java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_strcpy_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:10,524 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:10,526 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:10,545 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:10,545 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:10,546 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:10,548 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:10,549 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:10,551 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:10,552 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:10,553 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:10,553 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:10,554 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:10,555 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:10,557 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:10,557 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:10,558 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:10,560 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:10,562 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:10,565 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:10,566 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:10,570 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:10,574 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:10,575 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:10,575 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:10,578 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:10,578 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:10,579 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:10,579 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:10,580 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:10,583 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:10,585 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:10,586 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:10,587 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:10,588 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:10,588 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:10,589 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:10,591 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:10,591 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:10,592 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:10,617 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:10,617 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:10,619 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:10,619 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:10,620 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:10,620 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:10,620 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:10,620 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:10,620 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:10,621 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:10,621 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:10,622 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:10,622 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:10,622 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:10,622 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:10,622 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:10,623 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:10,623 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:10,623 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:10,623 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:10,623 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:10,624 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:10,626 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:10,626 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:10,626 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:10,626 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:10,626 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:10,627 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:10,627 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:20:10,678 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:10,691 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:10,695 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:10,696 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:10,697 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:10,698 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_strcpy_true-unreach-call_ground.i [2019-05-23 11:20:10,753 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e30d48d/2416ea1b765343ef880915b2830e8f9f/FLAG6f7a35c0d [2019-05-23 11:20:11,189 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:11,190 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_strcpy_true-unreach-call_ground.i [2019-05-23 11:20:11,197 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e30d48d/2416ea1b765343ef880915b2830e8f9f/FLAG6f7a35c0d [2019-05-23 11:20:11,559 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e30d48d/2416ea1b765343ef880915b2830e8f9f [2019-05-23 11:20:11,567 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:11,568 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:11,569 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:11,569 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:11,572 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:11,573 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,576 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@160dbad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11, skipping insertion in model container [2019-05-23 11:20:11,576 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,584 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:11,600 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:11,766 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:11,771 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:11,794 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:11,816 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:11,816 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11 WrapperNode [2019-05-23 11:20:11,816 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:11,817 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:11,817 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:11,818 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:11,824 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,832 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,852 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:11,853 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:11,853 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:11,853 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:11,861 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,861 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,863 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,863 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,962 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,967 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,968 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,970 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:11,971 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:11,971 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:11,971 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:11,972 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:20:12,037 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:20:12,038 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:12,038 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:12,038 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:12,038 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:12,038 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:12,487 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:12,487 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:20:12,489 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:12 BoogieIcfgContainer [2019-05-23 11:20:12,489 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:12,490 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:12,490 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:12,493 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:12,493 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:11" (1/3) ... [2019-05-23 11:20:12,494 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ca3bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:12, skipping insertion in model container [2019-05-23 11:20:12,494 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11" (2/3) ... [2019-05-23 11:20:12,495 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ca3bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:12, skipping insertion in model container [2019-05-23 11:20:12,495 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:12" (3/3) ... [2019-05-23 11:20:12,497 INFO L146 ILogger]: Analyzing ICFG standard_strcpy_true-unreach-call_ground.i [2019-05-23 11:20:12,506 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:12,515 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:12,532 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:12,565 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:12,566 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:12,567 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:12,567 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:12,567 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:12,567 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:12,567 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:12,568 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:12,568 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:12,588 INFO L146 ILogger]: Start isEmpty. Operand 50 states. [2019-05-23 11:20:12,595 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:20:12,596 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:12,596 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 11:20:12,598 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:12,604 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:12,604 INFO L146 ILogger]: Analyzing trace with hash 1628103879, now seen corresponding path program 1 times [2019-05-23 11:20:12,606 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:12,607 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:12,645 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:12,646 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:12,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:12,691 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:12,731 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:12,734 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:12,734 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:12,737 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:12,746 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:12,747 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:12,749 INFO L146 ILogger]: Start difference. First operand 50 states. Second operand 2 states. [2019-05-23 11:20:12,764 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:12,765 INFO L146 ILogger]: Finished difference Result 87 states and 99 transitions. [2019-05-23 11:20:12,765 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:12,766 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 20 [2019-05-23 11:20:12,766 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:12,775 INFO L146 ILogger]: With dead ends: 87 [2019-05-23 11:20:12,775 INFO L146 ILogger]: Without dead ends: 42 [2019-05-23 11:20:12,778 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:12,792 INFO L146 ILogger]: Start minimizeSevpa. Operand 42 states. [2019-05-23 11:20:12,812 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-05-23 11:20:12,815 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:20:12,816 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-05-23 11:20:12,820 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 20 [2019-05-23 11:20:12,821 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:12,821 INFO L146 ILogger]: Abstraction has 42 states and 45 transitions. [2019-05-23 11:20:12,821 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:12,821 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 45 transitions. [2019-05-23 11:20:12,822 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:20:12,823 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:12,824 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] [2019-05-23 11:20:12,825 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:12,825 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:12,825 INFO L146 ILogger]: Analyzing trace with hash -1732274275, now seen corresponding path program 1 times [2019-05-23 11:20:12,825 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:12,827 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:12,828 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:12,829 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:12,829 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:12,862 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:12,968 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:12,969 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:12,969 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:12,971 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:12,976 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:12,976 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:12,977 INFO L146 ILogger]: Start difference. First operand 42 states and 45 transitions. Second operand 3 states. [2019-05-23 11:20:13,084 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:13,084 INFO L146 ILogger]: Finished difference Result 76 states and 82 transitions. [2019-05-23 11:20:13,085 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:13,085 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 24 [2019-05-23 11:20:13,085 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:13,086 INFO L146 ILogger]: With dead ends: 76 [2019-05-23 11:20:13,086 INFO L146 ILogger]: Without dead ends: 47 [2019-05-23 11:20:13,087 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:13,088 INFO L146 ILogger]: Start minimizeSevpa. Operand 47 states. [2019-05-23 11:20:13,092 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-05-23 11:20:13,093 INFO L146 ILogger]: Start removeUnreachable. Operand 43 states. [2019-05-23 11:20:13,094 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2019-05-23 11:20:13,094 INFO L146 ILogger]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 24 [2019-05-23 11:20:13,094 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:13,094 INFO L146 ILogger]: Abstraction has 43 states and 46 transitions. [2019-05-23 11:20:13,095 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:13,095 INFO L146 ILogger]: Start isEmpty. Operand 43 states and 46 transitions. [2019-05-23 11:20:13,096 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:20:13,096 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:13,096 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:13,096 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:13,097 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:13,097 INFO L146 ILogger]: Analyzing trace with hash -2133678586, now seen corresponding path program 1 times [2019-05-23 11:20:13,097 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:13,097 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:13,098 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,098 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:13,099 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,118 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,253 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:13,253 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:13,254 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:20:13,254 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:20:13,254 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:20:13,255 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:20:13,255 INFO L146 ILogger]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2019-05-23 11:20:13,448 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:13,448 INFO L146 ILogger]: Finished difference Result 101 states and 108 transitions. [2019-05-23 11:20:13,450 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:13,450 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 29 [2019-05-23 11:20:13,451 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:13,452 INFO L146 ILogger]: With dead ends: 101 [2019-05-23 11:20:13,453 INFO L146 ILogger]: Without dead ends: 72 [2019-05-23 11:20:13,453 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:20:13,454 INFO L146 ILogger]: Start minimizeSevpa. Operand 72 states. [2019-05-23 11:20:13,460 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 72 to 45. [2019-05-23 11:20:13,460 INFO L146 ILogger]: Start removeUnreachable. Operand 45 states. [2019-05-23 11:20:13,461 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-05-23 11:20:13,461 INFO L146 ILogger]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 29 [2019-05-23 11:20:13,462 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:13,462 INFO L146 ILogger]: Abstraction has 45 states and 48 transitions. [2019-05-23 11:20:13,462 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:20:13,462 INFO L146 ILogger]: Start isEmpty. Operand 45 states and 48 transitions. [2019-05-23 11:20:13,463 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:20:13,464 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:13,464 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:13,464 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:13,465 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:13,465 INFO L146 ILogger]: Analyzing trace with hash -1817352663, now seen corresponding path program 1 times [2019-05-23 11:20:13,465 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:13,465 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:13,466 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,467 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:13,467 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,501 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,578 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 11:20:13,578 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:13,578 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:13,597 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:13,631 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,633 INFO L146 ILogger]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:13,638 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:13,665 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 11:20:13,687 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:13,688 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:13,689 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:13,689 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:13,690 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:13,690 INFO L146 ILogger]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2019-05-23 11:20:13,735 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:13,735 INFO L146 ILogger]: Finished difference Result 85 states and 91 transitions. [2019-05-23 11:20:13,735 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:13,736 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 31 [2019-05-23 11:20:13,736 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:13,737 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:20:13,737 INFO L146 ILogger]: Without dead ends: 54 [2019-05-23 11:20:13,738 INFO L146 ILogger]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:13,738 INFO L146 ILogger]: Start minimizeSevpa. Operand 54 states. [2019-05-23 11:20:13,742 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 54 to 50. [2019-05-23 11:20:13,742 INFO L146 ILogger]: Start removeUnreachable. Operand 50 states. [2019-05-23 11:20:13,743 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2019-05-23 11:20:13,744 INFO L146 ILogger]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 31 [2019-05-23 11:20:13,744 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:13,744 INFO L146 ILogger]: Abstraction has 50 states and 53 transitions. [2019-05-23 11:20:13,744 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:13,744 INFO L146 ILogger]: Start isEmpty. Operand 50 states and 53 transitions. [2019-05-23 11:20:13,745 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:20:13,745 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:13,746 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:13,746 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:13,746 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:13,747 INFO L146 ILogger]: Analyzing trace with hash -334889056, now seen corresponding path program 2 times [2019-05-23 11:20:13,747 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:13,747 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:13,748 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,748 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:13,748 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,764 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,924 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:13,927 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:13,927 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:13,945 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:13,987 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-05-23 11:20:13,987 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,988 INFO L146 ILogger]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:13,990 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:14,086 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:20:14,113 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:20:14,113 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-05-23 11:20:14,114 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:20:14,114 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:20:14,117 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:14,117 INFO L146 ILogger]: Start difference. First operand 50 states and 53 transitions. Second operand 7 states. [2019-05-23 11:20:14,427 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:14,427 INFO L146 ILogger]: Finished difference Result 104 states and 111 transitions. [2019-05-23 11:20:14,428 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:20:14,428 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 36 [2019-05-23 11:20:14,428 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:14,429 INFO L146 ILogger]: With dead ends: 104 [2019-05-23 11:20:14,429 INFO L146 ILogger]: Without dead ends: 68 [2019-05-23 11:20:14,430 INFO L146 ILogger]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:14,431 INFO L146 ILogger]: Start minimizeSevpa. Operand 68 states. [2019-05-23 11:20:14,435 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 68 to 58. [2019-05-23 11:20:14,436 INFO L146 ILogger]: Start removeUnreachable. Operand 58 states. [2019-05-23 11:20:14,437 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2019-05-23 11:20:14,437 INFO L146 ILogger]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 36 [2019-05-23 11:20:14,437 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:14,437 INFO L146 ILogger]: Abstraction has 58 states and 61 transitions. [2019-05-23 11:20:14,437 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:20:14,438 INFO L146 ILogger]: Start isEmpty. Operand 58 states and 61 transitions. [2019-05-23 11:20:14,440 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 51 [2019-05-23 11:20:14,441 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:14,441 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:14,441 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:14,441 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:14,442 INFO L146 ILogger]: Analyzing trace with hash -781814754, now seen corresponding path program 1 times [2019-05-23 11:20:14,444 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:14,444 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:14,445 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,446 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:14,446 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,483 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,591 INFO L146 ILogger]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:14,591 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:14,591 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:14,610 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:14,642 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,643 INFO L146 ILogger]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:14,645 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:14,780 INFO L146 ILogger]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:20:14,799 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:14,800 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2019-05-23 11:20:14,800 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:14,801 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:14,801 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:14,801 INFO L146 ILogger]: Start difference. First operand 58 states and 61 transitions. Second operand 9 states. [2019-05-23 11:20:15,435 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:15,436 INFO L146 ILogger]: Finished difference Result 136 states and 144 transitions. [2019-05-23 11:20:15,436 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:20:15,436 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 50 [2019-05-23 11:20:15,437 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:15,438 INFO L146 ILogger]: With dead ends: 136 [2019-05-23 11:20:15,438 INFO L146 ILogger]: Without dead ends: 102 [2019-05-23 11:20:15,439 INFO L146 ILogger]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:15,439 INFO L146 ILogger]: Start minimizeSevpa. Operand 102 states. [2019-05-23 11:20:15,444 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 102 to 71. [2019-05-23 11:20:15,444 INFO L146 ILogger]: Start removeUnreachable. Operand 71 states. [2019-05-23 11:20:15,445 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2019-05-23 11:20:15,446 INFO L146 ILogger]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 50 [2019-05-23 11:20:15,446 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:15,446 INFO L146 ILogger]: Abstraction has 71 states and 74 transitions. [2019-05-23 11:20:15,446 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:15,446 INFO L146 ILogger]: Start isEmpty. Operand 71 states and 74 transitions. [2019-05-23 11:20:15,447 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:20:15,447 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,448 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:15,448 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,448 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,448 INFO L146 ILogger]: Analyzing trace with hash 1012716842, now seen corresponding path program 1 times [2019-05-23 11:20:15,448 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,449 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,450 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,450 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,450 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,473 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,555 INFO L146 ILogger]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:20:15,555 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:15,556 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:15,564 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,600 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,602 INFO L146 ILogger]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:15,606 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:15,659 INFO L146 ILogger]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:20:15,686 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:15,686 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:20:15,687 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:20:15,687 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:20:15,687 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:15,687 INFO L146 ILogger]: Start difference. First operand 71 states and 74 transitions. Second operand 8 states. [2019-05-23 11:20:15,752 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:15,752 INFO L146 ILogger]: Finished difference Result 122 states and 128 transitions. [2019-05-23 11:20:15,754 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:20:15,754 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 57 [2019-05-23 11:20:15,754 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:15,755 INFO L146 ILogger]: With dead ends: 122 [2019-05-23 11:20:15,755 INFO L146 ILogger]: Without dead ends: 80 [2019-05-23 11:20:15,756 INFO L146 ILogger]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:15,756 INFO L146 ILogger]: Start minimizeSevpa. Operand 80 states. [2019-05-23 11:20:15,761 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 80 to 76. [2019-05-23 11:20:15,761 INFO L146 ILogger]: Start removeUnreachable. Operand 76 states. [2019-05-23 11:20:15,762 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2019-05-23 11:20:15,762 INFO L146 ILogger]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 57 [2019-05-23 11:20:15,762 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:15,762 INFO L146 ILogger]: Abstraction has 76 states and 79 transitions. [2019-05-23 11:20:15,763 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:20:15,763 INFO L146 ILogger]: Start isEmpty. Operand 76 states and 79 transitions. [2019-05-23 11:20:15,764 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 63 [2019-05-23 11:20:15,764 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,764 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:15,764 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,764 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,765 INFO L146 ILogger]: Analyzing trace with hash -1318389791, now seen corresponding path program 2 times [2019-05-23 11:20:15,765 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,765 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,766 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,766 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,766 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,783 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,122 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:20:16,123 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:16,123 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:16,138 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:16,184 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:16,184 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,185 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:16,188 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:16,313 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:20:16,344 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:16,344 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:20:16,345 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:16,345 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:16,346 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:16,346 INFO L146 ILogger]: Start difference. First operand 76 states and 79 transitions. Second operand 9 states. [2019-05-23 11:20:16,440 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:16,440 INFO L146 ILogger]: Finished difference Result 127 states and 133 transitions. [2019-05-23 11:20:16,443 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:16,443 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 62 [2019-05-23 11:20:16,443 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:16,444 INFO L146 ILogger]: With dead ends: 127 [2019-05-23 11:20:16,444 INFO L146 ILogger]: Without dead ends: 85 [2019-05-23 11:20:16,445 INFO L146 ILogger]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:16,446 INFO L146 ILogger]: Start minimizeSevpa. Operand 85 states. [2019-05-23 11:20:16,454 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 85 to 81. [2019-05-23 11:20:16,454 INFO L146 ILogger]: Start removeUnreachable. Operand 81 states. [2019-05-23 11:20:16,455 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2019-05-23 11:20:16,455 INFO L146 ILogger]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 62 [2019-05-23 11:20:16,455 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:16,455 INFO L146 ILogger]: Abstraction has 81 states and 84 transitions. [2019-05-23 11:20:16,456 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:16,456 INFO L146 ILogger]: Start isEmpty. Operand 81 states and 84 transitions. [2019-05-23 11:20:16,457 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:20:16,457 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:16,457 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:16,457 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:16,458 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:16,458 INFO L146 ILogger]: Analyzing trace with hash 1915285386, now seen corresponding path program 3 times [2019-05-23 11:20:16,458 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:16,458 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:16,459 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,459 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:16,460 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,475 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,045 INFO L146 ILogger]: Checked inductivity of 86 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:20:17,045 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:17,045 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:17,058 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:17,082 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:20:17,082 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,084 INFO L146 ILogger]: Trace formula consists of 75 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:20:17,088 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:17,140 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:20:17,140 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:17,154 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:17,154 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:17,155 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:20:17,198 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:17,199 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:20:17,200 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:17,209 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:17,210 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:17,210 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:20:17,337 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2019-05-23 11:20:17,337 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:17,347 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:17,348 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:17,348 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:20:17,516 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:20:17,516 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:17,520 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:17,520 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:17,521 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2019-05-23 11:20:17,639 INFO L146 ILogger]: Checked inductivity of 86 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:20:17,658 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:17,658 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-05-23 11:20:17,658 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:20:17,659 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:20:17,659 INFO L146 ILogger]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:17,659 INFO L146 ILogger]: Start difference. First operand 81 states and 84 transitions. Second operand 19 states. [2019-05-23 11:20:18,858 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:18,858 INFO L146 ILogger]: Finished difference Result 174 states and 182 transitions. [2019-05-23 11:20:18,859 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:20:18,859 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 67 [2019-05-23 11:20:18,859 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:18,860 INFO L146 ILogger]: With dead ends: 174 [2019-05-23 11:20:18,860 INFO L146 ILogger]: Without dead ends: 132 [2019-05-23 11:20:18,861 INFO L146 ILogger]: 0 DeclaredPredicates, 99 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=316, Invalid=1324, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:20:18,862 INFO L146 ILogger]: Start minimizeSevpa. Operand 132 states. [2019-05-23 11:20:18,869 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 132 to 100. [2019-05-23 11:20:18,869 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:20:18,870 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2019-05-23 11:20:18,870 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 67 [2019-05-23 11:20:18,871 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:18,871 INFO L146 ILogger]: Abstraction has 100 states and 104 transitions. [2019-05-23 11:20:18,871 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:20:18,871 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 104 transitions. [2019-05-23 11:20:18,872 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:20:18,872 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:18,873 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:18,873 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:18,873 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:18,873 INFO L146 ILogger]: Analyzing trace with hash -247109082, now seen corresponding path program 2 times [2019-05-23 11:20:18,874 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:18,874 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:18,875 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,875 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:18,875 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,893 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,031 INFO L146 ILogger]: Checked inductivity of 129 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:20:19,031 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:19,031 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:19,039 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:19,087 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:19,087 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,088 INFO L146 ILogger]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:19,091 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:19,237 INFO L146 ILogger]: Checked inductivity of 129 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:20:19,256 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:19,257 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 14 [2019-05-23 11:20:19,257 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:20:19,257 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:20:19,258 INFO L146 ILogger]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:19,260 INFO L146 ILogger]: Start difference. First operand 100 states and 104 transitions. Second operand 14 states. [2019-05-23 11:20:19,596 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:19,596 INFO L146 ILogger]: Finished difference Result 214 states and 224 transitions. [2019-05-23 11:20:19,597 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:20:19,597 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 81 [2019-05-23 11:20:19,597 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:19,599 INFO L146 ILogger]: With dead ends: 214 [2019-05-23 11:20:19,599 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:20:19,601 INFO L146 ILogger]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:20:19,601 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:20:19,606 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 113. [2019-05-23 11:20:19,607 INFO L146 ILogger]: Start removeUnreachable. Operand 113 states. [2019-05-23 11:20:19,607 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2019-05-23 11:20:19,607 INFO L146 ILogger]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 81 [2019-05-23 11:20:19,608 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:19,608 INFO L146 ILogger]: Abstraction has 113 states and 117 transitions. [2019-05-23 11:20:19,608 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:20:19,608 INFO L146 ILogger]: Start isEmpty. Operand 113 states and 117 transitions. [2019-05-23 11:20:19,609 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:20:19,610 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,610 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:19,610 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,610 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,610 INFO L146 ILogger]: Analyzing trace with hash -1892008384, now seen corresponding path program 4 times [2019-05-23 11:20:19,611 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,611 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,611 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,612 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:19,612 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,628 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,727 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:19,727 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:19,728 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:19,741 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:19,770 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:19,770 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,772 INFO L146 ILogger]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:20:19,775 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:19,811 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:19,830 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:19,830 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:20:19,830 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:20:19,831 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:20:19,831 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:20:19,831 INFO L146 ILogger]: Start difference. First operand 113 states and 117 transitions. Second operand 12 states. [2019-05-23 11:20:19,903 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:19,903 INFO L146 ILogger]: Finished difference Result 186 states and 194 transitions. [2019-05-23 11:20:19,903 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:20:19,904 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 88 [2019-05-23 11:20:19,904 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:19,905 INFO L146 ILogger]: With dead ends: 186 [2019-05-23 11:20:19,905 INFO L146 ILogger]: Without dead ends: 122 [2019-05-23 11:20:19,905 INFO L146 ILogger]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:20:19,906 INFO L146 ILogger]: Start minimizeSevpa. Operand 122 states. [2019-05-23 11:20:19,911 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 122 to 118. [2019-05-23 11:20:19,911 INFO L146 ILogger]: Start removeUnreachable. Operand 118 states. [2019-05-23 11:20:19,912 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2019-05-23 11:20:19,912 INFO L146 ILogger]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 88 [2019-05-23 11:20:19,912 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:19,913 INFO L146 ILogger]: Abstraction has 118 states and 122 transitions. [2019-05-23 11:20:19,913 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:20:19,913 INFO L146 ILogger]: Start isEmpty. Operand 118 states and 122 transitions. [2019-05-23 11:20:19,914 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:20:19,914 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,914 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:19,915 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,915 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,915 INFO L146 ILogger]: Analyzing trace with hash -1150974807, now seen corresponding path program 5 times [2019-05-23 11:20:19,915 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,915 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,916 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,916 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:19,916 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,931 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,186 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:20,186 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:20,187 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:20,198 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:20,264 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:20:20,264 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,265 INFO L146 ILogger]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,268 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,290 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:20,309 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,310 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:20:20,310 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:20:20,310 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:20:20,311 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:20,311 INFO L146 ILogger]: Start difference. First operand 118 states and 122 transitions. Second operand 13 states. [2019-05-23 11:20:20,402 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:20,402 INFO L146 ILogger]: Finished difference Result 191 states and 199 transitions. [2019-05-23 11:20:20,402 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:20:20,403 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 93 [2019-05-23 11:20:20,403 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:20,404 INFO L146 ILogger]: With dead ends: 191 [2019-05-23 11:20:20,404 INFO L146 ILogger]: Without dead ends: 127 [2019-05-23 11:20:20,405 INFO L146 ILogger]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:20,406 INFO L146 ILogger]: Start minimizeSevpa. Operand 127 states. [2019-05-23 11:20:20,410 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 127 to 123. [2019-05-23 11:20:20,411 INFO L146 ILogger]: Start removeUnreachable. Operand 123 states. [2019-05-23 11:20:20,411 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 123 states to 123 states and 127 transitions. [2019-05-23 11:20:20,412 INFO L146 ILogger]: Start accepts. Automaton has 123 states and 127 transitions. Word has length 93 [2019-05-23 11:20:20,412 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:20,412 INFO L146 ILogger]: Abstraction has 123 states and 127 transitions. [2019-05-23 11:20:20,412 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:20:20,412 INFO L146 ILogger]: Start isEmpty. Operand 123 states and 127 transitions. [2019-05-23 11:20:20,413 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:20:20,414 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:20,414 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:20,414 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:20,414 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:20,414 INFO L146 ILogger]: Analyzing trace with hash -1736255520, now seen corresponding path program 6 times [2019-05-23 11:20:20,414 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:20,415 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:20,415 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,415 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:20,416 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,430 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,170 INFO L146 ILogger]: Checked inductivity of 256 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:21,171 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:21,171 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:21,180 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:21,206 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:20:21,207 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,208 INFO L146 ILogger]: Trace formula consists of 110 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:20:21,212 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:21,230 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:20:21,230 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,298 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:21,299 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,299 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:20:21,343 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:21,343 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:20:21,344 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,358 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:21,359 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,359 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:20:21,704 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2019-05-23 11:20:21,704 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,751 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:21,751 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,752 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-05-23 11:20:21,808 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:20:21,811 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2019-05-23 11:20:21,812 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,823 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:21,824 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,824 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:22 [2019-05-23 11:20:21,942 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:20:21,943 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,946 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:21,947 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,947 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2019-05-23 11:20:22,014 INFO L146 ILogger]: Checked inductivity of 256 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2019-05-23 11:20:22,032 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:22,032 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2019-05-23 11:20:22,033 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:20:22,033 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:20:22,034 INFO L146 ILogger]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:20:22,034 INFO L146 ILogger]: Start difference. First operand 123 states and 127 transitions. Second operand 25 states. [2019-05-23 11:20:23,722 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:23,722 INFO L146 ILogger]: Finished difference Result 213 states and 222 transitions. [2019-05-23 11:20:23,722 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:20:23,723 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 98 [2019-05-23 11:20:23,723 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:23,724 INFO L146 ILogger]: With dead ends: 213 [2019-05-23 11:20:23,724 INFO L146 ILogger]: Without dead ends: 149 [2019-05-23 11:20:23,726 INFO L146 ILogger]: 0 DeclaredPredicates, 137 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=477, Invalid=2073, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:20:23,726 INFO L146 ILogger]: Start minimizeSevpa. Operand 149 states. [2019-05-23 11:20:23,730 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 149 to 124. [2019-05-23 11:20:23,731 INFO L146 ILogger]: Start removeUnreachable. Operand 124 states. [2019-05-23 11:20:23,731 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2019-05-23 11:20:23,731 INFO L146 ILogger]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 98 [2019-05-23 11:20:23,732 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:23,732 INFO L146 ILogger]: Abstraction has 124 states and 128 transitions. [2019-05-23 11:20:23,732 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:20:23,732 INFO L146 ILogger]: Start isEmpty. Operand 124 states and 128 transitions. [2019-05-23 11:20:23,733 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 105 [2019-05-23 11:20:23,733 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:23,734 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:23,734 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:23,734 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:23,734 INFO L146 ILogger]: Analyzing trace with hash 459647881, now seen corresponding path program 1 times [2019-05-23 11:20:23,734 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:23,734 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:23,735 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:23,735 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:23,736 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:23,751 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:23,948 INFO L146 ILogger]: Checked inductivity of 298 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:20:23,948 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:23,948 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:23,956 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:23,982 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:23,982 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:20:23,984 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:24,003 INFO L146 ILogger]: Checked inductivity of 298 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:20:24,022 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:24,023 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:20:24,023 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:20:24,023 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:20:24,024 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:24,024 INFO L146 ILogger]: Start difference. First operand 124 states and 128 transitions. Second operand 15 states. [2019-05-23 11:20:24,095 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:24,096 INFO L146 ILogger]: Finished difference Result 193 states and 201 transitions. [2019-05-23 11:20:24,097 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:24,097 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 104 [2019-05-23 11:20:24,097 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:24,098 INFO L146 ILogger]: With dead ends: 193 [2019-05-23 11:20:24,098 INFO L146 ILogger]: Without dead ends: 133 [2019-05-23 11:20:24,099 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:24,099 INFO L146 ILogger]: Start minimizeSevpa. Operand 133 states. [2019-05-23 11:20:24,102 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 133 to 129. [2019-05-23 11:20:24,103 INFO L146 ILogger]: Start removeUnreachable. Operand 129 states. [2019-05-23 11:20:24,103 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2019-05-23 11:20:24,103 INFO L146 ILogger]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 104 [2019-05-23 11:20:24,104 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:24,104 INFO L146 ILogger]: Abstraction has 129 states and 133 transitions. [2019-05-23 11:20:24,104 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:20:24,104 INFO L146 ILogger]: Start isEmpty. Operand 129 states and 133 transitions. [2019-05-23 11:20:24,105 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:20:24,105 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:24,105 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:24,105 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:24,105 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:24,106 INFO L146 ILogger]: Analyzing trace with hash 435224562, now seen corresponding path program 2 times [2019-05-23 11:20:24,106 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:24,106 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:24,107 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:24,107 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:24,107 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:24,125 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,311 INFO L146 ILogger]: Checked inductivity of 354 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:20:24,312 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:24,312 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:24,324 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:24,350 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:24,351 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,352 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:20:24,353 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:24,422 INFO L146 ILogger]: Checked inductivity of 354 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:20:24,450 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:24,450 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:20:24,450 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:20:24,451 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:20:24,451 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:24,451 INFO L146 ILogger]: Start difference. First operand 129 states and 133 transitions. Second operand 16 states. [2019-05-23 11:20:24,642 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:24,643 INFO L146 ILogger]: Finished difference Result 198 states and 206 transitions. [2019-05-23 11:20:24,643 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:20:24,643 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 109 [2019-05-23 11:20:24,644 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:24,644 INFO L146 ILogger]: With dead ends: 198 [2019-05-23 11:20:24,645 INFO L146 ILogger]: Without dead ends: 138 [2019-05-23 11:20:24,645 INFO L146 ILogger]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:24,645 INFO L146 ILogger]: Start minimizeSevpa. Operand 138 states. [2019-05-23 11:20:24,649 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 138 to 134. [2019-05-23 11:20:24,649 INFO L146 ILogger]: Start removeUnreachable. Operand 134 states. [2019-05-23 11:20:24,650 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2019-05-23 11:20:24,650 INFO L146 ILogger]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 109 [2019-05-23 11:20:24,650 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:24,651 INFO L146 ILogger]: Abstraction has 134 states and 138 transitions. [2019-05-23 11:20:24,651 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:20:24,651 INFO L146 ILogger]: Start isEmpty. Operand 134 states and 138 transitions. [2019-05-23 11:20:24,651 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 115 [2019-05-23 11:20:24,652 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:24,652 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:24,652 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:24,652 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:24,653 INFO L146 ILogger]: Analyzing trace with hash -2071526103, now seen corresponding path program 3 times [2019-05-23 11:20:24,653 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:24,653 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:24,653 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:24,654 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:24,654 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:24,667 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,965 INFO L146 ILogger]: Checked inductivity of 415 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:20:24,965 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:24,965 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:24,973 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:24,993 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:20:24,994 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,994 INFO L146 ILogger]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:24,996 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:25,098 INFO L146 ILogger]: Checked inductivity of 415 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2019-05-23 11:20:25,117 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:25,117 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 21 [2019-05-23 11:20:25,117 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:20:25,118 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:20:25,118 INFO L146 ILogger]: CoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:25,118 INFO L146 ILogger]: Start difference. First operand 134 states and 138 transitions. Second operand 21 states. [2019-05-23 11:20:25,795 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:25,796 INFO L146 ILogger]: Finished difference Result 220 states and 228 transitions. [2019-05-23 11:20:25,796 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:20:25,796 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 114 [2019-05-23 11:20:25,797 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:25,797 INFO L146 ILogger]: With dead ends: 220 [2019-05-23 11:20:25,797 INFO L146 ILogger]: Without dead ends: 143 [2019-05-23 11:20:25,798 INFO L146 ILogger]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=399, Invalid=933, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:20:25,798 INFO L146 ILogger]: Start minimizeSevpa. Operand 143 states. [2019-05-23 11:20:25,802 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 143 to 139. [2019-05-23 11:20:25,803 INFO L146 ILogger]: Start removeUnreachable. Operand 139 states. [2019-05-23 11:20:25,803 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2019-05-23 11:20:25,803 INFO L146 ILogger]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 114 [2019-05-23 11:20:25,803 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:25,803 INFO L146 ILogger]: Abstraction has 139 states and 142 transitions. [2019-05-23 11:20:25,804 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:20:25,804 INFO L146 ILogger]: Start isEmpty. Operand 139 states and 142 transitions. [2019-05-23 11:20:25,804 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:20:25,804 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:25,804 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:25,804 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:25,805 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:25,805 INFO L146 ILogger]: Analyzing trace with hash -508099736, now seen corresponding path program 4 times [2019-05-23 11:20:25,805 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:25,805 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:25,806 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,806 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:25,806 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,819 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,028 INFO L146 ILogger]: Checked inductivity of 497 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:20:26,029 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:26,029 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:26,038 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:26,063 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:26,063 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,064 INFO L146 ILogger]: Trace formula consists of 136 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:20:26,066 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:26,136 INFO L146 ILogger]: treesize reduction 35, result has 20.5 percent of original size [2019-05-23 11:20:26,137 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 19 treesize of output 19 [2019-05-23 11:20:26,137 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:26,148 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:26,149 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:26,149 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:20:26,336 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:26,337 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:20:26,337 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:26,339 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:26,339 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:26,339 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:20:26,406 INFO L146 ILogger]: Checked inductivity of 497 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2019-05-23 11:20:26,424 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:26,424 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2019-05-23 11:20:26,425 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:20:26,425 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:20:26,426 INFO L146 ILogger]: CoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:26,426 INFO L146 ILogger]: Start difference. First operand 139 states and 142 transitions. Second operand 31 states. [2019-05-23 11:20:27,620 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:27,620 INFO L146 ILogger]: Finished difference Result 262 states and 270 transitions. [2019-05-23 11:20:27,621 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:20:27,621 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 130 [2019-05-23 11:20:27,621 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:27,623 INFO L146 ILogger]: With dead ends: 262 [2019-05-23 11:20:27,623 INFO L146 ILogger]: Without dead ends: 202 [2019-05-23 11:20:27,625 INFO L146 ILogger]: 0 DeclaredPredicates, 175 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=562, Invalid=2978, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:20:27,626 INFO L146 ILogger]: Start minimizeSevpa. Operand 202 states. [2019-05-23 11:20:27,630 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 202 to 163. [2019-05-23 11:20:27,630 INFO L146 ILogger]: Start removeUnreachable. Operand 163 states. [2019-05-23 11:20:27,631 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 163 states to 163 states and 167 transitions. [2019-05-23 11:20:27,631 INFO L146 ILogger]: Start accepts. Automaton has 163 states and 167 transitions. Word has length 130 [2019-05-23 11:20:27,631 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:27,631 INFO L146 ILogger]: Abstraction has 163 states and 167 transitions. [2019-05-23 11:20:27,631 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:20:27,632 INFO L146 ILogger]: Start isEmpty. Operand 163 states and 167 transitions. [2019-05-23 11:20:27,632 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:20:27,632 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:27,633 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:27,633 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:27,633 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:27,633 INFO L146 ILogger]: Analyzing trace with hash 328752166, now seen corresponding path program 1 times [2019-05-23 11:20:27,633 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:27,633 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:27,634 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,634 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:27,634 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,648 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,128 INFO L146 ILogger]: Checked inductivity of 589 backedges. 3 proven. 39 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2019-05-23 11:20:28,128 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:28,128 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:28,150 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:28,196 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,198 INFO L146 ILogger]: Trace formula consists of 216 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:20:28,201 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:28,572 INFO L146 ILogger]: Checked inductivity of 589 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-05-23 11:20:28,590 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:28,591 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 18] total 23 [2019-05-23 11:20:28,591 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:20:28,591 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:20:28,592 INFO L146 ILogger]: CoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:28,592 INFO L146 ILogger]: Start difference. First operand 163 states and 167 transitions. Second operand 23 states. [2019-05-23 11:20:29,042 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:29,043 INFO L146 ILogger]: Finished difference Result 314 states and 324 transitions. [2019-05-23 11:20:29,043 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:20:29,043 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 144 [2019-05-23 11:20:29,043 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:29,044 INFO L146 ILogger]: With dead ends: 314 [2019-05-23 11:20:29,044 INFO L146 ILogger]: Without dead ends: 235 [2019-05-23 11:20:29,045 INFO L146 ILogger]: 0 DeclaredPredicates, 170 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=549, Invalid=1257, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:20:29,046 INFO L146 ILogger]: Start minimizeSevpa. Operand 235 states. [2019-05-23 11:20:29,049 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 235 to 176. [2019-05-23 11:20:29,050 INFO L146 ILogger]: Start removeUnreachable. Operand 176 states. [2019-05-23 11:20:29,050 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 176 states to 176 states and 180 transitions. [2019-05-23 11:20:29,050 INFO L146 ILogger]: Start accepts. Automaton has 176 states and 180 transitions. Word has length 144 [2019-05-23 11:20:29,051 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:29,051 INFO L146 ILogger]: Abstraction has 176 states and 180 transitions. [2019-05-23 11:20:29,051 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:20:29,051 INFO L146 ILogger]: Start isEmpty. Operand 176 states and 180 transitions. [2019-05-23 11:20:29,052 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:20:29,052 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:29,052 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:29,052 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:29,052 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:29,053 INFO L146 ILogger]: Analyzing trace with hash -1222808846, now seen corresponding path program 5 times [2019-05-23 11:20:29,053 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:29,053 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:29,054 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,054 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:29,054 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,068 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:29,326 INFO L146 ILogger]: Checked inductivity of 671 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:20:29,326 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:29,326 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:29,336 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:29,480 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2019-05-23 11:20:29,480 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:29,482 INFO L146 ILogger]: Trace formula consists of 226 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:20:29,483 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:29,520 INFO L146 ILogger]: Checked inductivity of 671 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:20:29,539 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:29,539 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-05-23 11:20:29,540 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:20:29,540 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:20:29,540 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:29,541 INFO L146 ILogger]: Start difference. First operand 176 states and 180 transitions. Second operand 20 states. [2019-05-23 11:20:29,681 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:29,681 INFO L146 ILogger]: Finished difference Result 272 states and 280 transitions. [2019-05-23 11:20:29,682 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:20:29,682 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 151 [2019-05-23 11:20:29,682 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:29,683 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:20:29,683 INFO L146 ILogger]: Without dead ends: 185 [2019-05-23 11:20:29,684 INFO L146 ILogger]: 0 DeclaredPredicates, 169 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:29,684 INFO L146 ILogger]: Start minimizeSevpa. Operand 185 states. [2019-05-23 11:20:29,688 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 185 to 181. [2019-05-23 11:20:29,689 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:20:29,690 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2019-05-23 11:20:29,690 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 151 [2019-05-23 11:20:29,690 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:29,690 INFO L146 ILogger]: Abstraction has 181 states and 185 transitions. [2019-05-23 11:20:29,690 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:20:29,690 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 185 transitions. [2019-05-23 11:20:29,691 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 157 [2019-05-23 11:20:29,692 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:29,692 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:29,692 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:29,692 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:29,693 INFO L146 ILogger]: Analyzing trace with hash 241957737, now seen corresponding path program 6 times [2019-05-23 11:20:29,693 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:29,693 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:29,694 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,694 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:29,694 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,710 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:30,019 INFO L146 ILogger]: Checked inductivity of 752 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:20:30,019 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:30,019 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:30,030 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:30,106 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:30,106 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:30,108 INFO L146 ILogger]: Trace formula consists of 156 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:20:30,111 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:30,123 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:20:30,123 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,132 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:30,133 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,133 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:20:30,167 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:30,168 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:20:30,168 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,176 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:30,177 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,177 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2019-05-23 11:20:30,294 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2019-05-23 11:20:30,294 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,303 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:30,304 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,304 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2019-05-23 11:20:30,367 INFO L146 ILogger]: treesize reduction 27, result has 25.0 percent of original size [2019-05-23 11:20:30,368 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2019-05-23 11:20:30,369 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,376 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:30,377 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,377 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:23 [2019-05-23 11:20:30,847 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2019-05-23 11:20:30,847 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,854 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:30,855 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:30,855 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2019-05-23 11:20:31,012 INFO L146 ILogger]: Checked inductivity of 752 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2019-05-23 11:20:31,031 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:31,031 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2019-05-23 11:20:31,032 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:20:31,032 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:20:31,032 INFO L146 ILogger]: CoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:20:31,033 INFO L146 ILogger]: Start difference. First operand 181 states and 185 transitions. Second operand 37 states. [2019-05-23 11:20:34,604 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:34,605 INFO L146 ILogger]: Finished difference Result 362 states and 372 transitions. [2019-05-23 11:20:34,605 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-05-23 11:20:34,605 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 156 [2019-05-23 11:20:34,606 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:34,607 INFO L146 ILogger]: With dead ends: 362 [2019-05-23 11:20:34,607 INFO L146 ILogger]: Without dead ends: 275 [2019-05-23 11:20:34,610 INFO L146 ILogger]: 0 DeclaredPredicates, 233 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2055 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1215, Invalid=7341, Unknown=0, NotChecked=0, Total=8556 [2019-05-23 11:20:34,610 INFO L146 ILogger]: Start minimizeSevpa. Operand 275 states. [2019-05-23 11:20:34,615 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 275 to 189. [2019-05-23 11:20:34,615 INFO L146 ILogger]: Start removeUnreachable. Operand 189 states. [2019-05-23 11:20:34,616 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 189 states to 189 states and 194 transitions. [2019-05-23 11:20:34,616 INFO L146 ILogger]: Start accepts. Automaton has 189 states and 194 transitions. Word has length 156 [2019-05-23 11:20:34,616 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:34,617 INFO L146 ILogger]: Abstraction has 189 states and 194 transitions. [2019-05-23 11:20:34,617 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:20:34,617 INFO L146 ILogger]: Start isEmpty. Operand 189 states and 194 transitions. [2019-05-23 11:20:34,618 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:20:34,618 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:34,618 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:34,618 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:34,618 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:34,619 INFO L146 ILogger]: Analyzing trace with hash 484516592, now seen corresponding path program 7 times [2019-05-23 11:20:34,619 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:34,619 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:34,619 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:34,620 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:34,620 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:34,633 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,865 INFO L146 ILogger]: Checked inductivity of 830 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-05-23 11:20:34,866 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:34,866 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:34,874 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:34,907 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,908 INFO L146 ILogger]: Trace formula consists of 244 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:20:34,910 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:34,957 INFO L146 ILogger]: Checked inductivity of 830 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-05-23 11:20:34,975 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:34,976 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:20:34,976 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:20:34,976 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:20:34,977 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:34,977 INFO L146 ILogger]: Start difference. First operand 189 states and 194 transitions. Second operand 22 states. [2019-05-23 11:20:35,076 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:35,077 INFO L146 ILogger]: Finished difference Result 288 states and 298 transitions. [2019-05-23 11:20:35,077 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:20:35,077 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 162 [2019-05-23 11:20:35,078 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:35,079 INFO L146 ILogger]: With dead ends: 288 [2019-05-23 11:20:35,079 INFO L146 ILogger]: Without dead ends: 198 [2019-05-23 11:20:35,080 INFO L146 ILogger]: 0 DeclaredPredicates, 182 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:35,080 INFO L146 ILogger]: Start minimizeSevpa. Operand 198 states. [2019-05-23 11:20:35,085 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 198 to 194. [2019-05-23 11:20:35,085 INFO L146 ILogger]: Start removeUnreachable. Operand 194 states. [2019-05-23 11:20:35,086 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 194 states to 194 states and 199 transitions. [2019-05-23 11:20:35,086 INFO L146 ILogger]: Start accepts. Automaton has 194 states and 199 transitions. Word has length 162 [2019-05-23 11:20:35,086 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:35,086 INFO L146 ILogger]: Abstraction has 194 states and 199 transitions. [2019-05-23 11:20:35,087 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:20:35,087 INFO L146 ILogger]: Start isEmpty. Operand 194 states and 199 transitions. [2019-05-23 11:20:35,087 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:20:35,088 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:35,088 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:35,088 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:35,088 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:35,088 INFO L146 ILogger]: Analyzing trace with hash 1231843865, now seen corresponding path program 8 times [2019-05-23 11:20:35,088 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:35,089 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:35,089 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:35,089 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:35,089 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:35,104 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:35,379 INFO L146 ILogger]: Checked inductivity of 921 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-05-23 11:20:35,379 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:35,379 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:35,389 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:35,426 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:35,426 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:35,427 INFO L146 ILogger]: Trace formula consists of 251 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:20:35,428 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:35,470 INFO L146 ILogger]: Checked inductivity of 921 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-05-23 11:20:35,492 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:35,492 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:20:35,492 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:20:35,493 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:20:35,493 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:35,493 INFO L146 ILogger]: Start difference. First operand 194 states and 199 transitions. Second operand 23 states. [2019-05-23 11:20:35,620 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:35,620 INFO L146 ILogger]: Finished difference Result 293 states and 303 transitions. [2019-05-23 11:20:35,621 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:20:35,621 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 167 [2019-05-23 11:20:35,621 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:35,622 INFO L146 ILogger]: With dead ends: 293 [2019-05-23 11:20:35,622 INFO L146 ILogger]: Without dead ends: 203 [2019-05-23 11:20:35,623 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:35,623 INFO L146 ILogger]: Start minimizeSevpa. Operand 203 states. [2019-05-23 11:20:35,628 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 203 to 199. [2019-05-23 11:20:35,628 INFO L146 ILogger]: Start removeUnreachable. Operand 199 states. [2019-05-23 11:20:35,629 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 199 states to 199 states and 204 transitions. [2019-05-23 11:20:35,629 INFO L146 ILogger]: Start accepts. Automaton has 199 states and 204 transitions. Word has length 167 [2019-05-23 11:20:35,629 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:35,629 INFO L146 ILogger]: Abstraction has 199 states and 204 transitions. [2019-05-23 11:20:35,629 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:20:35,629 INFO L146 ILogger]: Start isEmpty. Operand 199 states and 204 transitions. [2019-05-23 11:20:35,630 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 173 [2019-05-23 11:20:35,630 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:35,631 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:35,631 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:35,631 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:35,631 INFO L146 ILogger]: Analyzing trace with hash 1351693456, now seen corresponding path program 9 times [2019-05-23 11:20:35,631 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:35,631 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:35,632 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:35,632 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:35,632 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:35,650 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:36,027 INFO L146 ILogger]: Checked inductivity of 1017 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-05-23 11:20:36,027 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:36,027 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:36,035 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:36,063 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:20:36,063 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:36,064 INFO L146 ILogger]: Trace formula consists of 132 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:36,067 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:36,233 INFO L146 ILogger]: Checked inductivity of 1017 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2019-05-23 11:20:36,252 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:36,253 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 10] total 31 [2019-05-23 11:20:36,253 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:20:36,253 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:20:36,254 INFO L146 ILogger]: CoverageRelationStatistics Valid=281, Invalid=649, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:36,254 INFO L146 ILogger]: Start difference. First operand 199 states and 204 transitions. Second operand 31 states. [2019-05-23 11:20:37,011 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:37,012 INFO L146 ILogger]: Finished difference Result 327 states and 337 transitions. [2019-05-23 11:20:37,012 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:20:37,012 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 172 [2019-05-23 11:20:37,012 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:37,013 INFO L146 ILogger]: With dead ends: 327 [2019-05-23 11:20:37,013 INFO L146 ILogger]: Without dead ends: 208 [2019-05-23 11:20:37,014 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=859, Invalid=2221, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:20:37,015 INFO L146 ILogger]: Start minimizeSevpa. Operand 208 states. [2019-05-23 11:20:37,019 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 208 to 204. [2019-05-23 11:20:37,020 INFO L146 ILogger]: Start removeUnreachable. Operand 204 states. [2019-05-23 11:20:37,020 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 204 states to 204 states and 208 transitions. [2019-05-23 11:20:37,021 INFO L146 ILogger]: Start accepts. Automaton has 204 states and 208 transitions. Word has length 172 [2019-05-23 11:20:37,021 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:37,021 INFO L146 ILogger]: Abstraction has 204 states and 208 transitions. [2019-05-23 11:20:37,021 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:20:37,021 INFO L146 ILogger]: Start isEmpty. Operand 204 states and 208 transitions. [2019-05-23 11:20:37,022 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 186 [2019-05-23 11:20:37,022 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:37,022 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:37,023 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:37,023 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:37,023 INFO L146 ILogger]: Analyzing trace with hash -421124338, now seen corresponding path program 2 times [2019-05-23 11:20:37,023 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:37,023 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:37,024 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,024 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:37,024 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,040 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,217 INFO L146 ILogger]: Checked inductivity of 1156 backedges. 4 proven. 74 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2019-05-23 11:20:37,218 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:37,218 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:37,226 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:37,269 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:37,270 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,271 INFO L146 ILogger]: Trace formula consists of 272 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:20:37,273 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:37,589 INFO L146 ILogger]: Checked inductivity of 1156 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:20:37,608 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:37,608 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 24] total 30 [2019-05-23 11:20:37,608 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:20:37,609 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:20:37,609 INFO L146 ILogger]: CoverageRelationStatistics Valid=298, Invalid=572, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:20:37,609 INFO L146 ILogger]: Start difference. First operand 204 states and 208 transitions. Second operand 30 states. [2019-05-23 11:20:38,211 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:38,211 INFO L146 ILogger]: Finished difference Result 366 states and 376 transitions. [2019-05-23 11:20:38,212 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:20:38,212 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 185 [2019-05-23 11:20:38,212 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:38,214 INFO L146 ILogger]: With dead ends: 366 [2019-05-23 11:20:38,214 INFO L146 ILogger]: Without dead ends: 276 [2019-05-23 11:20:38,216 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=976, Invalid=2216, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:20:38,216 INFO L146 ILogger]: Start minimizeSevpa. Operand 276 states. [2019-05-23 11:20:38,221 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 276 to 217. [2019-05-23 11:20:38,222 INFO L146 ILogger]: Start removeUnreachable. Operand 217 states. [2019-05-23 11:20:38,222 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 217 states to 217 states and 221 transitions. [2019-05-23 11:20:38,223 INFO L146 ILogger]: Start accepts. Automaton has 217 states and 221 transitions. Word has length 185 [2019-05-23 11:20:38,223 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:38,223 INFO L146 ILogger]: Abstraction has 217 states and 221 transitions. [2019-05-23 11:20:38,223 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:20:38,223 INFO L146 ILogger]: Start isEmpty. Operand 217 states and 221 transitions. [2019-05-23 11:20:38,224 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 193 [2019-05-23 11:20:38,224 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:38,225 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:38,225 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:38,225 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:38,225 INFO L146 ILogger]: Analyzing trace with hash -1619706968, now seen corresponding path program 10 times [2019-05-23 11:20:38,225 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:38,226 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:38,227 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,227 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:38,227 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,250 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:38,879 INFO L146 ILogger]: Checked inductivity of 1270 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:20:38,879 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:38,879 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:38,888 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:39,067 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:39,067 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,070 INFO L146 ILogger]: Trace formula consists of 282 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:20:39,072 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:39,201 INFO L146 ILogger]: Checked inductivity of 1270 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:20:39,232 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:39,232 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-05-23 11:20:39,233 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:20:39,233 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:20:39,233 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:39,234 INFO L146 ILogger]: Start difference. First operand 217 states and 221 transitions. Second operand 26 states. [2019-05-23 11:20:40,284 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:40,285 INFO L146 ILogger]: Finished difference Result 324 states and 332 transitions. [2019-05-23 11:20:40,288 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:20:40,288 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 192 [2019-05-23 11:20:40,288 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:40,289 INFO L146 ILogger]: With dead ends: 324 [2019-05-23 11:20:40,290 INFO L146 ILogger]: Without dead ends: 226 [2019-05-23 11:20:40,290 INFO L146 ILogger]: 0 DeclaredPredicates, 216 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:40,291 INFO L146 ILogger]: Start minimizeSevpa. Operand 226 states. [2019-05-23 11:20:40,295 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 226 to 222. [2019-05-23 11:20:40,296 INFO L146 ILogger]: Start removeUnreachable. Operand 222 states. [2019-05-23 11:20:40,297 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 222 states to 222 states and 226 transitions. [2019-05-23 11:20:40,297 INFO L146 ILogger]: Start accepts. Automaton has 222 states and 226 transitions. Word has length 192 [2019-05-23 11:20:40,297 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:40,297 INFO L146 ILogger]: Abstraction has 222 states and 226 transitions. [2019-05-23 11:20:40,297 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:20:40,297 INFO L146 ILogger]: Start isEmpty. Operand 222 states and 226 transitions. [2019-05-23 11:20:40,298 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 198 [2019-05-23 11:20:40,298 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:40,299 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:40,299 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:40,299 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:40,299 INFO L146 ILogger]: Analyzing trace with hash -1244373743, now seen corresponding path program 11 times [2019-05-23 11:20:40,299 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:40,299 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:40,300 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:40,300 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:40,300 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:40,317 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:40,786 INFO L146 ILogger]: Checked inductivity of 1381 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:20:40,787 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:40,787 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:40,796 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:41,592 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-05-23 11:20:41,592 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:41,596 INFO L146 ILogger]: Trace formula consists of 289 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:20:41,598 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:41,696 INFO L146 ILogger]: Checked inductivity of 1381 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:20:41,722 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:41,722 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:20:41,723 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:20:41,723 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:20:41,724 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:20:41,724 INFO L146 ILogger]: Start difference. First operand 222 states and 226 transitions. Second operand 27 states. [2019-05-23 11:20:41,862 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:41,862 INFO L146 ILogger]: Finished difference Result 329 states and 337 transitions. [2019-05-23 11:20:41,863 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:20:41,863 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 197 [2019-05-23 11:20:41,863 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:41,864 INFO L146 ILogger]: With dead ends: 329 [2019-05-23 11:20:41,864 INFO L146 ILogger]: Without dead ends: 231 [2019-05-23 11:20:41,865 INFO L146 ILogger]: 0 DeclaredPredicates, 222 GetRequests, 197 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 11:20:41,865 INFO L146 ILogger]: Start minimizeSevpa. Operand 231 states. [2019-05-23 11:20:41,870 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 231 to 227. [2019-05-23 11:20:41,870 INFO L146 ILogger]: Start removeUnreachable. Operand 227 states. [2019-05-23 11:20:41,871 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2019-05-23 11:20:41,871 INFO L146 ILogger]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 197 [2019-05-23 11:20:41,871 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:41,871 INFO L146 ILogger]: Abstraction has 227 states and 231 transitions. [2019-05-23 11:20:41,871 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:20:41,872 INFO L146 ILogger]: Start isEmpty. Operand 227 states and 231 transitions. [2019-05-23 11:20:41,872 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 203 [2019-05-23 11:20:41,873 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:41,873 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:41,873 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:41,873 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:41,873 INFO L146 ILogger]: Analyzing trace with hash -974211768, now seen corresponding path program 12 times [2019-05-23 11:20:41,874 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:41,874 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:41,874 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:41,875 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:41,875 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:41,893 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:42,295 INFO L146 ILogger]: Checked inductivity of 1497 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:20:42,295 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:42,295 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:42,306 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:42,470 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:20:42,470 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:42,472 INFO L146 ILogger]: Trace formula consists of 184 conjuncts, 41 conjunts are in the unsatisfiable core [2019-05-23 11:20:42,476 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:42,490 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:20:42,491 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:42,497 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:42,498 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:42,498 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:20:42,528 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:42,528 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:20:42,529 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:42,534 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:42,534 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:42,534 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:20:42,772 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2019-05-23 11:20:42,772 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:42,782 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:42,782 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:42,783 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-05-23 11:20:42,871 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:20:42,872 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2019-05-23 11:20:42,873 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:42,884 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:42,885 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:42,885 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:29 [2019-05-23 11:20:42,929 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:20:42,931 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2019-05-23 11:20:42,931 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:42,943 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:42,944 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:42,944 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:26 [2019-05-23 11:20:43,271 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:20:43,272 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:43,280 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:43,281 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:43,281 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2019-05-23 11:20:43,457 INFO L146 ILogger]: Checked inductivity of 1497 backedges. 9 proven. 84 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2019-05-23 11:20:43,477 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:43,477 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20] total 45 [2019-05-23 11:20:43,477 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:20:43,478 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:20:43,478 INFO L146 ILogger]: CoverageRelationStatistics Valid=412, Invalid=1568, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:20:43,479 INFO L146 ILogger]: Start difference. First operand 227 states and 231 transitions. Second operand 45 states. [2019-05-23 11:20:46,681 WARN L146 ILogger]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2019-05-23 11:20:47,829 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:47,830 INFO L146 ILogger]: Finished difference Result 363 states and 372 transitions. [2019-05-23 11:20:47,830 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:20:47,830 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 202 [2019-05-23 11:20:47,831 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:47,832 INFO L146 ILogger]: With dead ends: 363 [2019-05-23 11:20:47,832 INFO L146 ILogger]: Without dead ends: 265 [2019-05-23 11:20:47,835 INFO L146 ILogger]: 0 DeclaredPredicates, 277 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1506, Invalid=7050, Unknown=0, NotChecked=0, Total=8556 [2019-05-23 11:20:47,836 INFO L146 ILogger]: Start minimizeSevpa. Operand 265 states. [2019-05-23 11:20:47,840 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 265 to 228. [2019-05-23 11:20:47,841 INFO L146 ILogger]: Start removeUnreachable. Operand 228 states. [2019-05-23 11:20:47,841 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 228 states to 228 states and 232 transitions. [2019-05-23 11:20:47,841 INFO L146 ILogger]: Start accepts. Automaton has 228 states and 232 transitions. Word has length 202 [2019-05-23 11:20:47,842 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:47,842 INFO L146 ILogger]: Abstraction has 228 states and 232 transitions. [2019-05-23 11:20:47,842 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:20:47,842 INFO L146 ILogger]: Start isEmpty. Operand 228 states and 232 transitions. [2019-05-23 11:20:47,843 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:20:47,843 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:47,843 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:47,843 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:47,843 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:47,844 INFO L146 ILogger]: Analyzing trace with hash -1359176527, now seen corresponding path program 13 times [2019-05-23 11:20:47,844 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:47,844 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:47,845 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:47,845 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:47,845 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:47,862 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:48,401 INFO L146 ILogger]: Checked inductivity of 1599 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-05-23 11:20:48,402 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:48,402 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 11:20:48,411 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:48,459 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:48,460 INFO L146 ILogger]: Trace formula consists of 307 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:20:48,462 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:48,516 INFO L146 ILogger]: Checked inductivity of 1599 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-05-23 11:20:48,544 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:48,544 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-05-23 11:20:48,545 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:20:48,545 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:20:48,546 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:20:48,546 INFO L146 ILogger]: Start difference. First operand 228 states and 232 transitions. Second operand 29 states. [2019-05-23 11:20:48,764 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:48,764 INFO L146 ILogger]: Finished difference Result 331 states and 339 transitions. [2019-05-23 11:20:48,764 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:20:48,764 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 208 [2019-05-23 11:20:48,765 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:48,766 INFO L146 ILogger]: With dead ends: 331 [2019-05-23 11:20:48,766 INFO L146 ILogger]: Without dead ends: 237 [2019-05-23 11:20:48,766 INFO L146 ILogger]: 0 DeclaredPredicates, 235 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:20:48,767 INFO L146 ILogger]: Start minimizeSevpa. Operand 237 states. [2019-05-23 11:20:48,771 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 237 to 233. [2019-05-23 11:20:48,772 INFO L146 ILogger]: Start removeUnreachable. Operand 233 states. [2019-05-23 11:20:48,772 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 233 states to 233 states and 237 transitions. [2019-05-23 11:20:48,772 INFO L146 ILogger]: Start accepts. Automaton has 233 states and 237 transitions. Word has length 208 [2019-05-23 11:20:48,772 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:48,773 INFO L146 ILogger]: Abstraction has 233 states and 237 transitions. [2019-05-23 11:20:48,773 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:20:48,773 INFO L146 ILogger]: Start isEmpty. Operand 233 states and 237 transitions. [2019-05-23 11:20:48,774 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 214 [2019-05-23 11:20:48,774 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:48,774 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:48,774 INFO L146 ILogger]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:48,775 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:48,775 INFO L146 ILogger]: Analyzing trace with hash 581291034, now seen corresponding path program 14 times [2019-05-23 11:20:48,775 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:48,775 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:48,776 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:48,776 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:48,776 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:48,794 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:49,579 INFO L146 ILogger]: Checked inductivity of 1725 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-05-23 11:20:49,579 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:49,579 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 11:20:49,588 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:49,656 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:49,656 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:49,658 INFO L146 ILogger]: Trace formula consists of 314 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:20:49,660 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:49,714 INFO L146 ILogger]: Checked inductivity of 1725 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-05-23 11:20:49,732 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:49,733 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2019-05-23 11:20:49,733 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:20:49,733 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:20:49,734 INFO L146 ILogger]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:20:49,734 INFO L146 ILogger]: Start difference. First operand 233 states and 237 transitions. Second operand 30 states. [2019-05-23 11:20:49,881 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:49,881 INFO L146 ILogger]: Finished difference Result 336 states and 344 transitions. [2019-05-23 11:20:49,882 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:20:49,882 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 213 [2019-05-23 11:20:49,882 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:49,883 INFO L146 ILogger]: With dead ends: 336 [2019-05-23 11:20:49,883 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:20:49,884 INFO L146 ILogger]: 0 DeclaredPredicates, 241 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:20:49,884 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:20:49,889 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 238. [2019-05-23 11:20:49,889 INFO L146 ILogger]: Start removeUnreachable. Operand 238 states. [2019-05-23 11:20:49,890 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 238 states to 238 states and 242 transitions. [2019-05-23 11:20:49,890 INFO L146 ILogger]: Start accepts. Automaton has 238 states and 242 transitions. Word has length 213 [2019-05-23 11:20:49,890 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:49,890 INFO L146 ILogger]: Abstraction has 238 states and 242 transitions. [2019-05-23 11:20:49,890 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:20:49,890 INFO L146 ILogger]: Start isEmpty. Operand 238 states and 242 transitions. [2019-05-23 11:20:49,891 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 219 [2019-05-23 11:20:49,892 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:49,892 INFO L146 ILogger]: trace histogram [27, 27, 27, 27, 27, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:49,892 INFO L146 ILogger]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:49,892 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:49,893 INFO L146 ILogger]: Analyzing trace with hash 2005849681, now seen corresponding path program 15 times [2019-05-23 11:20:49,893 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:49,893 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:49,894 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,894 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:49,894 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,912 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:51,466 INFO L146 ILogger]: Checked inductivity of 1856 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-05-23 11:20:51,467 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:51,467 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 11:20:51,476 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:51,511 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:20:51,511 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:51,513 INFO L146 ILogger]: Trace formula consists of 153 conjuncts, 43 conjunts are in the unsatisfiable core [2019-05-23 11:20:51,518 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:51,566 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:20:51,566 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:51,631 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:51,632 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:51,632 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:20:51,676 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:51,677 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:20:51,677 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:51,682 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:51,682 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:51,683 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:20:51,846 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2019-05-23 11:20:51,847 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:51,894 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:51,895 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:51,895 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-05-23 11:20:52,502 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:20:52,503 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:52,505 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:52,506 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:52,506 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2019-05-23 11:20:52,713 INFO L146 ILogger]: Checked inductivity of 1856 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 1782 trivial. 0 not checked. [2019-05-23 11:20:52,732 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:52,732 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 22] total 50 [2019-05-23 11:20:52,733 INFO L146 ILogger]: Interpolant automaton has 50 states [2019-05-23 11:20:52,733 INFO L146 ILogger]: Constructing interpolant automaton starting with 50 interpolants. [2019-05-23 11:20:52,734 INFO L146 ILogger]: CoverageRelationStatistics Valid=502, Invalid=1948, Unknown=0, NotChecked=0, Total=2450 [2019-05-23 11:20:52,734 INFO L146 ILogger]: Start difference. First operand 238 states and 242 transitions. Second operand 50 states. [2019-05-23 11:20:56,648 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:56,648 INFO L146 ILogger]: Finished difference Result 400 states and 409 transitions. [2019-05-23 11:20:56,648 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:20:56,648 INFO L146 ILogger]: Start accepts. Automaton has 50 states. Word has length 218 [2019-05-23 11:20:56,649 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:56,650 INFO L146 ILogger]: With dead ends: 400 [2019-05-23 11:20:56,650 INFO L146 ILogger]: Without dead ends: 306 [2019-05-23 11:20:56,654 INFO L146 ILogger]: 0 DeclaredPredicates, 303 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1765, Invalid=8947, Unknown=0, NotChecked=0, Total=10712 [2019-05-23 11:20:56,655 INFO L146 ILogger]: Start minimizeSevpa. Operand 306 states. [2019-05-23 11:20:56,660 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 306 to 259. [2019-05-23 11:20:56,661 INFO L146 ILogger]: Start removeUnreachable. Operand 259 states. [2019-05-23 11:20:56,661 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 259 states to 259 states and 263 transitions. [2019-05-23 11:20:56,662 INFO L146 ILogger]: Start accepts. Automaton has 259 states and 263 transitions. Word has length 218 [2019-05-23 11:20:56,662 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:56,662 INFO L146 ILogger]: Abstraction has 259 states and 263 transitions. [2019-05-23 11:20:56,662 INFO L146 ILogger]: Interpolant automaton has 50 states. [2019-05-23 11:20:56,662 INFO L146 ILogger]: Start isEmpty. Operand 259 states and 263 transitions. [2019-05-23 11:20:56,663 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 235 [2019-05-23 11:20:56,663 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:56,664 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:56,664 INFO L146 ILogger]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:56,664 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:56,664 INFO L146 ILogger]: Analyzing trace with hash -378288944, now seen corresponding path program 16 times [2019-05-23 11:20:56,665 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:56,665 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:56,665 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:56,665 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:56,666 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:56,686 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:57,671 INFO L146 ILogger]: Checked inductivity of 2030 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:20:57,671 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:57,671 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 11:20:57,680 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:58,142 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:58,142 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:58,146 INFO L146 ILogger]: Trace formula consists of 342 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:20:58,148 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:58,232 INFO L146 ILogger]: Checked inductivity of 2030 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:20:58,252 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:58,253 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:20:58,253 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:20:58,253 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:20:58,253 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:20:58,254 INFO L146 ILogger]: Start difference. First operand 259 states and 263 transitions. Second operand 32 states. [2019-05-23 11:20:58,426 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:58,426 INFO L146 ILogger]: Finished difference Result 378 states and 386 transitions. [2019-05-23 11:20:58,426 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:20:58,427 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 234 [2019-05-23 11:20:58,428 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:58,429 INFO L146 ILogger]: With dead ends: 378 [2019-05-23 11:20:58,429 INFO L146 ILogger]: Without dead ends: 268 [2019-05-23 11:20:58,430 INFO L146 ILogger]: 0 DeclaredPredicates, 264 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:20:58,431 INFO L146 ILogger]: Start minimizeSevpa. Operand 268 states. [2019-05-23 11:20:58,436 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 268 to 264. [2019-05-23 11:20:58,437 INFO L146 ILogger]: Start removeUnreachable. Operand 264 states. [2019-05-23 11:20:58,437 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 264 states to 264 states and 268 transitions. [2019-05-23 11:20:58,437 INFO L146 ILogger]: Start accepts. Automaton has 264 states and 268 transitions. Word has length 234 [2019-05-23 11:20:58,437 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:58,437 INFO L146 ILogger]: Abstraction has 264 states and 268 transitions. [2019-05-23 11:20:58,438 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:20:58,438 INFO L146 ILogger]: Start isEmpty. Operand 264 states and 268 transitions. [2019-05-23 11:20:58,438 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 240 [2019-05-23 11:20:58,438 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:58,439 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:58,439 INFO L146 ILogger]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:58,439 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:58,439 INFO L146 ILogger]: Analyzing trace with hash 271586041, now seen corresponding path program 17 times [2019-05-23 11:20:58,439 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:58,440 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:58,440 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:58,440 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:58,441 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:58,462 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:59,177 INFO L146 ILogger]: Checked inductivity of 2171 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:20:59,178 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:59,178 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 11:20:59,186 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:05,392 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-05-23 11:21:05,392 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:05,402 INFO L146 ILogger]: Trace formula consists of 349 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:21:05,405 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:05,467 INFO L146 ILogger]: Checked inductivity of 2171 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:21:05,489 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:05,489 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:21:05,489 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:21:05,490 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:21:05,490 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:21:05,490 INFO L146 ILogger]: Start difference. First operand 264 states and 268 transitions. Second operand 33 states. [2019-05-23 11:21:05,679 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:05,680 INFO L146 ILogger]: Finished difference Result 383 states and 391 transitions. [2019-05-23 11:21:05,681 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:21:05,681 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 239 [2019-05-23 11:21:05,682 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:05,683 INFO L146 ILogger]: With dead ends: 383 [2019-05-23 11:21:05,683 INFO L146 ILogger]: Without dead ends: 273 [2019-05-23 11:21:05,684 INFO L146 ILogger]: 0 DeclaredPredicates, 270 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:21:05,684 INFO L146 ILogger]: Start minimizeSevpa. Operand 273 states. [2019-05-23 11:21:05,689 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 273 to 269. [2019-05-23 11:21:05,690 INFO L146 ILogger]: Start removeUnreachable. Operand 269 states. [2019-05-23 11:21:05,690 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 269 states to 269 states and 273 transitions. [2019-05-23 11:21:05,691 INFO L146 ILogger]: Start accepts. Automaton has 269 states and 273 transitions. Word has length 239 [2019-05-23 11:21:05,691 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:05,691 INFO L146 ILogger]: Abstraction has 269 states and 273 transitions. [2019-05-23 11:21:05,691 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:21:05,691 INFO L146 ILogger]: Start isEmpty. Operand 269 states and 273 transitions. [2019-05-23 11:21:05,692 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 245 [2019-05-23 11:21:05,693 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:05,693 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:05,693 INFO L146 ILogger]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:05,693 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:05,693 INFO L146 ILogger]: Analyzing trace with hash 518731376, now seen corresponding path program 18 times [2019-05-23 11:21:05,694 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:05,694 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:05,694 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:05,694 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:05,695 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:05,714 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:07,120 INFO L146 ILogger]: Checked inductivity of 2317 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-05-23 11:21:07,120 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:07,121 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:07,129 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:07,277 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:21:07,278 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:07,280 INFO L146 ILogger]: Trace formula consists of 202 conjuncts, 41 conjunts are in the unsatisfiable core [2019-05-23 11:21:07,282 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:07,286 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:21:07,286 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:07,293 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:07,293 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:07,293 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:21:07,332 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:07,332 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:21:07,333 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:07,336 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:07,336 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:07,336 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2019-05-23 11:21:07,466 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2019-05-23 11:21:07,467 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:07,473 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:07,474 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:07,474 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2019-05-23 11:21:07,557 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:07,558 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 63 [2019-05-23 11:21:07,559 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:07,586 INFO L146 ILogger]: treesize reduction 30, result has 55.2 percent of original size [2019-05-23 11:21:07,587 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 11:21:07,587 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:23 [2019-05-23 11:21:07,949 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2019-05-23 11:21:07,949 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:07,952 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:07,953 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:07,953 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2019-05-23 11:21:08,164 INFO L146 ILogger]: Checked inductivity of 2317 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2019-05-23 11:21:08,183 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:08,183 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 22] total 53 [2019-05-23 11:21:08,184 INFO L146 ILogger]: Interpolant automaton has 53 states [2019-05-23 11:21:08,184 INFO L146 ILogger]: Constructing interpolant automaton starting with 53 interpolants. [2019-05-23 11:21:08,184 INFO L146 ILogger]: CoverageRelationStatistics Valid=595, Invalid=2161, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:21:08,185 INFO L146 ILogger]: Start difference. First operand 269 states and 273 transitions. Second operand 53 states. [2019-05-23 11:21:11,129 WARN L146 ILogger]: Spent 172.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2019-05-23 11:21:12,241 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:12,241 INFO L146 ILogger]: Finished difference Result 429 states and 438 transitions. [2019-05-23 11:21:12,242 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:21:12,242 INFO L146 ILogger]: Start accepts. Automaton has 53 states. Word has length 244 [2019-05-23 11:21:12,242 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:12,244 INFO L146 ILogger]: With dead ends: 429 [2019-05-23 11:21:12,244 INFO L146 ILogger]: Without dead ends: 319 [2019-05-23 11:21:12,246 INFO L146 ILogger]: 0 DeclaredPredicates, 334 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2065, Invalid=9925, Unknown=0, NotChecked=0, Total=11990 [2019-05-23 11:21:12,246 INFO L146 ILogger]: Start minimizeSevpa. Operand 319 states. [2019-05-23 11:21:12,252 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 319 to 270. [2019-05-23 11:21:12,252 INFO L146 ILogger]: Start removeUnreachable. Operand 270 states. [2019-05-23 11:21:12,253 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 270 states to 270 states and 274 transitions. [2019-05-23 11:21:12,253 INFO L146 ILogger]: Start accepts. Automaton has 270 states and 274 transitions. Word has length 244 [2019-05-23 11:21:12,253 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:12,254 INFO L146 ILogger]: Abstraction has 270 states and 274 transitions. [2019-05-23 11:21:12,254 INFO L146 ILogger]: Interpolant automaton has 53 states. [2019-05-23 11:21:12,254 INFO L146 ILogger]: Start isEmpty. Operand 270 states and 274 transitions. [2019-05-23 11:21:12,255 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 251 [2019-05-23 11:21:12,255 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:12,255 INFO L146 ILogger]: trace histogram [31, 31, 31, 31, 31, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:12,255 INFO L146 ILogger]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:12,255 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:12,256 INFO L146 ILogger]: Analyzing trace with hash 866590809, now seen corresponding path program 19 times [2019-05-23 11:21:12,256 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:12,256 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:12,256 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:12,257 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:12,257 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:12,278 INFO L146 ILogger]: Conjunction of SSA is unsat