java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_two_index_06_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:23,613 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:23,617 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:23,634 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:23,635 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:23,636 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:23,637 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:23,639 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:23,642 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:23,643 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:23,644 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:23,644 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:23,645 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:23,646 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:23,647 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:23,648 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:23,649 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:23,650 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:23,653 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:23,654 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:23,656 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:23,657 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:23,659 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:23,660 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:23,660 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:23,661 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:23,662 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:23,663 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:23,663 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:23,664 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:23,665 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:23,665 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:23,667 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:23,667 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:23,668 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:23,668 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:23,668 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:23,669 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:23,670 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:23,670 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:23,694 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:23,694 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:23,696 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:23,696 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:23,696 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:23,696 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:23,696 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:23,697 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:23,697 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:23,697 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:23,697 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:23,697 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:23,698 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:23,701 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:23,702 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:23,702 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:23,702 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:23,702 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:23,703 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:23,703 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:23,703 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:23,703 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:23,704 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:23,704 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:23,704 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:23,704 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:23,704 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:23,705 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:23,705 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 11:20:23,753 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:23,767 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:23,773 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:23,775 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:23,775 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:23,776 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_two_index_06_true-unreach-call.i [2019-05-23 11:20:23,833 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d103828/c7b8705116eb4d268641550f459e4054/FLAGbe357a519 [2019-05-23 11:20:24,263 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:24,264 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_two_index_06_true-unreach-call.i [2019-05-23 11:20:24,269 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d103828/c7b8705116eb4d268641550f459e4054/FLAGbe357a519 [2019-05-23 11:20:24,615 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d103828/c7b8705116eb4d268641550f459e4054 [2019-05-23 11:20:24,625 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:24,627 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:24,628 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:24,628 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:24,631 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:24,632 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:24" (1/1) ... [2019-05-23 11:20:24,635 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7ba85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24, skipping insertion in model container [2019-05-23 11:20:24,635 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:24" (1/1) ... [2019-05-23 11:20:24,643 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:24,663 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:24,847 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:24,852 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:24,877 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:24,898 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:24,899 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24 WrapperNode [2019-05-23 11:20:24,899 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:24,900 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:24,900 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:24,900 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:24,910 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24" (1/1) ... [2019-05-23 11:20:24,918 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24" (1/1) ... [2019-05-23 11:20:24,939 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:24,939 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:24,939 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:24,939 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:24,949 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24" (1/1) ... [2019-05-23 11:20:24,949 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24" (1/1) ... [2019-05-23 11:20:24,951 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24" (1/1) ... [2019-05-23 11:20:24,951 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24" (1/1) ... [2019-05-23 11:20:24,956 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24" (1/1) ... [2019-05-23 11:20:24,962 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24" (1/1) ... [2019-05-23 11:20:24,963 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24" (1/1) ... [2019-05-23 11:20:24,965 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:24,966 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:24,966 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:24,966 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:24,967 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24" (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 11:20:25,108 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:20:25,108 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:25,108 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:25,108 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:25,109 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:25,109 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:25,479 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:25,479 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:20:25,480 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:25 BoogieIcfgContainer [2019-05-23 11:20:25,481 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:25,482 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:25,482 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:25,485 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:25,485 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:24" (1/3) ... [2019-05-23 11:20:25,486 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f8106a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:25, skipping insertion in model container [2019-05-23 11:20:25,486 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:24" (2/3) ... [2019-05-23 11:20:25,487 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f8106a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:25, skipping insertion in model container [2019-05-23 11:20:25,487 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:25" (3/3) ... [2019-05-23 11:20:25,488 INFO L146 ILogger]: Analyzing ICFG standard_two_index_06_true-unreach-call.i [2019-05-23 11:20:25,498 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:25,505 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:25,518 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:25,547 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:25,547 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:25,547 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:25,548 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:25,548 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:25,548 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:25,548 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:25,548 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:25,548 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:25,563 INFO L146 ILogger]: Start isEmpty. Operand 43 states. [2019-05-23 11:20:25,569 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:25,569 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:25,570 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:25,572 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:25,576 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:25,577 INFO L146 ILogger]: Analyzing trace with hash -1541380129, now seen corresponding path program 1 times [2019-05-23 11:20:25,578 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:25,578 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:25,620 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,620 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:25,621 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,655 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,691 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 11:20:25,694 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:25,694 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:25,697 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:25,707 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:25,708 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:25,710 INFO L146 ILogger]: Start difference. First operand 43 states. Second operand 2 states. [2019-05-23 11:20:25,728 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:25,728 INFO L146 ILogger]: Finished difference Result 73 states and 83 transitions. [2019-05-23 11:20:25,728 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:25,729 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:20:25,730 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:25,738 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:20:25,739 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:20:25,742 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 11:20:25,755 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:20:25,768 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:20:25,769 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:20:25,770 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:20:25,772 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 21 [2019-05-23 11:20:25,772 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:25,772 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:20:25,773 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:25,773 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:20:25,773 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:25,774 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:25,774 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:25,775 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:25,775 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:25,775 INFO L146 ILogger]: Analyzing trace with hash 805843927, now seen corresponding path program 1 times [2019-05-23 11:20:25,775 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:25,775 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:25,776 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,777 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:25,777 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,790 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,880 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 11:20:25,880 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:25,881 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:25,882 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:25,883 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:25,886 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:25,887 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2019-05-23 11:20:26,134 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:26,134 INFO L146 ILogger]: Finished difference Result 62 states and 66 transitions. [2019-05-23 11:20:26,135 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:26,135 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:20:26,135 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:26,136 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:20:26,136 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:20:26,137 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 11:20:26,138 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:20:26,142 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-05-23 11:20:26,142 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:20:26,143 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-05-23 11:20:26,143 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 21 [2019-05-23 11:20:26,144 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:26,144 INFO L146 ILogger]: Abstraction has 36 states and 38 transitions. [2019-05-23 11:20:26,144 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:26,144 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 38 transitions. [2019-05-23 11:20:26,145 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:20:26,145 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:26,145 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:26,146 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:26,146 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:26,146 INFO L146 ILogger]: Analyzing trace with hash 1928914446, now seen corresponding path program 1 times [2019-05-23 11:20:26,146 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:26,146 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:26,147 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,148 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:26,148 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,180 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,231 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 11:20:26,231 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:26,232 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:26,232 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:26,232 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:26,233 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:26,233 INFO L146 ILogger]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2019-05-23 11:20:26,339 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:26,339 INFO L146 ILogger]: Finished difference Result 68 states and 71 transitions. [2019-05-23 11:20:26,339 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:26,340 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 26 [2019-05-23 11:20:26,340 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:26,341 INFO L146 ILogger]: With dead ends: 68 [2019-05-23 11:20:26,341 INFO L146 ILogger]: Without dead ends: 53 [2019-05-23 11:20:26,342 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 11:20:26,342 INFO L146 ILogger]: Start minimizeSevpa. Operand 53 states. [2019-05-23 11:20:26,346 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 53 to 37. [2019-05-23 11:20:26,347 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:20:26,348 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-05-23 11:20:26,348 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 26 [2019-05-23 11:20:26,348 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:26,349 INFO L146 ILogger]: Abstraction has 37 states and 39 transitions. [2019-05-23 11:20:26,349 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:26,349 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 39 transitions. [2019-05-23 11:20:26,350 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:20:26,350 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:26,350 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:26,350 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:26,351 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:26,351 INFO L146 ILogger]: Analyzing trace with hash 876855147, now seen corresponding path program 1 times [2019-05-23 11:20:26,351 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:26,351 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:26,352 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,353 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:26,353 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,375 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,481 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:26,482 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:26,482 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 11:20:26,500 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:26,548 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,550 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:26,558 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:26,675 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:26,694 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:26,695 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:26,695 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:26,695 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:26,696 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:26,696 INFO L146 ILogger]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2019-05-23 11:20:26,791 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:26,791 INFO L146 ILogger]: Finished difference Result 85 states and 89 transitions. [2019-05-23 11:20:26,792 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:26,792 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 32 [2019-05-23 11:20:26,792 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:26,793 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:20:26,793 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:20:26,794 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:26,795 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:20:26,801 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 42. [2019-05-23 11:20:26,801 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:20:26,803 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-05-23 11:20:26,803 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2019-05-23 11:20:26,804 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:26,804 INFO L146 ILogger]: Abstraction has 42 states and 44 transitions. [2019-05-23 11:20:26,804 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:26,804 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 44 transitions. [2019-05-23 11:20:26,805 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:20:26,805 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:26,805 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:26,806 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:26,806 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:26,806 INFO L146 ILogger]: Analyzing trace with hash -411413292, now seen corresponding path program 2 times [2019-05-23 11:20:26,806 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:26,806 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:26,808 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,808 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:26,808 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,825 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,903 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:26,904 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:26,904 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 11:20:26,919 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:26,967 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:26,967 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,968 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:26,971 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:27,008 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:27,034 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:27,034 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:20:27,034 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:20:27,035 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:20:27,035 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:27,035 INFO L146 ILogger]: Start difference. First operand 42 states and 44 transitions. Second operand 6 states. [2019-05-23 11:20:27,356 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:27,357 INFO L146 ILogger]: Finished difference Result 90 states and 94 transitions. [2019-05-23 11:20:27,360 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:27,360 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 37 [2019-05-23 11:20:27,360 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:27,361 INFO L146 ILogger]: With dead ends: 90 [2019-05-23 11:20:27,361 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:20:27,362 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:27,362 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:20:27,367 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 47. [2019-05-23 11:20:27,367 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:20:27,368 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2019-05-23 11:20:27,368 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 37 [2019-05-23 11:20:27,368 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:27,369 INFO L146 ILogger]: Abstraction has 47 states and 49 transitions. [2019-05-23 11:20:27,369 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:20:27,369 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 49 transitions. [2019-05-23 11:20:27,370 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:20:27,370 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:27,370 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:27,370 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:27,371 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:27,371 INFO L146 ILogger]: Analyzing trace with hash -1153058549, now seen corresponding path program 3 times [2019-05-23 11:20:27,371 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:27,371 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:27,372 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,373 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:27,373 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,403 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:27,466 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:27,467 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:27,467 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:20:27,488 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:27,508 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:20:27,508 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:27,508 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:27,510 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:27,543 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:27,562 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:27,563 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2019-05-23 11:20:27,563 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:20:27,563 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:20:27,564 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:27,564 INFO L146 ILogger]: Start difference. First operand 47 states and 49 transitions. Second operand 7 states. [2019-05-23 11:20:27,840 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:27,840 INFO L146 ILogger]: Finished difference Result 119 states and 125 transitions. [2019-05-23 11:20:27,841 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:20:27,841 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 42 [2019-05-23 11:20:27,841 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:27,842 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:20:27,842 INFO L146 ILogger]: Without dead ends: 96 [2019-05-23 11:20:27,843 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:27,843 INFO L146 ILogger]: Start minimizeSevpa. Operand 96 states. [2019-05-23 11:20:27,853 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 96 to 63. [2019-05-23 11:20:27,854 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:20:27,854 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2019-05-23 11:20:27,855 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 42 [2019-05-23 11:20:27,857 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:27,857 INFO L146 ILogger]: Abstraction has 63 states and 65 transitions. [2019-05-23 11:20:27,857 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:20:27,858 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 65 transitions. [2019-05-23 11:20:27,859 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:20:27,859 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:27,860 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:27,862 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:27,862 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:27,863 INFO L146 ILogger]: Analyzing trace with hash 1070488136, now seen corresponding path program 4 times [2019-05-23 11:20:27,863 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:27,863 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:27,866 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,866 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:27,867 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,909 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,065 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:28,065 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:28,066 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:20:28,078 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:28,105 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:28,105 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,106 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:28,109 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:28,144 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:28,162 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:28,162 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:20:28,163 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:28,163 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:28,163 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:28,164 INFO L146 ILogger]: Start difference. First operand 63 states and 65 transitions. Second operand 9 states. [2019-05-23 11:20:28,368 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:28,368 INFO L146 ILogger]: Finished difference Result 113 states and 117 transitions. [2019-05-23 11:20:28,369 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:28,369 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 58 [2019-05-23 11:20:28,369 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:28,370 INFO L146 ILogger]: With dead ends: 113 [2019-05-23 11:20:28,370 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:20:28,371 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:28,371 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:20:28,377 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 68. [2019-05-23 11:20:28,377 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:20:28,379 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2019-05-23 11:20:28,379 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 58 [2019-05-23 11:20:28,380 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:28,380 INFO L146 ILogger]: Abstraction has 68 states and 70 transitions. [2019-05-23 11:20:28,380 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:28,380 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 70 transitions. [2019-05-23 11:20:28,381 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 64 [2019-05-23 11:20:28,381 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:28,381 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:28,382 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:28,382 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:28,382 INFO L146 ILogger]: Analyzing trace with hash 1820626545, now seen corresponding path program 5 times [2019-05-23 11:20:28,382 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:28,382 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:28,383 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:28,383 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:28,383 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:28,401 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,558 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:28,559 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:28,559 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 11:20:28,570 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:28,638 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:20:28,638 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,641 INFO L146 ILogger]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:28,645 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:28,728 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:20:28,747 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:28,748 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2019-05-23 11:20:28,749 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:20:28,749 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:20:28,749 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:28,750 INFO L146 ILogger]: Start difference. First operand 68 states and 70 transitions. Second operand 11 states. [2019-05-23 11:20:29,165 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:29,165 INFO L146 ILogger]: Finished difference Result 164 states and 171 transitions. [2019-05-23 11:20:29,166 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:20:29,166 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 63 [2019-05-23 11:20:29,166 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:29,167 INFO L146 ILogger]: With dead ends: 164 [2019-05-23 11:20:29,167 INFO L146 ILogger]: Without dead ends: 135 [2019-05-23 11:20:29,168 INFO L146 ILogger]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:29,168 INFO L146 ILogger]: Start minimizeSevpa. Operand 135 states. [2019-05-23 11:20:29,176 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 135 to 89. [2019-05-23 11:20:29,176 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:20:29,177 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2019-05-23 11:20:29,177 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 63 [2019-05-23 11:20:29,178 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:29,178 INFO L146 ILogger]: Abstraction has 89 states and 91 transitions. [2019-05-23 11:20:29,178 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:20:29,178 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 91 transitions. [2019-05-23 11:20:29,179 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 85 [2019-05-23 11:20:29,180 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:29,180 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:29,180 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:29,181 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:29,181 INFO L146 ILogger]: Analyzing trace with hash 2137983845, now seen corresponding path program 6 times [2019-05-23 11:20:29,181 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:29,181 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:29,182 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,182 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:29,182 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,205 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:29,569 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 11:20:29,570 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:29,570 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 11:20:29,584 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:29,718 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:29,718 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:29,720 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:29,729 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:30,079 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-05-23 11:20:30,097 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:30,097 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 14 [2019-05-23 11:20:30,098 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:20:30,098 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:20:30,098 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:30,098 INFO L146 ILogger]: Start difference. First operand 89 states and 91 transitions. Second operand 14 states. [2019-05-23 11:20:30,319 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:30,319 INFO L146 ILogger]: Finished difference Result 204 states and 211 transitions. [2019-05-23 11:20:30,320 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:30,320 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 84 [2019-05-23 11:20:30,320 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:30,322 INFO L146 ILogger]: With dead ends: 204 [2019-05-23 11:20:30,322 INFO L146 ILogger]: Without dead ends: 169 [2019-05-23 11:20:30,323 INFO L146 ILogger]: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:30,324 INFO L146 ILogger]: Start minimizeSevpa. Operand 169 states. [2019-05-23 11:20:30,332 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 169 to 110. [2019-05-23 11:20:30,332 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:20:30,334 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2019-05-23 11:20:30,334 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 84 [2019-05-23 11:20:30,335 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:30,335 INFO L146 ILogger]: Abstraction has 110 states and 112 transitions. [2019-05-23 11:20:30,335 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:20:30,335 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 112 transitions. [2019-05-23 11:20:30,340 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:20:30,341 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:30,341 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:30,341 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:30,342 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:30,342 INFO L146 ILogger]: Analyzing trace with hash -1782519285, now seen corresponding path program 7 times [2019-05-23 11:20:30,342 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:30,342 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:30,344 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:30,344 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:30,344 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:30,366 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:30,653 INFO L146 ILogger]: Checked inductivity of 382 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:30,654 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:30,654 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 11:20:30,665 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:30,687 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:30,688 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:20:30,693 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:30,719 INFO L146 ILogger]: Checked inductivity of 382 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:30,739 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:30,739 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:20:30,740 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:20:30,740 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:20:30,740 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:30,740 INFO L146 ILogger]: Start difference. First operand 110 states and 112 transitions. Second operand 16 states. [2019-05-23 11:20:31,050 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:31,050 INFO L146 ILogger]: Finished difference Result 185 states and 189 transitions. [2019-05-23 11:20:31,051 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:20:31,051 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 105 [2019-05-23 11:20:31,051 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:31,053 INFO L146 ILogger]: With dead ends: 185 [2019-05-23 11:20:31,053 INFO L146 ILogger]: Without dead ends: 144 [2019-05-23 11:20:31,053 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:31,054 INFO L146 ILogger]: Start minimizeSevpa. Operand 144 states. [2019-05-23 11:20:31,059 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 144 to 115. [2019-05-23 11:20:31,059 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:20:31,059 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2019-05-23 11:20:31,060 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 105 [2019-05-23 11:20:31,060 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:31,060 INFO L146 ILogger]: Abstraction has 115 states and 117 transitions. [2019-05-23 11:20:31,060 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:20:31,060 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 117 transitions. [2019-05-23 11:20:31,061 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:20:31,062 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:31,062 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:31,062 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:31,062 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:31,063 INFO L146 ILogger]: Analyzing trace with hash 1755325122, now seen corresponding path program 8 times [2019-05-23 11:20:31,063 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:31,063 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:31,064 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:31,064 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:31,064 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:31,084 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:31,324 INFO L146 ILogger]: Checked inductivity of 443 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:31,325 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:31,325 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:20:31,333 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:31,364 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:31,364 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:31,365 INFO L146 ILogger]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:20:31,369 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:31,404 INFO L146 ILogger]: Checked inductivity of 443 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:31,425 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:31,425 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:20:31,426 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:20:31,426 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:20:31,427 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:31,427 INFO L146 ILogger]: Start difference. First operand 115 states and 117 transitions. Second operand 17 states. [2019-05-23 11:20:31,622 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:31,623 INFO L146 ILogger]: Finished difference Result 203 states and 207 transitions. [2019-05-23 11:20:31,623 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:20:31,623 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 110 [2019-05-23 11:20:31,624 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:31,625 INFO L146 ILogger]: With dead ends: 203 [2019-05-23 11:20:31,625 INFO L146 ILogger]: Without dead ends: 162 [2019-05-23 11:20:31,626 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:31,626 INFO L146 ILogger]: Start minimizeSevpa. Operand 162 states. [2019-05-23 11:20:31,631 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 162 to 120. [2019-05-23 11:20:31,631 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:20:31,632 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2019-05-23 11:20:31,632 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 110 [2019-05-23 11:20:31,632 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:31,632 INFO L146 ILogger]: Abstraction has 120 states and 122 transitions. [2019-05-23 11:20:31,632 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:20:31,633 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 122 transitions. [2019-05-23 11:20:31,634 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:20:31,634 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:31,634 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:31,634 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:31,634 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:31,635 INFO L146 ILogger]: Analyzing trace with hash 1355465835, now seen corresponding path program 9 times [2019-05-23 11:20:31,635 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:31,635 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:31,636 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:31,636 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:31,636 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:31,670 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:31,953 INFO L146 ILogger]: Checked inductivity of 509 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:31,954 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:31,954 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 11:20:31,962 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:32,011 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:20:32,011 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:32,012 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:32,014 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:32,088 INFO L146 ILogger]: Checked inductivity of 509 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2019-05-23 11:20:32,106 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:32,106 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 19 [2019-05-23 11:20:32,107 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:20:32,107 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:20:32,107 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:32,108 INFO L146 ILogger]: Start difference. First operand 120 states and 122 transitions. Second operand 19 states. [2019-05-23 11:20:32,305 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:32,306 INFO L146 ILogger]: Finished difference Result 254 states and 261 transitions. [2019-05-23 11:20:32,306 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:20:32,306 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 115 [2019-05-23 11:20:32,307 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:32,308 INFO L146 ILogger]: With dead ends: 254 [2019-05-23 11:20:32,309 INFO L146 ILogger]: Without dead ends: 213 [2019-05-23 11:20:32,309 INFO L146 ILogger]: 0 DeclaredPredicates, 131 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:32,310 INFO L146 ILogger]: Start minimizeSevpa. Operand 213 states. [2019-05-23 11:20:32,316 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 213 to 141. [2019-05-23 11:20:32,316 INFO L146 ILogger]: Start removeUnreachable. Operand 141 states. [2019-05-23 11:20:32,317 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2019-05-23 11:20:32,317 INFO L146 ILogger]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 115 [2019-05-23 11:20:32,317 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:32,317 INFO L146 ILogger]: Abstraction has 141 states and 143 transitions. [2019-05-23 11:20:32,318 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:20:32,318 INFO L146 ILogger]: Start isEmpty. Operand 141 states and 143 transitions. [2019-05-23 11:20:32,319 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 137 [2019-05-23 11:20:32,319 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:32,319 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:32,319 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:32,320 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:32,320 INFO L146 ILogger]: Analyzing trace with hash -1629491105, now seen corresponding path program 10 times [2019-05-23 11:20:32,320 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:32,320 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:32,321 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:32,321 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:32,321 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:32,339 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:33,340 INFO L146 ILogger]: Checked inductivity of 762 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:33,341 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:33,341 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 11:20:33,350 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:33,591 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:33,591 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:33,593 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:20:33,596 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:33,643 INFO L146 ILogger]: Checked inductivity of 762 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:33,663 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:33,663 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:20:33,664 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:20:33,664 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:20:33,664 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:33,665 INFO L146 ILogger]: Start difference. First operand 141 states and 143 transitions. Second operand 21 states. [2019-05-23 11:20:33,889 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:33,889 INFO L146 ILogger]: Finished difference Result 235 states and 239 transitions. [2019-05-23 11:20:33,890 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:20:33,890 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 136 [2019-05-23 11:20:33,890 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:33,892 INFO L146 ILogger]: With dead ends: 235 [2019-05-23 11:20:33,892 INFO L146 ILogger]: Without dead ends: 188 [2019-05-23 11:20:33,893 INFO L146 ILogger]: 0 DeclaredPredicates, 155 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:33,894 INFO L146 ILogger]: Start minimizeSevpa. Operand 188 states. [2019-05-23 11:20:33,897 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 188 to 146. [2019-05-23 11:20:33,897 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:20:33,898 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2019-05-23 11:20:33,898 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 136 [2019-05-23 11:20:33,898 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:33,899 INFO L146 ILogger]: Abstraction has 146 states and 148 transitions. [2019-05-23 11:20:33,899 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:20:33,899 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 148 transitions. [2019-05-23 11:20:33,900 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 142 [2019-05-23 11:20:33,900 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:33,900 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:33,901 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:33,901 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:33,901 INFO L146 ILogger]: Analyzing trace with hash 412573896, now seen corresponding path program 11 times [2019-05-23 11:20:33,901 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:33,901 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:33,902 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:33,902 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:33,902 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:33,919 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,322 INFO L146 ILogger]: Checked inductivity of 848 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:34,322 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:34,322 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 11:20:34,331 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:34,907 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:20:34,907 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,909 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:34,911 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:34,990 INFO L146 ILogger]: Checked inductivity of 848 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2019-05-23 11:20:35,009 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:35,010 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 8] total 24 [2019-05-23 11:20:35,010 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:20:35,011 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:20:35,011 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:35,011 INFO L146 ILogger]: Start difference. First operand 146 states and 148 transitions. Second operand 24 states. [2019-05-23 11:20:35,316 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:35,317 INFO L146 ILogger]: Finished difference Result 304 states and 312 transitions. [2019-05-23 11:20:35,317 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:20:35,317 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 141 [2019-05-23 11:20:35,317 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:35,319 INFO L146 ILogger]: With dead ends: 304 [2019-05-23 11:20:35,319 INFO L146 ILogger]: Without dead ends: 257 [2019-05-23 11:20:35,320 INFO L146 ILogger]: 0 DeclaredPredicates, 161 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:35,320 INFO L146 ILogger]: Start minimizeSevpa. Operand 257 states. [2019-05-23 11:20:35,323 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 257 to 172. [2019-05-23 11:20:35,324 INFO L146 ILogger]: Start removeUnreachable. Operand 172 states. [2019-05-23 11:20:35,324 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2019-05-23 11:20:35,325 INFO L146 ILogger]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 141 [2019-05-23 11:20:35,325 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:35,325 INFO L146 ILogger]: Abstraction has 172 states and 174 transitions. [2019-05-23 11:20:35,325 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:20:35,325 INFO L146 ILogger]: Start isEmpty. Operand 172 states and 174 transitions. [2019-05-23 11:20:35,327 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:20:35,327 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:35,327 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:35,327 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:35,327 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:35,328 INFO L146 ILogger]: Analyzing trace with hash -851700891, now seen corresponding path program 12 times [2019-05-23 11:20:35,328 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:35,328 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:35,328 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:35,329 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:35,329 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:35,347 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:35,961 INFO L146 ILogger]: Checked inductivity of 1273 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:35,961 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:35,961 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 11:20:35,972 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:36,399 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:20:36,399 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:36,401 INFO L146 ILogger]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:36,403 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:36,617 INFO L146 ILogger]: Checked inductivity of 1273 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2019-05-23 11:20:36,637 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:36,637 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9] total 28 [2019-05-23 11:20:36,638 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:20:36,638 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:20:36,639 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:20:36,639 INFO L146 ILogger]: Start difference. First operand 172 states and 174 transitions. Second operand 28 states. [2019-05-23 11:20:37,277 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:37,278 INFO L146 ILogger]: Finished difference Result 349 states and 357 transitions. [2019-05-23 11:20:37,278 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:20:37,278 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 167 [2019-05-23 11:20:37,279 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:37,280 INFO L146 ILogger]: With dead ends: 349 [2019-05-23 11:20:37,280 INFO L146 ILogger]: Without dead ends: 296 [2019-05-23 11:20:37,281 INFO L146 ILogger]: 0 DeclaredPredicates, 191 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:20:37,281 INFO L146 ILogger]: Start minimizeSevpa. Operand 296 states. [2019-05-23 11:20:37,288 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 296 to 198. [2019-05-23 11:20:37,289 INFO L146 ILogger]: Start removeUnreachable. Operand 198 states. [2019-05-23 11:20:37,289 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2019-05-23 11:20:37,291 INFO L146 ILogger]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 167 [2019-05-23 11:20:37,292 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:37,292 INFO L146 ILogger]: Abstraction has 198 states and 200 transitions. [2019-05-23 11:20:37,292 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:20:37,292 INFO L146 ILogger]: Start isEmpty. Operand 198 states and 200 transitions. [2019-05-23 11:20:37,293 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 194 [2019-05-23 11:20:37,293 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:37,293 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:37,293 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:37,294 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:37,294 INFO L146 ILogger]: Analyzing trace with hash 730541122, now seen corresponding path program 13 times [2019-05-23 11:20:37,294 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:37,294 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:37,295 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,295 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:37,295 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,315 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,753 INFO L146 ILogger]: Checked inductivity of 1784 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:37,754 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:37,754 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 11:20:37,762 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:37,812 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,814 INFO L146 ILogger]: Trace formula consists of 295 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:20:37,816 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:37,901 INFO L146 ILogger]: Checked inductivity of 1784 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:37,932 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:37,932 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2019-05-23 11:20:37,933 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:20:37,933 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:20:37,934 INFO L146 ILogger]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:20:37,934 INFO L146 ILogger]: Start difference. First operand 198 states and 200 transitions. Second operand 30 states. [2019-05-23 11:20:38,621 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:38,622 INFO L146 ILogger]: Finished difference Result 330 states and 334 transitions. [2019-05-23 11:20:38,622 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:20:38,622 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 193 [2019-05-23 11:20:38,623 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:38,624 INFO L146 ILogger]: With dead ends: 330 [2019-05-23 11:20:38,624 INFO L146 ILogger]: Without dead ends: 271 [2019-05-23 11:20:38,625 INFO L146 ILogger]: 0 DeclaredPredicates, 221 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:20:38,626 INFO L146 ILogger]: Start minimizeSevpa. Operand 271 states. [2019-05-23 11:20:38,630 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 271 to 203. [2019-05-23 11:20:38,630 INFO L146 ILogger]: Start removeUnreachable. Operand 203 states. [2019-05-23 11:20:38,631 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2019-05-23 11:20:38,631 INFO L146 ILogger]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 193 [2019-05-23 11:20:38,632 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:38,632 INFO L146 ILogger]: Abstraction has 203 states and 205 transitions. [2019-05-23 11:20:38,632 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:20:38,632 INFO L146 ILogger]: Start isEmpty. Operand 203 states and 205 transitions. [2019-05-23 11:20:38,633 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 199 [2019-05-23 11:20:38,633 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:38,633 INFO L146 ILogger]: trace histogram [27, 27, 27, 27, 27, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:38,634 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:38,634 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:38,634 INFO L146 ILogger]: Analyzing trace with hash -519030791, now seen corresponding path program 14 times [2019-05-23 11:20:38,634 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:38,634 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:38,635 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,635 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:38,635 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,656 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,523 INFO L146 ILogger]: Checked inductivity of 1915 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:39,523 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:39,523 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 11:20:39,533 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:39,577 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:39,577 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,579 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:20:39,581 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:39,655 INFO L146 ILogger]: Checked inductivity of 1915 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:39,674 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:39,674 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-05-23 11:20:39,674 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:20:39,674 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:20:39,675 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:39,675 INFO L146 ILogger]: Start difference. First operand 203 states and 205 transitions. Second operand 31 states. [2019-05-23 11:20:39,969 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:39,969 INFO L146 ILogger]: Finished difference Result 335 states and 339 transitions. [2019-05-23 11:20:39,969 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:20:39,969 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 198 [2019-05-23 11:20:39,970 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:39,972 INFO L146 ILogger]: With dead ends: 335 [2019-05-23 11:20:39,972 INFO L146 ILogger]: Without dead ends: 276 [2019-05-23 11:20:39,973 INFO L146 ILogger]: 0 DeclaredPredicates, 227 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:39,973 INFO L146 ILogger]: Start minimizeSevpa. Operand 276 states. [2019-05-23 11:20:39,977 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 276 to 208. [2019-05-23 11:20:39,978 INFO L146 ILogger]: Start removeUnreachable. Operand 208 states. [2019-05-23 11:20:39,978 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2019-05-23 11:20:39,978 INFO L146 ILogger]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 198 [2019-05-23 11:20:39,979 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:39,979 INFO L146 ILogger]: Abstraction has 208 states and 210 transitions. [2019-05-23 11:20:39,979 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:20:39,979 INFO L146 ILogger]: Start isEmpty. Operand 208 states and 210 transitions. [2019-05-23 11:20:39,980 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 204 [2019-05-23 11:20:39,980 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:39,980 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:39,981 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:39,981 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:39,981 INFO L146 ILogger]: Analyzing trace with hash -733944158, now seen corresponding path program 15 times [2019-05-23 11:20:39,981 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:39,981 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:39,982 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:39,982 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:39,982 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:40,004 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:40,914 INFO L146 ILogger]: Checked inductivity of 2051 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:40,914 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:40,915 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 11:20:40,927 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:41,129 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:20:41,129 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:41,130 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:41,133 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:41,288 INFO L146 ILogger]: Checked inductivity of 2051 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 1918 trivial. 0 not checked. [2019-05-23 11:20:41,307 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:41,308 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 10] total 34 [2019-05-23 11:20:41,308 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:20:41,308 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:20:41,309 INFO L146 ILogger]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:20:41,309 INFO L146 ILogger]: Start difference. First operand 208 states and 210 transitions. Second operand 34 states. [2019-05-23 11:20:42,200 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:42,200 INFO L146 ILogger]: Finished difference Result 404 states and 412 transitions. [2019-05-23 11:20:42,201 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:20:42,201 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 203 [2019-05-23 11:20:42,201 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:42,203 INFO L146 ILogger]: With dead ends: 404 [2019-05-23 11:20:42,203 INFO L146 ILogger]: Without dead ends: 345 [2019-05-23 11:20:42,204 INFO L146 ILogger]: 0 DeclaredPredicates, 233 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:20:42,205 INFO L146 ILogger]: Start minimizeSevpa. Operand 345 states. [2019-05-23 11:20:42,209 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 345 to 234. [2019-05-23 11:20:42,209 INFO L146 ILogger]: Start removeUnreachable. Operand 234 states. [2019-05-23 11:20:42,210 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 234 states to 234 states and 236 transitions. [2019-05-23 11:20:42,210 INFO L146 ILogger]: Start accepts. Automaton has 234 states and 236 transitions. Word has length 203 [2019-05-23 11:20:42,211 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:42,211 INFO L146 ILogger]: Abstraction has 234 states and 236 transitions. [2019-05-23 11:20:42,211 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:20:42,211 INFO L146 ILogger]: Start isEmpty. Operand 234 states and 236 transitions. [2019-05-23 11:20:42,212 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 230 [2019-05-23 11:20:42,212 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:42,213 INFO L146 ILogger]: trace histogram [32, 32, 32, 32, 32, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:42,213 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:42,213 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:42,213 INFO L146 ILogger]: Analyzing trace with hash 1130528191, now seen corresponding path program 16 times [2019-05-23 11:20:42,213 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:42,213 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:42,214 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,214 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:42,214 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,236 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,896 INFO L146 ILogger]: Checked inductivity of 2688 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:43,897 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:43,897 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 11:20:43,906 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:49,445 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:49,445 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:49,452 INFO L146 ILogger]: Trace formula consists of 346 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:20:49,455 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:49,517 INFO L146 ILogger]: Checked inductivity of 2688 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:49,548 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:49,548 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2019-05-23 11:20:49,549 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:20:49,549 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:20:49,549 INFO L146 ILogger]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:20:49,550 INFO L146 ILogger]: Start difference. First operand 234 states and 236 transitions. Second operand 36 states. [2019-05-23 11:20:49,891 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:49,891 INFO L146 ILogger]: Finished difference Result 385 states and 389 transitions. [2019-05-23 11:20:49,892 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:20:49,892 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 229 [2019-05-23 11:20:49,892 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:49,893 INFO L146 ILogger]: With dead ends: 385 [2019-05-23 11:20:49,893 INFO L146 ILogger]: Without dead ends: 320 [2019-05-23 11:20:49,895 INFO L146 ILogger]: 0 DeclaredPredicates, 263 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:20:49,895 INFO L146 ILogger]: Start minimizeSevpa. Operand 320 states. [2019-05-23 11:20:49,899 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 320 to 239. [2019-05-23 11:20:49,899 INFO L146 ILogger]: Start removeUnreachable. Operand 239 states. [2019-05-23 11:20:49,900 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 239 states to 239 states and 241 transitions. [2019-05-23 11:20:49,900 INFO L146 ILogger]: Start accepts. Automaton has 239 states and 241 transitions. Word has length 229 [2019-05-23 11:20:49,901 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:49,901 INFO L146 ILogger]: Abstraction has 239 states and 241 transitions. [2019-05-23 11:20:49,901 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:20:49,901 INFO L146 ILogger]: Start isEmpty. Operand 239 states and 241 transitions. [2019-05-23 11:20:49,902 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 235 [2019-05-23 11:20:49,902 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:49,902 INFO L146 ILogger]: trace histogram [33, 33, 33, 33, 33, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:49,903 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:49,903 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:49,903 INFO L146 ILogger]: Analyzing trace with hash -1653196298, now seen corresponding path program 17 times [2019-05-23 11:20:49,903 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:49,903 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:49,904 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,904 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:49,904 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,926 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,605 INFO L146 ILogger]: Checked inductivity of 2849 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:50,605 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:50,605 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 11:20:50,614 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:27,077 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2019-05-23 11:21:27,077 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:27,097 INFO L146 ILogger]: Trace formula consists of 353 conjuncts, 35 conjunts are in the unsatisfiable core [2019-05-23 11:21:27,100 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:27,176 INFO L146 ILogger]: Checked inductivity of 2849 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:27,215 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:27,215 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2019-05-23 11:21:27,216 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:21:27,217 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:21:27,217 INFO L146 ILogger]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:21:27,218 INFO L146 ILogger]: Start difference. First operand 239 states and 241 transitions. Second operand 37 states. [2019-05-23 11:21:27,916 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:27,916 INFO L146 ILogger]: Finished difference Result 390 states and 394 transitions. [2019-05-23 11:21:27,917 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:21:27,917 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 234 [2019-05-23 11:21:27,917 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:27,918 INFO L146 ILogger]: With dead ends: 390 [2019-05-23 11:21:27,919 INFO L146 ILogger]: Without dead ends: 325 [2019-05-23 11:21:27,919 INFO L146 ILogger]: 0 DeclaredPredicates, 269 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:21:27,920 INFO L146 ILogger]: Start minimizeSevpa. Operand 325 states. [2019-05-23 11:21:27,924 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 325 to 244. [2019-05-23 11:21:27,924 INFO L146 ILogger]: Start removeUnreachable. Operand 244 states. [2019-05-23 11:21:27,925 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 244 states to 244 states and 246 transitions. [2019-05-23 11:21:27,925 INFO L146 ILogger]: Start accepts. Automaton has 244 states and 246 transitions. Word has length 234 [2019-05-23 11:21:27,925 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:27,925 INFO L146 ILogger]: Abstraction has 244 states and 246 transitions. [2019-05-23 11:21:27,925 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:21:27,926 INFO L146 ILogger]: Start isEmpty. Operand 244 states and 246 transitions. [2019-05-23 11:21:27,927 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 240 [2019-05-23 11:21:27,927 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:27,927 INFO L146 ILogger]: trace histogram [34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:27,927 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:27,928 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:27,928 INFO L146 ILogger]: Analyzing trace with hash -1003321313, now seen corresponding path program 18 times [2019-05-23 11:21:27,928 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:27,928 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:27,929 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:27,929 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:27,929 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:27,951 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:28,541 INFO L146 ILogger]: Checked inductivity of 3015 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:28,542 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:28,542 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:28,551 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:31,023 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2019-05-23 11:21:31,023 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:31,027 INFO L146 ILogger]: Trace formula consists of 234 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:21:31,029 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:31,155 INFO L146 ILogger]: Checked inductivity of 3015 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2019-05-23 11:21:31,174 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:31,175 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 11] total 40 [2019-05-23 11:21:31,175 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:21:31,175 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:21:31,176 INFO L146 ILogger]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:21:31,176 INFO L146 ILogger]: Start difference. First operand 244 states and 246 transitions. Second operand 40 states. [2019-05-23 11:21:31,598 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:31,598 INFO L146 ILogger]: Finished difference Result 459 states and 467 transitions. [2019-05-23 11:21:31,598 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:21:31,599 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 239 [2019-05-23 11:21:31,599 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:31,602 INFO L146 ILogger]: With dead ends: 459 [2019-05-23 11:21:31,602 INFO L146 ILogger]: Without dead ends: 394 [2019-05-23 11:21:31,603 INFO L146 ILogger]: 0 DeclaredPredicates, 275 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:21:31,604 INFO L146 ILogger]: Start minimizeSevpa. Operand 394 states. [2019-05-23 11:21:31,608 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 394 to 270. [2019-05-23 11:21:31,608 INFO L146 ILogger]: Start removeUnreachable. Operand 270 states. [2019-05-23 11:21:31,609 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 270 states to 270 states and 272 transitions. [2019-05-23 11:21:31,609 INFO L146 ILogger]: Start accepts. Automaton has 270 states and 272 transitions. Word has length 239 [2019-05-23 11:21:31,609 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:31,610 INFO L146 ILogger]: Abstraction has 270 states and 272 transitions. [2019-05-23 11:21:31,610 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:21:31,610 INFO L146 ILogger]: Start isEmpty. Operand 270 states and 272 transitions. [2019-05-23 11:21:31,611 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 266 [2019-05-23 11:21:31,611 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:31,611 INFO L146 ILogger]: trace histogram [38, 38, 38, 38, 38, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:31,612 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:31,612 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:31,612 INFO L146 ILogger]: Analyzing trace with hash -1265439364, now seen corresponding path program 19 times [2019-05-23 11:21:31,612 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:31,612 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:31,613 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:31,613 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:31,613 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:31,638 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:32,802 INFO L146 ILogger]: Checked inductivity of 3778 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:21:32,802 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:32,802 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:32,810 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:32,867 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:32,869 INFO L146 ILogger]: Trace formula consists of 397 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:21:32,872 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:33,044 INFO L146 ILogger]: Checked inductivity of 3778 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:21:33,088 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:33,088 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2019-05-23 11:21:33,089 INFO L146 ILogger]: Interpolant automaton has 42 states [2019-05-23 11:21:33,090 INFO L146 ILogger]: Constructing interpolant automaton starting with 42 interpolants. [2019-05-23 11:21:33,091 INFO L146 ILogger]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:21:33,091 INFO L146 ILogger]: Start difference. First operand 270 states and 272 transitions. Second operand 42 states. [2019-05-23 11:21:34,175 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:34,175 INFO L146 ILogger]: Finished difference Result 440 states and 444 transitions. [2019-05-23 11:21:34,177 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-05-23 11:21:34,178 INFO L146 ILogger]: Start accepts. Automaton has 42 states. Word has length 265 [2019-05-23 11:21:34,178 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:34,180 INFO L146 ILogger]: With dead ends: 440 [2019-05-23 11:21:34,180 INFO L146 ILogger]: Without dead ends: 369 [2019-05-23 11:21:34,181 INFO L146 ILogger]: 0 DeclaredPredicates, 305 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:21:34,181 INFO L146 ILogger]: Start minimizeSevpa. Operand 369 states. [2019-05-23 11:21:34,185 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 369 to 275. [2019-05-23 11:21:34,186 INFO L146 ILogger]: Start removeUnreachable. Operand 275 states. [2019-05-23 11:21:34,186 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 275 states to 275 states and 277 transitions. [2019-05-23 11:21:34,187 INFO L146 ILogger]: Start accepts. Automaton has 275 states and 277 transitions. Word has length 265 [2019-05-23 11:21:34,187 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:34,187 INFO L146 ILogger]: Abstraction has 275 states and 277 transitions. [2019-05-23 11:21:34,187 INFO L146 ILogger]: Interpolant automaton has 42 states. [2019-05-23 11:21:34,187 INFO L146 ILogger]: Start isEmpty. Operand 275 states and 277 transitions. [2019-05-23 11:21:34,188 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 271 [2019-05-23 11:21:34,189 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:34,189 INFO L146 ILogger]: trace histogram [39, 39, 39, 39, 39, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:34,189 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:34,189 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:34,189 INFO L146 ILogger]: Analyzing trace with hash 965155379, now seen corresponding path program 20 times [2019-05-23 11:21:34,190 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:34,190 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:34,190 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:34,190 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:34,190 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:34,215 INFO L146 ILogger]: Conjunction of SSA is unsat