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_compare_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:16:49,687 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:16:49,689 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:16:49,702 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:16:49,702 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:16:49,703 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:16:49,705 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:16:49,707 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:16:49,709 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:16:49,710 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:16:49,711 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:16:49,711 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:16:49,712 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:16:49,713 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:16:49,714 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:16:49,715 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:16:49,716 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:16:49,718 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:16:49,720 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:16:49,722 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:16:49,723 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:16:49,724 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:16:49,727 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:16:49,727 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:16:49,728 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:16:49,729 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:16:49,729 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:16:49,730 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:16:49,730 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:16:49,731 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:16:49,732 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:16:49,733 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:16:49,734 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:16:49,734 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:16:49,735 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:16:49,735 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:16:49,736 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:16:49,737 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:16:49,737 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:16:49,738 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:16:49,753 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:16:49,753 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:16:49,754 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:16:49,755 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:16:49,755 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:16:49,755 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:16:49,755 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:16:49,756 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:16:49,756 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:16:49,756 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:16:49,756 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:16:49,756 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:16:49,756 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:16:49,757 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:16:49,757 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:16:49,757 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:16:49,757 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:16:49,757 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:16:49,758 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:16:49,758 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:16:49,758 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:16:49,758 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:16:49,759 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:16:49,759 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:16:49,759 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:16:49,759 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:16:49,759 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:16:49,760 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:16:49,760 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 11:16:49,791 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:16:49,806 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:16:49,811 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:16:49,813 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:16:49,813 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:16:49,815 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_compare_true-unreach-call_ground.i [2019-05-23 11:16:49,880 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b74ab4016/5e99a6e7fdb74619b55b7f1158a43da1/FLAG4171a5fa5 [2019-05-23 11:16:50,287 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:16:50,288 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_compare_true-unreach-call_ground.i [2019-05-23 11:16:50,294 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b74ab4016/5e99a6e7fdb74619b55b7f1158a43da1/FLAG4171a5fa5 [2019-05-23 11:16:50,677 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b74ab4016/5e99a6e7fdb74619b55b7f1158a43da1 [2019-05-23 11:16:50,688 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:16:50,689 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:16:50,690 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:50,690 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:16:50,694 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:16:50,695 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,698 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2271f7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50, skipping insertion in model container [2019-05-23 11:16:50,699 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,706 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:16:50,722 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:16:50,952 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:50,959 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:16:50,990 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:51,015 INFO L146 ILogger]: Completed translation [2019-05-23 11:16:51,015 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51 WrapperNode [2019-05-23 11:16:51,016 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:51,017 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:51,018 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:16:51,018 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:16:51,028 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,042 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,067 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:51,069 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:16:51,069 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:16:51,069 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:16:51,081 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,081 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,084 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,084 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,090 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,095 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,096 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,098 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:16:51,099 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:16:51,099 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:16:51,099 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:16:51,101 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (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 11:16:51,244 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:16:51,244 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:16:51,244 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:16:51,245 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:16:51,245 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:16:51,679 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:16:51,680 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:16:51,681 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:51 BoogieIcfgContainer [2019-05-23 11:16:51,681 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:16:51,682 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:16:51,682 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:16:51,685 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:16:51,686 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:16:50" (1/3) ... [2019-05-23 11:16:51,687 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b3a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:51, skipping insertion in model container [2019-05-23 11:16:51,687 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (2/3) ... [2019-05-23 11:16:51,687 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b3a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:51, skipping insertion in model container [2019-05-23 11:16:51,687 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:51" (3/3) ... [2019-05-23 11:16:51,689 INFO L146 ILogger]: Analyzing ICFG standard_compare_true-unreach-call_ground.i [2019-05-23 11:16:51,699 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:16:51,707 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:16:51,724 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:16:51,756 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:16:51,757 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:16:51,757 INFO L146 ILogger]: Hoare is true [2019-05-23 11:16:51,757 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:16:51,758 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:16:51,758 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:16:51,758 INFO L146 ILogger]: Difference is false [2019-05-23 11:16:51,758 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:16:51,758 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:16:51,773 INFO L146 ILogger]: Start isEmpty. Operand 43 states. [2019-05-23 11:16:51,781 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:16:51,781 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:51,782 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:51,785 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:51,790 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:51,790 INFO L146 ILogger]: Analyzing trace with hash 1057438351, now seen corresponding path program 1 times [2019-05-23 11:16:51,792 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:51,792 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:51,836 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,836 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:51,836 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,877 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:51,918 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 11:16:51,920 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:51,920 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:16:51,923 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:16:51,933 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:16:51,934 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:16:51,936 INFO L146 ILogger]: Start difference. First operand 43 states. Second operand 2 states. [2019-05-23 11:16:51,952 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:51,952 INFO L146 ILogger]: Finished difference Result 68 states and 77 transitions. [2019-05-23 11:16:51,952 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:16:51,954 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 20 [2019-05-23 11:16:51,954 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:51,964 INFO L146 ILogger]: With dead ends: 68 [2019-05-23 11:16:51,965 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:16:51,968 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 11:16:51,988 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:16:52,002 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:16:52,003 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:16:52,005 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:16:52,007 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 20 [2019-05-23 11:16:52,007 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:52,007 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:16:52,007 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:16:52,008 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:16:52,008 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:16:52,009 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,009 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:52,009 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,009 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,010 INFO L146 ILogger]: Analyzing trace with hash -1266050591, now seen corresponding path program 1 times [2019-05-23 11:16:52,010 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,010 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,011 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,011 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,011 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,028 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,073 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 11:16:52,074 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:52,074 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:52,076 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:52,076 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:52,077 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:52,077 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2019-05-23 11:16:52,140 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:52,140 INFO L146 ILogger]: Finished difference Result 62 states and 66 transitions. [2019-05-23 11:16:52,141 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:52,141 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 20 [2019-05-23 11:16:52,142 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:52,143 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:16:52,143 INFO L146 ILogger]: Without dead ends: 45 [2019-05-23 11:16:52,144 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 11:16:52,144 INFO L146 ILogger]: Start minimizeSevpa. Operand 45 states. [2019-05-23 11:16:52,149 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 45 to 36. [2019-05-23 11:16:52,149 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:16:52,150 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-05-23 11:16:52,151 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 20 [2019-05-23 11:16:52,151 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:52,151 INFO L146 ILogger]: Abstraction has 36 states and 38 transitions. [2019-05-23 11:16:52,151 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:52,151 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 38 transitions. [2019-05-23 11:16:52,152 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:16:52,152 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,153 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] [2019-05-23 11:16:52,153 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,153 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,153 INFO L146 ILogger]: Analyzing trace with hash 1374249676, now seen corresponding path program 1 times [2019-05-23 11:16:52,154 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,154 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,155 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,155 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,155 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,180 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,355 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:52,355 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:52,356 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 11:16:52,374 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,424 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,427 INFO L146 ILogger]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:16:52,434 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:52,502 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:52,531 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:52,531 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:16:52,532 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:16:52,532 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:16:52,533 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:16:52,533 INFO L146 ILogger]: Start difference. First operand 36 states and 38 transitions. Second operand 5 states. [2019-05-23 11:16:52,675 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:52,675 INFO L146 ILogger]: Finished difference Result 72 states and 77 transitions. [2019-05-23 11:16:52,677 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:16:52,677 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 27 [2019-05-23 11:16:52,678 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:52,680 INFO L146 ILogger]: With dead ends: 72 [2019-05-23 11:16:52,681 INFO L146 ILogger]: Without dead ends: 55 [2019-05-23 11:16:52,681 INFO L146 ILogger]: 0 DeclaredPredicates, 30 GetRequests, 27 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 11:16:52,684 INFO L146 ILogger]: Start minimizeSevpa. Operand 55 states. [2019-05-23 11:16:52,691 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 55 to 46. [2019-05-23 11:16:52,693 INFO L146 ILogger]: Start removeUnreachable. Operand 46 states. [2019-05-23 11:16:52,694 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2019-05-23 11:16:52,695 INFO L146 ILogger]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 27 [2019-05-23 11:16:52,695 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:52,696 INFO L146 ILogger]: Abstraction has 46 states and 49 transitions. [2019-05-23 11:16:52,696 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:16:52,696 INFO L146 ILogger]: Start isEmpty. Operand 46 states and 49 transitions. [2019-05-23 11:16:52,698 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:16:52,698 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,698 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:52,699 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,699 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,699 INFO L146 ILogger]: Analyzing trace with hash 40684417, now seen corresponding path program 2 times [2019-05-23 11:16:52,699 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,701 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,702 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,702 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,702 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,737 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,955 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:52,955 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:52,955 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 11:16:52,973 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:53,011 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:53,012 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,012 INFO L146 ILogger]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:16:53,015 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:53,044 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:53,067 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:53,067 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:16:53,067 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:16:53,068 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:16:53,068 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:16:53,068 INFO L146 ILogger]: Start difference. First operand 46 states and 49 transitions. Second operand 6 states. [2019-05-23 11:16:53,136 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,137 INFO L146 ILogger]: Finished difference Result 82 states and 88 transitions. [2019-05-23 11:16:53,137 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:16:53,137 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 34 [2019-05-23 11:16:53,138 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,139 INFO L146 ILogger]: With dead ends: 82 [2019-05-23 11:16:53,139 INFO L146 ILogger]: Without dead ends: 65 [2019-05-23 11:16:53,139 INFO L146 ILogger]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:16:53,140 INFO L146 ILogger]: Start minimizeSevpa. Operand 65 states. [2019-05-23 11:16:53,145 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 65 to 56. [2019-05-23 11:16:53,145 INFO L146 ILogger]: Start removeUnreachable. Operand 56 states. [2019-05-23 11:16:53,146 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2019-05-23 11:16:53,147 INFO L146 ILogger]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 34 [2019-05-23 11:16:53,147 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,147 INFO L146 ILogger]: Abstraction has 56 states and 60 transitions. [2019-05-23 11:16:53,147 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:16:53,147 INFO L146 ILogger]: Start isEmpty. Operand 56 states and 60 transitions. [2019-05-23 11:16:53,149 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:16:53,149 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,149 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:53,149 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,149 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,150 INFO L146 ILogger]: Analyzing trace with hash 888741164, now seen corresponding path program 3 times [2019-05-23 11:16:53,150 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,150 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,151 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,151 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:53,151 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,168 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,311 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:53,312 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:53,312 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:16:53,322 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:53,388 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:16:53,388 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,389 INFO L146 ILogger]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:16:53,391 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:53,456 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:53,483 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:53,483 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:16:53,483 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:16:53,484 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:16:53,484 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:16:53,484 INFO L146 ILogger]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2019-05-23 11:16:53,583 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,583 INFO L146 ILogger]: Finished difference Result 92 states and 99 transitions. [2019-05-23 11:16:53,584 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:16:53,584 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 41 [2019-05-23 11:16:53,584 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,585 INFO L146 ILogger]: With dead ends: 92 [2019-05-23 11:16:53,585 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:16:53,586 INFO L146 ILogger]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:16:53,586 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:16:53,591 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 66. [2019-05-23 11:16:53,591 INFO L146 ILogger]: Start removeUnreachable. Operand 66 states. [2019-05-23 11:16:53,592 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2019-05-23 11:16:53,593 INFO L146 ILogger]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 41 [2019-05-23 11:16:53,593 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,593 INFO L146 ILogger]: Abstraction has 66 states and 71 transitions. [2019-05-23 11:16:53,593 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:16:53,593 INFO L146 ILogger]: Start isEmpty. Operand 66 states and 71 transitions. [2019-05-23 11:16:53,595 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 49 [2019-05-23 11:16:53,595 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,595 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:53,595 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,596 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,596 INFO L146 ILogger]: Analyzing trace with hash -276257503, now seen corresponding path program 4 times [2019-05-23 11:16:53,596 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,596 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,597 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,597 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:53,597 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,611 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,703 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:53,703 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:53,703 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 11:16:53,720 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:53,749 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:53,749 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,750 INFO L146 ILogger]: Trace formula consists of 69 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:16:53,753 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:54,410 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:54,411 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2019-05-23 11:16:54,413 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:54,422 INFO L146 ILogger]: treesize reduction 13, result has 18.8 percent of original size [2019-05-23 11:16:54,423 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:54,423 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2019-05-23 11:16:54,556 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:16:54,586 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:54,586 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13] total 17 [2019-05-23 11:16:54,587 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:16:54,587 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:16:54,588 INFO L146 ILogger]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:16:54,592 INFO L146 ILogger]: Start difference. First operand 66 states and 71 transitions. Second operand 17 states. [2019-05-23 11:16:54,950 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2019-05-23 11:16:56,307 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:56,307 INFO L146 ILogger]: Finished difference Result 262 states and 285 transitions. [2019-05-23 11:16:56,308 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:16:56,308 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 48 [2019-05-23 11:16:56,308 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:56,311 INFO L146 ILogger]: With dead ends: 262 [2019-05-23 11:16:56,311 INFO L146 ILogger]: Without dead ends: 245 [2019-05-23 11:16:56,314 INFO L146 ILogger]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:16:56,314 INFO L146 ILogger]: Start minimizeSevpa. Operand 245 states. [2019-05-23 11:16:56,325 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 245 to 128. [2019-05-23 11:16:56,325 INFO L146 ILogger]: Start removeUnreachable. Operand 128 states. [2019-05-23 11:16:56,327 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2019-05-23 11:16:56,327 INFO L146 ILogger]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 48 [2019-05-23 11:16:56,327 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:56,327 INFO L146 ILogger]: Abstraction has 128 states and 139 transitions. [2019-05-23 11:16:56,328 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:16:56,328 INFO L146 ILogger]: Start isEmpty. Operand 128 states and 139 transitions. [2019-05-23 11:16:56,330 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 57 [2019-05-23 11:16:56,330 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:56,330 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:56,330 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:56,331 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:56,331 INFO L146 ILogger]: Analyzing trace with hash -375039700, now seen corresponding path program 1 times [2019-05-23 11:16:56,331 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:56,331 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:56,332 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,332 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:56,332 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,348 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,388 INFO L146 ILogger]: Checked inductivity of 67 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-05-23 11:16:56,388 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:56,388 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:56,389 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:56,389 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:56,390 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:56,390 INFO L146 ILogger]: Start difference. First operand 128 states and 139 transitions. Second operand 3 states. [2019-05-23 11:16:56,407 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:56,407 INFO L146 ILogger]: Finished difference Result 184 states and 199 transitions. [2019-05-23 11:16:56,407 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:56,407 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 56 [2019-05-23 11:16:56,407 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:56,408 INFO L146 ILogger]: With dead ends: 184 [2019-05-23 11:16:56,408 INFO L146 ILogger]: Without dead ends: 68 [2019-05-23 11:16:56,409 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 11:16:56,410 INFO L146 ILogger]: Start minimizeSevpa. Operand 68 states. [2019-05-23 11:16:56,415 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-05-23 11:16:56,416 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:16:56,417 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2019-05-23 11:16:56,417 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 56 [2019-05-23 11:16:56,417 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:56,417 INFO L146 ILogger]: Abstraction has 68 states and 69 transitions. [2019-05-23 11:16:56,417 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:56,418 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 69 transitions. [2019-05-23 11:16:56,419 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:16:56,420 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:56,420 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:56,420 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:56,420 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:56,421 INFO L146 ILogger]: Analyzing trace with hash -1038484844, now seen corresponding path program 1 times [2019-05-23 11:16:56,421 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:56,421 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:56,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,422 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:56,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,436 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,568 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:56,568 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:56,568 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 11:16:56,578 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:56,615 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,617 INFO L146 ILogger]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:16:56,622 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:56,739 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:56,768 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:56,769 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:16:56,769 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:16:56,769 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:16:56,770 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:56,770 INFO L146 ILogger]: Start difference. First operand 68 states and 69 transitions. Second operand 9 states. [2019-05-23 11:16:56,891 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:56,891 INFO L146 ILogger]: Finished difference Result 105 states and 107 transitions. [2019-05-23 11:16:56,891 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:16:56,891 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 67 [2019-05-23 11:16:56,892 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:56,893 INFO L146 ILogger]: With dead ends: 105 [2019-05-23 11:16:56,893 INFO L146 ILogger]: Without dead ends: 81 [2019-05-23 11:16:56,894 INFO L146 ILogger]: 0 DeclaredPredicates, 74 GetRequests, 67 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 11:16:56,894 INFO L146 ILogger]: Start minimizeSevpa. Operand 81 states. [2019-05-23 11:16:56,899 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 81 to 75. [2019-05-23 11:16:56,899 INFO L146 ILogger]: Start removeUnreachable. Operand 75 states. [2019-05-23 11:16:56,900 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2019-05-23 11:16:56,900 INFO L146 ILogger]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 67 [2019-05-23 11:16:56,900 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:56,901 INFO L146 ILogger]: Abstraction has 75 states and 76 transitions. [2019-05-23 11:16:56,902 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:16:56,902 INFO L146 ILogger]: Start isEmpty. Operand 75 states and 76 transitions. [2019-05-23 11:16:56,903 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:16:56,903 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:56,903 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:56,904 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:56,904 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:56,904 INFO L146 ILogger]: Analyzing trace with hash -229389751, now seen corresponding path program 2 times [2019-05-23 11:16:56,904 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:56,905 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:56,905 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,905 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:56,906 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,925 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,032 INFO L146 ILogger]: Checked inductivity of 118 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:57,032 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:57,032 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:16:57,043 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:57,066 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:57,067 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,067 INFO L146 ILogger]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:16:57,070 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:57,104 INFO L146 ILogger]: Checked inductivity of 118 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:57,122 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:57,123 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:16:57,123 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:16:57,123 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:16:57,124 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:16:57,124 INFO L146 ILogger]: Start difference. First operand 75 states and 76 transitions. Second operand 10 states. [2019-05-23 11:16:57,189 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:57,189 INFO L146 ILogger]: Finished difference Result 112 states and 114 transitions. [2019-05-23 11:16:57,194 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:16:57,194 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 74 [2019-05-23 11:16:57,195 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:57,196 INFO L146 ILogger]: With dead ends: 112 [2019-05-23 11:16:57,196 INFO L146 ILogger]: Without dead ends: 88 [2019-05-23 11:16:57,197 INFO L146 ILogger]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:16:57,197 INFO L146 ILogger]: Start minimizeSevpa. Operand 88 states. [2019-05-23 11:16:57,201 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 88 to 82. [2019-05-23 11:16:57,201 INFO L146 ILogger]: Start removeUnreachable. Operand 82 states. [2019-05-23 11:16:57,202 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2019-05-23 11:16:57,202 INFO L146 ILogger]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 74 [2019-05-23 11:16:57,203 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:57,203 INFO L146 ILogger]: Abstraction has 82 states and 83 transitions. [2019-05-23 11:16:57,203 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:16:57,203 INFO L146 ILogger]: Start isEmpty. Operand 82 states and 83 transitions. [2019-05-23 11:16:57,204 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:16:57,204 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:57,204 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:57,205 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:57,205 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:57,205 INFO L146 ILogger]: Analyzing trace with hash 1165481204, now seen corresponding path program 3 times [2019-05-23 11:16:57,205 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:57,205 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:57,206 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,206 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:57,206 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,219 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,365 INFO L146 ILogger]: Checked inductivity of 161 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:57,366 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:57,366 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 11:16:57,376 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:57,507 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:16:57,507 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,508 INFO L146 ILogger]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:16:57,512 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:57,634 INFO L146 ILogger]: Checked inductivity of 161 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:57,653 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:57,653 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:16:57,654 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:16:57,654 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:16:57,655 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:16:57,655 INFO L146 ILogger]: Start difference. First operand 82 states and 83 transitions. Second operand 11 states. [2019-05-23 11:16:57,736 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:57,737 INFO L146 ILogger]: Finished difference Result 119 states and 121 transitions. [2019-05-23 11:16:57,738 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:16:57,738 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 81 [2019-05-23 11:16:57,738 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:57,739 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:16:57,739 INFO L146 ILogger]: Without dead ends: 95 [2019-05-23 11:16:57,739 INFO L146 ILogger]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:16:57,739 INFO L146 ILogger]: Start minimizeSevpa. Operand 95 states. [2019-05-23 11:16:57,743 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 95 to 89. [2019-05-23 11:16:57,743 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:16:57,744 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2019-05-23 11:16:57,744 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 81 [2019-05-23 11:16:57,744 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:57,744 INFO L146 ILogger]: Abstraction has 89 states and 90 transitions. [2019-05-23 11:16:57,745 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:16:57,745 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 90 transitions. [2019-05-23 11:16:57,746 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:16:57,746 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:57,746 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:57,746 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:57,747 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:57,747 INFO L146 ILogger]: Analyzing trace with hash 285049833, now seen corresponding path program 4 times [2019-05-23 11:16:57,747 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:57,747 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:57,748 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,748 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:57,748 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,761 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,917 INFO L146 ILogger]: Checked inductivity of 211 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:57,917 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:57,917 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 11:16:57,929 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:57,950 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:57,951 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,952 INFO L146 ILogger]: Trace formula consists of 126 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:16:57,958 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:58,357 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:58,358 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:16:58,359 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:58,365 INFO L146 ILogger]: treesize reduction 17, result has 15.0 percent of original size [2019-05-23 11:16:58,365 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:58,366 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:16:58,475 INFO L146 ILogger]: Checked inductivity of 211 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2019-05-23 11:16:58,494 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:58,494 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16] total 24 [2019-05-23 11:16:58,494 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:16:58,495 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:16:58,496 INFO L146 ILogger]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:16:58,496 INFO L146 ILogger]: Start difference. First operand 89 states and 90 transitions. Second operand 24 states. [2019-05-23 11:16:59,642 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:59,642 INFO L146 ILogger]: Finished difference Result 148 states and 151 transitions. [2019-05-23 11:16:59,643 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:16:59,643 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 88 [2019-05-23 11:16:59,643 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:59,644 INFO L146 ILogger]: With dead ends: 148 [2019-05-23 11:16:59,644 INFO L146 ILogger]: Without dead ends: 124 [2019-05-23 11:16:59,646 INFO L146 ILogger]: 0 DeclaredPredicates, 120 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=357, Invalid=1713, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:16:59,646 INFO L146 ILogger]: Start minimizeSevpa. Operand 124 states. [2019-05-23 11:16:59,650 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 124 to 108. [2019-05-23 11:16:59,650 INFO L146 ILogger]: Start removeUnreachable. Operand 108 states. [2019-05-23 11:16:59,651 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2019-05-23 11:16:59,651 INFO L146 ILogger]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 88 [2019-05-23 11:16:59,652 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:59,652 INFO L146 ILogger]: Abstraction has 108 states and 109 transitions. [2019-05-23 11:16:59,652 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:16:59,652 INFO L146 ILogger]: Start isEmpty. Operand 108 states and 109 transitions. [2019-05-23 11:16:59,654 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 108 [2019-05-23 11:16:59,654 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:59,654 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:59,654 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:59,655 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:59,655 INFO L146 ILogger]: Analyzing trace with hash -494836132, now seen corresponding path program 5 times [2019-05-23 11:16:59,655 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:59,655 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:59,656 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,656 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:59,656 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,672 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,825 INFO L146 ILogger]: Checked inductivity of 287 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:16:59,825 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:59,825 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 11:16:59,833 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:59,865 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:16:59,865 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,866 INFO L146 ILogger]: Trace formula consists of 182 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:16:59,870 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:59,897 INFO L146 ILogger]: Checked inductivity of 287 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:16:59,926 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:59,926 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:16:59,927 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:16:59,927 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:16:59,927 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:59,928 INFO L146 ILogger]: Start difference. First operand 108 states and 109 transitions. Second operand 13 states. [2019-05-23 11:17:00,245 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:00,245 INFO L146 ILogger]: Finished difference Result 157 states and 159 transitions. [2019-05-23 11:17:00,245 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:17:00,246 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 107 [2019-05-23 11:17:00,246 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:00,247 INFO L146 ILogger]: With dead ends: 157 [2019-05-23 11:17:00,247 INFO L146 ILogger]: Without dead ends: 121 [2019-05-23 11:17:00,248 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:17:00,248 INFO L146 ILogger]: Start minimizeSevpa. Operand 121 states. [2019-05-23 11:17:00,251 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 121 to 115. [2019-05-23 11:17:00,252 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:17:00,252 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2019-05-23 11:17:00,252 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 107 [2019-05-23 11:17:00,253 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:00,253 INFO L146 ILogger]: Abstraction has 115 states and 116 transitions. [2019-05-23 11:17:00,253 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:17:00,253 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 116 transitions. [2019-05-23 11:17:00,254 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 115 [2019-05-23 11:17:00,254 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:00,254 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:00,255 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:00,255 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:00,255 INFO L146 ILogger]: Analyzing trace with hash -1782670063, now seen corresponding path program 6 times [2019-05-23 11:17:00,255 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:00,255 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:00,256 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:00,256 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:00,256 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:00,277 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,439 INFO L146 ILogger]: Checked inductivity of 351 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:17:00,440 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:00,440 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 11:17:00,448 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:00,506 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-05-23 11:17:00,506 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,508 INFO L146 ILogger]: Trace formula consists of 160 conjuncts, 39 conjunts are in the unsatisfiable core [2019-05-23 11:17:00,513 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:01,088 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:01,089 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2019-05-23 11:17:01,090 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:01,092 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:01,092 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:01,092 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2019-05-23 11:17:01,200 INFO L146 ILogger]: Checked inductivity of 351 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2019-05-23 11:17:01,218 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:01,219 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 32 [2019-05-23 11:17:01,219 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:17:01,219 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:17:01,220 INFO L146 ILogger]: CoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:17:01,220 INFO L146 ILogger]: Start difference. First operand 115 states and 116 transitions. Second operand 32 states. [2019-05-23 11:17:03,013 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:03,014 INFO L146 ILogger]: Finished difference Result 186 states and 189 transitions. [2019-05-23 11:17:03,017 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:17:03,017 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 114 [2019-05-23 11:17:03,017 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:03,018 INFO L146 ILogger]: With dead ends: 186 [2019-05-23 11:17:03,018 INFO L146 ILogger]: Without dead ends: 150 [2019-05-23 11:17:03,020 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=544, Invalid=2762, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:17:03,020 INFO L146 ILogger]: Start minimizeSevpa. Operand 150 states. [2019-05-23 11:17:03,024 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 150 to 134. [2019-05-23 11:17:03,024 INFO L146 ILogger]: Start removeUnreachable. Operand 134 states. [2019-05-23 11:17:03,025 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2019-05-23 11:17:03,025 INFO L146 ILogger]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 114 [2019-05-23 11:17:03,025 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:03,025 INFO L146 ILogger]: Abstraction has 134 states and 135 transitions. [2019-05-23 11:17:03,025 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:17:03,025 INFO L146 ILogger]: Start isEmpty. Operand 134 states and 135 transitions. [2019-05-23 11:17:03,026 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:17:03,027 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:03,027 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:03,027 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:03,027 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:03,027 INFO L146 ILogger]: Analyzing trace with hash 1714676676, now seen corresponding path program 7 times [2019-05-23 11:17:03,027 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:03,028 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:03,028 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,028 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:03,029 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,042 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:03,197 INFO L146 ILogger]: Checked inductivity of 453 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:03,197 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:03,197 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 11:17:03,208 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:03,240 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:03,241 INFO L146 ILogger]: Trace formula consists of 222 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:17:03,243 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:03,279 INFO L146 ILogger]: Checked inductivity of 453 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:03,304 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:03,304 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:17:03,304 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:17:03,305 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:17:03,305 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:17:03,305 INFO L146 ILogger]: Start difference. First operand 134 states and 135 transitions. Second operand 15 states. [2019-05-23 11:17:03,444 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:03,444 INFO L146 ILogger]: Finished difference Result 195 states and 197 transitions. [2019-05-23 11:17:03,453 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:17:03,453 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 133 [2019-05-23 11:17:03,453 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:03,454 INFO L146 ILogger]: With dead ends: 195 [2019-05-23 11:17:03,454 INFO L146 ILogger]: Without dead ends: 147 [2019-05-23 11:17:03,455 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:17:03,455 INFO L146 ILogger]: Start minimizeSevpa. Operand 147 states. [2019-05-23 11:17:03,459 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 147 to 141. [2019-05-23 11:17:03,459 INFO L146 ILogger]: Start removeUnreachable. Operand 141 states. [2019-05-23 11:17:03,460 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2019-05-23 11:17:03,460 INFO L146 ILogger]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 133 [2019-05-23 11:17:03,460 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:03,461 INFO L146 ILogger]: Abstraction has 141 states and 142 transitions. [2019-05-23 11:17:03,462 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:17:03,462 INFO L146 ILogger]: Start isEmpty. Operand 141 states and 142 transitions. [2019-05-23 11:17:03,464 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:17:03,464 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:03,464 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:03,464 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:03,464 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:03,465 INFO L146 ILogger]: Analyzing trace with hash -150310343, now seen corresponding path program 8 times [2019-05-23 11:17:03,465 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:03,465 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:03,467 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,467 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:03,468 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,486 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:03,819 INFO L146 ILogger]: Checked inductivity of 531 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:03,819 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:03,819 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 11:17:03,827 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:03,871 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:03,871 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:03,872 INFO L146 ILogger]: Trace formula consists of 233 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:17:03,874 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:03,951 INFO L146 ILogger]: Checked inductivity of 531 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:03,981 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:03,981 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:17:03,982 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:17:03,982 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:17:03,982 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:17:03,982 INFO L146 ILogger]: Start difference. First operand 141 states and 142 transitions. Second operand 16 states. [2019-05-23 11:17:04,134 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:04,134 INFO L146 ILogger]: Finished difference Result 202 states and 204 transitions. [2019-05-23 11:17:04,137 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:17:04,138 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 140 [2019-05-23 11:17:04,138 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:04,138 INFO L146 ILogger]: With dead ends: 202 [2019-05-23 11:17:04,139 INFO L146 ILogger]: Without dead ends: 154 [2019-05-23 11:17:04,139 INFO L146 ILogger]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:17:04,140 INFO L146 ILogger]: Start minimizeSevpa. Operand 154 states. [2019-05-23 11:17:04,143 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 154 to 148. [2019-05-23 11:17:04,143 INFO L146 ILogger]: Start removeUnreachable. Operand 148 states. [2019-05-23 11:17:04,144 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2019-05-23 11:17:04,144 INFO L146 ILogger]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 140 [2019-05-23 11:17:04,144 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:04,145 INFO L146 ILogger]: Abstraction has 148 states and 149 transitions. [2019-05-23 11:17:04,145 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:17:04,145 INFO L146 ILogger]: Start isEmpty. Operand 148 states and 149 transitions. [2019-05-23 11:17:04,146 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 148 [2019-05-23 11:17:04,146 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:04,146 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:04,147 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:04,147 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:04,147 INFO L146 ILogger]: Analyzing trace with hash 1245816356, now seen corresponding path program 9 times [2019-05-23 11:17:04,147 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:04,147 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:04,148 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,148 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:04,148 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,161 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,828 INFO L146 ILogger]: Checked inductivity of 616 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:04,829 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:04,829 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 11:17:04,840 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:04,891 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2019-05-23 11:17:04,891 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,892 INFO L146 ILogger]: Trace formula consists of 244 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:17:04,894 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:04,923 INFO L146 ILogger]: Checked inductivity of 616 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:04,943 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:04,943 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:17:04,943 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:17:04,944 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:17:04,944 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:17:04,944 INFO L146 ILogger]: Start difference. First operand 148 states and 149 transitions. Second operand 17 states. [2019-05-23 11:17:05,062 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:05,062 INFO L146 ILogger]: Finished difference Result 209 states and 211 transitions. [2019-05-23 11:17:05,070 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:17:05,070 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 147 [2019-05-23 11:17:05,070 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:05,071 INFO L146 ILogger]: With dead ends: 209 [2019-05-23 11:17:05,071 INFO L146 ILogger]: Without dead ends: 161 [2019-05-23 11:17:05,072 INFO L146 ILogger]: 0 DeclaredPredicates, 162 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:17:05,072 INFO L146 ILogger]: Start minimizeSevpa. Operand 161 states. [2019-05-23 11:17:05,076 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 161 to 155. [2019-05-23 11:17:05,076 INFO L146 ILogger]: Start removeUnreachable. Operand 155 states. [2019-05-23 11:17:05,077 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2019-05-23 11:17:05,077 INFO L146 ILogger]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 147 [2019-05-23 11:17:05,078 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:05,078 INFO L146 ILogger]: Abstraction has 155 states and 156 transitions. [2019-05-23 11:17:05,078 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:17:05,078 INFO L146 ILogger]: Start isEmpty. Operand 155 states and 156 transitions. [2019-05-23 11:17:05,079 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 155 [2019-05-23 11:17:05,079 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:05,080 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:05,080 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:05,080 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:05,080 INFO L146 ILogger]: Analyzing trace with hash 1926185945, now seen corresponding path program 10 times [2019-05-23 11:17:05,080 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:05,081 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:05,081 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:05,082 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:05,082 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:05,102 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:05,353 INFO L146 ILogger]: Checked inductivity of 708 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:05,353 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:05,354 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 11:17:05,362 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:05,407 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:05,407 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:05,408 INFO L146 ILogger]: Trace formula consists of 220 conjuncts, 41 conjunts are in the unsatisfiable core [2019-05-23 11:17:05,411 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:05,842 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:05,843 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:17:05,844 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:05,857 INFO L146 ILogger]: treesize reduction 17, result has 15.0 percent of original size [2019-05-23 11:17:05,858 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:05,858 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:17:06,133 INFO L146 ILogger]: Checked inductivity of 708 backedges. 0 proven. 353 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2019-05-23 11:17:06,152 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:06,152 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22] total 36 [2019-05-23 11:17:06,152 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:17:06,153 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:17:06,153 INFO L146 ILogger]: CoverageRelationStatistics Valid=249, Invalid=1011, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:17:06,153 INFO L146 ILogger]: Start difference. First operand 155 states and 156 transitions. Second operand 36 states. [2019-05-23 11:17:08,187 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:08,187 INFO L146 ILogger]: Finished difference Result 238 states and 241 transitions. [2019-05-23 11:17:08,188 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-05-23 11:17:08,188 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 154 [2019-05-23 11:17:08,188 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:08,189 INFO L146 ILogger]: With dead ends: 238 [2019-05-23 11:17:08,190 INFO L146 ILogger]: Without dead ends: 190 [2019-05-23 11:17:08,191 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=649, Invalid=3907, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:17:08,192 INFO L146 ILogger]: Start minimizeSevpa. Operand 190 states. [2019-05-23 11:17:08,196 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 190 to 174. [2019-05-23 11:17:08,196 INFO L146 ILogger]: Start removeUnreachable. Operand 174 states. [2019-05-23 11:17:08,197 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2019-05-23 11:17:08,197 INFO L146 ILogger]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 154 [2019-05-23 11:17:08,197 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:08,197 INFO L146 ILogger]: Abstraction has 174 states and 175 transitions. [2019-05-23 11:17:08,197 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:17:08,197 INFO L146 ILogger]: Start isEmpty. Operand 174 states and 175 transitions. [2019-05-23 11:17:08,198 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 174 [2019-05-23 11:17:08,198 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:08,199 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:08,199 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:08,199 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:08,199 INFO L146 ILogger]: Analyzing trace with hash -37169268, now seen corresponding path program 11 times [2019-05-23 11:17:08,199 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:08,200 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:08,200 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:08,200 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:08,200 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:08,212 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:08,962 INFO L146 ILogger]: Checked inductivity of 850 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:17:08,963 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:08,963 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 11:17:08,972 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:09,027 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2019-05-23 11:17:09,027 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:09,029 INFO L146 ILogger]: Trace formula consists of 284 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:17:09,032 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:09,069 INFO L146 ILogger]: Checked inductivity of 850 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:17:09,088 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:09,088 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:17:09,088 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:17:09,089 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:17:09,089 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:17:09,089 INFO L146 ILogger]: Start difference. First operand 174 states and 175 transitions. Second operand 19 states. [2019-05-23 11:17:09,215 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:09,215 INFO L146 ILogger]: Finished difference Result 247 states and 249 transitions. [2019-05-23 11:17:09,215 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:17:09,216 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 173 [2019-05-23 11:17:09,216 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:09,217 INFO L146 ILogger]: With dead ends: 247 [2019-05-23 11:17:09,217 INFO L146 ILogger]: Without dead ends: 187 [2019-05-23 11:17:09,217 INFO L146 ILogger]: 0 DeclaredPredicates, 190 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:17:09,217 INFO L146 ILogger]: Start minimizeSevpa. Operand 187 states. [2019-05-23 11:17:09,221 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 187 to 181. [2019-05-23 11:17:09,222 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:17:09,222 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2019-05-23 11:17:09,222 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 173 [2019-05-23 11:17:09,223 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:09,223 INFO L146 ILogger]: Abstraction has 181 states and 182 transitions. [2019-05-23 11:17:09,223 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:17:09,223 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 182 transitions. [2019-05-23 11:17:09,224 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:17:09,224 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:09,224 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:09,225 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:09,225 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:09,225 INFO L146 ILogger]: Analyzing trace with hash -1649603327, now seen corresponding path program 12 times [2019-05-23 11:17:09,225 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:09,225 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:09,226 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:09,226 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:09,226 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:09,240 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:09,691 INFO L146 ILogger]: Checked inductivity of 956 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:17:09,692 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:09,692 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 11:17:09,700 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:09,777 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2019-05-23 11:17:09,777 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:09,779 INFO L146 ILogger]: Trace formula consists of 273 conjuncts, 51 conjunts are in the unsatisfiable core [2019-05-23 11:17:09,783 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:10,673 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:10,674 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2019-05-23 11:17:10,674 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:10,679 INFO L146 ILogger]: treesize reduction 9, result has 25.0 percent of original size [2019-05-23 11:17:10,679 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:10,679 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2019-05-23 11:17:10,886 INFO L146 ILogger]: Checked inductivity of 956 backedges. 0 proven. 527 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2019-05-23 11:17:10,905 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:10,905 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 27] total 44 [2019-05-23 11:17:10,905 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:17:10,906 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:17:10,907 INFO L146 ILogger]: CoverageRelationStatistics Valid=377, Invalid=1515, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:17:10,907 INFO L146 ILogger]: Start difference. First operand 181 states and 182 transitions. Second operand 44 states. [2019-05-23 11:17:13,654 WARN L146 ILogger]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-05-23 11:17:14,078 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:14,078 INFO L146 ILogger]: Finished difference Result 276 states and 279 transitions. [2019-05-23 11:17:14,078 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:17:14,079 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 180 [2019-05-23 11:17:14,079 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:14,080 INFO L146 ILogger]: With dead ends: 276 [2019-05-23 11:17:14,080 INFO L146 ILogger]: Without dead ends: 216 [2019-05-23 11:17:14,082 INFO L146 ILogger]: 0 DeclaredPredicates, 234 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=902, Invalid=5418, Unknown=0, NotChecked=0, Total=6320 [2019-05-23 11:17:14,083 INFO L146 ILogger]: Start minimizeSevpa. Operand 216 states. [2019-05-23 11:17:14,087 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 216 to 200. [2019-05-23 11:17:14,088 INFO L146 ILogger]: Start removeUnreachable. Operand 200 states. [2019-05-23 11:17:14,088 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2019-05-23 11:17:14,089 INFO L146 ILogger]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 180 [2019-05-23 11:17:14,089 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:14,089 INFO L146 ILogger]: Abstraction has 200 states and 201 transitions. [2019-05-23 11:17:14,089 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:17:14,089 INFO L146 ILogger]: Start isEmpty. Operand 200 states and 201 transitions. [2019-05-23 11:17:14,090 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 200 [2019-05-23 11:17:14,090 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:14,090 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:14,091 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:14,091 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:14,091 INFO L146 ILogger]: Analyzing trace with hash 1165423860, now seen corresponding path program 13 times [2019-05-23 11:17:14,091 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:14,091 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:14,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,092 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:14,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,106 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,333 INFO L146 ILogger]: Checked inductivity of 1124 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:14,333 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:14,333 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 11:17:14,343 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:14,389 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,390 INFO L146 ILogger]: Trace formula consists of 324 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:17:14,392 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:14,447 INFO L146 ILogger]: Checked inductivity of 1124 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:14,466 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:14,466 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:17:14,466 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:17:14,467 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:17:14,467 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:17:14,467 INFO L146 ILogger]: Start difference. First operand 200 states and 201 transitions. Second operand 21 states. [2019-05-23 11:17:14,809 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:14,809 INFO L146 ILogger]: Finished difference Result 285 states and 287 transitions. [2019-05-23 11:17:14,810 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:17:14,810 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 199 [2019-05-23 11:17:14,811 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:14,811 INFO L146 ILogger]: With dead ends: 285 [2019-05-23 11:17:14,811 INFO L146 ILogger]: Without dead ends: 213 [2019-05-23 11:17:14,812 INFO L146 ILogger]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:17:14,812 INFO L146 ILogger]: Start minimizeSevpa. Operand 213 states. [2019-05-23 11:17:14,816 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 213 to 207. [2019-05-23 11:17:14,816 INFO L146 ILogger]: Start removeUnreachable. Operand 207 states. [2019-05-23 11:17:14,816 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2019-05-23 11:17:14,817 INFO L146 ILogger]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 199 [2019-05-23 11:17:14,817 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:14,817 INFO L146 ILogger]: Abstraction has 207 states and 208 transitions. [2019-05-23 11:17:14,817 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:17:14,817 INFO L146 ILogger]: Start isEmpty. Operand 207 states and 208 transitions. [2019-05-23 11:17:14,818 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 207 [2019-05-23 11:17:14,818 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:14,818 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:14,819 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:14,819 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:14,819 INFO L146 ILogger]: Analyzing trace with hash 182424105, now seen corresponding path program 14 times [2019-05-23 11:17:14,819 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:14,819 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:14,820 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,820 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:14,820 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,834 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:15,073 INFO L146 ILogger]: Checked inductivity of 1244 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:15,074 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:15,074 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 11:17:15,082 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:15,133 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:15,133 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:15,134 INFO L146 ILogger]: Trace formula consists of 335 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:17:15,136 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:15,192 INFO L146 ILogger]: Checked inductivity of 1244 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:15,212 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:15,212 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:17:15,212 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:17:15,213 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:17:15,213 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:17:15,213 INFO L146 ILogger]: Start difference. First operand 207 states and 208 transitions. Second operand 22 states. [2019-05-23 11:17:15,623 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:15,624 INFO L146 ILogger]: Finished difference Result 292 states and 294 transitions. [2019-05-23 11:17:15,625 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:17:15,625 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 206 [2019-05-23 11:17:15,625 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:15,626 INFO L146 ILogger]: With dead ends: 292 [2019-05-23 11:17:15,627 INFO L146 ILogger]: Without dead ends: 220 [2019-05-23 11:17:15,627 INFO L146 ILogger]: 0 DeclaredPredicates, 226 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:17:15,628 INFO L146 ILogger]: Start minimizeSevpa. Operand 220 states. [2019-05-23 11:17:15,633 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 220 to 214. [2019-05-23 11:17:15,633 INFO L146 ILogger]: Start removeUnreachable. Operand 214 states. [2019-05-23 11:17:15,634 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2019-05-23 11:17:15,634 INFO L146 ILogger]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 206 [2019-05-23 11:17:15,634 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:15,635 INFO L146 ILogger]: Abstraction has 214 states and 215 transitions. [2019-05-23 11:17:15,635 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:17:15,635 INFO L146 ILogger]: Start isEmpty. Operand 214 states and 215 transitions. [2019-05-23 11:17:15,636 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 214 [2019-05-23 11:17:15,636 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:15,636 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:15,636 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:15,637 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:15,637 INFO L146 ILogger]: Analyzing trace with hash 2056953684, now seen corresponding path program 15 times [2019-05-23 11:17:15,637 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:15,637 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:15,638 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:15,638 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:15,638 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:15,653 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:16,517 INFO L146 ILogger]: Checked inductivity of 1371 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:16,518 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:16,518 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 11:17:16,531 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:16,609 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2019-05-23 11:17:16,609 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:16,611 INFO L146 ILogger]: Trace formula consists of 346 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:17:16,613 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:16,660 INFO L146 ILogger]: Checked inductivity of 1371 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:16,678 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:16,678 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:17:16,679 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:17:16,679 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:17:16,679 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:17:16,679 INFO L146 ILogger]: Start difference. First operand 214 states and 215 transitions. Second operand 23 states. [2019-05-23 11:17:16,984 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:16,985 INFO L146 ILogger]: Finished difference Result 299 states and 301 transitions. [2019-05-23 11:17:16,988 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:17:16,988 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 213 [2019-05-23 11:17:16,989 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:16,990 INFO L146 ILogger]: With dead ends: 299 [2019-05-23 11:17:16,990 INFO L146 ILogger]: Without dead ends: 227 [2019-05-23 11:17:16,991 INFO L146 ILogger]: 0 DeclaredPredicates, 234 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:17:16,991 INFO L146 ILogger]: Start minimizeSevpa. Operand 227 states. [2019-05-23 11:17:16,999 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 227 to 221. [2019-05-23 11:17:16,999 INFO L146 ILogger]: Start removeUnreachable. Operand 221 states. [2019-05-23 11:17:17,000 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2019-05-23 11:17:17,001 INFO L146 ILogger]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 213 [2019-05-23 11:17:17,001 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:17,001 INFO L146 ILogger]: Abstraction has 221 states and 222 transitions. [2019-05-23 11:17:17,002 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:17:17,002 INFO L146 ILogger]: Start isEmpty. Operand 221 states and 222 transitions. [2019-05-23 11:17:17,004 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 221 [2019-05-23 11:17:17,004 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:17,004 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:17,005 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:17,005 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:17,005 INFO L146 ILogger]: Analyzing trace with hash -728138807, now seen corresponding path program 16 times [2019-05-23 11:17:17,005 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:17,006 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:17,007 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:17,007 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:17,008 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:17,032 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:17,570 INFO L146 ILogger]: Checked inductivity of 1505 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:17,571 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:17,571 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:17,579 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:17,624 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:17,624 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:17,626 INFO L146 ILogger]: Trace formula consists of 314 conjuncts, 53 conjunts are in the unsatisfiable core [2019-05-23 11:17:17,629 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:19,221 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:19,222 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:17:19,222 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:19,224 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:19,224 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:19,225 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:17:19,454 INFO L146 ILogger]: Checked inductivity of 1505 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2019-05-23 11:17:19,472 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:19,472 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 28] total 48 [2019-05-23 11:17:19,473 INFO L146 ILogger]: Interpolant automaton has 48 states [2019-05-23 11:17:19,473 INFO L146 ILogger]: Constructing interpolant automaton starting with 48 interpolants. [2019-05-23 11:17:19,474 INFO L146 ILogger]: CoverageRelationStatistics Valid=443, Invalid=1813, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:17:19,474 INFO L146 ILogger]: Start difference. First operand 221 states and 222 transitions. Second operand 48 states. [2019-05-23 11:17:23,927 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:23,928 INFO L146 ILogger]: Finished difference Result 328 states and 331 transitions. [2019-05-23 11:17:23,928 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-05-23 11:17:23,928 INFO L146 ILogger]: Start accepts. Automaton has 48 states. Word has length 220 [2019-05-23 11:17:23,928 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:23,930 INFO L146 ILogger]: With dead ends: 328 [2019-05-23 11:17:23,930 INFO L146 ILogger]: Without dead ends: 256 [2019-05-23 11:17:23,932 INFO L146 ILogger]: 0 DeclaredPredicates, 284 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1966 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1029, Invalid=6981, Unknown=0, NotChecked=0, Total=8010 [2019-05-23 11:17:23,933 INFO L146 ILogger]: Start minimizeSevpa. Operand 256 states. [2019-05-23 11:17:23,938 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 256 to 240. [2019-05-23 11:17:23,938 INFO L146 ILogger]: Start removeUnreachable. Operand 240 states. [2019-05-23 11:17:23,939 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2019-05-23 11:17:23,939 INFO L146 ILogger]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 220 [2019-05-23 11:17:23,940 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:23,940 INFO L146 ILogger]: Abstraction has 240 states and 241 transitions. [2019-05-23 11:17:23,940 INFO L146 ILogger]: Interpolant automaton has 48 states. [2019-05-23 11:17:23,940 INFO L146 ILogger]: Start isEmpty. Operand 240 states and 241 transitions. [2019-05-23 11:17:23,941 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 240 [2019-05-23 11:17:23,941 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:23,941 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:23,942 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:23,942 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:23,942 INFO L146 ILogger]: Analyzing trace with hash 2080993468, now seen corresponding path program 17 times [2019-05-23 11:17:23,942 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:23,942 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:23,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:23,943 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:23,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:23,960 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:24,591 INFO L146 ILogger]: Checked inductivity of 1713 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:17:24,592 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:24,592 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:24,602 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:24,927 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2019-05-23 11:17:24,927 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:24,929 INFO L146 ILogger]: Trace formula consists of 386 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:17:24,932 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:25,076 INFO L146 ILogger]: Checked inductivity of 1713 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:17:25,095 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:25,095 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-05-23 11:17:25,095 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:17:25,096 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:17:25,096 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:17:25,096 INFO L146 ILogger]: Start difference. First operand 240 states and 241 transitions. Second operand 25 states. [2019-05-23 11:17:25,448 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:25,449 INFO L146 ILogger]: Finished difference Result 337 states and 339 transitions. [2019-05-23 11:17:25,451 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:17:25,451 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 239 [2019-05-23 11:17:25,451 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:25,453 INFO L146 ILogger]: With dead ends: 337 [2019-05-23 11:17:25,453 INFO L146 ILogger]: Without dead ends: 253 [2019-05-23 11:17:25,453 INFO L146 ILogger]: 0 DeclaredPredicates, 262 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:17:25,454 INFO L146 ILogger]: Start minimizeSevpa. Operand 253 states. [2019-05-23 11:17:25,460 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 253 to 247. [2019-05-23 11:17:25,460 INFO L146 ILogger]: Start removeUnreachable. Operand 247 states. [2019-05-23 11:17:25,461 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2019-05-23 11:17:25,461 INFO L146 ILogger]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 239 [2019-05-23 11:17:25,461 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:25,461 INFO L146 ILogger]: Abstraction has 247 states and 248 transitions. [2019-05-23 11:17:25,461 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:17:25,461 INFO L146 ILogger]: Start isEmpty. Operand 247 states and 248 transitions. [2019-05-23 11:17:25,463 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 247 [2019-05-23 11:17:25,463 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:25,463 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:25,463 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:25,463 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:25,464 INFO L146 ILogger]: Analyzing trace with hash 284816625, now seen corresponding path program 18 times [2019-05-23 11:17:25,464 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:25,464 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:25,465 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:25,465 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:25,465 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:25,482 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:25,970 INFO L146 ILogger]: Checked inductivity of 1861 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:17:25,970 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:25,970 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:25,979 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:26,060 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2019-05-23 11:17:26,060 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:26,062 INFO L146 ILogger]: Trace formula consists of 342 conjuncts, 63 conjunts are in the unsatisfiable core [2019-05-23 11:17:26,066 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:27,244 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:27,244 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2019-05-23 11:17:27,245 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:27,246 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:27,246 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:27,246 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2019-05-23 11:17:27,572 INFO L146 ILogger]: Checked inductivity of 1861 backedges. 0 proven. 1066 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2019-05-23 11:17:27,591 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:27,591 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33] total 56 [2019-05-23 11:17:27,591 INFO L146 ILogger]: Interpolant automaton has 56 states [2019-05-23 11:17:27,592 INFO L146 ILogger]: Constructing interpolant automaton starting with 56 interpolants. [2019-05-23 11:17:27,593 INFO L146 ILogger]: CoverageRelationStatistics Valid=609, Invalid=2471, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:17:27,593 INFO L146 ILogger]: Start difference. First operand 247 states and 248 transitions. Second operand 56 states. [2019-05-23 11:17:31,251 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:31,252 INFO L146 ILogger]: Finished difference Result 366 states and 369 transitions. [2019-05-23 11:17:31,253 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:17:31,253 INFO L146 ILogger]: Start accepts. Automaton has 56 states. Word has length 246 [2019-05-23 11:17:31,253 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:31,254 INFO L146 ILogger]: With dead ends: 366 [2019-05-23 11:17:31,254 INFO L146 ILogger]: Without dead ends: 282 [2019-05-23 11:17:31,258 INFO L146 ILogger]: 0 DeclaredPredicates, 316 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2588 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1348, Invalid=8954, Unknown=0, NotChecked=0, Total=10302 [2019-05-23 11:17:31,258 INFO L146 ILogger]: Start minimizeSevpa. Operand 282 states. [2019-05-23 11:17:31,264 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 282 to 266. [2019-05-23 11:17:31,264 INFO L146 ILogger]: Start removeUnreachable. Operand 266 states. [2019-05-23 11:17:31,265 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 266 states to 266 states and 267 transitions. [2019-05-23 11:17:31,265 INFO L146 ILogger]: Start accepts. Automaton has 266 states and 267 transitions. Word has length 246 [2019-05-23 11:17:31,265 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:31,266 INFO L146 ILogger]: Abstraction has 266 states and 267 transitions. [2019-05-23 11:17:31,266 INFO L146 ILogger]: Interpolant automaton has 56 states. [2019-05-23 11:17:31,266 INFO L146 ILogger]: Start isEmpty. Operand 266 states and 267 transitions. [2019-05-23 11:17:31,267 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 266 [2019-05-23 11:17:31,267 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:31,267 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:31,268 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:31,268 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:31,268 INFO L146 ILogger]: Analyzing trace with hash -56807900, now seen corresponding path program 19 times [2019-05-23 11:17:31,268 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:31,268 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:31,269 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:31,269 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:31,269 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:31,286 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:32,074 INFO L146 ILogger]: Checked inductivity of 2095 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-05-23 11:17:32,075 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:32,075 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:32,083 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:32,142 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:32,144 INFO L146 ILogger]: Trace formula consists of 426 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:17:32,146 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:32,240 INFO L146 ILogger]: Checked inductivity of 2095 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-05-23 11:17:32,259 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:32,259 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:17:32,259 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:17:32,259 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:17:32,260 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:17:32,260 INFO L146 ILogger]: Start difference. First operand 266 states and 267 transitions. Second operand 27 states. [2019-05-23 11:17:32,429 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:32,429 INFO L146 ILogger]: Finished difference Result 375 states and 377 transitions. [2019-05-23 11:17:32,430 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:17:32,430 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 265 [2019-05-23 11:17:32,430 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:32,431 INFO L146 ILogger]: With dead ends: 375 [2019-05-23 11:17:32,431 INFO L146 ILogger]: Without dead ends: 279 [2019-05-23 11:17:32,433 INFO L146 ILogger]: 0 DeclaredPredicates, 290 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:17:32,433 INFO L146 ILogger]: Start minimizeSevpa. Operand 279 states. [2019-05-23 11:17:32,439 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 279 to 273. [2019-05-23 11:17:32,440 INFO L146 ILogger]: Start removeUnreachable. Operand 273 states. [2019-05-23 11:17:32,440 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2019-05-23 11:17:32,440 INFO L146 ILogger]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 265 [2019-05-23 11:17:32,441 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:32,441 INFO L146 ILogger]: Abstraction has 273 states and 274 transitions. [2019-05-23 11:17:32,441 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:17:32,441 INFO L146 ILogger]: Start isEmpty. Operand 273 states and 274 transitions. [2019-05-23 11:17:32,442 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 273 [2019-05-23 11:17:32,442 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:32,443 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:32,443 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:32,443 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:32,443 INFO L146 ILogger]: Analyzing trace with hash -268883431, now seen corresponding path program 20 times [2019-05-23 11:17:32,443 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:32,443 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:32,444 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:32,444 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:32,444 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:32,462 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:33,040 INFO L146 ILogger]: Checked inductivity of 2257 backedges. 0 proven. 1956 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-05-23 11:17:33,040 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:33,040 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:33,051 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:33,113 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:33,114 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:33,115 INFO L146 ILogger]: Trace formula consists of 437 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:17:33,117 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:33,184 INFO L146 ILogger]: Checked inductivity of 2257 backedges. 0 proven. 1956 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-05-23 11:17:33,215 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:33,215 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2019-05-23 11:17:33,216 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:17:33,216 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:17:33,217 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:17:33,217 INFO L146 ILogger]: Start difference. First operand 273 states and 274 transitions. Second operand 28 states. [2019-05-23 11:17:33,426 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:33,426 INFO L146 ILogger]: Finished difference Result 382 states and 384 transitions. [2019-05-23 11:17:33,427 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:17:33,427 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 272 [2019-05-23 11:17:33,427 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:33,428 INFO L146 ILogger]: With dead ends: 382 [2019-05-23 11:17:33,429 INFO L146 ILogger]: Without dead ends: 286 [2019-05-23 11:17:33,429 INFO L146 ILogger]: 0 DeclaredPredicates, 298 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:17:33,431 INFO L146 ILogger]: Start minimizeSevpa. Operand 286 states. [2019-05-23 11:17:33,438 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 286 to 280. [2019-05-23 11:17:33,438 INFO L146 ILogger]: Start removeUnreachable. Operand 280 states. [2019-05-23 11:17:33,439 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2019-05-23 11:17:33,439 INFO L146 ILogger]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 272 [2019-05-23 11:17:33,439 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:33,439 INFO L146 ILogger]: Abstraction has 280 states and 281 transitions. [2019-05-23 11:17:33,439 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:17:33,439 INFO L146 ILogger]: Start isEmpty. Operand 280 states and 281 transitions. [2019-05-23 11:17:33,441 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 280 [2019-05-23 11:17:33,441 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:33,441 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:33,441 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:33,442 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:33,442 INFO L146 ILogger]: Analyzing trace with hash -1044594556, now seen corresponding path program 21 times [2019-05-23 11:17:33,442 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:33,442 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:33,443 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:33,443 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:33,443 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:33,463 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:35,658 INFO L146 ILogger]: Checked inductivity of 2426 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-05-23 11:17:35,659 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:35,659 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:35,668 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:35,785 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2019-05-23 11:17:35,785 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:35,788 INFO L146 ILogger]: Trace formula consists of 448 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:17:35,791 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:35,943 INFO L146 ILogger]: Checked inductivity of 2426 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-05-23 11:17:35,962 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:35,962 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-05-23 11:17:35,963 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:17:35,963 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:17:35,963 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:17:35,963 INFO L146 ILogger]: Start difference. First operand 280 states and 281 transitions. Second operand 29 states. [2019-05-23 11:17:36,183 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:36,183 INFO L146 ILogger]: Finished difference Result 389 states and 391 transitions. [2019-05-23 11:17:36,184 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:17:36,184 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 279 [2019-05-23 11:17:36,184 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:36,186 INFO L146 ILogger]: With dead ends: 389 [2019-05-23 11:17:36,186 INFO L146 ILogger]: Without dead ends: 293 [2019-05-23 11:17:36,187 INFO L146 ILogger]: 0 DeclaredPredicates, 306 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:17:36,187 INFO L146 ILogger]: Start minimizeSevpa. Operand 293 states. [2019-05-23 11:17:36,193 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 293 to 287. [2019-05-23 11:17:36,193 INFO L146 ILogger]: Start removeUnreachable. Operand 287 states. [2019-05-23 11:17:36,194 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2019-05-23 11:17:36,194 INFO L146 ILogger]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 279 [2019-05-23 11:17:36,195 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:36,195 INFO L146 ILogger]: Abstraction has 287 states and 288 transitions. [2019-05-23 11:17:36,195 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:17:36,195 INFO L146 ILogger]: Start isEmpty. Operand 287 states and 288 transitions. [2019-05-23 11:17:36,196 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 287 [2019-05-23 11:17:36,196 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:36,197 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 26, 26, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:36,197 INFO L146 ILogger]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:36,197 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:36,197 INFO L146 ILogger]: Analyzing trace with hash 1510091705, now seen corresponding path program 22 times [2019-05-23 11:17:36,197 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:36,197 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:36,198 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:36,198 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:36,198 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:36,216 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:37,090 INFO L146 ILogger]: Checked inductivity of 2602 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-05-23 11:17:37,091 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:37,091 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:37,099 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:37,157 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:37,157 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:37,159 INFO L146 ILogger]: Trace formula consists of 408 conjuncts, 65 conjunts are in the unsatisfiable core [2019-05-23 11:17:37,162 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:37,946 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:37,946 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:17:37,947 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:37,948 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:37,948 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:37,949 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:17:38,316 INFO L146 ILogger]: Checked inductivity of 2602 backedges. 0 proven. 1459 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2019-05-23 11:17:38,335 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:38,336 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 34] total 60 [2019-05-23 11:17:38,336 INFO L146 ILogger]: Interpolant automaton has 60 states [2019-05-23 11:17:38,336 INFO L146 ILogger]: Constructing interpolant automaton starting with 60 interpolants. [2019-05-23 11:17:38,337 INFO L146 ILogger]: CoverageRelationStatistics Valid=693, Invalid=2847, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:17:38,337 INFO L146 ILogger]: Start difference. First operand 287 states and 288 transitions. Second operand 60 states. [2019-05-23 11:17:43,045 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:43,045 INFO L146 ILogger]: Finished difference Result 418 states and 421 transitions. [2019-05-23 11:17:43,045 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2019-05-23 11:17:43,045 INFO L146 ILogger]: Start accepts. Automaton has 60 states. Word has length 286 [2019-05-23 11:17:43,046 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:43,048 INFO L146 ILogger]: With dead ends: 418 [2019-05-23 11:17:43,048 INFO L146 ILogger]: Without dead ends: 322 [2019-05-23 11:17:43,050 INFO L146 ILogger]: 0 DeclaredPredicates, 366 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3099 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1497, Invalid=10935, Unknown=0, NotChecked=0, Total=12432 [2019-05-23 11:17:43,050 INFO L146 ILogger]: Start minimizeSevpa. Operand 322 states. [2019-05-23 11:17:43,057 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 322 to 306. [2019-05-23 11:17:43,058 INFO L146 ILogger]: Start removeUnreachable. Operand 306 states. [2019-05-23 11:17:43,058 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 306 states to 306 states and 307 transitions. [2019-05-23 11:17:43,058 INFO L146 ILogger]: Start accepts. Automaton has 306 states and 307 transitions. Word has length 286 [2019-05-23 11:17:43,059 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:43,059 INFO L146 ILogger]: Abstraction has 306 states and 307 transitions. [2019-05-23 11:17:43,059 INFO L146 ILogger]: Interpolant automaton has 60 states. [2019-05-23 11:17:43,059 INFO L146 ILogger]: Start isEmpty. Operand 306 states and 307 transitions. [2019-05-23 11:17:43,061 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 306 [2019-05-23 11:17:43,061 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:43,061 INFO L146 ILogger]: trace histogram [27, 27, 27, 27, 27, 27, 27, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:43,062 INFO L146 ILogger]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:43,062 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:43,062 INFO L146 ILogger]: Analyzing trace with hash 1878864364, now seen corresponding path program 23 times [2019-05-23 11:17:43,062 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:43,062 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:43,063 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,063 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:43,063 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,082 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:44,444 INFO L146 ILogger]: Checked inductivity of 2876 backedges. 0 proven. 2484 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-05-23 11:17:44,445 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:44,445 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:44,457 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:44,556 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2019-05-23 11:17:44,557 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:44,558 INFO L146 ILogger]: Trace formula consists of 488 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:17:44,562 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:44,704 INFO L146 ILogger]: Checked inductivity of 2876 backedges. 0 proven. 2484 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-05-23 11:17:44,723 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:44,723 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-05-23 11:17:44,724 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:17:44,724 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:17:44,724 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:17:44,725 INFO L146 ILogger]: Start difference. First operand 306 states and 307 transitions. Second operand 31 states. [2019-05-23 11:17:44,930 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:44,930 INFO L146 ILogger]: Finished difference Result 427 states and 429 transitions. [2019-05-23 11:17:44,930 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:17:44,930 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 305 [2019-05-23 11:17:44,931 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:44,932 INFO L146 ILogger]: With dead ends: 427 [2019-05-23 11:17:44,932 INFO L146 ILogger]: Without dead ends: 319 [2019-05-23 11:17:44,932 INFO L146 ILogger]: 0 DeclaredPredicates, 334 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:17:44,933 INFO L146 ILogger]: Start minimizeSevpa. Operand 319 states. [2019-05-23 11:17:44,938 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 319 to 313. [2019-05-23 11:17:44,938 INFO L146 ILogger]: Start removeUnreachable. Operand 313 states. [2019-05-23 11:17:44,939 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2019-05-23 11:17:44,939 INFO L146 ILogger]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 305 [2019-05-23 11:17:44,939 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:44,939 INFO L146 ILogger]: Abstraction has 313 states and 314 transitions. [2019-05-23 11:17:44,940 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:17:44,940 INFO L146 ILogger]: Start isEmpty. Operand 313 states and 314 transitions. [2019-05-23 11:17:44,941 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 313 [2019-05-23 11:17:44,941 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:44,941 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 28, 28, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:44,942 INFO L146 ILogger]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:44,942 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:44,942 INFO L146 ILogger]: Analyzing trace with hash 1271616737, now seen corresponding path program 24 times [2019-05-23 11:17:44,942 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:44,942 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:44,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:44,943 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:44,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:44,962 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:45,499 INFO L146 ILogger]: Checked inductivity of 3066 backedges. 0 proven. 2674 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-05-23 11:17:45,500 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:45,500 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:45,509 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:45,643 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2019-05-23 11:17:45,644 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:45,645 INFO L146 ILogger]: Trace formula consists of 499 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:17:45,649 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:45,833 INFO L146 ILogger]: Checked inductivity of 3066 backedges. 0 proven. 2674 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-05-23 11:17:45,862 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:45,863 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:17:45,863 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:17:45,863 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:17:45,864 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:17:45,864 INFO L146 ILogger]: Start difference. First operand 313 states and 314 transitions. Second operand 32 states. [2019-05-23 11:17:46,097 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:46,098 INFO L146 ILogger]: Finished difference Result 434 states and 436 transitions. [2019-05-23 11:17:46,098 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:17:46,098 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 312 [2019-05-23 11:17:46,098 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:46,100 INFO L146 ILogger]: With dead ends: 434 [2019-05-23 11:17:46,100 INFO L146 ILogger]: Without dead ends: 326 [2019-05-23 11:17:46,100 INFO L146 ILogger]: 0 DeclaredPredicates, 342 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:17:46,101 INFO L146 ILogger]: Start minimizeSevpa. Operand 326 states. [2019-05-23 11:17:46,107 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 326 to 320. [2019-05-23 11:17:46,108 INFO L146 ILogger]: Start removeUnreachable. Operand 320 states. [2019-05-23 11:17:46,108 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2019-05-23 11:17:46,109 INFO L146 ILogger]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 312 [2019-05-23 11:17:46,109 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:46,109 INFO L146 ILogger]: Abstraction has 320 states and 321 transitions. [2019-05-23 11:17:46,109 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:17:46,109 INFO L146 ILogger]: Start isEmpty. Operand 320 states and 321 transitions. [2019-05-23 11:17:46,111 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 320 [2019-05-23 11:17:46,111 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:46,111 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 29, 29, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:46,111 INFO L146 ILogger]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:46,111 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:46,112 INFO L146 ILogger]: Analyzing trace with hash 2125653068, now seen corresponding path program 25 times [2019-05-23 11:17:46,112 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:46,112 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:46,112 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:46,113 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:46,113 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:46,132 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:47,053 INFO L146 ILogger]: Checked inductivity of 3263 backedges. 0 proven. 2871 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-05-23 11:17:47,054 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:47,054 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:47,062 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:47,132 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:47,133 INFO L146 ILogger]: Trace formula consists of 510 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:17:47,137 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:47,237 INFO L146 ILogger]: Checked inductivity of 3263 backedges. 0 proven. 2871 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-05-23 11:17:47,256 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:47,256 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:17:47,257 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:17:47,257 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:17:47,257 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:17:47,258 INFO L146 ILogger]: Start difference. First operand 320 states and 321 transitions. Second operand 33 states. [2019-05-23 11:17:47,497 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:47,497 INFO L146 ILogger]: Finished difference Result 441 states and 443 transitions. [2019-05-23 11:17:47,497 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:17:47,497 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 319 [2019-05-23 11:17:47,498 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:47,499 INFO L146 ILogger]: With dead ends: 441 [2019-05-23 11:17:47,499 INFO L146 ILogger]: Without dead ends: 333 [2019-05-23 11:17:47,500 INFO L146 ILogger]: 0 DeclaredPredicates, 350 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:17:47,500 INFO L146 ILogger]: Start minimizeSevpa. Operand 333 states. [2019-05-23 11:17:47,507 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 333 to 327. [2019-05-23 11:17:47,508 INFO L146 ILogger]: Start removeUnreachable. Operand 327 states. [2019-05-23 11:17:47,508 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2019-05-23 11:17:47,509 INFO L146 ILogger]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 319 [2019-05-23 11:17:47,509 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:47,509 INFO L146 ILogger]: Abstraction has 327 states and 328 transitions. [2019-05-23 11:17:47,509 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:17:47,509 INFO L146 ILogger]: Start isEmpty. Operand 327 states and 328 transitions. [2019-05-23 11:17:47,511 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 327 [2019-05-23 11:17:47,511 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:47,511 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 30, 30, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:47,511 INFO L146 ILogger]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:47,512 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:47,512 INFO L146 ILogger]: Analyzing trace with hash -1122355583, now seen corresponding path program 26 times [2019-05-23 11:17:47,512 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:47,512 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:47,513 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:47,513 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:47,513 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:47,532 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:48,130 INFO L146 ILogger]: Checked inductivity of 3467 backedges. 0 proven. 3075 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-05-23 11:17:48,131 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:48,131 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:48,139 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:48,219 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:48,219 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:48,221 INFO L146 ILogger]: Trace formula consists of 521 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:17:48,224 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:48,296 INFO L146 ILogger]: Checked inductivity of 3467 backedges. 0 proven. 3075 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-05-23 11:17:48,316 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:48,317 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2019-05-23 11:17:48,317 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:17:48,317 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:17:48,318 INFO L146 ILogger]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:17:48,318 INFO L146 ILogger]: Start difference. First operand 327 states and 328 transitions. Second operand 34 states. [2019-05-23 11:17:48,554 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:48,554 INFO L146 ILogger]: Finished difference Result 448 states and 450 transitions. [2019-05-23 11:17:48,554 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:17:48,554 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 326 [2019-05-23 11:17:48,555 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:48,556 INFO L146 ILogger]: With dead ends: 448 [2019-05-23 11:17:48,556 INFO L146 ILogger]: Without dead ends: 340 [2019-05-23 11:17:48,556 INFO L146 ILogger]: 0 DeclaredPredicates, 358 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:17:48,557 INFO L146 ILogger]: Start minimizeSevpa. Operand 340 states. [2019-05-23 11:17:48,564 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 340 to 334. [2019-05-23 11:17:48,564 INFO L146 ILogger]: Start removeUnreachable. Operand 334 states. [2019-05-23 11:17:48,565 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 334 states to 334 states and 335 transitions. [2019-05-23 11:17:48,565 INFO L146 ILogger]: Start accepts. Automaton has 334 states and 335 transitions. Word has length 326 [2019-05-23 11:17:48,565 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:48,565 INFO L146 ILogger]: Abstraction has 334 states and 335 transitions. [2019-05-23 11:17:48,565 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:17:48,565 INFO L146 ILogger]: Start isEmpty. Operand 334 states and 335 transitions. [2019-05-23 11:17:48,567 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 334 [2019-05-23 11:17:48,567 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:48,568 INFO L146 ILogger]: trace histogram [31, 31, 31, 31, 31, 31, 31, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:48,568 INFO L146 ILogger]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:48,568 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:48,568 INFO L146 ILogger]: Analyzing trace with hash 1859186348, now seen corresponding path program 27 times [2019-05-23 11:17:48,568 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:48,568 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:48,569 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,569 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:48,569 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,589 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:49,417 INFO L146 ILogger]: Checked inductivity of 3678 backedges. 0 proven. 3286 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-05-23 11:17:49,418 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:49,418 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:49,428 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:49,743 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2019-05-23 11:17:49,743 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:49,747 INFO L146 ILogger]: Trace formula consists of 532 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:17:49,753 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:49,947 INFO L146 ILogger]: Checked inductivity of 3678 backedges. 0 proven. 3286 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-05-23 11:17:49,978 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:49,978 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2019-05-23 11:17:49,979 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:17:49,979 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:17:49,980 INFO L146 ILogger]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:17:49,980 INFO L146 ILogger]: Start difference. First operand 334 states and 335 transitions. Second operand 35 states.