:30,434 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:30,449 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:31,095 INFO L146 ILogger]: Checked inductivity of 359 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:31,095 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:31,095 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 11:19:31,104 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:31,140 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:19:31,141 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:31,142 INFO L146 ILogger]: Trace formula consists of 210 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:19:31,145 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:31,420 INFO L146 ILogger]: Checked inductivity of 359 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:31,439 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:31,439 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:19:31,440 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:19:31,440 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:19:31,441 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:19:31,441 INFO L146 ILogger]: Start difference. First operand 127 states and 128 transitions. Second operand 23 states. [2019-05-23 11:19:31,813 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:31,814 INFO L146 ILogger]: Finished difference Result 179 states and 181 transitions. [2019-05-23 11:19:31,814 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:19:31,814 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 126 [2019-05-23 11:19:31,814 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:31,815 INFO L146 ILogger]: With dead ends: 179 [2019-05-23 11:19:31,816 INFO L146 ILogger]: Without dead ends: 143 [2019-05-23 11:19:31,817 INFO L146 ILogger]: 0 DeclaredPredicates, 164 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:19:31,817 INFO L146 ILogger]: Start minimizeSevpa. Operand 143 states. [2019-05-23 11:19:31,821 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 143 to 136. [2019-05-23 11:19:31,821 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:19:31,822 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2019-05-23 11:19:31,822 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 126 [2019-05-23 11:19:31,822 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:31,823 INFO L146 ILogger]: Abstraction has 136 states and 137 transitions. [2019-05-23 11:19:31,823 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:19:31,823 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 137 transitions. [2019-05-23 11:19:31,824 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 136 [2019-05-23 11:19:31,824 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:31,824 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 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] [2019-05-23 11:19:31,825 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:31,825 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:31,825 INFO L146 ILogger]: Analyzing trace with hash 2117157330, now seen corresponding path program 6 times [2019-05-23 11:19:31,825 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:31,825 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:31,826 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:31,826 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:31,826 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:31,841 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:32,317 INFO L146 ILogger]: Checked inductivity of 441 backedges. 0 proven. 415 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:19:32,317 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:32,317 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 11:19:32,326 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:32,359 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-05-23 11:19:32,359 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:32,360 INFO L146 ILogger]: Trace formula consists of 182 conjuncts, 43 conjunts are in the unsatisfiable core [2019-05-23 11:19:32,363 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:33,028 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:33,028 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2019-05-23 11:19:33,029 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:33,032 INFO L146 ILogger]: treesize reduction 9, result has 25.0 percent of original size [2019-05-23 11:19:33,032 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:33,033 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2019-05-23 11:19:33,183 INFO L146 ILogger]: Checked inductivity of 441 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2019-05-23 11:19:33,202 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:33,202 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2019-05-23 11:19:33,203 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:19:33,203 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:19:33,204 INFO L146 ILogger]: CoverageRelationStatistics Valid=289, Invalid=1603, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:19:33,204 INFO L146 ILogger]: Start difference. First operand 136 states and 137 transitions. Second operand 44 states. [2019-05-23 11:19:35,618 WARN L146 ILogger]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-05-23 11:19:36,776 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:36,776 INFO L146 ILogger]: Finished difference Result 210 states and 213 transitions. [2019-05-23 11:19:36,777 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:19:36,777 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 135 [2019-05-23 11:19:36,777 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:36,778 INFO L146 ILogger]: With dead ends: 210 [2019-05-23 11:19:36,778 INFO L146 ILogger]: Without dead ends: 174 [2019-05-23 11:19:36,782 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1964 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1201, Invalid=6631, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:19:36,782 INFO L146 ILogger]: Start minimizeSevpa. Operand 174 states. [2019-05-23 11:19:36,786 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 174 to 157. [2019-05-23 11:19:36,786 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:19:36,786 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2019-05-23 11:19:36,787 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 135 [2019-05-23 11:19:36,787 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:36,787 INFO L146 ILogger]: Abstraction has 157 states and 158 transitions. [2019-05-23 11:19:36,787 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:19:36,787 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 158 transitions. [2019-05-23 11:19:36,788 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 157 [2019-05-23 11:19:36,788 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:36,789 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:36,789 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:36,789 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:36,789 INFO L146 ILogger]: Analyzing trace with hash 269212776, now seen corresponding path program 7 times [2019-05-23 11:19:36,789 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:36,790 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:36,791 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:36,791 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:36,791 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:36,813 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:37,129 INFO L146 ILogger]: Checked inductivity of 563 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:19:37,129 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:37,129 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:19:37,138 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:37,177 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:37,178 INFO L146 ILogger]: Trace formula consists of 256 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:19:37,182 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:37,257 INFO L146 ILogger]: Checked inductivity of 563 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:19:37,276 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:37,276 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:19:37,276 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:19:37,277 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:19:37,277 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:19:37,277 INFO L146 ILogger]: Start difference. First operand 157 states and 158 transitions. Second operand 27 states. [2019-05-23 11:19:37,703 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:37,703 INFO L146 ILogger]: Finished difference Result 221 states and 223 transitions. [2019-05-23 11:19:37,704 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:19:37,704 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 156 [2019-05-23 11:19:37,704 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:37,705 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:19:37,705 INFO L146 ILogger]: Without dead ends: 173 [2019-05-23 11:19:37,706 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:19:37,707 INFO L146 ILogger]: Start minimizeSevpa. Operand 173 states. [2019-05-23 11:19:37,710 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 173 to 166. [2019-05-23 11:19:37,711 INFO L146 ILogger]: Start removeUnreachable. Operand 166 states. [2019-05-23 11:19:37,711 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2019-05-23 11:19:37,712 INFO L146 ILogger]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 156 [2019-05-23 11:19:37,712 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:37,712 INFO L146 ILogger]: Abstraction has 166 states and 167 transitions. [2019-05-23 11:19:37,712 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:19:37,712 INFO L146 ILogger]: Start isEmpty. Operand 166 states and 167 transitions. [2019-05-23 11:19:37,713 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 166 [2019-05-23 11:19:37,714 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:37,714 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:37,714 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:37,714 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:37,715 INFO L146 ILogger]: Analyzing trace with hash -1319570150, now seen corresponding path program 8 times [2019-05-23 11:19:37,715 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:37,715 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:37,715 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:37,716 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:37,716 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:37,728 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:38,062 INFO L146 ILogger]: Checked inductivity of 663 backedges. 0 proven. 606 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:19:38,062 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:38,062 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 11:19:38,072 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:38,112 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:38,112 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:38,113 INFO L146 ILogger]: Trace formula consists of 270 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:19:38,115 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:38,181 INFO L146 ILogger]: Checked inductivity of 663 backedges. 0 proven. 606 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:19:38,199 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:38,199 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:19:38,200 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:19:38,200 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:19:38,201 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:19:38,201 INFO L146 ILogger]: Start difference. First operand 166 states and 167 transitions. Second operand 29 states. [2019-05-23 11:19:38,798 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:38,799 INFO L146 ILogger]: Finished difference Result 230 states and 232 transitions. [2019-05-23 11:19:38,800 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:19:38,800 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 165 [2019-05-23 11:19:38,801 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:38,802 INFO L146 ILogger]: With dead ends: 230 [2019-05-23 11:19:38,802 INFO L146 ILogger]: Without dead ends: 182 [2019-05-23 11:19:38,803 INFO L146 ILogger]: 0 DeclaredPredicates, 215 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:19:38,804 INFO L146 ILogger]: Start minimizeSevpa. Operand 182 states. [2019-05-23 11:19:38,808 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 182 to 175. [2019-05-23 11:19:38,809 INFO L146 ILogger]: Start removeUnreachable. Operand 175 states. [2019-05-23 11:19:38,809 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2019-05-23 11:19:38,809 INFO L146 ILogger]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 165 [2019-05-23 11:19:38,810 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:38,810 INFO L146 ILogger]: Abstraction has 175 states and 176 transitions. [2019-05-23 11:19:38,810 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:19:38,810 INFO L146 ILogger]: Start isEmpty. Operand 175 states and 176 transitions. [2019-05-23 11:19:38,812 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 175 [2019-05-23 11:19:38,812 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:38,812 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:38,812 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:38,813 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:38,813 INFO L146 ILogger]: Analyzing trace with hash -195591000, now seen corresponding path program 9 times [2019-05-23 11:19:38,813 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:38,813 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:38,814 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:38,814 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:38,814 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:38,829 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:39,557 INFO L146 ILogger]: Checked inductivity of 772 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:19:39,557 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:39,558 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 11:19:39,567 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:39,622 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2019-05-23 11:19:39,622 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:39,623 INFO L146 ILogger]: Trace formula consists of 284 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:19:39,626 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:39,717 INFO L146 ILogger]: Checked inductivity of 772 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:19:39,736 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:39,736 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:19:39,736 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:19:39,737 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:19:39,737 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:19:39,737 INFO L146 ILogger]: Start difference. First operand 175 states and 176 transitions. Second operand 31 states. [2019-05-23 11:19:40,303 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:40,303 INFO L146 ILogger]: Finished difference Result 239 states and 241 transitions. [2019-05-23 11:19:40,303 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:19:40,303 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 174 [2019-05-23 11:19:40,304 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:40,305 INFO L146 ILogger]: With dead ends: 239 [2019-05-23 11:19:40,305 INFO L146 ILogger]: Without dead ends: 191 [2019-05-23 11:19:40,306 INFO L146 ILogger]: 0 DeclaredPredicates, 228 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:19:40,307 INFO L146 ILogger]: Start minimizeSevpa. Operand 191 states. [2019-05-23 11:19:40,311 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 191 to 184. [2019-05-23 11:19:40,311 INFO L146 ILogger]: Start removeUnreachable. Operand 184 states. [2019-05-23 11:19:40,311 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2019-05-23 11:19:40,312 INFO L146 ILogger]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 174 [2019-05-23 11:19:40,312 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:40,312 INFO L146 ILogger]: Abstraction has 184 states and 185 transitions. [2019-05-23 11:19:40,312 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:19:40,312 INFO L146 ILogger]: Start isEmpty. Operand 184 states and 185 transitions. [2019-05-23 11:19:40,313 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 184 [2019-05-23 11:19:40,313 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:40,314 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:40,314 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:40,314 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:40,314 INFO L146 ILogger]: Analyzing trace with hash -1241082662, now seen corresponding path program 10 times [2019-05-23 11:19:40,314 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:40,314 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:40,315 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:40,315 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:40,315 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:40,328 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:40,671 INFO L146 ILogger]: Checked inductivity of 890 backedges. 0 proven. 833 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:19:40,672 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:40,672 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 11:19:40,680 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:40,720 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:40,721 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:40,722 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 47 conjunts are in the unsatisfiable core [2019-05-23 11:19:40,725 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:41,252 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:41,253 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:19:41,254 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:41,260 INFO L146 ILogger]: treesize reduction 17, result has 15.0 percent of original size [2019-05-23 11:19:41,260 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:41,261 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:19:41,442 INFO L146 ILogger]: Checked inductivity of 890 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2019-05-23 11:19:41,460 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:41,461 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25] total 54 [2019-05-23 11:19:41,461 INFO L146 ILogger]: Interpolant automaton has 54 states [2019-05-23 11:19:41,461 INFO L146 ILogger]: Constructing interpolant automaton starting with 54 interpolants. [2019-05-23 11:19:41,462 INFO L146 ILogger]: CoverageRelationStatistics Valid=425, Invalid=2437, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:19:41,462 INFO L146 ILogger]: Start difference. First operand 184 states and 185 transitions. Second operand 54 states. [2019-05-23 11:19:45,394 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:45,394 INFO L146 ILogger]: Finished difference Result 270 states and 273 transitions. [2019-05-23 11:19:45,395 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2019-05-23 11:19:45,395 INFO L146 ILogger]: Start accepts. Automaton has 54 states. Word has length 183 [2019-05-23 11:19:45,396 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:45,396 INFO L146 ILogger]: With dead ends: 270 [2019-05-23 11:19:45,397 INFO L146 ILogger]: Without dead ends: 222 [2019-05-23 11:19:45,400 INFO L146 ILogger]: 0 DeclaredPredicates, 272 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3338 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1774, Invalid=10882, Unknown=0, NotChecked=0, Total=12656 [2019-05-23 11:19:45,401 INFO L146 ILogger]: Start minimizeSevpa. Operand 222 states. [2019-05-23 11:19:45,406 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 222 to 205. [2019-05-23 11:19:45,406 INFO L146 ILogger]: Start removeUnreachable. Operand 205 states. [2019-05-23 11:19:45,407 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2019-05-23 11:19:45,407 INFO L146 ILogger]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 183 [2019-05-23 11:19:45,407 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:45,407 INFO L146 ILogger]: Abstraction has 205 states and 206 transitions. [2019-05-23 11:19:45,407 INFO L146 ILogger]: Interpolant automaton has 54 states. [2019-05-23 11:19:45,407 INFO L146 ILogger]: Start isEmpty. Operand 205 states and 206 transitions. [2019-05-23 11:19:45,408 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 205 [2019-05-23 11:19:45,408 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:45,409 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:45,409 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:45,409 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:45,409 INFO L146 ILogger]: Analyzing trace with hash 884035440, now seen corresponding path program 11 times [2019-05-23 11:19:45,409 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:45,410 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:45,410 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:45,410 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:45,411 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:45,426 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:46,050 INFO L146 ILogger]: Checked inductivity of 1060 backedges. 0 proven. 960 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:19:46,051 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:46,051 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 11:19:46,059 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:46,126 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2019-05-23 11:19:46,126 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:46,128 INFO L146 ILogger]: Trace formula consists of 330 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:19:46,132 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:46,204 INFO L146 ILogger]: Checked inductivity of 1060 backedges. 0 proven. 960 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:19:46,223 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:46,223 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:19:46,223 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:19:46,224 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:19:46,224 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:19:46,224 INFO L146 ILogger]: Start difference. First operand 205 states and 206 transitions. Second operand 35 states. [2019-05-23 11:19:46,927 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:46,927 INFO L146 ILogger]: Finished difference Result 281 states and 283 transitions. [2019-05-23 11:19:46,934 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:19:46,934 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 204 [2019-05-23 11:19:46,934 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:46,935 INFO L146 ILogger]: With dead ends: 281 [2019-05-23 11:19:46,936 INFO L146 ILogger]: Without dead ends: 221 [2019-05-23 11:19:46,937 INFO L146 ILogger]: 0 DeclaredPredicates, 266 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:19:46,938 INFO L146 ILogger]: Start minimizeSevpa. Operand 221 states. [2019-05-23 11:19:46,942 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 221 to 214. [2019-05-23 11:19:46,943 INFO L146 ILogger]: Start removeUnreachable. Operand 214 states. [2019-05-23 11:19:46,943 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2019-05-23 11:19:46,944 INFO L146 ILogger]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 204 [2019-05-23 11:19:46,944 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:46,944 INFO L146 ILogger]: Abstraction has 214 states and 215 transitions. [2019-05-23 11:19:46,944 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:19:46,944 INFO L146 ILogger]: Start isEmpty. Operand 214 states and 215 transitions. [2019-05-23 11:19:46,945 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 214 [2019-05-23 11:19:46,945 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:46,946 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:46,946 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:46,946 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:46,946 INFO L146 ILogger]: Analyzing trace with hash -1139049438, now seen corresponding path program 12 times [2019-05-23 11:19:46,947 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:46,947 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:46,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:46,947 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:46,948 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:46,964 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:47,414 INFO L146 ILogger]: Checked inductivity of 1196 backedges. 0 proven. 1096 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:19:47,414 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:47,415 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 11:19:47,422 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:47,507 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2019-05-23 11:19:47,507 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:47,509 INFO L146 ILogger]: Trace formula consists of 344 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:19:47,512 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:47,583 INFO L146 ILogger]: Checked inductivity of 1196 backedges. 0 proven. 1096 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:19:47,603 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:47,603 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-05-23 11:19:47,603 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:19:47,604 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:19:47,604 INFO L146 ILogger]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:19:47,604 INFO L146 ILogger]: Start difference. First operand 214 states and 215 transitions. Second operand 37 states. [2019-05-23 11:19:48,417 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:48,417 INFO L146 ILogger]: Finished difference Result 290 states and 292 transitions. [2019-05-23 11:19:48,420 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:19:48,420 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 213 [2019-05-23 11:19:48,420 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:48,421 INFO L146 ILogger]: With dead ends: 290 [2019-05-23 11:19:48,421 INFO L146 ILogger]: Without dead ends: 230 [2019-05-23 11:19:48,423 INFO L146 ILogger]: 0 DeclaredPredicates, 279 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:19:48,424 INFO L146 ILogger]: Start minimizeSevpa. Operand 230 states. [2019-05-23 11:19:48,427 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 230 to 223. [2019-05-23 11:19:48,428 INFO L146 ILogger]: Start removeUnreachable. Operand 223 states. [2019-05-23 11:19:48,428 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2019-05-23 11:19:48,428 INFO L146 ILogger]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 213 [2019-05-23 11:19:48,429 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:48,429 INFO L146 ILogger]: Abstraction has 223 states and 224 transitions. [2019-05-23 11:19:48,429 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:19:48,429 INFO L146 ILogger]: Start isEmpty. Operand 223 states and 224 transitions. [2019-05-23 11:19:48,429 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 223 [2019-05-23 11:19:48,429 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:48,430 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:48,430 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:48,430 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:48,430 INFO L146 ILogger]: Analyzing trace with hash 1718843312, now seen corresponding path program 13 times [2019-05-23 11:19:48,430 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:48,430 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:48,431 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:48,431 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:48,431 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:48,446 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:49,050 INFO L146 ILogger]: Checked inductivity of 1341 backedges. 0 proven. 1241 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:19:49,051 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:49,051 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 11:19:49,059 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:49,109 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:49,110 INFO L146 ILogger]: Trace formula consists of 358 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:19:49,113 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:49,204 INFO L146 ILogger]: Checked inductivity of 1341 backedges. 0 proven. 1241 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:19:49,223 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:49,223 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:19:49,223 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:19:49,224 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:19:49,224 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:19:49,224 INFO L146 ILogger]: Start difference. First operand 223 states and 224 transitions. Second operand 39 states. [2019-05-23 11:19:50,651 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:50,651 INFO L146 ILogger]: Finished difference Result 299 states and 301 transitions. [2019-05-23 11:19:50,656 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:19:50,656 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 222 [2019-05-23 11:19:50,656 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:50,658 INFO L146 ILogger]: With dead ends: 299 [2019-05-23 11:19:50,658 INFO L146 ILogger]: Without dead ends: 239 [2019-05-23 11:19:50,659 INFO L146 ILogger]: 0 DeclaredPredicates, 292 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:19:50,659 INFO L146 ILogger]: Start minimizeSevpa. Operand 239 states. [2019-05-23 11:19:50,664 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 239 to 232. [2019-05-23 11:19:50,664 INFO L146 ILogger]: Start removeUnreachable. Operand 232 states. [2019-05-23 11:19:50,665 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2019-05-23 11:19:50,665 INFO L146 ILogger]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 222 [2019-05-23 11:19:50,665 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:50,666 INFO L146 ILogger]: Abstraction has 232 states and 233 transitions. [2019-05-23 11:19:50,666 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:19:50,666 INFO L146 ILogger]: Start isEmpty. Operand 232 states and 233 transitions. [2019-05-23 11:19:50,667 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 232 [2019-05-23 11:19:50,667 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:50,667 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:50,668 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:50,668 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:50,668 INFO L146 ILogger]: Analyzing trace with hash -257778718, now seen corresponding path program 14 times [2019-05-23 11:19:50,668 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:50,668 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:50,669 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:50,669 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:50,669 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:50,686 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:51,750 INFO L146 ILogger]: Checked inductivity of 1495 backedges. 0 proven. 1395 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:19:51,750 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:51,750 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 11:19:51,762 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:51,816 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:51,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:51,818 INFO L146 ILogger]: Trace formula consists of 372 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:19:51,821 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:51,913 INFO L146 ILogger]: Checked inductivity of 1495 backedges. 0 proven. 1395 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:19:51,931 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:51,931 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:19:51,931 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:19:51,932 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:19:51,932 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:19:51,932 INFO L146 ILogger]: Start difference. First operand 232 states and 233 transitions. Second operand 41 states. [2019-05-23 11:19:53,366 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:53,366 INFO L146 ILogger]: Finished difference Result 308 states and 310 transitions. [2019-05-23 11:19:53,374 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:19:53,374 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 231 [2019-05-23 11:19:53,375 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:53,376 INFO L146 ILogger]: With dead ends: 308 [2019-05-23 11:19:53,376 INFO L146 ILogger]: Without dead ends: 248 [2019-05-23 11:19:53,377 INFO L146 ILogger]: 0 DeclaredPredicates, 305 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:19:53,377 INFO L146 ILogger]: Start minimizeSevpa. Operand 248 states. [2019-05-23 11:19:53,382 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 248 to 241. [2019-05-23 11:19:53,382 INFO L146 ILogger]: Start removeUnreachable. Operand 241 states. [2019-05-23 11:19:53,383 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2019-05-23 11:19:53,383 INFO L146 ILogger]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 231 [2019-05-23 11:19:53,383 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:53,383 INFO L146 ILogger]: Abstraction has 241 states and 242 transitions. [2019-05-23 11:19:53,384 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:19:53,384 INFO L146 ILogger]: Start isEmpty. Operand 241 states and 242 transitions. [2019-05-23 11:19:53,385 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 241 [2019-05-23 11:19:53,385 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:53,385 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:53,385 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:53,386 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:53,386 INFO L146 ILogger]: Analyzing trace with hash 1972637680, now seen corresponding path program 15 times [2019-05-23 11:19:53,386 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:53,386 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:53,387 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:53,387 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:53,387 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:53,404 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:54,095 INFO L146 ILogger]: Checked inductivity of 1658 backedges. 0 proven. 1558 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:19:54,096 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:54,096 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 11:19:54,104 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:54,247 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2019-05-23 11:19:54,248 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:54,249 INFO L146 ILogger]: Trace formula consists of 386 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:19:54,252 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:54,940 INFO L146 ILogger]: Checked inductivity of 1658 backedges. 0 proven. 1558 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:19:54,992 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:54,992 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2019-05-23 11:19:54,993 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:19:54,994 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:19:54,994 INFO L146 ILogger]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:19:54,995 INFO L146 ILogger]: Start difference. First operand 241 states and 242 transitions. Second operand 43 states. [2019-05-23 11:19:56,276 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:56,276 INFO L146 ILogger]: Finished difference Result 317 states and 319 transitions. [2019-05-23 11:19:56,278 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:19:56,278 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 240 [2019-05-23 11:19:56,279 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:56,280 INFO L146 ILogger]: With dead ends: 317 [2019-05-23 11:19:56,280 INFO L146 ILogger]: Without dead ends: 257 [2019-05-23 11:19:56,281 INFO L146 ILogger]: 0 DeclaredPredicates, 318 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2019-05-23 11:19:56,281 INFO L146 ILogger]: Start minimizeSevpa. Operand 257 states. [2019-05-23 11:19:56,286 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 257 to 250. [2019-05-23 11:19:56,286 INFO L146 ILogger]: Start removeUnreachable. Operand 250 states. [2019-05-23 11:19:56,287 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 250 states to 250 states and 251 transitions. [2019-05-23 11:19:56,287 INFO L146 ILogger]: Start accepts. Automaton has 250 states and 251 transitions. Word has length 240 [2019-05-23 11:19:56,288 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:56,288 INFO L146 ILogger]: Abstraction has 250 states and 251 transitions. [2019-05-23 11:19:56,288 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:19:56,288 INFO L146 ILogger]: Start isEmpty. Operand 250 states and 251 transitions. [2019-05-23 11:19:56,289 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 250 [2019-05-23 11:19:56,289 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:56,289 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:56,290 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:56,290 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:56,290 INFO L146 ILogger]: Analyzing trace with hash -1828107358, now seen corresponding path program 16 times [2019-05-23 11:19:56,290 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:56,290 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:56,291 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:56,291 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:56,291 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:56,309 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:57,667 INFO L146 ILogger]: Checked inductivity of 1830 backedges. 0 proven. 1730 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:19:57,668 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:57,668 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 11:19:57,677 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:57,730 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:57,730 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:57,732 INFO L146 ILogger]: Trace formula consists of 358 conjuncts, 55 conjunts are in the unsatisfiable core [2019-05-23 11:19:57,736 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:58,651 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:58,651 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:19:58,652 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:58,656 INFO L146 ILogger]: treesize reduction 17, result has 15.0 percent of original size [2019-05-23 11:19:58,656 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:58,657 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:19:58,938 INFO L146 ILogger]: Checked inductivity of 1830 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2019-05-23 11:19:58,956 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:58,956 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 29] total 70 [2019-05-23 11:19:58,957 INFO L146 ILogger]: Interpolant automaton has 70 states [2019-05-23 11:19:58,957 INFO L146 ILogger]: Constructing interpolant automaton starting with 70 interpolants. [2019-05-23 11:19:58,958 INFO L146 ILogger]: CoverageRelationStatistics Valid=746, Invalid=4084, Unknown=0, NotChecked=0, Total=4830 [2019-05-23 11:19:58,958 INFO L146 ILogger]: Start difference. First operand 250 states and 251 transitions. Second operand 70 states. [2019-05-23 11:20:04,609 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:04,610 INFO L146 ILogger]: Finished difference Result 348 states and 351 transitions. [2019-05-23 11:20:04,610 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2019-05-23 11:20:04,610 INFO L146 ILogger]: Start accepts. Automaton has 70 states. Word has length 249 [2019-05-23 11:20:04,611 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:04,612 INFO L146 ILogger]: With dead ends: 348 [2019-05-23 11:20:04,612 INFO L146 ILogger]: Without dead ends: 288 [2019-05-23 11:20:04,615 INFO L146 ILogger]: 0 DeclaredPredicates, 370 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5893 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=3198, Invalid=18854, Unknown=0, NotChecked=0, Total=22052 [2019-05-23 11:20:04,615 INFO L146 ILogger]: Start minimizeSevpa. Operand 288 states. [2019-05-23 11:20:04,621 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 288 to 271. [2019-05-23 11:20:04,622 INFO L146 ILogger]: Start removeUnreachable. Operand 271 states. [2019-05-23 11:20:04,622 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2019-05-23 11:20:04,622 INFO L146 ILogger]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 249 [2019-05-23 11:20:04,623 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:04,623 INFO L146 ILogger]: Abstraction has 271 states and 272 transitions. [2019-05-23 11:20:04,623 INFO L146 ILogger]: Interpolant automaton has 70 states. [2019-05-23 11:20:04,623 INFO L146 ILogger]: Start isEmpty. Operand 271 states and 272 transitions. [2019-05-23 11:20:04,624 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 271 [2019-05-23 11:20:04,624 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:04,625 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:04,625 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:04,625 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:04,625 INFO L146 ILogger]: Analyzing trace with hash -1327489352, now seen corresponding path program 17 times [2019-05-23 11:20:04,626 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:04,626 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:04,626 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:04,626 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:04,626 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:04,645 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:05,746 INFO L146 ILogger]: Checked inductivity of 2066 backedges. 0 proven. 1911 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:05,746 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:05,746 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 11:20:05,754 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:05,848 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2019-05-23 11:20:05,848 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:05,850 INFO L146 ILogger]: Trace formula consists of 432 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:20:05,854 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:05,964 INFO L146 ILogger]: Checked inductivity of 2066 backedges. 0 proven. 1911 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:05,983 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:05,984 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-05-23 11:20:05,984 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:20:05,984 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:20:05,985 INFO L146 ILogger]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:20:05,985 INFO L146 ILogger]: Start difference. First operand 271 states and 272 transitions. Second operand 47 states. [2019-05-23 11:20:07,309 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:07,310 INFO L146 ILogger]: Finished difference Result 359 states and 361 transitions. [2019-05-23 11:20:07,312 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:20:07,312 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 270 [2019-05-23 11:20:07,312 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:07,313 INFO L146 ILogger]: With dead ends: 359 [2019-05-23 11:20:07,314 INFO L146 ILogger]: Without dead ends: 287 [2019-05-23 11:20:07,315 INFO L146 ILogger]: 0 DeclaredPredicates, 356 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:20:07,315 INFO L146 ILogger]: Start minimizeSevpa. Operand 287 states. [2019-05-23 11:20:07,321 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 287 to 280. [2019-05-23 11:20:07,321 INFO L146 ILogger]: Start removeUnreachable. Operand 280 states. [2019-05-23 11:20:07,322 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2019-05-23 11:20:07,322 INFO L146 ILogger]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 270 [2019-05-23 11:20:07,322 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:07,323 INFO L146 ILogger]: Abstraction has 280 states and 281 transitions. [2019-05-23 11:20:07,323 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:20:07,323 INFO L146 ILogger]: Start isEmpty. Operand 280 states and 281 transitions. [2019-05-23 11:20:07,324 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 280 [2019-05-23 11:20:07,324 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:07,325 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:07,325 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:07,325 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:07,325 INFO L146 ILogger]: Analyzing trace with hash -1013491990, now seen corresponding path program 18 times [2019-05-23 11:20:07,325 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:07,325 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:07,326 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:07,326 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:07,326 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:07,345 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:08,167 INFO L146 ILogger]: Checked inductivity of 2256 backedges. 0 proven. 2101 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:08,167 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:08,167 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 11:20:08,176 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:08,250 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2019-05-23 11:20:08,250 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:08,252 INFO L146 ILogger]: Trace formula consists of 362 conjuncts, 67 conjunts are in the unsatisfiable core [2019-05-23 11:20:08,256 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:09,500 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:09,501 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2019-05-23 11:20:09,501 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:09,503 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:09,503 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:09,503 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2019-05-23 11:20:09,902 INFO L146 ILogger]: Checked inductivity of 2256 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1176 trivial. 0 not checked. [2019-05-23 11:20:09,921 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:09,921 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 35] total 80 [2019-05-23 11:20:09,922 INFO L146 ILogger]: Interpolant automaton has 80 states [2019-05-23 11:20:09,922 INFO L146 ILogger]: Constructing interpolant automaton starting with 80 interpolants. [2019-05-23 11:20:09,922 INFO L146 ILogger]: CoverageRelationStatistics Valid=964, Invalid=5356, Unknown=0, NotChecked=0, Total=6320 [2019-05-23 11:20:09,922 INFO L146 ILogger]: Start difference. First operand 280 states and 281 transitions. Second operand 80 states. [2019-05-23 11:20:16,291 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:16,291 INFO L146 ILogger]: Finished difference Result 390 states and 393 transitions. [2019-05-23 11:20:16,292 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2019-05-23 11:20:16,292 INFO L146 ILogger]: Start accepts. Automaton has 80 states. Word has length 279 [2019-05-23 11:20:16,292 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:16,294 INFO L146 ILogger]: With dead ends: 390 [2019-05-23 11:20:16,294 INFO L146 ILogger]: Without dead ends: 318 [2019-05-23 11:20:16,295 INFO L146 ILogger]: 0 DeclaredPredicates, 412 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7445 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=3949, Invalid=23773, Unknown=0, NotChecked=0, Total=27722 [2019-05-23 11:20:16,296 INFO L146 ILogger]: Start minimizeSevpa. Operand 318 states. [2019-05-23 11:20:16,303 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 318 to 301. [2019-05-23 11:20:16,303 INFO L146 ILogger]: Start removeUnreachable. Operand 301 states. [2019-05-23 11:20:16,303 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2019-05-23 11:20:16,304 INFO L146 ILogger]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 279 [2019-05-23 11:20:16,304 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:16,304 INFO L146 ILogger]: Abstraction has 301 states and 302 transitions. [2019-05-23 11:20:16,304 INFO L146 ILogger]: Interpolant automaton has 80 states. [2019-05-23 11:20:16,304 INFO L146 ILogger]: Start isEmpty. Operand 301 states and 302 transitions. [2019-05-23 11:20:16,306 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 301 [2019-05-23 11:20:16,306 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:16,306 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:16,306 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:16,307 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:16,307 INFO L146 ILogger]: Analyzing trace with hash -1501539968, now seen corresponding path program 19 times [2019-05-23 11:20:16,307 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:16,307 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:16,308 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,308 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:16,308 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,327 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,773 INFO L146 ILogger]: Checked inductivity of 2522 backedges. 0 proven. 2300 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:17,774 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:17,774 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 11:20:17,789 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:17,864 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,866 INFO L146 ILogger]: Trace formula consists of 478 conjuncts, 48 conjunts are in the unsatisfiable core [2019-05-23 11:20:17,870 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:17,984 INFO L146 ILogger]: Checked inductivity of 2522 backedges. 0 proven. 2300 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:18,003 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:18,003 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2019-05-23 11:20:18,003 INFO L146 ILogger]: Interpolant automaton has 51 states [2019-05-23 11:20:18,004 INFO L146 ILogger]: Constructing interpolant automaton starting with 51 interpolants. [2019-05-23 11:20:18,004 INFO L146 ILogger]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:20:18,004 INFO L146 ILogger]: Start difference. First operand 301 states and 302 transitions. Second operand 51 states. [2019-05-23 11:20:19,338 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:19,339 INFO L146 ILogger]: Finished difference Result 401 states and 403 transitions. [2019-05-23 11:20:19,340 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-05-23 11:20:19,340 INFO L146 ILogger]: Start accepts. Automaton has 51 states. Word has length 300 [2019-05-23 11:20:19,341 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:19,342 INFO L146 ILogger]: With dead ends: 401 [2019-05-23 11:20:19,342 INFO L146 ILogger]: Without dead ends: 317 [2019-05-23 11:20:19,343 INFO L146 ILogger]: 0 DeclaredPredicates, 394 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:20:19,344 INFO L146 ILogger]: Start minimizeSevpa. Operand 317 states. [2019-05-23 11:20:19,350 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 317 to 310. [2019-05-23 11:20:19,350 INFO L146 ILogger]: Start removeUnreachable. Operand 310 states. [2019-05-23 11:20:19,351 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 310 states to 310 states and 311 transitions. [2019-05-23 11:20:19,351 INFO L146 ILogger]: Start accepts. Automaton has 310 states and 311 transitions. Word has length 300 [2019-05-23 11:20:19,351 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:19,352 INFO L146 ILogger]: Abstraction has 310 states and 311 transitions. [2019-05-23 11:20:19,352 INFO L146 ILogger]: Interpolant automaton has 51 states. [2019-05-23 11:20:19,352 INFO L146 ILogger]: Start isEmpty. Operand 310 states and 311 transitions. [2019-05-23 11:20:19,353 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 310 [2019-05-23 11:20:19,353 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,354 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:19,354 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,354 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,354 INFO L146 ILogger]: Analyzing trace with hash 1614587442, now seen corresponding path program 20 times [2019-05-23 11:20:19,354 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,354 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,355 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,355 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:19,355 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,376 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,254 INFO L146 ILogger]: Checked inductivity of 2730 backedges. 0 proven. 2508 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:20,255 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:20,255 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:20,269 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:20,341 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:20,342 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,343 INFO L146 ILogger]: Trace formula consists of 492 conjuncts, 50 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,346 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,440 INFO L146 ILogger]: Checked inductivity of 2730 backedges. 0 proven. 2508 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:20,459 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,459 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2019-05-23 11:20:20,460 INFO L146 ILogger]: Interpolant automaton has 53 states [2019-05-23 11:20:20,460 INFO L146 ILogger]: Constructing interpolant automaton starting with 53 interpolants. [2019-05-23 11:20:20,461 INFO L146 ILogger]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:20:20,461 INFO L146 ILogger]: Start difference. First operand 310 states and 311 transitions. Second operand 53 states.