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-industry-pattern/array_monotonic_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:21:28,392 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:21:28,396 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:21:28,413 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:21:28,414 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:21:28,416 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:21:28,417 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:21:28,420 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:21:28,423 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:21:28,431 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:21:28,432 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:21:28,432 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:21:28,437 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:21:28,439 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:21:28,442 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:21:28,443 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:21:28,446 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:21:28,451 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:21:28,454 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:21:28,458 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:21:28,459 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:21:28,461 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:21:28,465 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:21:28,465 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:21:28,465 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:21:28,466 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:21:28,467 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:21:28,471 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:21:28,472 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:21:28,473 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:21:28,474 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:21:28,476 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:21:28,478 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:21:28,478 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:21:28,479 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:21:28,479 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:21:28,479 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:21:28,481 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:21:28,482 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:21:28,482 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:21:28,509 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:21:28,510 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:21:28,511 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:21:28,511 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:21:28,513 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:21:28,513 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:21:28,513 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:21:28,514 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:21:28,514 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:21:28,514 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:21:28,514 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:21:28,514 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:21:28,515 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:21:28,515 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:21:28,515 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:21:28,515 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:21:28,515 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:21:28,517 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:21:28,517 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:21:28,517 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:21:28,518 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:21:28,518 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:21:28,518 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:21:28,518 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:21:28,519 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:21:28,519 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:21:28,519 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:21:28,519 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:21:28,519 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 11:21:28,567 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:21:28,579 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:21:28,583 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:21:28,584 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:21:28,585 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:21:28,586 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-industry-pattern/array_monotonic_true-unreach-call_true-termination.i [2019-05-23 11:21:28,641 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b5a6f8d1/dbd4c8e45b7b42a4a407e812f9aa0b32/FLAG3637c661a [2019-05-23 11:21:29,094 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:21:29,095 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-industry-pattern/array_monotonic_true-unreach-call_true-termination.i [2019-05-23 11:21:29,101 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b5a6f8d1/dbd4c8e45b7b42a4a407e812f9aa0b32/FLAG3637c661a [2019-05-23 11:21:29,506 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b5a6f8d1/dbd4c8e45b7b42a4a407e812f9aa0b32 [2019-05-23 11:21:29,514 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:21:29,516 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:21:29,517 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:29,517 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:21:29,521 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:21:29,522 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:29" (1/1) ... [2019-05-23 11:21:29,525 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22bc2786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29, skipping insertion in model container [2019-05-23 11:21:29,526 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:29" (1/1) ... [2019-05-23 11:21:29,533 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:21:29,551 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:21:29,738 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:29,743 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:21:29,762 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:29,781 INFO L146 ILogger]: Completed translation [2019-05-23 11:21:29,781 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29 WrapperNode [2019-05-23 11:21:29,782 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:29,782 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:29,782 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:21:29,783 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:21:29,790 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29" (1/1) ... [2019-05-23 11:21:29,797 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29" (1/1) ... [2019-05-23 11:21:29,815 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:29,815 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:21:29,815 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:21:29,816 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:21:29,825 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29" (1/1) ... [2019-05-23 11:21:29,826 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29" (1/1) ... [2019-05-23 11:21:29,828 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29" (1/1) ... [2019-05-23 11:21:29,828 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29" (1/1) ... [2019-05-23 11:21:29,833 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29" (1/1) ... [2019-05-23 11:21:29,928 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29" (1/1) ... [2019-05-23 11:21:29,931 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29" (1/1) ... [2019-05-23 11:21:29,933 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:21:29,933 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:21:29,933 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:21:29,934 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:21:29,934 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29" (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 11:21:29,995 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:21:29,995 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:21:29,995 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:21:29,996 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:21:29,996 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:21:29,996 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:21:30,424 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:21:30,424 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:21:30,426 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:30 BoogieIcfgContainer [2019-05-23 11:21:30,426 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:21:30,427 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:21:30,427 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:21:30,431 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:21:30,431 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:21:29" (1/3) ... [2019-05-23 11:21:30,432 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314463b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:30, skipping insertion in model container [2019-05-23 11:21:30,432 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:29" (2/3) ... [2019-05-23 11:21:30,432 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314463b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:30, skipping insertion in model container [2019-05-23 11:21:30,433 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:30" (3/3) ... [2019-05-23 11:21:30,434 INFO L146 ILogger]: Analyzing ICFG array_monotonic_true-unreach-call_true-termination.i [2019-05-23 11:21:30,442 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:21:30,450 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:21:30,467 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:21:30,494 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:21:30,494 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:21:30,495 INFO L146 ILogger]: Hoare is true [2019-05-23 11:21:30,495 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:21:30,495 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:21:30,495 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:21:30,495 INFO L146 ILogger]: Difference is false [2019-05-23 11:21:30,496 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:21:30,496 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:21:30,509 INFO L146 ILogger]: Start isEmpty. Operand 40 states. [2019-05-23 11:21:30,515 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:21:30,515 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:30,516 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:30,518 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:30,522 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:30,523 INFO L146 ILogger]: Analyzing trace with hash -61592339, now seen corresponding path program 1 times [2019-05-23 11:21:30,524 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:30,525 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:30,568 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:30,568 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:30,569 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:30,609 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:30,643 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 11:21:30,645 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:30,646 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:21:30,648 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:21:30,658 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:21:30,659 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:21:30,661 INFO L146 ILogger]: Start difference. First operand 40 states. Second operand 2 states. [2019-05-23 11:21:30,679 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:30,679 INFO L146 ILogger]: Finished difference Result 62 states and 71 transitions. [2019-05-23 11:21:30,679 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:21:30,681 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 20 [2019-05-23 11:21:30,681 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:30,691 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:21:30,691 INFO L146 ILogger]: Without dead ends: 33 [2019-05-23 11:21:30,694 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 11:21:30,708 INFO L146 ILogger]: Start minimizeSevpa. Operand 33 states. [2019-05-23 11:21:30,721 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-05-23 11:21:30,722 INFO L146 ILogger]: Start removeUnreachable. Operand 33 states. [2019-05-23 11:21:30,723 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2019-05-23 11:21:30,725 INFO L146 ILogger]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 20 [2019-05-23 11:21:30,725 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:30,725 INFO L146 ILogger]: Abstraction has 33 states and 36 transitions. [2019-05-23 11:21:30,725 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:21:30,726 INFO L146 ILogger]: Start isEmpty. Operand 33 states and 36 transitions. [2019-05-23 11:21:30,726 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:21:30,727 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:30,727 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:30,727 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:30,727 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:30,728 INFO L146 ILogger]: Analyzing trace with hash 1909886015, now seen corresponding path program 1 times [2019-05-23 11:21:30,728 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:30,728 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:30,729 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:30,729 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:30,729 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:30,743 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:30,807 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 11:21:30,808 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:30,808 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:21:30,809 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:21:30,810 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:21:30,811 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:21:30,811 INFO L146 ILogger]: Start difference. First operand 33 states and 36 transitions. Second operand 3 states. [2019-05-23 11:21:30,928 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:30,929 INFO L146 ILogger]: Finished difference Result 72 states and 79 transitions. [2019-05-23 11:21:30,929 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:21:30,929 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 20 [2019-05-23 11:21:30,930 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:30,931 INFO L146 ILogger]: With dead ends: 72 [2019-05-23 11:21:30,931 INFO L146 ILogger]: Without dead ends: 57 [2019-05-23 11:21:30,932 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:21:30,933 INFO L146 ILogger]: Start minimizeSevpa. Operand 57 states. [2019-05-23 11:21:30,937 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 57 to 34. [2019-05-23 11:21:30,938 INFO L146 ILogger]: Start removeUnreachable. Operand 34 states. [2019-05-23 11:21:30,939 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2019-05-23 11:21:30,939 INFO L146 ILogger]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2019-05-23 11:21:30,939 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:30,939 INFO L146 ILogger]: Abstraction has 34 states and 37 transitions. [2019-05-23 11:21:30,939 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:21:30,940 INFO L146 ILogger]: Start isEmpty. Operand 34 states and 37 transitions. [2019-05-23 11:21:30,941 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 29 [2019-05-23 11:21:30,941 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:30,941 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:30,941 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:30,941 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:30,942 INFO L146 ILogger]: Analyzing trace with hash -904890870, now seen corresponding path program 1 times [2019-05-23 11:21:30,942 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:30,942 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:30,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:30,943 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:30,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:30,966 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:31,031 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:31,032 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:31,032 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 11:21:31,042 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:31,076 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:31,078 INFO L146 ILogger]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:21:31,085 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:31,143 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:31,163 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:31,163 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:21:31,164 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:21:31,164 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:21:31,165 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:21:31,165 INFO L146 ILogger]: Start difference. First operand 34 states and 37 transitions. Second operand 5 states. [2019-05-23 11:21:31,513 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:31,514 INFO L146 ILogger]: Finished difference Result 96 states and 105 transitions. [2019-05-23 11:21:31,516 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:21:31,516 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 28 [2019-05-23 11:21:31,517 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:31,518 INFO L146 ILogger]: With dead ends: 96 [2019-05-23 11:21:31,518 INFO L146 ILogger]: Without dead ends: 81 [2019-05-23 11:21:31,519 INFO L146 ILogger]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:21:31,519 INFO L146 ILogger]: Start minimizeSevpa. Operand 81 states. [2019-05-23 11:21:31,530 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 81 to 44. [2019-05-23 11:21:31,531 INFO L146 ILogger]: Start removeUnreachable. Operand 44 states. [2019-05-23 11:21:31,532 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2019-05-23 11:21:31,534 INFO L146 ILogger]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 28 [2019-05-23 11:21:31,535 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:31,535 INFO L146 ILogger]: Abstraction has 44 states and 48 transitions. [2019-05-23 11:21:31,535 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:21:31,535 INFO L146 ILogger]: Start isEmpty. Operand 44 states and 48 transitions. [2019-05-23 11:21:31,537 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:21:31,537 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:31,537 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:31,538 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:31,539 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:31,539 INFO L146 ILogger]: Analyzing trace with hash -1265277739, now seen corresponding path program 2 times [2019-05-23 11:21:31,539 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:31,539 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:31,540 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:31,540 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:31,541 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:31,573 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:31,717 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:31,718 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:31,718 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 11:21:31,734 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:31,778 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:31,779 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:31,780 INFO L146 ILogger]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:21:31,782 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:31,809 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:31,833 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:31,833 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:21:31,833 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:21:31,834 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:21:31,834 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:21:31,834 INFO L146 ILogger]: Start difference. First operand 44 states and 48 transitions. Second operand 6 states. [2019-05-23 11:21:32,070 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:32,070 INFO L146 ILogger]: Finished difference Result 120 states and 131 transitions. [2019-05-23 11:21:32,073 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:21:32,073 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 36 [2019-05-23 11:21:32,073 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:32,074 INFO L146 ILogger]: With dead ends: 120 [2019-05-23 11:21:32,075 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:21:32,075 INFO L146 ILogger]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:21:32,076 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:21:32,082 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 54. [2019-05-23 11:21:32,083 INFO L146 ILogger]: Start removeUnreachable. Operand 54 states. [2019-05-23 11:21:32,084 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2019-05-23 11:21:32,084 INFO L146 ILogger]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 36 [2019-05-23 11:21:32,084 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:32,085 INFO L146 ILogger]: Abstraction has 54 states and 59 transitions. [2019-05-23 11:21:32,085 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:21:32,085 INFO L146 ILogger]: Start isEmpty. Operand 54 states and 59 transitions. [2019-05-23 11:21:32,086 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 45 [2019-05-23 11:21:32,086 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:32,086 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:32,087 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:32,087 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:32,087 INFO L146 ILogger]: Analyzing trace with hash 210786464, now seen corresponding path program 3 times [2019-05-23 11:21:32,087 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:32,087 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:32,088 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:32,089 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:32,089 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:32,105 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:32,190 INFO L146 ILogger]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:32,190 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:32,190 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 11:21:32,207 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:32,279 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:21:32,279 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:32,282 INFO L146 ILogger]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:21:32,285 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:32,329 INFO L146 ILogger]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:32,353 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:32,353 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:21:32,353 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:21:32,354 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:21:32,354 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:21:32,354 INFO L146 ILogger]: Start difference. First operand 54 states and 59 transitions. Second operand 7 states. [2019-05-23 11:21:32,808 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:32,809 INFO L146 ILogger]: Finished difference Result 144 states and 157 transitions. [2019-05-23 11:21:32,809 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:21:32,809 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 44 [2019-05-23 11:21:32,810 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:32,811 INFO L146 ILogger]: With dead ends: 144 [2019-05-23 11:21:32,811 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:21:32,812 INFO L146 ILogger]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:21:32,812 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:21:32,818 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 64. [2019-05-23 11:21:32,818 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:21:32,819 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2019-05-23 11:21:32,819 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 44 [2019-05-23 11:21:32,820 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:32,820 INFO L146 ILogger]: Abstraction has 64 states and 70 transitions. [2019-05-23 11:21:32,820 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:21:32,820 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 70 transitions. [2019-05-23 11:21:32,821 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 53 [2019-05-23 11:21:32,822 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:32,822 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:32,822 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:32,822 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:32,823 INFO L146 ILogger]: Analyzing trace with hash 1378636139, now seen corresponding path program 4 times [2019-05-23 11:21:32,823 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:32,823 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:32,824 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:32,824 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:32,824 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:32,841 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:33,357 INFO L146 ILogger]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:33,357 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:33,357 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 11:21:33,368 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:33,390 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:33,390 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:33,391 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:21:33,394 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:33,434 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:21:33,434 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:33,472 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:33,473 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:33,473 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:3 [2019-05-23 11:21:33,568 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:33,569 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 47 [2019-05-23 11:21:33,573 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:33,683 WARN L146 ILogger]: Spent 108.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2019-05-23 11:21:33,686 INFO L146 ILogger]: treesize reduction 24, result has 48.9 percent of original size [2019-05-23 11:21:33,687 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 11:21:33,687 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:12 [2019-05-23 11:21:33,743 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:33,744 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 47 [2019-05-23 11:21:33,747 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:33,854 WARN L146 ILogger]: Spent 106.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2019-05-23 11:21:33,854 INFO L146 ILogger]: treesize reduction 24, result has 48.9 percent of original size [2019-05-23 11:21:33,855 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 11:21:33,855 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:12 [2019-05-23 11:21:34,076 WARN L146 ILogger]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-05-23 11:21:34,076 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:34,077 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 47 [2019-05-23 11:21:34,078 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:34,101 INFO L146 ILogger]: treesize reduction 24, result has 48.9 percent of original size [2019-05-23 11:21:34,102 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 11:21:34,103 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:8 [2019-05-23 11:21:34,202 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 16 treesize of output 8 [2019-05-23 11:21:34,203 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:34,211 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:34,212 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 11:21:34,212 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2019-05-23 11:21:34,241 INFO L146 ILogger]: Checked inductivity of 52 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:34,266 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:34,266 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2019-05-23 11:21:34,267 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:21:34,267 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:21:34,268 INFO L146 ILogger]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:21:34,268 INFO L146 ILogger]: Start difference. First operand 64 states and 70 transitions. Second operand 14 states. [2019-05-23 11:21:35,054 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:35,055 INFO L146 ILogger]: Finished difference Result 295 states and 323 transitions. [2019-05-23 11:21:35,056 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:21:35,056 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 52 [2019-05-23 11:21:35,057 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:35,061 INFO L146 ILogger]: With dead ends: 295 [2019-05-23 11:21:35,062 INFO L146 ILogger]: Without dead ends: 280 [2019-05-23 11:21:35,063 INFO L146 ILogger]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:21:35,064 INFO L146 ILogger]: Start minimizeSevpa. Operand 280 states. [2019-05-23 11:21:35,083 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 280 to 120. [2019-05-23 11:21:35,083 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:21:35,085 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2019-05-23 11:21:35,085 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 52 [2019-05-23 11:21:35,085 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:35,085 INFO L146 ILogger]: Abstraction has 120 states and 132 transitions. [2019-05-23 11:21:35,086 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:21:35,089 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 132 transitions. [2019-05-23 11:21:35,091 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 62 [2019-05-23 11:21:35,091 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:35,091 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:35,091 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:35,091 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:35,092 INFO L146 ILogger]: Analyzing trace with hash -1880418215, now seen corresponding path program 1 times [2019-05-23 11:21:35,094 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:35,094 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:35,095 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:35,096 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:35,096 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:35,135 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:35,267 INFO L146 ILogger]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:35,267 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:35,268 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 11:21:35,279 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:35,299 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:35,299 INFO L146 ILogger]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:21:35,302 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:35,324 INFO L146 ILogger]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:35,354 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:35,354 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:21:35,355 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:21:35,355 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:21:35,355 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:21:35,356 INFO L146 ILogger]: Start difference. First operand 120 states and 132 transitions. Second operand 9 states. [2019-05-23 11:21:35,527 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:35,528 INFO L146 ILogger]: Finished difference Result 261 states and 286 transitions. [2019-05-23 11:21:35,529 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:21:35,529 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 61 [2019-05-23 11:21:35,529 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:35,531 INFO L146 ILogger]: With dead ends: 261 [2019-05-23 11:21:35,531 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:21:35,532 INFO L146 ILogger]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:21:35,533 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:21:35,542 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 140. [2019-05-23 11:21:35,542 INFO L146 ILogger]: Start removeUnreachable. Operand 140 states. [2019-05-23 11:21:35,544 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2019-05-23 11:21:35,544 INFO L146 ILogger]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 61 [2019-05-23 11:21:35,545 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:35,545 INFO L146 ILogger]: Abstraction has 140 states and 154 transitions. [2019-05-23 11:21:35,545 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:21:35,545 INFO L146 ILogger]: Start isEmpty. Operand 140 states and 154 transitions. [2019-05-23 11:21:35,547 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:21:35,547 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:35,547 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:35,547 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:35,547 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:35,548 INFO L146 ILogger]: Analyzing trace with hash 265046052, now seen corresponding path program 2 times [2019-05-23 11:21:35,548 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:35,548 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:35,549 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:35,549 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:35,549 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:35,566 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:35,704 INFO L146 ILogger]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:35,705 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:35,705 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 11:21:35,713 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:35,761 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:35,761 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:35,762 INFO L146 ILogger]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:21:35,765 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:35,879 INFO L146 ILogger]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:35,913 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:35,914 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:21:35,914 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:21:35,914 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:21:35,915 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:21:35,915 INFO L146 ILogger]: Start difference. First operand 140 states and 154 transitions. Second operand 10 states. [2019-05-23 11:21:36,148 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:36,148 INFO L146 ILogger]: Finished difference Result 295 states and 323 transitions. [2019-05-23 11:21:36,148 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:21:36,149 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 69 [2019-05-23 11:21:36,149 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:36,151 INFO L146 ILogger]: With dead ends: 295 [2019-05-23 11:21:36,151 INFO L146 ILogger]: Without dead ends: 276 [2019-05-23 11:21:36,152 INFO L146 ILogger]: 0 DeclaredPredicates, 77 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:21:36,153 INFO L146 ILogger]: Start minimizeSevpa. Operand 276 states. [2019-05-23 11:21:36,161 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 276 to 160. [2019-05-23 11:21:36,161 INFO L146 ILogger]: Start removeUnreachable. Operand 160 states. [2019-05-23 11:21:36,162 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2019-05-23 11:21:36,162 INFO L146 ILogger]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 69 [2019-05-23 11:21:36,163 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:36,163 INFO L146 ILogger]: Abstraction has 160 states and 176 transitions. [2019-05-23 11:21:36,163 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:21:36,163 INFO L146 ILogger]: Start isEmpty. Operand 160 states and 176 transitions. [2019-05-23 11:21:36,165 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 78 [2019-05-23 11:21:36,165 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:36,165 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:36,165 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:36,165 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:36,166 INFO L146 ILogger]: Analyzing trace with hash 1095924975, now seen corresponding path program 3 times [2019-05-23 11:21:36,166 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:36,166 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:36,167 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:36,167 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:36,167 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:36,181 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:36,301 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:36,301 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:36,301 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 11:21:36,318 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:36,369 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:21:36,370 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:36,370 INFO L146 ILogger]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:21:36,374 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:36,408 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:36,427 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:36,427 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:21:36,427 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:21:36,428 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:21:36,428 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:21:36,428 INFO L146 ILogger]: Start difference. First operand 160 states and 176 transitions. Second operand 11 states. [2019-05-23 11:21:36,589 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:36,589 INFO L146 ILogger]: Finished difference Result 329 states and 360 transitions. [2019-05-23 11:21:36,590 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:21:36,590 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 77 [2019-05-23 11:21:36,590 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:36,593 INFO L146 ILogger]: With dead ends: 329 [2019-05-23 11:21:36,593 INFO L146 ILogger]: Without dead ends: 310 [2019-05-23 11:21:36,594 INFO L146 ILogger]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:21:36,595 INFO L146 ILogger]: Start minimizeSevpa. Operand 310 states. [2019-05-23 11:21:36,602 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 310 to 180. [2019-05-23 11:21:36,602 INFO L146 ILogger]: Start removeUnreachable. Operand 180 states. [2019-05-23 11:21:36,603 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 180 states to 180 states and 198 transitions. [2019-05-23 11:21:36,604 INFO L146 ILogger]: Start accepts. Automaton has 180 states and 198 transitions. Word has length 77 [2019-05-23 11:21:36,604 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:36,604 INFO L146 ILogger]: Abstraction has 180 states and 198 transitions. [2019-05-23 11:21:36,604 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:21:36,604 INFO L146 ILogger]: Start isEmpty. Operand 180 states and 198 transitions. [2019-05-23 11:21:36,606 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:21:36,606 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:36,606 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:36,606 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:36,606 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:36,607 INFO L146 ILogger]: Analyzing trace with hash 94942906, now seen corresponding path program 4 times [2019-05-23 11:21:36,607 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:36,607 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:36,608 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:36,608 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:36,608 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:36,621 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:36,748 INFO L146 ILogger]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:36,748 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:36,749 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 11:21:36,761 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:36,797 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:36,797 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:36,799 INFO L146 ILogger]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:21:36,803 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:36,843 INFO L146 ILogger]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:36,864 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:36,864 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:21:36,865 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:21:36,865 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:21:36,866 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:21:36,866 INFO L146 ILogger]: Start difference. First operand 180 states and 198 transitions. Second operand 12 states. [2019-05-23 11:21:37,025 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:37,025 INFO L146 ILogger]: Finished difference Result 363 states and 397 transitions. [2019-05-23 11:21:37,026 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:21:37,026 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 85 [2019-05-23 11:21:37,026 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:37,028 INFO L146 ILogger]: With dead ends: 363 [2019-05-23 11:21:37,028 INFO L146 ILogger]: Without dead ends: 344 [2019-05-23 11:21:37,029 INFO L146 ILogger]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:21:37,030 INFO L146 ILogger]: Start minimizeSevpa. Operand 344 states. [2019-05-23 11:21:37,036 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 344 to 200. [2019-05-23 11:21:37,036 INFO L146 ILogger]: Start removeUnreachable. Operand 200 states. [2019-05-23 11:21:37,037 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 200 states to 200 states and 220 transitions. [2019-05-23 11:21:37,037 INFO L146 ILogger]: Start accepts. Automaton has 200 states and 220 transitions. Word has length 85 [2019-05-23 11:21:37,038 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:37,038 INFO L146 ILogger]: Abstraction has 200 states and 220 transitions. [2019-05-23 11:21:37,038 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:21:37,038 INFO L146 ILogger]: Start isEmpty. Operand 200 states and 220 transitions. [2019-05-23 11:21:37,039 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:21:37,039 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:37,039 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:37,040 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:37,040 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:37,040 INFO L146 ILogger]: Analyzing trace with hash -486935163, now seen corresponding path program 5 times [2019-05-23 11:21:37,040 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:37,040 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:37,041 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:37,041 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:37,041 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:37,057 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:37,239 INFO L146 ILogger]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:37,240 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:37,240 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 11:21:37,253 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:37,366 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:21:37,366 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:37,367 INFO L146 ILogger]: Trace formula consists of 148 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:21:37,381 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:37,423 INFO L146 ILogger]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:37,443 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:37,444 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:21:37,444 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:21:37,444 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:21:37,445 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:21:37,445 INFO L146 ILogger]: Start difference. First operand 200 states and 220 transitions. Second operand 13 states. [2019-05-23 11:21:37,676 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:37,676 INFO L146 ILogger]: Finished difference Result 397 states and 434 transitions. [2019-05-23 11:21:37,678 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:21:37,678 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 93 [2019-05-23 11:21:37,679 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:37,681 INFO L146 ILogger]: With dead ends: 397 [2019-05-23 11:21:37,681 INFO L146 ILogger]: Without dead ends: 378 [2019-05-23 11:21:37,682 INFO L146 ILogger]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:21:37,682 INFO L146 ILogger]: Start minimizeSevpa. Operand 378 states. [2019-05-23 11:21:37,688 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 378 to 220. [2019-05-23 11:21:37,689 INFO L146 ILogger]: Start removeUnreachable. Operand 220 states. [2019-05-23 11:21:37,689 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 220 states to 220 states and 242 transitions. [2019-05-23 11:21:37,692 INFO L146 ILogger]: Start accepts. Automaton has 220 states and 242 transitions. Word has length 93 [2019-05-23 11:21:37,692 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:37,692 INFO L146 ILogger]: Abstraction has 220 states and 242 transitions. [2019-05-23 11:21:37,692 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:21:37,693 INFO L146 ILogger]: Start isEmpty. Operand 220 states and 242 transitions. [2019-05-23 11:21:37,694 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 102 [2019-05-23 11:21:37,694 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:37,694 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:37,694 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:37,694 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:37,695 INFO L146 ILogger]: Analyzing trace with hash 74529104, now seen corresponding path program 6 times [2019-05-23 11:21:37,695 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:37,695 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:37,696 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:37,696 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:37,696 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:37,709 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:37,892 INFO L146 ILogger]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:37,893 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:37,893 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:21:37,902 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:38,005 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:21:38,005 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:38,007 INFO L146 ILogger]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:21:38,010 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:38,040 INFO L146 ILogger]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:38,067 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:38,067 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-05-23 11:21:38,068 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:21:38,068 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:21:38,068 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:21:38,069 INFO L146 ILogger]: Start difference. First operand 220 states and 242 transitions. Second operand 14 states. [2019-05-23 11:21:38,364 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:38,364 INFO L146 ILogger]: Finished difference Result 431 states and 471 transitions. [2019-05-23 11:21:38,365 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:21:38,365 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 101 [2019-05-23 11:21:38,365 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:38,369 INFO L146 ILogger]: With dead ends: 431 [2019-05-23 11:21:38,369 INFO L146 ILogger]: Without dead ends: 412 [2019-05-23 11:21:38,370 INFO L146 ILogger]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:21:38,372 INFO L146 ILogger]: Start minimizeSevpa. Operand 412 states. [2019-05-23 11:21:38,380 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 412 to 240. [2019-05-23 11:21:38,380 INFO L146 ILogger]: Start removeUnreachable. Operand 240 states. [2019-05-23 11:21:38,381 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 240 states to 240 states and 264 transitions. [2019-05-23 11:21:38,381 INFO L146 ILogger]: Start accepts. Automaton has 240 states and 264 transitions. Word has length 101 [2019-05-23 11:21:38,382 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:38,383 INFO L146 ILogger]: Abstraction has 240 states and 264 transitions. [2019-05-23 11:21:38,383 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:21:38,383 INFO L146 ILogger]: Start isEmpty. Operand 240 states and 264 transitions. [2019-05-23 11:21:38,384 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:21:38,384 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:38,385 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:38,385 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:38,385 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:38,385 INFO L146 ILogger]: Analyzing trace with hash 976847387, now seen corresponding path program 7 times [2019-05-23 11:21:38,385 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:38,386 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:38,387 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:38,387 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:38,387 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:38,400 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:38,650 INFO L146 ILogger]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:38,650 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:38,650 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 11:21:38,660 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:38,691 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:38,691 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:21:38,693 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:38,736 INFO L146 ILogger]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:38,756 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:38,756 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:21:38,756 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:21:38,756 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:21:38,757 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:21:38,757 INFO L146 ILogger]: Start difference. First operand 240 states and 264 transitions. Second operand 15 states. [2019-05-23 11:21:39,001 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:39,001 INFO L146 ILogger]: Finished difference Result 465 states and 508 transitions. [2019-05-23 11:21:39,001 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:21:39,002 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 109 [2019-05-23 11:21:39,002 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:39,005 INFO L146 ILogger]: With dead ends: 465 [2019-05-23 11:21:39,005 INFO L146 ILogger]: Without dead ends: 446 [2019-05-23 11:21:39,006 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:21:39,007 INFO L146 ILogger]: Start minimizeSevpa. Operand 446 states. [2019-05-23 11:21:39,013 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 446 to 260. [2019-05-23 11:21:39,013 INFO L146 ILogger]: Start removeUnreachable. Operand 260 states. [2019-05-23 11:21:39,014 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 260 states to 260 states and 286 transitions. [2019-05-23 11:21:39,014 INFO L146 ILogger]: Start accepts. Automaton has 260 states and 286 transitions. Word has length 109 [2019-05-23 11:21:39,015 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:39,015 INFO L146 ILogger]: Abstraction has 260 states and 286 transitions. [2019-05-23 11:21:39,015 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:21:39,015 INFO L146 ILogger]: Start isEmpty. Operand 260 states and 286 transitions. [2019-05-23 11:21:39,016 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 118 [2019-05-23 11:21:39,016 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:39,016 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:39,017 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:39,017 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:39,017 INFO L146 ILogger]: Analyzing trace with hash -109195290, now seen corresponding path program 8 times [2019-05-23 11:21:39,017 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:39,017 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:39,018 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:39,018 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:39,018 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:39,032 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:39,215 INFO L146 ILogger]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:39,215 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:39,215 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 11:21:39,224 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:39,264 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:39,264 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:39,266 INFO L146 ILogger]: Trace formula consists of 181 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:21:39,268 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:39,387 INFO L146 ILogger]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:39,417 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:39,417 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:21:39,418 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:21:39,418 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:21:39,418 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:21:39,418 INFO L146 ILogger]: Start difference. First operand 260 states and 286 transitions. Second operand 16 states. [2019-05-23 11:21:40,988 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:40,988 INFO L146 ILogger]: Finished difference Result 499 states and 545 transitions. [2019-05-23 11:21:40,989 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:21:40,989 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 117 [2019-05-23 11:21:40,990 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:40,993 INFO L146 ILogger]: With dead ends: 499 [2019-05-23 11:21:40,993 INFO L146 ILogger]: Without dead ends: 480 [2019-05-23 11:21:40,994 INFO L146 ILogger]: 0 DeclaredPredicates, 131 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:21:40,995 INFO L146 ILogger]: Start minimizeSevpa. Operand 480 states. [2019-05-23 11:21:41,007 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 480 to 280. [2019-05-23 11:21:41,007 INFO L146 ILogger]: Start removeUnreachable. Operand 280 states. [2019-05-23 11:21:41,009 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 280 states to 280 states and 308 transitions. [2019-05-23 11:21:41,009 INFO L146 ILogger]: Start accepts. Automaton has 280 states and 308 transitions. Word has length 117 [2019-05-23 11:21:41,010 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:41,010 INFO L146 ILogger]: Abstraction has 280 states and 308 transitions. [2019-05-23 11:21:41,010 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:21:41,010 INFO L146 ILogger]: Start isEmpty. Operand 280 states and 308 transitions. [2019-05-23 11:21:41,013 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 126 [2019-05-23 11:21:41,013 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:41,013 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:41,014 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:41,014 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:41,014 INFO L146 ILogger]: Analyzing trace with hash 1550394033, now seen corresponding path program 9 times [2019-05-23 11:21:41,014 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:41,015 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:41,015 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:41,018 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:41,018 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:41,042 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:41,579 INFO L146 ILogger]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:41,579 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:41,580 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 11:21:41,590 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:41,713 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2019-05-23 11:21:41,713 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:41,714 INFO L146 ILogger]: Trace formula consists of 192 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:21:41,716 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:41,743 INFO L146 ILogger]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:41,769 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:41,769 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:21:41,770 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:21:41,770 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:21:41,770 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:21:41,771 INFO L146 ILogger]: Start difference. First operand 280 states and 308 transitions. Second operand 17 states. [2019-05-23 11:21:42,998 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:42,998 INFO L146 ILogger]: Finished difference Result 533 states and 582 transitions. [2019-05-23 11:21:42,998 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:21:42,999 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 125 [2019-05-23 11:21:42,999 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:43,002 INFO L146 ILogger]: With dead ends: 533 [2019-05-23 11:21:43,002 INFO L146 ILogger]: Without dead ends: 514 [2019-05-23 11:21:43,003 INFO L146 ILogger]: 0 DeclaredPredicates, 140 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:21:43,004 INFO L146 ILogger]: Start minimizeSevpa. Operand 514 states. [2019-05-23 11:21:43,011 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 514 to 300. [2019-05-23 11:21:43,011 INFO L146 ILogger]: Start removeUnreachable. Operand 300 states. [2019-05-23 11:21:43,012 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 300 states to 300 states and 330 transitions. [2019-05-23 11:21:43,012 INFO L146 ILogger]: Start accepts. Automaton has 300 states and 330 transitions. Word has length 125 [2019-05-23 11:21:43,013 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:43,013 INFO L146 ILogger]: Abstraction has 300 states and 330 transitions. [2019-05-23 11:21:43,013 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:21:43,013 INFO L146 ILogger]: Start isEmpty. Operand 300 states and 330 transitions. [2019-05-23 11:21:43,014 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:21:43,014 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:43,015 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:43,015 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:43,015 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:43,015 INFO L146 ILogger]: Analyzing trace with hash 572947068, now seen corresponding path program 10 times [2019-05-23 11:21:43,015 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:43,016 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:43,016 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:43,016 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:43,017 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:43,029 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:43,778 INFO L146 ILogger]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:43,779 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:43,779 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:43,788 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:43,865 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:43,865 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:43,867 INFO L146 ILogger]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:21:43,870 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:43,901 INFO L146 ILogger]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:43,928 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:43,928 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:21:43,928 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:21:43,928 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:21:43,929 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:21:43,929 INFO L146 ILogger]: Start difference. First operand 300 states and 330 transitions. Second operand 18 states. [2019-05-23 11:21:44,183 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:44,183 INFO L146 ILogger]: Finished difference Result 567 states and 619 transitions. [2019-05-23 11:21:44,183 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:21:44,184 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 133 [2019-05-23 11:21:44,184 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:44,188 INFO L146 ILogger]: With dead ends: 567 [2019-05-23 11:21:44,188 INFO L146 ILogger]: Without dead ends: 548 [2019-05-23 11:21:44,189 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:21:44,190 INFO L146 ILogger]: Start minimizeSevpa. Operand 548 states. [2019-05-23 11:21:44,200 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 548 to 320. [2019-05-23 11:21:44,200 INFO L146 ILogger]: Start removeUnreachable. Operand 320 states. [2019-05-23 11:21:44,201 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 320 states to 320 states and 352 transitions. [2019-05-23 11:21:44,202 INFO L146 ILogger]: Start accepts. Automaton has 320 states and 352 transitions. Word has length 133 [2019-05-23 11:21:44,202 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:44,202 INFO L146 ILogger]: Abstraction has 320 states and 352 transitions. [2019-05-23 11:21:44,202 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:21:44,202 INFO L146 ILogger]: Start isEmpty. Operand 320 states and 352 transitions. [2019-05-23 11:21:44,204 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 142 [2019-05-23 11:21:44,204 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:44,204 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:44,205 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:44,205 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:44,205 INFO L146 ILogger]: Analyzing trace with hash -1360996537, now seen corresponding path program 11 times [2019-05-23 11:21:44,205 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:44,206 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:44,206 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:44,207 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:44,207 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:44,221 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:44,948 INFO L146 ILogger]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:44,949 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:44,949 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 11:21:44,958 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:45,148 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2019-05-23 11:21:45,148 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:45,150 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:21:45,152 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:45,194 INFO L146 ILogger]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:45,216 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:45,216 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:21:45,217 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:21:45,217 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:21:45,218 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:21:45,218 INFO L146 ILogger]: Start difference. First operand 320 states and 352 transitions. Second operand 19 states. [2019-05-23 11:21:45,605 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:45,605 INFO L146 ILogger]: Finished difference Result 601 states and 656 transitions. [2019-05-23 11:21:45,606 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:21:45,606 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 141 [2019-05-23 11:21:45,607 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:45,610 INFO L146 ILogger]: With dead ends: 601 [2019-05-23 11:21:45,610 INFO L146 ILogger]: Without dead ends: 582 [2019-05-23 11:21:45,611 INFO L146 ILogger]: 0 DeclaredPredicates, 158 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:21:45,611 INFO L146 ILogger]: Start minimizeSevpa. Operand 582 states. [2019-05-23 11:21:45,619 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 582 to 340. [2019-05-23 11:21:45,619 INFO L146 ILogger]: Start removeUnreachable. Operand 340 states. [2019-05-23 11:21:45,620 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 340 states to 340 states and 374 transitions. [2019-05-23 11:21:45,620 INFO L146 ILogger]: Start accepts. Automaton has 340 states and 374 transitions. Word has length 141 [2019-05-23 11:21:45,621 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:45,621 INFO L146 ILogger]: Abstraction has 340 states and 374 transitions. [2019-05-23 11:21:45,621 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:21:45,621 INFO L146 ILogger]: Start isEmpty. Operand 340 states and 374 transitions. [2019-05-23 11:21:45,622 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 150 [2019-05-23 11:21:45,622 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:45,622 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:45,622 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:45,623 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:45,623 INFO L146 ILogger]: Analyzing trace with hash 197343506, now seen corresponding path program 12 times [2019-05-23 11:21:45,623 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:45,623 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:45,624 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:45,624 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:45,624 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:45,637 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:46,024 INFO L146 ILogger]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:46,024 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:46,024 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 11:21:46,033 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:46,594 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2019-05-23 11:21:46,594 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:46,597 INFO L146 ILogger]: Trace formula consists of 225 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:21:46,599 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:46,658 INFO L146 ILogger]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:46,687 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:46,687 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-05-23 11:21:46,688 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:21:46,688 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:21:46,689 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:21:46,689 INFO L146 ILogger]: Start difference. First operand 340 states and 374 transitions. Second operand 20 states. [2019-05-23 11:21:47,172 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:47,173 INFO L146 ILogger]: Finished difference Result 635 states and 693 transitions. [2019-05-23 11:21:47,173 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:21:47,173 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 149 [2019-05-23 11:21:47,174 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:47,178 INFO L146 ILogger]: With dead ends: 635 [2019-05-23 11:21:47,178 INFO L146 ILogger]: Without dead ends: 616 [2019-05-23 11:21:47,179 INFO L146 ILogger]: 0 DeclaredPredicates, 167 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:21:47,179 INFO L146 ILogger]: Start minimizeSevpa. Operand 616 states. [2019-05-23 11:21:47,187 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 616 to 360. [2019-05-23 11:21:47,187 INFO L146 ILogger]: Start removeUnreachable. Operand 360 states. [2019-05-23 11:21:47,188 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 360 states to 360 states and 396 transitions. [2019-05-23 11:21:47,188 INFO L146 ILogger]: Start accepts. Automaton has 360 states and 396 transitions. Word has length 149 [2019-05-23 11:21:47,189 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:47,189 INFO L146 ILogger]: Abstraction has 360 states and 396 transitions. [2019-05-23 11:21:47,189 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:21:47,189 INFO L146 ILogger]: Start isEmpty. Operand 360 states and 396 transitions. [2019-05-23 11:21:47,190 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:21:47,190 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:47,191 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:47,191 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:47,191 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:47,191 INFO L146 ILogger]: Analyzing trace with hash -419913763, now seen corresponding path program 13 times [2019-05-23 11:21:47,191 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:47,191 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:47,192 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:47,192 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:47,192 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:47,205 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:47,929 INFO L146 ILogger]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:47,930 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:47,930 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:47,939 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:47,975 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:47,976 INFO L146 ILogger]: Trace formula consists of 236 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:21:47,978 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:48,042 INFO L146 ILogger]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:48,069 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:48,070 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:21:48,070 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:21:48,070 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:21:48,071 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:21:48,071 INFO L146 ILogger]: Start difference. First operand 360 states and 396 transitions. Second operand 21 states. [2019-05-23 11:21:48,390 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:48,390 INFO L146 ILogger]: Finished difference Result 669 states and 730 transitions. [2019-05-23 11:21:48,390 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:21:48,390 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 157 [2019-05-23 11:21:48,391 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:48,393 INFO L146 ILogger]: With dead ends: 669 [2019-05-23 11:21:48,393 INFO L146 ILogger]: Without dead ends: 650 [2019-05-23 11:21:48,394 INFO L146 ILogger]: 0 DeclaredPredicates, 176 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:21:48,395 INFO L146 ILogger]: Start minimizeSevpa. Operand 650 states. [2019-05-23 11:21:48,403 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 650 to 380. [2019-05-23 11:21:48,404 INFO L146 ILogger]: Start removeUnreachable. Operand 380 states. [2019-05-23 11:21:48,404 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 380 states to 380 states and 418 transitions. [2019-05-23 11:21:48,405 INFO L146 ILogger]: Start accepts. Automaton has 380 states and 418 transitions. Word has length 157 [2019-05-23 11:21:48,405 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:48,405 INFO L146 ILogger]: Abstraction has 380 states and 418 transitions. [2019-05-23 11:21:48,405 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:21:48,406 INFO L146 ILogger]: Start isEmpty. Operand 380 states and 418 transitions. [2019-05-23 11:21:48,420 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 166 [2019-05-23 11:21:48,420 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:48,420 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:48,420 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:48,421 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:48,421 INFO L146 ILogger]: Analyzing trace with hash -1817441368, now seen corresponding path program 14 times [2019-05-23 11:21:48,421 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:48,421 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:48,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:48,422 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:48,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:48,439 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:48,731 INFO L146 ILogger]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:48,731 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:48,731 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:48,742 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:48,779 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:48,780 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:48,781 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:21:48,782 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:48,830 INFO L146 ILogger]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:48,863 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:48,863 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:21:48,864 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:21:48,864 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:21:48,865 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:21:48,865 INFO L146 ILogger]: Start difference. First operand 380 states and 418 transitions. Second operand 22 states. [2019-05-23 11:21:49,294 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:49,295 INFO L146 ILogger]: Finished difference Result 703 states and 767 transitions. [2019-05-23 11:21:49,296 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:21:49,296 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 165 [2019-05-23 11:21:49,296 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:49,298 INFO L146 ILogger]: With dead ends: 703 [2019-05-23 11:21:49,299 INFO L146 ILogger]: Without dead ends: 684 [2019-05-23 11:21:49,299 INFO L146 ILogger]: 0 DeclaredPredicates, 185 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:21:49,300 INFO L146 ILogger]: Start minimizeSevpa. Operand 684 states. [2019-05-23 11:21:49,308 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 684 to 400. [2019-05-23 11:21:49,308 INFO L146 ILogger]: Start removeUnreachable. Operand 400 states. [2019-05-23 11:21:49,309 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 400 states to 400 states and 440 transitions. [2019-05-23 11:21:49,309 INFO L146 ILogger]: Start accepts. Automaton has 400 states and 440 transitions. Word has length 165 [2019-05-23 11:21:49,310 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:49,310 INFO L146 ILogger]: Abstraction has 400 states and 440 transitions. [2019-05-23 11:21:49,310 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:21:49,310 INFO L146 ILogger]: Start isEmpty. Operand 400 states and 440 transitions. [2019-05-23 11:21:49,311 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 174 [2019-05-23 11:21:49,311 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:49,311 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:49,312 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:49,312 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:49,312 INFO L146 ILogger]: Analyzing trace with hash 168328307, now seen corresponding path program 15 times [2019-05-23 11:21:49,312 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:49,312 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:49,313 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:49,313 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:49,313 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:49,326 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:49,908 INFO L146 ILogger]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:49,908 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:49,908 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:49,919 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:50,472 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2019-05-23 11:21:50,473 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:50,475 INFO L146 ILogger]: Trace formula consists of 258 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:21:50,478 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:50,517 INFO L146 ILogger]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:50,540 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:50,540 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:21:50,540 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:21:50,540 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:21:50,541 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:21:50,541 INFO L146 ILogger]: Start difference. First operand 400 states and 440 transitions. Second operand 23 states. [2019-05-23 11:21:50,884 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:50,884 INFO L146 ILogger]: Finished difference Result 737 states and 804 transitions. [2019-05-23 11:21:50,884 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:21:50,884 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 173 [2019-05-23 11:21:50,885 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:50,887 INFO L146 ILogger]: With dead ends: 737 [2019-05-23 11:21:50,888 INFO L146 ILogger]: Without dead ends: 718 [2019-05-23 11:21:50,888 INFO L146 ILogger]: 0 DeclaredPredicates, 194 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:21:50,889 INFO L146 ILogger]: Start minimizeSevpa. Operand 718 states. [2019-05-23 11:21:50,898 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 718 to 420. [2019-05-23 11:21:50,898 INFO L146 ILogger]: Start removeUnreachable. Operand 420 states. [2019-05-23 11:21:50,899 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 420 states to 420 states and 462 transitions. [2019-05-23 11:21:50,899 INFO L146 ILogger]: Start accepts. Automaton has 420 states and 462 transitions. Word has length 173 [2019-05-23 11:21:50,899 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:50,899 INFO L146 ILogger]: Abstraction has 420 states and 462 transitions. [2019-05-23 11:21:50,900 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:21:50,900 INFO L146 ILogger]: Start isEmpty. Operand 420 states and 462 transitions. [2019-05-23 11:21:50,901 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 182 [2019-05-23 11:21:50,901 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:50,901 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:50,901 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:50,902 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:50,902 INFO L146 ILogger]: Analyzing trace with hash -415698370, now seen corresponding path program 16 times [2019-05-23 11:21:50,902 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:50,902 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:50,903 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:50,903 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:50,903 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:50,916 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:51,226 INFO L146 ILogger]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:51,227 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:51,227 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:51,237 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:51,801 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:51,801 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:51,803 INFO L146 ILogger]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:21:51,806 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:51,865 INFO L146 ILogger]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:51,884 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:51,884 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-05-23 11:21:51,885 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:21:51,885 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:21:51,885 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:21:51,885 INFO L146 ILogger]: Start difference. First operand 420 states and 462 transitions. Second operand 24 states. [2019-05-23 11:21:52,204 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:52,205 INFO L146 ILogger]: Finished difference Result 771 states and 841 transitions. [2019-05-23 11:21:52,208 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:21:52,208 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 181 [2019-05-23 11:21:52,209 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:52,211 INFO L146 ILogger]: With dead ends: 771 [2019-05-23 11:21:52,211 INFO L146 ILogger]: Without dead ends: 752 [2019-05-23 11:21:52,212 INFO L146 ILogger]: 0 DeclaredPredicates, 203 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:21:52,212 INFO L146 ILogger]: Start minimizeSevpa. Operand 752 states. [2019-05-23 11:21:52,220 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 752 to 440. [2019-05-23 11:21:52,221 INFO L146 ILogger]: Start removeUnreachable. Operand 440 states. [2019-05-23 11:21:52,222 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 440 states to 440 states and 484 transitions. [2019-05-23 11:21:52,222 INFO L146 ILogger]: Start accepts. Automaton has 440 states and 484 transitions. Word has length 181 [2019-05-23 11:21:52,222 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:52,222 INFO L146 ILogger]: Abstraction has 440 states and 484 transitions. [2019-05-23 11:21:52,222 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:21:52,222 INFO L146 ILogger]: Start isEmpty. Operand 440 states and 484 transitions. [2019-05-23 11:21:52,224 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 190 [2019-05-23 11:21:52,224 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:52,224 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:52,224 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:52,224 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:52,225 INFO L146 ILogger]: Analyzing trace with hash 1835560201, now seen corresponding path program 17 times [2019-05-23 11:21:52,225 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:52,225 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:52,225 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:52,226 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:52,226 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:52,240 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:52,850 INFO L146 ILogger]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:52,850 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:52,850 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:52,860 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:53,287 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2019-05-23 11:21:53,288 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:53,291 INFO L146 ILogger]: Trace formula consists of 280 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:21:53,293 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:53,341 INFO L146 ILogger]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:53,362 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:53,363 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-05-23 11:21:53,363 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:21:53,363 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:21:53,364 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:21:53,364 INFO L146 ILogger]: Start difference. First operand 440 states and 484 transitions. Second operand 25 states. [2019-05-23 11:21:53,790 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:53,790 INFO L146 ILogger]: Finished difference Result 805 states and 878 transitions. [2019-05-23 11:21:53,790 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:21:53,791 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 189 [2019-05-23 11:21:53,791 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:53,794 INFO L146 ILogger]: With dead ends: 805 [2019-05-23 11:21:53,794 INFO L146 ILogger]: Without dead ends: 786 [2019-05-23 11:21:53,795 INFO L146 ILogger]: 0 DeclaredPredicates, 212 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:21:53,795 INFO L146 ILogger]: Start minimizeSevpa. Operand 786 states. [2019-05-23 11:21:53,803 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 786 to 460. [2019-05-23 11:21:53,804 INFO L146 ILogger]: Start removeUnreachable. Operand 460 states. [2019-05-23 11:21:53,804 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 460 states to 460 states and 506 transitions. [2019-05-23 11:21:53,805 INFO L146 ILogger]: Start accepts. Automaton has 460 states and 506 transitions. Word has length 189 [2019-05-23 11:21:53,805 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:53,805 INFO L146 ILogger]: Abstraction has 460 states and 506 transitions. [2019-05-23 11:21:53,805 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:21:53,805 INFO L146 ILogger]: Start isEmpty. Operand 460 states and 506 transitions. [2019-05-23 11:21:53,807 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 198 [2019-05-23 11:21:53,807 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:53,807 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:53,807 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:53,807 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:53,808 INFO L146 ILogger]: Analyzing trace with hash -2084442924, now seen corresponding path program 18 times [2019-05-23 11:21:53,808 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:53,808 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:53,808 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:53,808 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:53,809 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:53,823 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:54,246 INFO L146 ILogger]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:54,246 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:54,246 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:54,256 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:55,061 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2019-05-23 11:21:55,061 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:55,064 INFO L146 ILogger]: Trace formula consists of 291 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:21:55,067 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:55,216 INFO L146 ILogger]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:55,273 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:55,274 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-05-23 11:21:55,275 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:21:55,275 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:21:55,276 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:21:55,276 INFO L146 ILogger]: Start difference. First operand 460 states and 506 transitions. Second operand 26 states. [2019-05-23 11:21:56,170 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:56,170 INFO L146 ILogger]: Finished difference Result 839 states and 915 transitions. [2019-05-23 11:21:56,171 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:21:56,171 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 197 [2019-05-23 11:21:56,171 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:56,174 INFO L146 ILogger]: With dead ends: 839 [2019-05-23 11:21:56,174 INFO L146 ILogger]: Without dead ends: 820 [2019-05-23 11:21:56,174 INFO L146 ILogger]: 0 DeclaredPredicates, 221 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:21:56,175 INFO L146 ILogger]: Start minimizeSevpa. Operand 820 states. [2019-05-23 11:21:56,195 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 820 to 480. [2019-05-23 11:21:56,196 INFO L146 ILogger]: Start removeUnreachable. Operand 480 states. [2019-05-23 11:21:56,196 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 480 states to 480 states and 528 transitions. [2019-05-23 11:21:56,197 INFO L146 ILogger]: Start accepts. Automaton has 480 states and 528 transitions. Word has length 197 [2019-05-23 11:21:56,197 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:56,197 INFO L146 ILogger]: Abstraction has 480 states and 528 transitions. [2019-05-23 11:21:56,197 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:21:56,197 INFO L146 ILogger]: Start isEmpty. Operand 480 states and 528 transitions. [2019-05-23 11:21:56,199 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 206 [2019-05-23 11:21:56,199 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:56,199 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:56,199 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:56,199 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:56,200 INFO L146 ILogger]: Analyzing trace with hash -1234144865, now seen corresponding path program 19 times [2019-05-23 11:21:56,200 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:56,200 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:56,200 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:56,201 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:56,201 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:56,217 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:56,632 INFO L146 ILogger]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:56,633 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:56,633 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:56,640 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:56,685 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:56,686 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:21:56,688 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:56,771 INFO L146 ILogger]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:56,789 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:56,790 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:21:56,790 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:21:56,791 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:21:56,791 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:21:56,791 INFO L146 ILogger]: Start difference. First operand 480 states and 528 transitions. Second operand 27 states. [2019-05-23 11:21:57,237 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:57,238 INFO L146 ILogger]: Finished difference Result 873 states and 952 transitions. [2019-05-23 11:21:57,238 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:21:57,238 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 205 [2019-05-23 11:21:57,239 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:57,243 INFO L146 ILogger]: With dead ends: 873 [2019-05-23 11:21:57,243 INFO L146 ILogger]: Without dead ends: 854 [2019-05-23 11:21:57,244 INFO L146 ILogger]: 0 DeclaredPredicates, 230 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:21:57,245 INFO L146 ILogger]: Start minimizeSevpa. Operand 854 states. [2019-05-23 11:21:57,253 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 854 to 500. [2019-05-23 11:21:57,253 INFO L146 ILogger]: Start removeUnreachable. Operand 500 states. [2019-05-23 11:21:57,254 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 500 states to 500 states and 550 transitions. [2019-05-23 11:21:57,254 INFO L146 ILogger]: Start accepts. Automaton has 500 states and 550 transitions. Word has length 205 [2019-05-23 11:21:57,254 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:57,255 INFO L146 ILogger]: Abstraction has 500 states and 550 transitions. [2019-05-23 11:21:57,255 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:21:57,255 INFO L146 ILogger]: Start isEmpty. Operand 500 states and 550 transitions. [2019-05-23 11:21:57,256 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 214 [2019-05-23 11:21:57,256 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:57,257 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:57,257 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:57,257 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:57,257 INFO L146 ILogger]: Analyzing trace with hash 916388714, now seen corresponding path program 20 times [2019-05-23 11:21:57,257 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:57,257 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:57,258 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:57,258 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:57,258 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:57,273 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:58,066 INFO L146 ILogger]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:58,066 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:58,066 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:58,074 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:58,142 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:58,142 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:58,144 INFO L146 ILogger]: Trace formula consists of 313 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:21:58,146 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:58,220 INFO L146 ILogger]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:58,245 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:58,245 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2019-05-23 11:21:58,245 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:21:58,246 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:21:58,246 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:21:58,246 INFO L146 ILogger]: Start difference. First operand 500 states and 550 transitions. Second operand 28 states. [2019-05-23 11:21:58,711 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:58,712 INFO L146 ILogger]: Finished difference Result 907 states and 989 transitions. [2019-05-23 11:21:58,712 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:21:58,712 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 213 [2019-05-23 11:21:58,712 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:58,716 INFO L146 ILogger]: With dead ends: 907 [2019-05-23 11:21:58,716 INFO L146 ILogger]: Without dead ends: 888 [2019-05-23 11:21:58,717 INFO L146 ILogger]: 0 DeclaredPredicates, 239 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:21:58,717 INFO L146 ILogger]: Start minimizeSevpa. Operand 888 states. [2019-05-23 11:21:58,725 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 888 to 520. [2019-05-23 11:21:58,725 INFO L146 ILogger]: Start removeUnreachable. Operand 520 states. [2019-05-23 11:21:58,726 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 520 states to 520 states and 572 transitions. [2019-05-23 11:21:58,726 INFO L146 ILogger]: Start accepts. Automaton has 520 states and 572 transitions. Word has length 213 [2019-05-23 11:21:58,727 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:58,727 INFO L146 ILogger]: Abstraction has 520 states and 572 transitions. [2019-05-23 11:21:58,727 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:21:58,727 INFO L146 ILogger]: Start isEmpty. Operand 520 states and 572 transitions. [2019-05-23 11:21:58,729 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 222 [2019-05-23 11:21:58,729 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:58,729 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:58,729 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:58,729 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:58,729 INFO L146 ILogger]: Analyzing trace with hash -629634507, now seen corresponding path program 21 times [2019-05-23 11:21:58,730 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:58,730 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:58,730 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:58,730 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:58,731 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:58,745 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:59,480 INFO L146 ILogger]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:59,481 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:59,481 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:59,491 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:22:00,719 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2019-05-23 11:22:00,719 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:00,722 INFO L146 ILogger]: Trace formula consists of 324 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:22:00,724 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:00,781 INFO L146 ILogger]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:00,801 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:00,801 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-05-23 11:22:00,801 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:22:00,802 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:22:00,802 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:22:00,802 INFO L146 ILogger]: Start difference. First operand 520 states and 572 transitions. Second operand 29 states. [2019-05-23 11:22:01,247 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:01,248 INFO L146 ILogger]: Finished difference Result 941 states and 1026 transitions. [2019-05-23 11:22:01,248 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:22:01,248 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 221 [2019-05-23 11:22:01,249 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:01,252 INFO L146 ILogger]: With dead ends: 941 [2019-05-23 11:22:01,252 INFO L146 ILogger]: Without dead ends: 922 [2019-05-23 11:22:01,253 INFO L146 ILogger]: 0 DeclaredPredicates, 248 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:22:01,254 INFO L146 ILogger]: Start minimizeSevpa. Operand 922 states. [2019-05-23 11:22:01,262 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 922 to 540. [2019-05-23 11:22:01,262 INFO L146 ILogger]: Start removeUnreachable. Operand 540 states. [2019-05-23 11:22:01,263 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 540 states to 540 states and 594 transitions. [2019-05-23 11:22:01,263 INFO L146 ILogger]: Start accepts. Automaton has 540 states and 594 transitions. Word has length 221 [2019-05-23 11:22:01,264 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:01,264 INFO L146 ILogger]: Abstraction has 540 states and 594 transitions. [2019-05-23 11:22:01,264 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:22:01,264 INFO L146 ILogger]: Start isEmpty. Operand 540 states and 594 transitions. [2019-05-23 11:22:01,266 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 230 [2019-05-23 11:22:01,266 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:01,266 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:01,266 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:01,266 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:01,267 INFO L146 ILogger]: Analyzing trace with hash 489168384, now seen corresponding path program 22 times [2019-05-23 11:22:01,267 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:01,267 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:01,267 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:01,268 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:01,268 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:01,283 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:03,312 INFO L146 ILogger]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:03,313 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:03,313 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:22:03,323 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:22:03,609 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:22:03,609 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:03,611 INFO L146 ILogger]: Trace formula consists of 335 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:22:03,614 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:03,699 INFO L146 ILogger]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:03,717 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:03,718 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2019-05-23 11:22:03,718 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:22:03,718 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:22:03,719 INFO L146 ILogger]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:22:03,719 INFO L146 ILogger]: Start difference. First operand 540 states and 594 transitions. Second operand 30 states. [2019-05-23 11:22:05,347 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:05,348 INFO L146 ILogger]: Finished difference Result 975 states and 1063 transitions. [2019-05-23 11:22:05,348 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:22:05,348 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 229 [2019-05-23 11:22:05,349 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:05,352 INFO L146 ILogger]: With dead ends: 975 [2019-05-23 11:22:05,352 INFO L146 ILogger]: Without dead ends: 956 [2019-05-23 11:22:05,353 INFO L146 ILogger]: 0 DeclaredPredicates, 257 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:22:05,353 INFO L146 ILogger]: Start minimizeSevpa. Operand 956 states. [2019-05-23 11:22:05,361 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 956 to 560. [2019-05-23 11:22:05,361 INFO L146 ILogger]: Start removeUnreachable. Operand 560 states. [2019-05-23 11:22:05,362 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 560 states to 560 states and 616 transitions. [2019-05-23 11:22:05,363 INFO L146 ILogger]: Start accepts. Automaton has 560 states and 616 transitions. Word has length 229 [2019-05-23 11:22:05,363 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:05,363 INFO L146 ILogger]: Abstraction has 560 states and 616 transitions. [2019-05-23 11:22:05,363 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:22:05,363 INFO L146 ILogger]: Start isEmpty. Operand 560 states and 616 transitions. [2019-05-23 11:22:05,365 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 238 [2019-05-23 11:22:05,365 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:05,365 INFO L146 ILogger]: trace histogram [27, 27, 27, 27, 27, 27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:05,365 INFO L146 ILogger]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:05,366 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:05,366 INFO L146 ILogger]: Analyzing trace with hash 517519051, now seen corresponding path program 23 times [2019-05-23 11:22:05,366 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:05,366 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:05,367 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:05,367 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:05,367 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:05,386 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:06,403 INFO L146 ILogger]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:06,404 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:06,404 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:22:06,413 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:22:08,566 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2019-05-23 11:22:08,566 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:08,571 INFO L146 ILogger]: Trace formula consists of 346 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:22:08,574 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:08,682 INFO L146 ILogger]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:08,701 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:08,702 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-05-23 11:22:08,702 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:22:08,702 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:22:08,702 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:22:08,703 INFO L146 ILogger]: Start difference. First operand 560 states and 616 transitions. Second operand 31 states. [2019-05-23 11:22:09,211 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:09,211 INFO L146 ILogger]: Finished difference Result 1009 states and 1100 transitions. [2019-05-23 11:22:09,212 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:22:09,212 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 237 [2019-05-23 11:22:09,212 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:09,216 INFO L146 ILogger]: With dead ends: 1009 [2019-05-23 11:22:09,216 INFO L146 ILogger]: Without dead ends: 990 [2019-05-23 11:22:09,217 INFO L146 ILogger]: 0 DeclaredPredicates, 266 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:22:09,218 INFO L146 ILogger]: Start minimizeSevpa. Operand 990 states. [2019-05-23 11:22:09,227 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 990 to 580. [2019-05-23 11:22:09,227 INFO L146 ILogger]: Start removeUnreachable. Operand 580 states. [2019-05-23 11:22:09,228 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 580 states to 580 states and 638 transitions. [2019-05-23 11:22:09,228 INFO L146 ILogger]: Start accepts. Automaton has 580 states and 638 transitions. Word has length 237 [2019-05-23 11:22:09,229 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:09,229 INFO L146 ILogger]: Abstraction has 580 states and 638 transitions. [2019-05-23 11:22:09,229 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:22:09,229 INFO L146 ILogger]: Start isEmpty. Operand 580 states and 638 transitions. [2019-05-23 11:22:09,231 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 246 [2019-05-23 11:22:09,231 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:09,231 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:09,231 INFO L146 ILogger]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:09,231 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:09,232 INFO L146 ILogger]: Analyzing trace with hash -1531620202, now seen corresponding path program 24 times [2019-05-23 11:22:09,232 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:09,232 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:09,232 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:09,233 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:09,233 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:09,249 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:11,162 INFO L146 ILogger]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:11,162 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:11,163 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:22:11,172 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:22:28,136 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2019-05-23 11:22:28,137 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:28,149 INFO L146 ILogger]: Trace formula consists of 357 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:22:28,152 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:28,222 INFO L146 ILogger]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:28,245 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:28,246 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:22:28,246 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:22:28,246 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:22:28,247 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:22:28,247 INFO L146 ILogger]: Start difference. First operand 580 states and 638 transitions. Second operand 32 states. [2019-05-23 11:22:28,926 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:28,927 INFO L146 ILogger]: Finished difference Result 1043 states and 1137 transitions. [2019-05-23 11:22:28,927 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:22:28,927 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 245 [2019-05-23 11:22:28,928 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:28,931 INFO L146 ILogger]: With dead ends: 1043 [2019-05-23 11:22:28,931 INFO L146 ILogger]: Without dead ends: 1024 [2019-05-23 11:22:28,931 INFO L146 ILogger]: 0 DeclaredPredicates, 275 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:22:28,932 INFO L146 ILogger]: Start minimizeSevpa. Operand 1024 states. [2019-05-23 11:22:28,940 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1024 to 600. [2019-05-23 11:22:28,941 INFO L146 ILogger]: Start removeUnreachable. Operand 600 states. [2019-05-23 11:22:28,942 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 600 states to 600 states and 660 transitions. [2019-05-23 11:22:28,942 INFO L146 ILogger]: Start accepts. Automaton has 600 states and 660 transitions. Word has length 245 [2019-05-23 11:22:28,942 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:28,942 INFO L146 ILogger]: Abstraction has 600 states and 660 transitions. [2019-05-23 11:22:28,942 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:22:28,943 INFO L146 ILogger]: Start isEmpty. Operand 600 states and 660 transitions. [2019-05-23 11:22:28,944 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 254 [2019-05-23 11:22:28,944 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:28,945 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:28,945 INFO L146 ILogger]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:28,945 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:28,945 INFO L146 ILogger]: Analyzing trace with hash 417920865, now seen corresponding path program 25 times [2019-05-23 11:22:28,946 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:28,946 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:28,946 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:28,946 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:28,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:28,963 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:29,490 INFO L146 ILogger]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:29,490 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:29,490 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:22:29,500 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:29,554 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:29,555 INFO L146 ILogger]: Trace formula consists of 368 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:22:29,558 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:29,626 INFO L146 ILogger]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:29,644 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:29,644 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:22:29,645 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:22:29,645 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:22:29,645 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:22:29,646 INFO L146 ILogger]: Start difference. First operand 600 states and 660 transitions. Second operand 33 states. [2019-05-23 11:22:30,433 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:30,433 INFO L146 ILogger]: Finished difference Result 1077 states and 1174 transitions. [2019-05-23 11:22:30,433 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:22:30,433 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 253 [2019-05-23 11:22:30,434 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:30,437 INFO L146 ILogger]: With dead ends: 1077 [2019-05-23 11:22:30,438 INFO L146 ILogger]: Without dead ends: 1058 [2019-05-23 11:22:30,439 INFO L146 ILogger]: 0 DeclaredPredicates, 284 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:22:30,439 INFO L146 ILogger]: Start minimizeSevpa. Operand 1058 states. [2019-05-23 11:22:30,462 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1058 to 620. [2019-05-23 11:22:30,463 INFO L146 ILogger]: Start removeUnreachable. Operand 620 states. [2019-05-23 11:22:30,464 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 620 states to 620 states and 682 transitions. [2019-05-23 11:22:30,464 INFO L146 ILogger]: Start accepts. Automaton has 620 states and 682 transitions. Word has length 253 [2019-05-23 11:22:30,464 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:30,464 INFO L146 ILogger]: Abstraction has 620 states and 682 transitions. [2019-05-23 11:22:30,464 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:22:30,464 INFO L146 ILogger]: Start isEmpty. Operand 620 states and 682 transitions. [2019-05-23 11:22:30,466 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 262 [2019-05-23 11:22:30,466 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:30,467 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:30,467 INFO L146 ILogger]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:30,467 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:30,467 INFO L146 ILogger]: Analyzing trace with hash -1969316052, now seen corresponding path program 26 times [2019-05-23 11:22:30,467 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:30,467 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:30,468 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:30,468 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:30,468 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:30,486 INFO L146 ILogger]: Conjunction of SSA is unsat