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_vararg_true-unreach-call_ground_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:42,449 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:42,451 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:42,465 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:42,466 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:42,468 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:42,471 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:42,473 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:42,477 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:42,478 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:42,480 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:42,480 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:42,481 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:42,482 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:42,484 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:42,485 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:42,487 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:42,489 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:42,499 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:42,505 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:42,506 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:42,507 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:42,511 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:42,511 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:42,512 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:42,513 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:42,513 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:42,514 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:42,514 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:42,515 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:42,515 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:42,516 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:42,517 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:42,517 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:42,518 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:42,518 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:42,518 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:42,519 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:42,520 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:42,520 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:42,538 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:42,539 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:42,540 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:42,540 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:42,540 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:42,541 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:42,541 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:42,541 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:42,541 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:42,541 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:42,542 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:42,542 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:42,542 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:42,542 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:42,542 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:42,543 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:42,543 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:42,543 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:42,543 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:42,543 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:42,544 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:42,544 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:42,544 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:42,544 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:42,544 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:42,545 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:42,545 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:42,545 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:42,545 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:20:42,576 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:42,590 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:42,593 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:42,595 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:42,595 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:42,596 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_vararg_true-unreach-call_ground_true-termination.i [2019-05-23 11:20:42,653 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bbdbcc7a/70936e3272e741138096f0ef028c2366/FLAG38f59c764 [2019-05-23 11:20:43,110 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:43,111 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_vararg_true-unreach-call_ground_true-termination.i [2019-05-23 11:20:43,119 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bbdbcc7a/70936e3272e741138096f0ef028c2366/FLAG38f59c764 [2019-05-23 11:20:43,467 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bbdbcc7a/70936e3272e741138096f0ef028c2366 [2019-05-23 11:20:43,478 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:43,480 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:43,481 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:43,481 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:43,485 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:43,486 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:43" (1/1) ... [2019-05-23 11:20:43,489 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@429af808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43, skipping insertion in model container [2019-05-23 11:20:43,489 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:43" (1/1) ... [2019-05-23 11:20:43,496 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:43,514 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:43,753 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:43,761 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:43,786 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:43,815 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:43,815 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43 WrapperNode [2019-05-23 11:20:43,816 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:43,817 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:43,818 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:43,818 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:43,827 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43" (1/1) ... [2019-05-23 11:20:43,841 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43" (1/1) ... [2019-05-23 11:20:43,867 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:43,867 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:43,867 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:43,868 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:43,960 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43" (1/1) ... [2019-05-23 11:20:43,960 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43" (1/1) ... [2019-05-23 11:20:43,962 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43" (1/1) ... [2019-05-23 11:20:43,963 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43" (1/1) ... [2019-05-23 11:20:43,969 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43" (1/1) ... [2019-05-23 11:20:43,974 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43" (1/1) ... [2019-05-23 11:20:43,976 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43" (1/1) ... [2019-05-23 11:20:43,977 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:43,978 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:43,978 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:43,982 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:43,985 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:20:44,043 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:44,044 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:44,044 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:44,044 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:44,044 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:44,449 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:44,450 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:20:44,451 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:44 BoogieIcfgContainer [2019-05-23 11:20:44,451 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:44,452 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:44,452 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:44,455 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:44,456 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:43" (1/3) ... [2019-05-23 11:20:44,457 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d96f046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:44, skipping insertion in model container [2019-05-23 11:20:44,457 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:43" (2/3) ... [2019-05-23 11:20:44,457 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d96f046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:44, skipping insertion in model container [2019-05-23 11:20:44,458 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:44" (3/3) ... [2019-05-23 11:20:44,459 INFO L146 ILogger]: Analyzing ICFG standard_vararg_true-unreach-call_ground_true-termination.i [2019-05-23 11:20:44,469 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:44,477 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:44,494 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:44,531 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:44,532 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:44,532 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:44,532 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:44,532 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:44,533 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:44,533 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:44,533 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:44,533 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:44,551 INFO L146 ILogger]: Start isEmpty. Operand 33 states. [2019-05-23 11:20:44,558 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 17 [2019-05-23 11:20:44,559 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:44,559 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:44,561 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:44,567 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:44,567 INFO L146 ILogger]: Analyzing trace with hash -327161326, now seen corresponding path program 1 times [2019-05-23 11:20:44,569 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:44,570 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:44,611 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:44,612 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:44,612 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:44,645 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:44,676 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:44,679 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:44,679 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:44,683 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:44,697 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:44,698 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:44,700 INFO L146 ILogger]: Start difference. First operand 33 states. Second operand 2 states. [2019-05-23 11:20:44,718 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:44,719 INFO L146 ILogger]: Finished difference Result 53 states and 59 transitions. [2019-05-23 11:20:44,719 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:44,721 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 16 [2019-05-23 11:20:44,721 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:44,731 INFO L146 ILogger]: With dead ends: 53 [2019-05-23 11:20:44,732 INFO L146 ILogger]: Without dead ends: 27 [2019-05-23 11:20:44,735 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:44,754 INFO L146 ILogger]: Start minimizeSevpa. Operand 27 states. [2019-05-23 11:20:44,768 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-05-23 11:20:44,770 INFO L146 ILogger]: Start removeUnreachable. Operand 27 states. [2019-05-23 11:20:44,771 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-05-23 11:20:44,772 INFO L146 ILogger]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2019-05-23 11:20:44,773 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:44,773 INFO L146 ILogger]: Abstraction has 27 states and 28 transitions. [2019-05-23 11:20:44,773 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:44,773 INFO L146 ILogger]: Start isEmpty. Operand 27 states and 28 transitions. [2019-05-23 11:20:44,774 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 19 [2019-05-23 11:20:44,774 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:44,774 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:44,775 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:44,775 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:44,775 INFO L146 ILogger]: Analyzing trace with hash 1077391805, now seen corresponding path program 1 times [2019-05-23 11:20:44,775 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:44,775 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:44,778 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:44,778 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:44,779 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:44,810 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:44,904 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:44,905 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:44,905 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:20:44,906 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:20:44,907 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:20:44,907 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:20:44,908 INFO L146 ILogger]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2019-05-23 11:20:45,002 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:45,002 INFO L146 ILogger]: Finished difference Result 48 states and 50 transitions. [2019-05-23 11:20:45,002 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:45,003 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 18 [2019-05-23 11:20:45,003 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:45,004 INFO L146 ILogger]: With dead ends: 48 [2019-05-23 11:20:45,004 INFO L146 ILogger]: Without dead ends: 32 [2019-05-23 11:20:45,005 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:20:45,005 INFO L146 ILogger]: Start minimizeSevpa. Operand 32 states. [2019-05-23 11:20:45,013 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 32 to 29. [2019-05-23 11:20:45,013 INFO L146 ILogger]: Start removeUnreachable. Operand 29 states. [2019-05-23 11:20:45,015 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-05-23 11:20:45,015 INFO L146 ILogger]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 18 [2019-05-23 11:20:45,015 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:45,016 INFO L146 ILogger]: Abstraction has 29 states and 30 transitions. [2019-05-23 11:20:45,016 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:20:45,016 INFO L146 ILogger]: Start isEmpty. Operand 29 states and 30 transitions. [2019-05-23 11:20:45,016 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:20:45,016 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:45,017 INFO L146 ILogger]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:45,017 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:45,018 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:45,018 INFO L146 ILogger]: Analyzing trace with hash -1929266779, now seen corresponding path program 1 times [2019-05-23 11:20:45,018 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:45,018 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:45,019 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,019 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:45,019 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,051 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:45,458 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2019-05-23 11:20:45,712 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:45,713 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:45,713 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:45,725 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:45,753 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:45,756 INFO L146 ILogger]: Trace formula consists of 46 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:20:45,762 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:46,009 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:20:46,010 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:46,015 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:46,016 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:46,017 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:20:46,084 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:46,113 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:46,114 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 14 [2019-05-23 11:20:46,114 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:20:46,115 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:20:46,115 INFO L146 ILogger]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:46,116 INFO L146 ILogger]: Start difference. First operand 29 states and 30 transitions. Second operand 14 states. [2019-05-23 11:20:46,695 WARN L146 ILogger]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2019-05-23 11:20:46,932 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:46,932 INFO L146 ILogger]: Finished difference Result 48 states and 49 transitions. [2019-05-23 11:20:46,932 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:20:46,932 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 24 [2019-05-23 11:20:46,933 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:46,934 INFO L146 ILogger]: With dead ends: 48 [2019-05-23 11:20:46,934 INFO L146 ILogger]: Without dead ends: 46 [2019-05-23 11:20:46,936 INFO L146 ILogger]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:46,936 INFO L146 ILogger]: Start minimizeSevpa. Operand 46 states. [2019-05-23 11:20:46,941 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 46 to 35. [2019-05-23 11:20:46,941 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:20:46,942 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2019-05-23 11:20:46,942 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2019-05-23 11:20:46,942 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:46,942 INFO L146 ILogger]: Abstraction has 35 states and 36 transitions. [2019-05-23 11:20:46,943 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:20:46,943 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 36 transitions. [2019-05-23 11:20:46,944 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:20:46,944 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:46,944 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:46,944 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:46,945 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:46,945 INFO L146 ILogger]: Analyzing trace with hash -380179816, now seen corresponding path program 1 times [2019-05-23 11:20:46,945 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:46,945 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:46,946 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:46,946 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:46,946 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:46,957 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,065 INFO L146 ILogger]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:47,065 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:47,066 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:47,080 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:47,112 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,113 INFO L146 ILogger]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:47,115 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:47,244 INFO L146 ILogger]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:47,267 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:47,267 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2019-05-23 11:20:47,268 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:20:47,268 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:20:47,268 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:47,268 INFO L146 ILogger]: Start difference. First operand 35 states and 36 transitions. Second operand 13 states. [2019-05-23 11:20:47,486 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:47,486 INFO L146 ILogger]: Finished difference Result 70 states and 72 transitions. [2019-05-23 11:20:47,490 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:20:47,490 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 34 [2019-05-23 11:20:47,491 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:47,491 INFO L146 ILogger]: With dead ends: 70 [2019-05-23 11:20:47,491 INFO L146 ILogger]: Without dead ends: 44 [2019-05-23 11:20:47,492 INFO L146 ILogger]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:47,492 INFO L146 ILogger]: Start minimizeSevpa. Operand 44 states. [2019-05-23 11:20:47,497 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 44 to 41. [2019-05-23 11:20:47,497 INFO L146 ILogger]: Start removeUnreachable. Operand 41 states. [2019-05-23 11:20:47,498 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2019-05-23 11:20:47,498 INFO L146 ILogger]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 34 [2019-05-23 11:20:47,498 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:47,498 INFO L146 ILogger]: Abstraction has 41 states and 42 transitions. [2019-05-23 11:20:47,499 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:20:47,499 INFO L146 ILogger]: Start isEmpty. Operand 41 states and 42 transitions. [2019-05-23 11:20:47,500 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:20:47,500 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:47,500 INFO L146 ILogger]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:47,501 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:47,501 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:47,501 INFO L146 ILogger]: Analyzing trace with hash 556016256, now seen corresponding path program 2 times [2019-05-23 11:20:47,501 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:47,501 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:47,502 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:47,502 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:47,502 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:47,537 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,908 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:47,908 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:47,908 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:47,918 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:47,953 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:47,953 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,954 INFO L146 ILogger]: Trace formula consists of 70 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:20:47,956 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:48,546 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:20:48,547 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:48,548 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:48,548 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:48,548 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:20:48,617 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:48,645 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:48,645 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2019-05-23 11:20:48,646 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:20:48,646 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:20:48,647 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:20:48,648 INFO L146 ILogger]: Start difference. First operand 41 states and 42 transitions. Second operand 29 states. [2019-05-23 11:20:50,864 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:50,864 INFO L146 ILogger]: Finished difference Result 109 states and 112 transitions. [2019-05-23 11:20:50,866 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-05-23 11:20:50,867 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 40 [2019-05-23 11:20:50,867 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:50,869 INFO L146 ILogger]: With dead ends: 109 [2019-05-23 11:20:50,869 INFO L146 ILogger]: Without dead ends: 107 [2019-05-23 11:20:50,872 INFO L146 ILogger]: 0 DeclaredPredicates, 94 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=577, Invalid=3979, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:20:50,872 INFO L146 ILogger]: Start minimizeSevpa. Operand 107 states. [2019-05-23 11:20:50,878 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 107 to 51. [2019-05-23 11:20:50,879 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:20:50,880 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2019-05-23 11:20:50,880 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 40 [2019-05-23 11:20:50,880 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:50,881 INFO L146 ILogger]: Abstraction has 51 states and 52 transitions. [2019-05-23 11:20:50,881 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:20:50,881 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 52 transitions. [2019-05-23 11:20:50,882 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 51 [2019-05-23 11:20:50,882 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:50,882 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:50,883 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:50,883 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:50,883 INFO L146 ILogger]: Analyzing trace with hash -2093204045, now seen corresponding path program 3 times [2019-05-23 11:20:50,883 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:50,884 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:50,885 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,885 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:50,885 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,897 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:51,077 INFO L146 ILogger]: Checked inductivity of 32 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:51,077 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:51,078 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:51,087 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:51,129 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:20:51,129 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:51,130 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:20:51,132 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:51,347 INFO L146 ILogger]: Checked inductivity of 32 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:51,368 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:51,368 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2019-05-23 11:20:51,368 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:20:51,369 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:20:51,369 INFO L146 ILogger]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:51,369 INFO L146 ILogger]: Start difference. First operand 51 states and 52 transitions. Second operand 19 states. [2019-05-23 11:20:51,767 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:51,768 INFO L146 ILogger]: Finished difference Result 96 states and 98 transitions. [2019-05-23 11:20:51,768 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:20:51,768 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 50 [2019-05-23 11:20:51,769 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:51,770 INFO L146 ILogger]: With dead ends: 96 [2019-05-23 11:20:51,770 INFO L146 ILogger]: Without dead ends: 60 [2019-05-23 11:20:51,771 INFO L146 ILogger]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:20:51,772 INFO L146 ILogger]: Start minimizeSevpa. Operand 60 states. [2019-05-23 11:20:51,776 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 60 to 57. [2019-05-23 11:20:51,777 INFO L146 ILogger]: Start removeUnreachable. Operand 57 states. [2019-05-23 11:20:51,778 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2019-05-23 11:20:51,778 INFO L146 ILogger]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2019-05-23 11:20:51,778 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:51,778 INFO L146 ILogger]: Abstraction has 57 states and 58 transitions. [2019-05-23 11:20:51,778 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:20:51,778 INFO L146 ILogger]: Start isEmpty. Operand 57 states and 58 transitions. [2019-05-23 11:20:51,780 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 57 [2019-05-23 11:20:51,780 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:51,780 INFO L146 ILogger]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:51,780 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:51,781 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:51,782 INFO L146 ILogger]: Analyzing trace with hash 430744987, now seen corresponding path program 4 times [2019-05-23 11:20:51,782 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:51,782 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:51,783 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:51,783 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:51,783 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:51,812 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:52,233 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:52,233 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:52,233 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:52,243 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:52,263 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:52,263 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:52,264 INFO L146 ILogger]: Trace formula consists of 86 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:20:52,267 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:52,634 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-05-23 11:20:52,634 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:52,635 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:52,636 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 11:20:52,636 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2019-05-23 11:20:52,675 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:52,695 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:52,695 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 26 [2019-05-23 11:20:52,696 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:20:52,696 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:20:52,696 INFO L146 ILogger]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:52,697 INFO L146 ILogger]: Start difference. First operand 57 states and 58 transitions. Second operand 26 states. [2019-05-23 11:20:53,875 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:53,875 INFO L146 ILogger]: Finished difference Result 80 states and 81 transitions. [2019-05-23 11:20:53,875 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:20:53,875 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 56 [2019-05-23 11:20:53,876 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:53,877 INFO L146 ILogger]: With dead ends: 80 [2019-05-23 11:20:53,877 INFO L146 ILogger]: Without dead ends: 78 [2019-05-23 11:20:53,878 INFO L146 ILogger]: 0 DeclaredPredicates, 96 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=261, Invalid=2091, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:20:53,878 INFO L146 ILogger]: Start minimizeSevpa. Operand 78 states. [2019-05-23 11:20:53,884 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-05-23 11:20:53,884 INFO L146 ILogger]: Start removeUnreachable. Operand 67 states. [2019-05-23 11:20:53,885 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2019-05-23 11:20:53,885 INFO L146 ILogger]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 56 [2019-05-23 11:20:53,885 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:53,885 INFO L146 ILogger]: Abstraction has 67 states and 68 transitions. [2019-05-23 11:20:53,886 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:20:53,886 INFO L146 ILogger]: Start isEmpty. Operand 67 states and 68 transitions. [2019-05-23 11:20:53,887 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:20:53,887 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:53,887 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:53,887 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:53,888 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:53,888 INFO L146 ILogger]: Analyzing trace with hash 760994574, now seen corresponding path program 5 times [2019-05-23 11:20:53,888 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:53,888 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:53,889 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:53,889 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:53,889 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:53,901 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:54,094 INFO L146 ILogger]: Checked inductivity of 72 backedges. 29 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:54,095 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:54,095 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:54,103 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:54,128 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:20:54,128 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:54,129 INFO L146 ILogger]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:20:54,132 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:54,521 INFO L146 ILogger]: Checked inductivity of 72 backedges. 48 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:54,540 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:54,540 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2019-05-23 11:20:54,541 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:20:54,541 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:20:54,541 INFO L146 ILogger]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:20:54,542 INFO L146 ILogger]: Start difference. First operand 67 states and 68 transitions. Second operand 25 states. [2019-05-23 11:20:55,039 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:55,039 INFO L146 ILogger]: Finished difference Result 122 states and 124 transitions. [2019-05-23 11:20:55,040 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:20:55,040 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 66 [2019-05-23 11:20:55,040 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:55,041 INFO L146 ILogger]: With dead ends: 122 [2019-05-23 11:20:55,041 INFO L146 ILogger]: Without dead ends: 76 [2019-05-23 11:20:55,042 INFO L146 ILogger]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=222, Invalid=1110, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:20:55,046 INFO L146 ILogger]: Start minimizeSevpa. Operand 76 states. [2019-05-23 11:20:55,051 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 76 to 73. [2019-05-23 11:20:55,052 INFO L146 ILogger]: Start removeUnreachable. Operand 73 states. [2019-05-23 11:20:55,052 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2019-05-23 11:20:55,053 INFO L146 ILogger]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 66 [2019-05-23 11:20:55,053 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:55,053 INFO L146 ILogger]: Abstraction has 73 states and 74 transitions. [2019-05-23 11:20:55,053 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:20:55,053 INFO L146 ILogger]: Start isEmpty. Operand 73 states and 74 transitions. [2019-05-23 11:20:55,054 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 73 [2019-05-23 11:20:55,054 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:55,055 INFO L146 ILogger]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:55,055 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:55,055 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:55,055 INFO L146 ILogger]: Analyzing trace with hash 1443853046, now seen corresponding path program 6 times [2019-05-23 11:20:55,056 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:55,056 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:55,056 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:55,057 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:55,057 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:55,081 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:55,676 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:55,677 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:55,677 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:55,687 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:55,720 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:20:55,720 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:55,723 INFO L146 ILogger]: Trace formula consists of 118 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:20:55,726 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:56,119 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-05-23 11:20:56,120 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:56,125 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:56,126 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 11:20:56,126 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2019-05-23 11:20:56,260 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:56,279 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:56,280 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 32 [2019-05-23 11:20:56,280 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:20:56,280 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:20:56,281 INFO L146 ILogger]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:20:56,281 INFO L146 ILogger]: Start difference. First operand 73 states and 74 transitions. Second operand 32 states. [2019-05-23 11:20:57,753 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:57,753 INFO L146 ILogger]: Finished difference Result 96 states and 97 transitions. [2019-05-23 11:20:57,753 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:20:57,754 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 72 [2019-05-23 11:20:57,754 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:57,755 INFO L146 ILogger]: With dead ends: 96 [2019-05-23 11:20:57,755 INFO L146 ILogger]: Without dead ends: 94 [2019-05-23 11:20:57,757 INFO L146 ILogger]: 0 DeclaredPredicates, 121 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=314, Invalid=3226, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:20:57,757 INFO L146 ILogger]: Start minimizeSevpa. Operand 94 states. [2019-05-23 11:20:57,763 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 94 to 83. [2019-05-23 11:20:57,763 INFO L146 ILogger]: Start removeUnreachable. Operand 83 states. [2019-05-23 11:20:57,764 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2019-05-23 11:20:57,764 INFO L146 ILogger]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 72 [2019-05-23 11:20:57,765 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:57,765 INFO L146 ILogger]: Abstraction has 83 states and 84 transitions. [2019-05-23 11:20:57,765 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:20:57,765 INFO L146 ILogger]: Start isEmpty. Operand 83 states and 84 transitions. [2019-05-23 11:20:57,766 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 83 [2019-05-23 11:20:57,766 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:57,766 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:57,767 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:57,767 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:57,767 INFO L146 ILogger]: Analyzing trace with hash -408030551, now seen corresponding path program 7 times [2019-05-23 11:20:57,767 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:57,767 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:57,768 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:57,768 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:57,768 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:57,781 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:58,013 INFO L146 ILogger]: Checked inductivity of 128 backedges. 56 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:58,014 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:58,014 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:58,026 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:58,047 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:58,048 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:20:58,052 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:58,444 INFO L146 ILogger]: Checked inductivity of 128 backedges. 84 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:58,463 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:58,463 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 31 [2019-05-23 11:20:58,464 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:20:58,464 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:20:58,465 INFO L146 ILogger]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:58,465 INFO L146 ILogger]: Start difference. First operand 83 states and 84 transitions. Second operand 31 states. [2019-05-23 11:20:59,010 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:59,010 INFO L146 ILogger]: Finished difference Result 148 states and 150 transitions. [2019-05-23 11:20:59,011 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:20:59,011 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 82 [2019-05-23 11:20:59,011 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:59,012 INFO L146 ILogger]: With dead ends: 148 [2019-05-23 11:20:59,013 INFO L146 ILogger]: Without dead ends: 92 [2019-05-23 11:20:59,014 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=343, Invalid=1819, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:20:59,015 INFO L146 ILogger]: Start minimizeSevpa. Operand 92 states. [2019-05-23 11:20:59,020 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 92 to 89. [2019-05-23 11:20:59,020 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:20:59,021 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2019-05-23 11:20:59,021 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 82 [2019-05-23 11:20:59,022 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:59,022 INFO L146 ILogger]: Abstraction has 89 states and 90 transitions. [2019-05-23 11:20:59,022 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:20:59,022 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 90 transitions. [2019-05-23 11:20:59,024 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:20:59,025 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:59,025 INFO L146 ILogger]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:59,025 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:59,025 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:59,025 INFO L146 ILogger]: Analyzing trace with hash -1773880687, now seen corresponding path program 8 times [2019-05-23 11:20:59,025 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:59,026 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:59,026 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:59,026 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:59,026 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:59,041 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:00,122 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:00,123 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:00,123 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 11:21:00,133 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:00,157 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:00,158 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:00,159 INFO L146 ILogger]: Trace formula consists of 142 conjuncts, 52 conjunts are in the unsatisfiable core [2019-05-23 11:21:00,161 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:00,983 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:21:00,984 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:00,987 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:00,987 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:00,987 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:21:01,065 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:01,085 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:01,085 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 51 [2019-05-23 11:21:01,086 INFO L146 ILogger]: Interpolant automaton has 51 states [2019-05-23 11:21:01,086 INFO L146 ILogger]: Constructing interpolant automaton starting with 51 interpolants. [2019-05-23 11:21:01,089 INFO L146 ILogger]: CoverageRelationStatistics Valid=173, Invalid=2377, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:21:01,089 INFO L146 ILogger]: Start difference. First operand 89 states and 90 transitions. Second operand 51 states. [2019-05-23 11:21:03,149 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:03,150 INFO L146 ILogger]: Finished difference Result 112 states and 113 transitions. [2019-05-23 11:21:03,150 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:21:03,150 INFO L146 ILogger]: Start accepts. Automaton has 51 states. Word has length 88 [2019-05-23 11:21:03,151 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:03,151 INFO L146 ILogger]: With dead ends: 112 [2019-05-23 11:21:03,152 INFO L146 ILogger]: Without dead ends: 110 [2019-05-23 11:21:03,154 INFO L146 ILogger]: 0 DeclaredPredicates, 148 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=534, Invalid=6776, Unknown=0, NotChecked=0, Total=7310 [2019-05-23 11:21:03,154 INFO L146 ILogger]: Start minimizeSevpa. Operand 110 states. [2019-05-23 11:21:03,159 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 110 to 99. [2019-05-23 11:21:03,159 INFO L146 ILogger]: Start removeUnreachable. Operand 99 states. [2019-05-23 11:21:03,159 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2019-05-23 11:21:03,160 INFO L146 ILogger]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 88 [2019-05-23 11:21:03,160 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:03,160 INFO L146 ILogger]: Abstraction has 99 states and 100 transitions. [2019-05-23 11:21:03,160 INFO L146 ILogger]: Interpolant automaton has 51 states. [2019-05-23 11:21:03,160 INFO L146 ILogger]: Start isEmpty. Operand 99 states and 100 transitions. [2019-05-23 11:21:03,162 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:21:03,162 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:03,162 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:03,162 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:03,163 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:03,163 INFO L146 ILogger]: Analyzing trace with hash -1112623996, now seen corresponding path program 9 times [2019-05-23 11:21:03,163 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:03,163 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:03,164 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:03,164 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:03,164 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:03,174 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:03,971 INFO L146 ILogger]: Checked inductivity of 200 backedges. 93 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:03,971 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:03,971 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 11:21:03,983 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:04,011 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:21:04,011 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:04,012 INFO L146 ILogger]: Trace formula consists of 157 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:21:04,014 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:04,515 INFO L146 ILogger]: Checked inductivity of 200 backedges. 130 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:04,534 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:04,534 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 37 [2019-05-23 11:21:04,535 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:21:04,535 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:21:04,536 INFO L146 ILogger]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:21:04,536 INFO L146 ILogger]: Start difference. First operand 99 states and 100 transitions. Second operand 37 states. [2019-05-23 11:21:04,997 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:04,997 INFO L146 ILogger]: Finished difference Result 174 states and 176 transitions. [2019-05-23 11:21:05,001 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:21:05,001 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 98 [2019-05-23 11:21:05,002 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:05,002 INFO L146 ILogger]: With dead ends: 174 [2019-05-23 11:21:05,002 INFO L146 ILogger]: Without dead ends: 108 [2019-05-23 11:21:05,005 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=492, Invalid=2700, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:21:05,006 INFO L146 ILogger]: Start minimizeSevpa. Operand 108 states. [2019-05-23 11:21:05,016 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 108 to 105. [2019-05-23 11:21:05,017 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:21:05,018 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2019-05-23 11:21:05,019 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 98 [2019-05-23 11:21:05,019 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:05,019 INFO L146 ILogger]: Abstraction has 105 states and 106 transitions. [2019-05-23 11:21:05,019 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:21:05,019 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 106 transitions. [2019-05-23 11:21:05,020 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 105 [2019-05-23 11:21:05,021 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:05,026 INFO L146 ILogger]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:05,026 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:05,026 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:05,027 INFO L146 ILogger]: Analyzing trace with hash -1513575316, now seen corresponding path program 10 times [2019-05-23 11:21:05,027 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:05,027 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:05,029 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:05,029 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:05,029 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:05,044 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:05,766 INFO L146 ILogger]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:05,766 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:05,766 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 11:21:05,776 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:05,800 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:05,801 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:05,802 INFO L146 ILogger]: Trace formula consists of 158 conjuncts, 58 conjunts are in the unsatisfiable core [2019-05-23 11:21:05,805 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:06,717 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-05-23 11:21:06,718 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:06,723 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:06,724 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 11:21:06,724 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2019-05-23 11:21:06,803 INFO L146 ILogger]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:06,822 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:06,822 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 44 [2019-05-23 11:21:06,822 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:21:06,823 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:21:06,823 INFO L146 ILogger]: CoverageRelationStatistics Valid=115, Invalid=1777, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:21:06,824 INFO L146 ILogger]: Start difference. First operand 105 states and 106 transitions. Second operand 44 states. [2019-05-23 11:21:10,172 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:10,173 INFO L146 ILogger]: Finished difference Result 128 states and 129 transitions. [2019-05-23 11:21:10,173 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:21:10,173 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 104 [2019-05-23 11:21:10,173 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:10,174 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:21:10,174 INFO L146 ILogger]: Without dead ends: 126 [2019-05-23 11:21:10,176 INFO L146 ILogger]: 0 DeclaredPredicates, 171 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=414, Invalid=6228, Unknown=0, NotChecked=0, Total=6642 [2019-05-23 11:21:10,176 INFO L146 ILogger]: Start minimizeSevpa. Operand 126 states. [2019-05-23 11:21:10,180 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 126 to 115. [2019-05-23 11:21:10,180 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:21:10,181 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2019-05-23 11:21:10,181 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 104 [2019-05-23 11:21:10,181 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:10,181 INFO L146 ILogger]: Abstraction has 115 states and 116 transitions. [2019-05-23 11:21:10,181 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:21:10,182 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 116 transitions. [2019-05-23 11:21:10,183 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 115 [2019-05-23 11:21:10,183 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:10,183 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:10,183 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:10,184 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:10,184 INFO L146 ILogger]: Analyzing trace with hash 828264607, now seen corresponding path program 11 times [2019-05-23 11:21:10,184 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:10,184 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:10,185 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:10,185 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:10,185 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:10,196 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:10,541 INFO L146 ILogger]: Checked inductivity of 288 backedges. 140 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:10,542 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:10,542 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 11:21:10,551 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:10,592 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:21:10,592 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:10,593 INFO L146 ILogger]: Trace formula consists of 181 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:21:10,595 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:11,457 INFO L146 ILogger]: Checked inductivity of 288 backedges. 186 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:11,478 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:11,479 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 43 [2019-05-23 11:21:11,479 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:21:11,480 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:21:11,480 INFO L146 ILogger]: CoverageRelationStatistics Valid=246, Invalid=1560, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:21:11,480 INFO L146 ILogger]: Start difference. First operand 115 states and 116 transitions. Second operand 43 states. [2019-05-23 11:21:12,722 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:12,723 INFO L146 ILogger]: Finished difference Result 200 states and 202 transitions. [2019-05-23 11:21:12,723 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:21:12,723 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 114 [2019-05-23 11:21:12,724 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:12,724 INFO L146 ILogger]: With dead ends: 200 [2019-05-23 11:21:12,725 INFO L146 ILogger]: Without dead ends: 124 [2019-05-23 11:21:12,727 INFO L146 ILogger]: 0 DeclaredPredicates, 165 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=669, Invalid=3753, Unknown=0, NotChecked=0, Total=4422 [2019-05-23 11:21:12,727 INFO L146 ILogger]: Start minimizeSevpa. Operand 124 states. [2019-05-23 11:21:12,731 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 124 to 121. [2019-05-23 11:21:12,731 INFO L146 ILogger]: Start removeUnreachable. Operand 121 states. [2019-05-23 11:21:12,731 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2019-05-23 11:21:12,732 INFO L146 ILogger]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 114 [2019-05-23 11:21:12,732 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:12,732 INFO L146 ILogger]: Abstraction has 121 states and 122 transitions. [2019-05-23 11:21:12,732 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:21:12,732 INFO L146 ILogger]: Start isEmpty. Operand 121 states and 122 transitions. [2019-05-23 11:21:12,733 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:21:12,733 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:12,734 INFO L146 ILogger]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:12,734 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:12,734 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:12,734 INFO L146 ILogger]: Analyzing trace with hash -962889593, now seen corresponding path program 12 times [2019-05-23 11:21:12,734 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:12,734 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:12,735 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:12,735 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:12,735 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:12,750 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:13,478 INFO L146 ILogger]: Checked inductivity of 326 backedges. 0 proven. 326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:13,478 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:13,478 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 11:21:13,487 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:13,522 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-05-23 11:21:13,523 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:13,524 INFO L146 ILogger]: Trace formula consists of 190 conjuncts, 41 conjunts are in the unsatisfiable core [2019-05-23 11:21:13,526 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:15,541 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:21:15,543 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:15,543 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 19 treesize of output 10 [2019-05-23 11:21:15,544 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:15,551 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:15,551 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:15,552 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2019-05-23 11:21:15,681 INFO L146 ILogger]: Checked inductivity of 326 backedges. 156 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:15,699 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:15,700 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 37] total 68 [2019-05-23 11:21:15,700 INFO L146 ILogger]: Interpolant automaton has 68 states [2019-05-23 11:21:15,701 INFO L146 ILogger]: Constructing interpolant automaton starting with 68 interpolants. [2019-05-23 11:21:15,702 INFO L146 ILogger]: CoverageRelationStatistics Valid=262, Invalid=4294, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:21:15,702 INFO L146 ILogger]: Start difference. First operand 121 states and 122 transitions. Second operand 68 states. [2019-05-23 11:21:24,072 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:24,073 INFO L146 ILogger]: Finished difference Result 227 states and 230 transitions. [2019-05-23 11:21:24,073 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2019-05-23 11:21:24,073 INFO L146 ILogger]: Start accepts. Automaton has 68 states. Word has length 120 [2019-05-23 11:21:24,073 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:24,074 INFO L146 ILogger]: With dead ends: 227 [2019-05-23 11:21:24,074 INFO L146 ILogger]: Without dead ends: 148 [2019-05-23 11:21:24,081 INFO L146 ILogger]: 0 DeclaredPredicates, 263 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8425 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1836, Invalid=29670, Unknown=0, NotChecked=0, Total=31506 [2019-05-23 11:21:24,082 INFO L146 ILogger]: Start minimizeSevpa. Operand 148 states. [2019-05-23 11:21:24,086 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 148 to 137. [2019-05-23 11:21:24,086 INFO L146 ILogger]: Start removeUnreachable. Operand 137 states. [2019-05-23 11:21:24,087 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2019-05-23 11:21:24,087 INFO L146 ILogger]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 120 [2019-05-23 11:21:24,087 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:24,087 INFO L146 ILogger]: Abstraction has 137 states and 138 transitions. [2019-05-23 11:21:24,087 INFO L146 ILogger]: Interpolant automaton has 68 states. [2019-05-23 11:21:24,088 INFO L146 ILogger]: Start isEmpty. Operand 137 states and 138 transitions. [2019-05-23 11:21:24,089 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 137 [2019-05-23 11:21:24,089 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:24,089 INFO L146 ILogger]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:24,089 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:24,089 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:24,090 INFO L146 ILogger]: Analyzing trace with hash 1547783906, now seen corresponding path program 13 times [2019-05-23 11:21:24,090 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:24,090 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:24,090 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:24,091 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:24,091 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:24,108 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:24,907 INFO L146 ILogger]: Checked inductivity of 436 backedges. 0 proven. 436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:24,907 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:24,907 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 11:21:24,917 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:24,948 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:24,950 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 76 conjunts are in the unsatisfiable core [2019-05-23 11:21:24,952 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:26,648 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:21:26,649 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:26,651 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:26,651 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:26,651 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:21:26,796 INFO L146 ILogger]: Checked inductivity of 436 backedges. 0 proven. 436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:26,815 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:26,815 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 40] total 75 [2019-05-23 11:21:26,816 INFO L146 ILogger]: Interpolant automaton has 75 states [2019-05-23 11:21:26,816 INFO L146 ILogger]: Constructing interpolant automaton starting with 75 interpolants. [2019-05-23 11:21:26,817 INFO L146 ILogger]: CoverageRelationStatistics Valid=257, Invalid=5293, Unknown=0, NotChecked=0, Total=5550 [2019-05-23 11:21:26,817 INFO L146 ILogger]: Start difference. First operand 137 states and 138 transitions. Second operand 75 states. [2019-05-23 11:21:30,448 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:30,449 INFO L146 ILogger]: Finished difference Result 160 states and 161 transitions. [2019-05-23 11:21:30,449 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-05-23 11:21:30,449 INFO L146 ILogger]: Start accepts. Automaton has 75 states. Word has length 136 [2019-05-23 11:21:30,450 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:30,451 INFO L146 ILogger]: With dead ends: 160 [2019-05-23 11:21:30,451 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:21:30,453 INFO L146 ILogger]: 0 DeclaredPredicates, 223 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3769 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=759, Invalid=14741, Unknown=0, NotChecked=0, Total=15500 [2019-05-23 11:21:30,453 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:21:30,457 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 147. [2019-05-23 11:21:30,458 INFO L146 ILogger]: Start removeUnreachable. Operand 147 states. [2019-05-23 11:21:30,458 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2019-05-23 11:21:30,458 INFO L146 ILogger]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 136 [2019-05-23 11:21:30,459 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:30,459 INFO L146 ILogger]: Abstraction has 147 states and 148 transitions. [2019-05-23 11:21:30,459 INFO L146 ILogger]: Interpolant automaton has 75 states. [2019-05-23 11:21:30,459 INFO L146 ILogger]: Start isEmpty. Operand 147 states and 148 transitions. [2019-05-23 11:21:30,460 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 147 [2019-05-23 11:21:30,460 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:30,460 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:30,461 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:30,461 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:30,461 INFO L146 ILogger]: Analyzing trace with hash -1939941483, now seen corresponding path program 14 times [2019-05-23 11:21:30,461 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:30,461 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:30,462 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:30,462 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:30,462 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:30,474 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:31,118 INFO L146 ILogger]: Checked inductivity of 512 backedges. 264 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:31,118 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:31,118 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 11:21:31,127 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:31,157 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:31,157 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:31,158 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 35 conjunts are in the unsatisfiable core [2019-05-23 11:21:31,160 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:31,935 INFO L146 ILogger]: Checked inductivity of 512 backedges. 328 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:31,955 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:31,955 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 55 [2019-05-23 11:21:31,955 INFO L146 ILogger]: Interpolant automaton has 55 states [2019-05-23 11:21:31,956 INFO L146 ILogger]: Constructing interpolant automaton starting with 55 interpolants. [2019-05-23 11:21:31,956 INFO L146 ILogger]: CoverageRelationStatistics Valid=386, Invalid=2584, Unknown=0, NotChecked=0, Total=2970 [2019-05-23 11:21:31,957 INFO L146 ILogger]: Start difference. First operand 147 states and 148 transitions. Second operand 55 states. [2019-05-23 11:21:33,311 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:33,311 INFO L146 ILogger]: Finished difference Result 252 states and 254 transitions. [2019-05-23 11:21:33,311 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:21:33,312 INFO L146 ILogger]: Start accepts. Automaton has 55 states. Word has length 146 [2019-05-23 11:21:33,312 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:33,313 INFO L146 ILogger]: With dead ends: 252 [2019-05-23 11:21:33,313 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:21:33,315 INFO L146 ILogger]: 0 DeclaredPredicates, 213 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1107, Invalid=6375, Unknown=0, NotChecked=0, Total=7482 [2019-05-23 11:21:33,315 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:21:33,320 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 153. [2019-05-23 11:21:33,321 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:21:33,321 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2019-05-23 11:21:33,321 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 146 [2019-05-23 11:21:33,322 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:33,322 INFO L146 ILogger]: Abstraction has 153 states and 154 transitions. [2019-05-23 11:21:33,322 INFO L146 ILogger]: Interpolant automaton has 55 states. [2019-05-23 11:21:33,322 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 154 transitions. [2019-05-23 11:21:33,323 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:21:33,323 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:33,323 INFO L146 ILogger]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:33,324 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:33,324 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:33,324 INFO L146 ILogger]: Analyzing trace with hash -691904643, now seen corresponding path program 15 times [2019-05-23 11:21:33,324 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:33,324 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:33,325 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:33,325 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:33,325 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:33,342 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:34,324 INFO L146 ILogger]: Checked inductivity of 562 backedges. 0 proven. 562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:34,325 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:34,325 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:21:34,334 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:34,381 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:21:34,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:34,383 INFO L146 ILogger]: Trace formula consists of 238 conjuncts, 49 conjunts are in the unsatisfiable core [2019-05-23 11:21:34,386 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:37,551 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:21:37,553 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:37,553 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 19 treesize of output 10 [2019-05-23 11:21:37,553 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:37,559 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:37,559 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:37,559 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2019-05-23 11:21:37,748 INFO L146 ILogger]: Checked inductivity of 562 backedges. 231 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:37,766 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:37,767 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 45] total 84 [2019-05-23 11:21:37,767 INFO L146 ILogger]: Interpolant automaton has 84 states [2019-05-23 11:21:37,767 INFO L146 ILogger]: Constructing interpolant automaton starting with 84 interpolants. [2019-05-23 11:21:37,768 INFO L146 ILogger]: CoverageRelationStatistics Valid=353, Invalid=6619, Unknown=0, NotChecked=0, Total=6972 [2019-05-23 11:21:37,769 INFO L146 ILogger]: Start difference. First operand 153 states and 154 transitions. Second operand 84 states. [2019-05-23 11:21:38,758 WARN L146 ILogger]: Spent 112.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19