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-tiling/rewnif_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:26:25,707 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:26:25,709 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:26:25,726 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:26:25,726 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:26:25,727 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:26:25,729 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:26:25,731 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:26:25,732 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:26:25,733 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:26:25,734 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:26:25,735 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:26:25,736 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:26:25,737 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:26:25,738 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:26:25,739 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:26:25,740 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:26:25,742 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:26:25,744 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:26:25,745 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:26:25,746 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:26:25,748 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:26:25,750 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-05-23 11:26:25,756 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:26:25,757 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:26:25,757 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:26:25,757 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:26:25,758 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:26:25,759 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:26:25,759 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:26:25,786 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:26:25,787 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:26:25,788 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:26:25,789 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:26:25,791 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:26:25,791 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:26:25,792 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:26:25,792 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:26:25,792 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:26:25,792 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:26:25,792 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:26:25,793 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:26:25,793 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:26:25,793 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:26:25,793 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:26:25,793 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:26:25,794 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:26:25,794 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:26:25,794 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:26:25,794 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:26:25,795 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:26:25,795 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:26:25,795 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:26:25,795 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:26:25,795 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:26:25,796 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:26:25,796 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:26:25,796 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:26:25,796 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 11:26:25,827 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:26:25,839 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:26:25,846 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:26:25,848 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:26:25,848 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:26:25,849 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/rewnif_true-unreach-call.i [2019-05-23 11:26:25,912 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ab2368f0/05fee48f45924ecb92dde71afca6822e/FLAGadc7938e5 [2019-05-23 11:26:26,363 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:26:26,364 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/rewnif_true-unreach-call.i [2019-05-23 11:26:26,369 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ab2368f0/05fee48f45924ecb92dde71afca6822e/FLAGadc7938e5 [2019-05-23 11:26:26,710 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ab2368f0/05fee48f45924ecb92dde71afca6822e [2019-05-23 11:26:26,722 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:26:26,723 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:26:26,724 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:26,725 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:26:26,728 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:26:26,729 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,732 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9b625a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26, skipping insertion in model container [2019-05-23 11:26:26,732 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,740 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:26:26,759 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:26:26,905 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:26,910 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:26:26,935 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:26,961 INFO L146 ILogger]: Completed translation [2019-05-23 11:26:26,961 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26 WrapperNode [2019-05-23 11:26:26,961 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:26,962 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:26,963 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:26:26,963 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:26:26,974 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:26,984 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:27,007 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:27,007 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:26:27,007 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:26:27,008 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:26:27,020 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:27,020 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:27,022 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:27,022 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:27,028 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:27,036 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:27,038 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (1/1) ... [2019-05-23 11:26:27,041 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:26:27,042 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:26:27,042 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:26:27,042 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:26:27,046 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (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 11:26:27,233 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:26:27,233 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:26:27,233 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:26:27,234 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:26:27,234 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:26:27,234 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:26:27,701 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:26:27,702 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:26:27,703 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:27 BoogieIcfgContainer [2019-05-23 11:26:27,703 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:26:27,704 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:26:27,704 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:26:27,707 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:26:27,707 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:26:26" (1/3) ... [2019-05-23 11:26:27,708 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15274ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:27, skipping insertion in model container [2019-05-23 11:26:27,708 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:26" (2/3) ... [2019-05-23 11:26:27,709 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15274ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:27, skipping insertion in model container [2019-05-23 11:26:27,709 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:27" (3/3) ... [2019-05-23 11:26:27,711 INFO L146 ILogger]: Analyzing ICFG rewnif_true-unreach-call.i [2019-05-23 11:26:27,720 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:26:27,728 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:26:27,744 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:26:27,773 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:26:27,774 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:26:27,774 INFO L146 ILogger]: Hoare is true [2019-05-23 11:26:27,774 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:26:27,775 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:26:27,775 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:26:27,775 INFO L146 ILogger]: Difference is false [2019-05-23 11:26:27,775 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:26:27,775 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:26:27,792 INFO L146 ILogger]: Start isEmpty. Operand 38 states. [2019-05-23 11:26:27,799 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:26:27,799 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:27,800 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:27,802 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:27,807 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:27,808 INFO L146 ILogger]: Analyzing trace with hash 492767048, now seen corresponding path program 1 times [2019-05-23 11:26:27,810 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:27,810 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:27,856 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:27,856 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:27,857 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:27,899 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:27,937 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 11:26:27,940 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:27,940 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:26:27,944 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:26:27,957 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:26:27,958 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:26:27,960 INFO L146 ILogger]: Start difference. First operand 38 states. Second operand 2 states. [2019-05-23 11:26:27,975 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:27,975 INFO L146 ILogger]: Finished difference Result 57 states and 65 transitions. [2019-05-23 11:26:27,975 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:26:27,976 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:26:27,977 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:27,985 INFO L146 ILogger]: With dead ends: 57 [2019-05-23 11:26:27,985 INFO L146 ILogger]: Without dead ends: 32 [2019-05-23 11:26:27,988 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 11:26:28,005 INFO L146 ILogger]: Start minimizeSevpa. Operand 32 states. [2019-05-23 11:26:28,024 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-05-23 11:26:28,026 INFO L146 ILogger]: Start removeUnreachable. Operand 32 states. [2019-05-23 11:26:28,028 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2019-05-23 11:26:28,030 INFO L146 ILogger]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 21 [2019-05-23 11:26:28,031 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:28,031 INFO L146 ILogger]: Abstraction has 32 states and 34 transitions. [2019-05-23 11:26:28,031 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:26:28,031 INFO L146 ILogger]: Start isEmpty. Operand 32 states and 34 transitions. [2019-05-23 11:26:28,032 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:26:28,032 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:28,032 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:28,033 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:28,033 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:28,034 INFO L146 ILogger]: Analyzing trace with hash -652732616, now seen corresponding path program 1 times [2019-05-23 11:26:28,034 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:28,034 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:28,035 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,035 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:28,035 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,062 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:28,153 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 11:26:28,154 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:28,154 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:26:28,155 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:26:28,156 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:26:28,156 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:28,156 INFO L146 ILogger]: Start difference. First operand 32 states and 34 transitions. Second operand 4 states. [2019-05-23 11:26:28,304 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:28,304 INFO L146 ILogger]: Finished difference Result 69 states and 75 transitions. [2019-05-23 11:26:28,305 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:26:28,305 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 21 [2019-05-23 11:26:28,306 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:28,306 INFO L146 ILogger]: With dead ends: 69 [2019-05-23 11:26:28,306 INFO L146 ILogger]: Without dead ends: 49 [2019-05-23 11:26:28,307 INFO L146 ILogger]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:28,308 INFO L146 ILogger]: Start minimizeSevpa. Operand 49 states. [2019-05-23 11:26:28,313 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 49 to 34. [2019-05-23 11:26:28,313 INFO L146 ILogger]: Start removeUnreachable. Operand 34 states. [2019-05-23 11:26:28,314 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-05-23 11:26:28,314 INFO L146 ILogger]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 21 [2019-05-23 11:26:28,315 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:28,315 INFO L146 ILogger]: Abstraction has 34 states and 36 transitions. [2019-05-23 11:26:28,315 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:26:28,315 INFO L146 ILogger]: Start isEmpty. Operand 34 states and 36 transitions. [2019-05-23 11:26:28,316 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 29 [2019-05-23 11:26:28,316 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:28,317 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:28,317 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:28,317 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:28,318 INFO L146 ILogger]: Analyzing trace with hash -1430978834, now seen corresponding path program 1 times [2019-05-23 11:26:28,318 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:28,318 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:28,319 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,319 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:28,319 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,345 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:28,504 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 11:26:28,504 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:28,505 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 11:26:28,523 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:28,557 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:28,559 INFO L146 ILogger]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:26:28,566 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:28,843 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 11:26:28,864 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:28,865 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:26:28,865 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:26:28,865 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:26:28,866 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:26:28,866 INFO L146 ILogger]: Start difference. First operand 34 states and 36 transitions. Second operand 9 states. [2019-05-23 11:26:29,293 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:29,294 INFO L146 ILogger]: Finished difference Result 69 states and 73 transitions. [2019-05-23 11:26:29,295 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:26:29,295 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 28 [2019-05-23 11:26:29,296 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:29,297 INFO L146 ILogger]: With dead ends: 69 [2019-05-23 11:26:29,297 INFO L146 ILogger]: Without dead ends: 56 [2019-05-23 11:26:29,298 INFO L146 ILogger]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:26:29,298 INFO L146 ILogger]: Start minimizeSevpa. Operand 56 states. [2019-05-23 11:26:29,303 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 56 to 40. [2019-05-23 11:26:29,303 INFO L146 ILogger]: Start removeUnreachable. Operand 40 states. [2019-05-23 11:26:29,304 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2019-05-23 11:26:29,304 INFO L146 ILogger]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 28 [2019-05-23 11:26:29,305 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:29,305 INFO L146 ILogger]: Abstraction has 40 states and 42 transitions. [2019-05-23 11:26:29,305 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:26:29,305 INFO L146 ILogger]: Start isEmpty. Operand 40 states and 42 transitions. [2019-05-23 11:26:29,306 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:26:29,306 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:29,307 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:29,307 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:29,307 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:29,308 INFO L146 ILogger]: Analyzing trace with hash -320220315, now seen corresponding path program 1 times [2019-05-23 11:26:29,308 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:29,308 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:29,309 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:29,309 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:29,309 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:29,356 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:29,795 WARN L146 ILogger]: Spent 185.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2019-05-23 11:26:30,044 WARN L146 ILogger]: Spent 143.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 18 [2019-05-23 11:26:30,354 INFO L146 ILogger]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:30,354 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:30,354 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:26:30,375 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:30,393 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:30,395 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:26:30,397 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:30,494 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:26:30,495 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,505 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:30,506 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,506 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-05-23 11:26:30,626 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:30,629 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:26:30,630 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,670 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:30,671 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:30,672 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:25 [2019-05-23 11:26:30,869 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-05-23 11:26:30,886 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:30,888 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:30,890 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:30,891 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 13 [2019-05-23 11:26:30,891 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:30,914 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:30,915 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 11:26:30,915 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:7 [2019-05-23 11:26:31,050 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:31,072 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:31,072 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2019-05-23 11:26:31,072 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:26:31,073 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:26:31,074 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:26:31,074 INFO L146 ILogger]: Start difference. First operand 40 states and 42 transitions. Second operand 23 states. [2019-05-23 11:26:32,335 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:32,335 INFO L146 ILogger]: Finished difference Result 59 states and 62 transitions. [2019-05-23 11:26:32,335 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:26:32,336 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 34 [2019-05-23 11:26:32,336 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:32,337 INFO L146 ILogger]: With dead ends: 59 [2019-05-23 11:26:32,338 INFO L146 ILogger]: Without dead ends: 57 [2019-05-23 11:26:32,339 INFO L146 ILogger]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=331, Invalid=1001, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:26:32,340 INFO L146 ILogger]: Start minimizeSevpa. Operand 57 states. [2019-05-23 11:26:32,345 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 57 to 46. [2019-05-23 11:26:32,346 INFO L146 ILogger]: Start removeUnreachable. Operand 46 states. [2019-05-23 11:26:32,347 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2019-05-23 11:26:32,347 INFO L146 ILogger]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 34 [2019-05-23 11:26:32,347 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:32,347 INFO L146 ILogger]: Abstraction has 46 states and 48 transitions. [2019-05-23 11:26:32,347 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:26:32,348 INFO L146 ILogger]: Start isEmpty. Operand 46 states and 48 transitions. [2019-05-23 11:26:32,349 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 45 [2019-05-23 11:26:32,349 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:32,349 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:32,349 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:32,350 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:32,350 INFO L146 ILogger]: Analyzing trace with hash 1566710744, now seen corresponding path program 1 times [2019-05-23 11:26:32,350 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:32,350 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:32,351 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:32,351 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:32,351 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:32,375 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:32,652 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:32,652 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:32,652 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 11:26:32,671 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:32,688 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:32,691 INFO L146 ILogger]: Trace formula consists of 74 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:26:32,693 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:32,773 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:26:32,773 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:32,782 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:32,782 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:32,782 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-05-23 11:26:32,946 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:32,948 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:32,948 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 17 treesize of output 10 [2019-05-23 11:26:32,949 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:32,952 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:32,952 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:32,952 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:26:33,028 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:33,048 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:33,048 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2019-05-23 11:26:33,049 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:26:33,049 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:26:33,050 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:26:33,050 INFO L146 ILogger]: Start difference. First operand 46 states and 48 transitions. Second operand 28 states. [2019-05-23 11:26:34,098 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2019-05-23 11:26:34,625 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:34,625 INFO L146 ILogger]: Finished difference Result 103 states and 108 transitions. [2019-05-23 11:26:34,630 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:26:34,631 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 44 [2019-05-23 11:26:34,631 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:34,632 INFO L146 ILogger]: With dead ends: 103 [2019-05-23 11:26:34,632 INFO L146 ILogger]: Without dead ends: 101 [2019-05-23 11:26:34,634 INFO L146 ILogger]: 0 DeclaredPredicates, 87 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=570, Invalid=2622, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:26:34,635 INFO L146 ILogger]: Start minimizeSevpa. Operand 101 states. [2019-05-23 11:26:34,641 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 101 to 65. [2019-05-23 11:26:34,642 INFO L146 ILogger]: Start removeUnreachable. Operand 65 states. [2019-05-23 11:26:34,643 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2019-05-23 11:26:34,643 INFO L146 ILogger]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 44 [2019-05-23 11:26:34,643 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:34,643 INFO L146 ILogger]: Abstraction has 65 states and 70 transitions. [2019-05-23 11:26:34,644 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:26:34,644 INFO L146 ILogger]: Start isEmpty. Operand 65 states and 70 transitions. [2019-05-23 11:26:34,645 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 52 [2019-05-23 11:26:34,645 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:34,645 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:34,646 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:34,646 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:34,646 INFO L146 ILogger]: Analyzing trace with hash 1239004052, now seen corresponding path program 2 times [2019-05-23 11:26:34,646 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:34,646 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:34,647 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:34,647 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:34,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:34,661 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:34,725 INFO L146 ILogger]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:26:34,725 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:34,725 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:26:34,726 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:26:34,726 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:26:34,726 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:26:34,727 INFO L146 ILogger]: Start difference. First operand 65 states and 70 transitions. Second operand 5 states. [2019-05-23 11:26:34,806 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:34,806 INFO L146 ILogger]: Finished difference Result 118 states and 129 transitions. [2019-05-23 11:26:34,806 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:26:34,806 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 51 [2019-05-23 11:26:34,807 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:34,807 INFO L146 ILogger]: With dead ends: 118 [2019-05-23 11:26:34,808 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:26:34,808 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:26:34,809 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:26:34,815 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 75. [2019-05-23 11:26:34,815 INFO L146 ILogger]: Start removeUnreachable. Operand 75 states. [2019-05-23 11:26:34,816 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2019-05-23 11:26:34,817 INFO L146 ILogger]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 51 [2019-05-23 11:26:34,817 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:34,817 INFO L146 ILogger]: Abstraction has 75 states and 80 transitions. [2019-05-23 11:26:34,817 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:26:34,817 INFO L146 ILogger]: Start isEmpty. Operand 75 states and 80 transitions. [2019-05-23 11:26:34,819 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 53 [2019-05-23 11:26:34,819 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:34,819 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:34,819 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:34,820 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:34,820 INFO L146 ILogger]: Analyzing trace with hash 2078970081, now seen corresponding path program 1 times [2019-05-23 11:26:34,820 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:34,820 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:34,821 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:34,821 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:34,821 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:34,835 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:34,901 INFO L146 ILogger]: Checked inductivity of 30 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:26:34,902 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:34,902 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:26:34,902 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:26:34,902 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:26:34,903 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:26:34,903 INFO L146 ILogger]: Start difference. First operand 75 states and 80 transitions. Second operand 5 states. [2019-05-23 11:26:34,992 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:34,992 INFO L146 ILogger]: Finished difference Result 105 states and 110 transitions. [2019-05-23 11:26:34,993 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:26:34,993 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 52 [2019-05-23 11:26:34,993 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:34,994 INFO L146 ILogger]: With dead ends: 105 [2019-05-23 11:26:34,995 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:26:34,996 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:26:34,997 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:26:35,003 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 75. [2019-05-23 11:26:35,003 INFO L146 ILogger]: Start removeUnreachable. Operand 75 states. [2019-05-23 11:26:35,004 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2019-05-23 11:26:35,004 INFO L146 ILogger]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 52 [2019-05-23 11:26:35,005 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:35,005 INFO L146 ILogger]: Abstraction has 75 states and 78 transitions. [2019-05-23 11:26:35,005 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:26:35,005 INFO L146 ILogger]: Start isEmpty. Operand 75 states and 78 transitions. [2019-05-23 11:26:35,006 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:26:35,006 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:35,006 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:35,007 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:35,007 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:35,007 INFO L146 ILogger]: Analyzing trace with hash -857952117, now seen corresponding path program 3 times [2019-05-23 11:26:35,007 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:35,007 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:35,008 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,008 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:35,008 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,019 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:35,115 INFO L146 ILogger]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:35,116 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:35,116 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 11:26:35,125 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:35,180 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:26:35,180 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:35,181 INFO L146 ILogger]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:26:35,184 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:35,318 INFO L146 ILogger]: Checked inductivity of 30 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:35,337 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:35,337 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2019-05-23 11:26:35,337 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:26:35,338 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:26:35,338 INFO L146 ILogger]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:26:35,338 INFO L146 ILogger]: Start difference. First operand 75 states and 78 transitions. Second operand 18 states. [2019-05-23 11:26:35,640 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:35,641 INFO L146 ILogger]: Finished difference Result 123 states and 126 transitions. [2019-05-23 11:26:35,641 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:26:35,641 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 54 [2019-05-23 11:26:35,642 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:35,643 INFO L146 ILogger]: With dead ends: 123 [2019-05-23 11:26:35,643 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:26:35,644 INFO L146 ILogger]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:26:35,645 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:26:35,651 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 75. [2019-05-23 11:26:35,651 INFO L146 ILogger]: Start removeUnreachable. Operand 75 states. [2019-05-23 11:26:35,652 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2019-05-23 11:26:35,652 INFO L146 ILogger]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 54 [2019-05-23 11:26:35,652 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:35,653 INFO L146 ILogger]: Abstraction has 75 states and 77 transitions. [2019-05-23 11:26:35,653 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:26:35,653 INFO L146 ILogger]: Start isEmpty. Operand 75 states and 77 transitions. [2019-05-23 11:26:35,654 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:26:35,654 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:35,654 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:35,655 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:35,655 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:35,655 INFO L146 ILogger]: Analyzing trace with hash 270134424, now seen corresponding path program 4 times [2019-05-23 11:26:35,655 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:35,655 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:35,656 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,656 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:35,656 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,680 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:36,111 INFO L146 ILogger]: Checked inductivity of 49 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:36,112 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:36,112 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 11:26:36,123 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:36,153 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:36,153 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:36,154 INFO L146 ILogger]: Trace formula consists of 90 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:26:36,157 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:36,527 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:26:36,527 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,622 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,623 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,623 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-05-23 11:26:36,772 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:36,773 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:26:36,774 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,782 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,783 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,783 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-05-23 11:26:36,819 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:36,820 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:36,822 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:36,823 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,823 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2019-05-23 11:26:36,824 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,838 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,838 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,839 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2019-05-23 11:26:37,005 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:37,007 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:37,009 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:37,013 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:37,014 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2019-05-23 11:26:37,015 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,025 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:37,025 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,026 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:31 [2019-05-23 11:26:37,288 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:37,288 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:37,291 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:37,291 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 16 [2019-05-23 11:26:37,292 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,295 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:37,296 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:37,296 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:7 [2019-05-23 11:26:37,387 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:37,405 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:37,405 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 41 [2019-05-23 11:26:37,406 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:26:37,406 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:26:37,407 INFO L146 ILogger]: CoverageRelationStatistics Valid=216, Invalid=1424, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:26:37,407 INFO L146 ILogger]: Start difference. First operand 75 states and 77 transitions. Second operand 41 states. [2019-05-23 11:26:40,421 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:40,421 INFO L146 ILogger]: Finished difference Result 166 states and 170 transitions. [2019-05-23 11:26:40,422 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:26:40,422 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 58 [2019-05-23 11:26:40,422 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:40,425 INFO L146 ILogger]: With dead ends: 166 [2019-05-23 11:26:40,425 INFO L146 ILogger]: Without dead ends: 164 [2019-05-23 11:26:40,428 INFO L146 ILogger]: 0 DeclaredPredicates, 131 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2908 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1128, Invalid=7614, Unknown=0, NotChecked=0, Total=8742 [2019-05-23 11:26:40,428 INFO L146 ILogger]: Start minimizeSevpa. Operand 164 states. [2019-05-23 11:26:40,437 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 164 to 89. [2019-05-23 11:26:40,437 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:26:40,438 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2019-05-23 11:26:40,438 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 58 [2019-05-23 11:26:40,439 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:40,439 INFO L146 ILogger]: Abstraction has 89 states and 93 transitions. [2019-05-23 11:26:40,439 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:26:40,439 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 93 transitions. [2019-05-23 11:26:40,440 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 62 [2019-05-23 11:26:40,440 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:40,441 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:40,441 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:40,441 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:40,441 INFO L146 ILogger]: Analyzing trace with hash -1118955627, now seen corresponding path program 5 times [2019-05-23 11:26:40,441 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:40,442 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:40,442 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:40,442 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:40,443 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:40,458 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:40,759 INFO L146 ILogger]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:40,760 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:40,760 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 11:26:40,770 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:26:40,808 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:26:40,808 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:40,810 INFO L146 ILogger]: Trace formula consists of 98 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:26:40,814 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:40,904 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:26:40,904 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:40,906 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:40,906 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:40,907 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2019-05-23 11:26:41,088 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2019-05-23 11:26:41,088 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,092 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,092 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 11:26:41,093 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:9 [2019-05-23 11:26:41,245 INFO L146 ILogger]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:41,265 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:41,265 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 30 [2019-05-23 11:26:41,265 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:26:41,265 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:26:41,266 INFO L146 ILogger]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:26:41,266 INFO L146 ILogger]: Start difference. First operand 89 states and 93 transitions. Second operand 30 states. [2019-05-23 11:26:42,701 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:42,701 INFO L146 ILogger]: Finished difference Result 155 states and 159 transitions. [2019-05-23 11:26:42,701 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:26:42,701 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 61 [2019-05-23 11:26:42,702 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:42,702 INFO L146 ILogger]: With dead ends: 155 [2019-05-23 11:26:42,702 INFO L146 ILogger]: Without dead ends: 153 [2019-05-23 11:26:42,703 INFO L146 ILogger]: 0 DeclaredPredicates, 107 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=403, Invalid=2903, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:26:42,704 INFO L146 ILogger]: Start minimizeSevpa. Operand 153 states. [2019-05-23 11:26:42,711 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 153 to 105. [2019-05-23 11:26:42,711 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:26:42,712 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2019-05-23 11:26:42,712 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 61 [2019-05-23 11:26:42,712 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:42,712 INFO L146 ILogger]: Abstraction has 105 states and 109 transitions. [2019-05-23 11:26:42,713 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:26:42,713 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 109 transitions. [2019-05-23 11:26:42,714 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 72 [2019-05-23 11:26:42,714 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:42,714 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:42,715 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:42,715 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:42,715 INFO L146 ILogger]: Analyzing trace with hash -1423776760, now seen corresponding path program 6 times [2019-05-23 11:26:42,715 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:42,715 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:42,716 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:42,716 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:42,716 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:42,726 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:42,907 INFO L146 ILogger]: Checked inductivity of 70 backedges. 29 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:42,908 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:42,908 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:26:42,922 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:26:42,982 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:26:42,982 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:42,983 INFO L146 ILogger]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:26:42,986 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:43,144 INFO L146 ILogger]: Checked inductivity of 70 backedges. 48 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:43,162 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:43,163 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 24 [2019-05-23 11:26:43,163 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:26:43,163 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:26:43,164 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:26:43,164 INFO L146 ILogger]: Start difference. First operand 105 states and 109 transitions. Second operand 24 states. [2019-05-23 11:26:43,593 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:43,593 INFO L146 ILogger]: Finished difference Result 172 states and 176 transitions. [2019-05-23 11:26:43,596 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:26:43,596 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 71 [2019-05-23 11:26:43,596 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:43,597 INFO L146 ILogger]: With dead ends: 172 [2019-05-23 11:26:43,597 INFO L146 ILogger]: Without dead ends: 123 [2019-05-23 11:26:43,598 INFO L146 ILogger]: 0 DeclaredPredicates, 99 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:26:43,599 INFO L146 ILogger]: Start minimizeSevpa. Operand 123 states. [2019-05-23 11:26:43,609 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 123 to 105. [2019-05-23 11:26:43,609 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:26:43,610 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2019-05-23 11:26:43,610 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 71 [2019-05-23 11:26:43,610 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:43,611 INFO L146 ILogger]: Abstraction has 105 states and 108 transitions. [2019-05-23 11:26:43,611 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:26:43,611 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 108 transitions. [2019-05-23 11:26:43,612 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 73 [2019-05-23 11:26:43,612 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:43,613 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:43,613 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:43,613 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:43,613 INFO L146 ILogger]: Analyzing trace with hash -512397992, now seen corresponding path program 7 times [2019-05-23 11:26:43,613 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:43,613 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:43,615 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:43,615 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:43,615 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:43,661 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:44,278 WARN L146 ILogger]: Spent 121.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2019-05-23 11:26:44,827 INFO L146 ILogger]: Checked inductivity of 112 backedges. 11 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:44,828 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:44,828 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 11:26:44,844 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:44,870 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:44,871 INFO L146 ILogger]: Trace formula consists of 110 conjuncts, 50 conjunts are in the unsatisfiable core [2019-05-23 11:26:44,874 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:44,976 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:26:44,976 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:44,982 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:44,982 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:44,982 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-05-23 11:26:45,062 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,063 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:26:45,064 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,069 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:45,069 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,069 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-05-23 11:26:45,107 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,110 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,111 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,112 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:45,112 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2019-05-23 11:26:45,112 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,121 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:45,121 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,122 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2019-05-23 11:26:45,230 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,231 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,232 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,233 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,236 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,237 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,239 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:45,239 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2019-05-23 11:26:45,240 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,253 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:45,253 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,254 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2019-05-23 11:26:45,302 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:45,303 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,305 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,306 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,308 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,309 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,310 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,311 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:45,312 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2019-05-23 11:26:45,313 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,339 INFO L146 ILogger]: treesize reduction 11, result has 80.7 percent of original size [2019-05-23 11:26:45,340 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,340 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:46 [2019-05-23 11:26:45,486 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,487 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,491 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,492 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,493 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,493 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,494 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,495 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,496 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,497 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,498 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:45,498 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 61 [2019-05-23 11:26:45,499 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,513 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:45,514 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,514 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:59, output treesize:55 [2019-05-23 11:26:45,580 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,580 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:45,581 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,582 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,583 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,585 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,586 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,587 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,598 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,599 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,600 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,602 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:45,602 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 75 [2019-05-23 11:26:45,603 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,637 INFO L146 ILogger]: treesize reduction 11, result has 83.3 percent of original size [2019-05-23 11:26:45,638 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,638 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:55 [2019-05-23 11:26:45,834 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,835 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,836 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,837 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,837 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,838 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:45,918 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:45,919 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 91 treesize of output 205 [2019-05-23 11:26:45,922 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,971 INFO L146 ILogger]: treesize reduction 104, result has 32.0 percent of original size [2019-05-23 11:26:45,971 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:45,972 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:94, output treesize:49 [2019-05-23 11:26:46,387 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:46,388 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:46,388 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:46,390 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:46,391 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 45 treesize of output 22 [2019-05-23 11:26:46,391 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:46,394 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:46,395 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:46,395 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:48, output treesize:7 [2019-05-23 11:26:46,609 INFO L146 ILogger]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:46,629 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:46,629 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 30] total 53 [2019-05-23 11:26:46,630 INFO L146 ILogger]: Interpolant automaton has 53 states [2019-05-23 11:26:46,630 INFO L146 ILogger]: Constructing interpolant automaton starting with 53 interpolants. [2019-05-23 11:26:46,631 INFO L146 ILogger]: CoverageRelationStatistics Valid=324, Invalid=2432, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:26:46,631 INFO L146 ILogger]: Start difference. First operand 105 states and 108 transitions. Second operand 53 states. [2019-05-23 11:26:48,601 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2019-05-23 11:26:51,653 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:51,653 INFO L146 ILogger]: Finished difference Result 205 states and 211 transitions. [2019-05-23 11:26:51,654 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2019-05-23 11:26:51,654 INFO L146 ILogger]: Start accepts. Automaton has 53 states. Word has length 72 [2019-05-23 11:26:51,654 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:51,656 INFO L146 ILogger]: With dead ends: 205 [2019-05-23 11:26:51,656 INFO L146 ILogger]: Without dead ends: 203 [2019-05-23 11:26:51,661 INFO L146 ILogger]: 0 DeclaredPredicates, 166 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4813 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1487, Invalid=12555, Unknown=0, NotChecked=0, Total=14042 [2019-05-23 11:26:51,661 INFO L146 ILogger]: Start minimizeSevpa. Operand 203 states. [2019-05-23 11:26:51,666 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 203 to 92. [2019-05-23 11:26:51,667 INFO L146 ILogger]: Start removeUnreachable. Operand 92 states. [2019-05-23 11:26:51,667 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2019-05-23 11:26:51,667 INFO L146 ILogger]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 72 [2019-05-23 11:26:51,668 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:51,668 INFO L146 ILogger]: Abstraction has 92 states and 94 transitions. [2019-05-23 11:26:51,668 INFO L146 ILogger]: Interpolant automaton has 53 states. [2019-05-23 11:26:51,668 INFO L146 ILogger]: Start isEmpty. Operand 92 states and 94 transitions. [2019-05-23 11:26:51,669 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 76 [2019-05-23 11:26:51,669 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:51,669 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:51,670 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:51,670 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:51,670 INFO L146 ILogger]: Analyzing trace with hash -459677995, now seen corresponding path program 8 times [2019-05-23 11:26:51,670 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:51,670 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:51,671 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:51,671 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:51,671 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:51,688 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:52,268 INFO L146 ILogger]: Checked inductivity of 93 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:52,269 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:52,269 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 11:26:52,277 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:52,295 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:52,295 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:52,296 INFO L146 ILogger]: Trace formula consists of 116 conjuncts, 46 conjunts are in the unsatisfiable core [2019-05-23 11:26:52,298 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:52,437 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:26:52,438 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:52,444 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:52,444 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:52,445 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-05-23 11:26:52,528 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:52,529 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:26:52,529 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:52,537 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:52,538 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:52,538 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-05-23 11:26:52,574 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:52,575 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:52,576 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:52,577 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:52,578 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2019-05-23 11:26:52,579 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:52,587 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:52,588 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:52,588 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2019-05-23 11:26:52,726 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:52,728 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:52,729 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:52,731 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:52,731 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2019-05-23 11:26:52,731 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:52,737 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:52,738 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:52,738 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:31 [2019-05-23 11:26:53,170 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:53,171 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:53,173 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:53,175 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:53,175 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 16 [2019-05-23 11:26:53,176 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:53,201 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:53,202 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:53,202 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:7 [2019-05-23 11:26:53,322 INFO L146 ILogger]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:53,340 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:53,340 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 48 [2019-05-23 11:26:53,341 INFO L146 ILogger]: Interpolant automaton has 48 states [2019-05-23 11:26:53,341 INFO L146 ILogger]: Constructing interpolant automaton starting with 48 interpolants. [2019-05-23 11:26:53,342 INFO L146 ILogger]: CoverageRelationStatistics Valid=248, Invalid=2008, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:26:53,342 INFO L146 ILogger]: Start difference. First operand 92 states and 94 transitions. Second operand 48 states. [2019-05-23 11:26:58,251 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:58,251 INFO L146 ILogger]: Finished difference Result 226 states and 232 transitions. [2019-05-23 11:26:58,251 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2019-05-23 11:26:58,251 INFO L146 ILogger]: Start accepts. Automaton has 48 states. Word has length 75 [2019-05-23 11:26:58,252 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:58,253 INFO L146 ILogger]: With dead ends: 226 [2019-05-23 11:26:58,253 INFO L146 ILogger]: Without dead ends: 224 [2019-05-23 11:26:58,257 INFO L146 ILogger]: 0 DeclaredPredicates, 186 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6377 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1963, Invalid=16397, Unknown=0, NotChecked=0, Total=18360 [2019-05-23 11:26:58,258 INFO L146 ILogger]: Start minimizeSevpa. Operand 224 states. [2019-05-23 11:26:58,264 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 224 to 116. [2019-05-23 11:26:58,264 INFO L146 ILogger]: Start removeUnreachable. Operand 116 states. [2019-05-23 11:26:58,265 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2019-05-23 11:26:58,265 INFO L146 ILogger]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 75 [2019-05-23 11:26:58,265 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:58,265 INFO L146 ILogger]: Abstraction has 116 states and 120 transitions. [2019-05-23 11:26:58,265 INFO L146 ILogger]: Interpolant automaton has 48 states. [2019-05-23 11:26:58,265 INFO L146 ILogger]: Start isEmpty. Operand 116 states and 120 transitions. [2019-05-23 11:26:58,266 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:26:58,266 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:58,267 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:58,267 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:58,267 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:58,267 INFO L146 ILogger]: Analyzing trace with hash -360762818, now seen corresponding path program 9 times [2019-05-23 11:26:58,267 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:58,267 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:58,268 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:58,268 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:58,268 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:58,286 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:58,935 INFO L146 ILogger]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:58,935 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:58,935 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 11:26:58,945 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:58,973 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:26:58,973 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:58,974 INFO L146 ILogger]: Trace formula consists of 122 conjuncts, 48 conjunts are in the unsatisfiable core [2019-05-23 11:26:58,976 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:59,132 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:26:59,132 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:59,141 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:59,142 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:59,142 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2019-05-23 11:27:00,119 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2019-05-23 11:27:00,120 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:00,129 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:00,130 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 11:27:00,130 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:10 [2019-05-23 11:27:00,248 INFO L146 ILogger]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:00,274 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:00,274 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 43 [2019-05-23 11:27:00,274 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:27:00,274 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:27:00,276 INFO L146 ILogger]: CoverageRelationStatistics Valid=165, Invalid=1641, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:27:00,276 INFO L146 ILogger]: Start difference. First operand 116 states and 120 transitions. Second operand 43 states. [2019-05-23 11:27:02,859 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:02,860 INFO L146 ILogger]: Finished difference Result 189 states and 193 transitions. [2019-05-23 11:27:02,860 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:27:02,860 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 78 [2019-05-23 11:27:02,860 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:02,861 INFO L146 ILogger]: With dead ends: 189 [2019-05-23 11:27:02,862 INFO L146 ILogger]: Without dead ends: 187 [2019-05-23 11:27:02,863 INFO L146 ILogger]: 0 DeclaredPredicates, 139 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=661, Invalid=5819, Unknown=0, NotChecked=0, Total=6480 [2019-05-23 11:27:02,863 INFO L146 ILogger]: Start minimizeSevpa. Operand 187 states. [2019-05-23 11:27:02,871 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 187 to 116. [2019-05-23 11:27:02,871 INFO L146 ILogger]: Start removeUnreachable. Operand 116 states. [2019-05-23 11:27:02,872 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2019-05-23 11:27:02,872 INFO L146 ILogger]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 78 [2019-05-23 11:27:02,872 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:02,872 INFO L146 ILogger]: Abstraction has 116 states and 120 transitions. [2019-05-23 11:27:02,873 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:27:02,873 INFO L146 ILogger]: Start isEmpty. Operand 116 states and 120 transitions. [2019-05-23 11:27:02,873 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:27:02,874 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:02,874 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:02,874 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:02,874 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:02,874 INFO L146 ILogger]: Analyzing trace with hash 1412792177, now seen corresponding path program 10 times [2019-05-23 11:27:02,875 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:02,875 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:02,875 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:02,876 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:02,876 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:02,887 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:03,146 INFO L146 ILogger]: Checked inductivity of 127 backedges. 56 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:03,146 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:03,146 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 11:27:03,154 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:27:03,176 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:27:03,176 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:03,176 INFO L146 ILogger]: Trace formula consists of 135 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:27:03,178 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:03,382 INFO L146 ILogger]: Checked inductivity of 127 backedges. 84 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:03,400 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:03,400 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 30 [2019-05-23 11:27:03,400 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:27:03,401 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:27:03,401 INFO L146 ILogger]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:27:03,401 INFO L146 ILogger]: Start difference. First operand 116 states and 120 transitions. Second operand 30 states. [2019-05-23 11:27:03,894 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:03,894 INFO L146 ILogger]: Finished difference Result 184 states and 188 transitions. [2019-05-23 11:27:03,896 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:27:03,896 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 88 [2019-05-23 11:27:03,896 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:03,896 INFO L146 ILogger]: With dead ends: 184 [2019-05-23 11:27:03,897 INFO L146 ILogger]: Without dead ends: 125 [2019-05-23 11:27:03,897 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=361, Invalid=1991, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:27:03,898 INFO L146 ILogger]: Start minimizeSevpa. Operand 125 states. [2019-05-23 11:27:03,904 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 125 to 116. [2019-05-23 11:27:03,904 INFO L146 ILogger]: Start removeUnreachable. Operand 116 states. [2019-05-23 11:27:03,905 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2019-05-23 11:27:03,905 INFO L146 ILogger]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 88 [2019-05-23 11:27:03,905 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:03,905 INFO L146 ILogger]: Abstraction has 116 states and 119 transitions. [2019-05-23 11:27:03,905 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:27:03,905 INFO L146 ILogger]: Start isEmpty. Operand 116 states and 119 transitions. [2019-05-23 11:27:03,906 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 96 [2019-05-23 11:27:03,906 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:03,906 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:03,907 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:03,907 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:03,907 INFO L146 ILogger]: Analyzing trace with hash 570729467, now seen corresponding path program 11 times [2019-05-23 11:27:03,907 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:03,907 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:03,908 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:03,908 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:03,908 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:03,921 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:05,032 INFO L146 ILogger]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:05,033 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:05,033 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 11:27:05,041 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:27:05,093 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:27:05,093 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:05,095 INFO L146 ILogger]: Trace formula consists of 146 conjuncts, 46 conjunts are in the unsatisfiable core [2019-05-23 11:27:05,097 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:05,390 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:27:05,390 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,398 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,399 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:27:05,399 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2019-05-23 11:27:06,823 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:06,825 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:06,826 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2019-05-23 11:27:06,826 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:06,834 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:06,835 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 11:27:06,835 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:7 [2019-05-23 11:27:06,939 INFO L146 ILogger]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:06,958 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:06,959 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25] total 44 [2019-05-23 11:27:06,959 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:27:06,959 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:27:06,960 INFO L146 ILogger]: CoverageRelationStatistics Valid=170, Invalid=1722, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:27:06,960 INFO L146 ILogger]: Start difference. First operand 116 states and 119 transitions. Second operand 44 states. [2019-05-23 11:27:09,561 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:09,561 INFO L146 ILogger]: Finished difference Result 178 states and 181 transitions. [2019-05-23 11:27:09,561 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-05-23 11:27:09,562 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 95 [2019-05-23 11:27:09,562 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:09,562 INFO L146 ILogger]: With dead ends: 178 [2019-05-23 11:27:09,563 INFO L146 ILogger]: Without dead ends: 176 [2019-05-23 11:27:09,563 INFO L146 ILogger]: 0 DeclaredPredicates, 166 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1906 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=663, Invalid=6819, Unknown=0, NotChecked=0, Total=7482 [2019-05-23 11:27:09,564 INFO L146 ILogger]: Start minimizeSevpa. Operand 176 states. [2019-05-23 11:27:09,570 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 176 to 126. [2019-05-23 11:27:09,570 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:27:09,570 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2019-05-23 11:27:09,571 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 95 [2019-05-23 11:27:09,571 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:09,571 INFO L146 ILogger]: Abstraction has 126 states and 129 transitions. [2019-05-23 11:27:09,571 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:27:09,571 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 129 transitions. [2019-05-23 11:27:09,572 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 100 [2019-05-23 11:27:09,572 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:09,572 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:09,573 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:09,573 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:09,573 INFO L146 ILogger]: Analyzing trace with hash -1089953144, now seen corresponding path program 12 times [2019-05-23 11:27:09,573 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:09,573 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:09,574 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:09,574 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:09,574 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:09,592 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:10,474 INFO L146 ILogger]: Checked inductivity of 196 backedges. 6 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:10,474 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:10,474 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 11:27:10,491 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:27:10,583 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-05-23 11:27:10,583 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:10,585 INFO L146 ILogger]: Trace formula consists of 149 conjuncts, 54 conjunts are in the unsatisfiable core [2019-05-23 11:27:10,587 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:10,853 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:27:10,854 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:10,858 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:10,858 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:10,858 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2019-05-23 11:27:10,907 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:10,908 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 57 [2019-05-23 11:27:10,908 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:10,937 INFO L146 ILogger]: treesize reduction 21, result has 65.0 percent of original size [2019-05-23 11:27:10,938 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:10,938 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:39 [2019-05-23 11:27:10,994 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:10,999 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2019-05-23 11:27:10,999 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,004 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:11,025 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:11,025 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 90 [2019-05-23 11:27:11,026 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,087 INFO L146 ILogger]: treesize reduction 54, result has 58.1 percent of original size [2019-05-23 11:27:11,088 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-05-23 11:27:11,088 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:83, output treesize:75 [2019-05-23 11:27:11,454 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:11,495 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:11,496 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 110 [2019-05-23 11:27:11,497 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,507 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:11,570 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:11,571 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 60 treesize of output 205 [2019-05-23 11:27:11,572 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,695 WARN L146 ILogger]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2019-05-23 11:27:11,695 INFO L146 ILogger]: treesize reduction 169, result has 43.9 percent of original size [2019-05-23 11:27:11,696 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-05-23 11:27:11,697 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:105, output treesize:132 [2019-05-23 11:27:11,822 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:11,828 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:11,890 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:11,890 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 150 [2019-05-23 11:27:11,891 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,914 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:11,921 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:12,042 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:12,043 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 71 treesize of output 263 [2019-05-23 11:27:12,044 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:12,059 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:12,061 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:12,062 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:12,075 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 55 [2019-05-23 11:27:12,076 INFO L146 ILogger]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:12,097 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:12,098 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:12,100 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:12,147 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:12,148 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 122 [2019-05-23 11:27:12,149 INFO L146 ILogger]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:12,159 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:12,163 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:12,216 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:12,217 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 67 treesize of output 182 [2019-05-23 11:27:12,218 INFO L146 ILogger]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:12,231 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:12,232 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:12,233 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:12,238 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 53 [2019-05-23 11:27:12,239 INFO L146 ILogger]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:12,642 WARN L146 ILogger]: Spent 401.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 55 [2019-05-23 11:27:12,642 INFO L146 ILogger]: treesize reduction 572, result has 31.2 percent of original size [2019-05-23 11:27:12,643 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 4 xjuncts. [2019-05-23 11:27:12,644 INFO L146 ILogger]: Needed 7 recursive calls to eliminate 2 variables, input treesize:355, output treesize:259 [2019-05-23 11:27:12,885 WARN L146 ILogger]: Spent 152.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2019-05-23 11:27:13,269 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:13,274 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:13,275 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:13,305 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:13,306 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 142 [2019-05-23 11:27:13,307 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:13,354 INFO L146 ILogger]: treesize reduction 76, result has 47.2 percent of original size [2019-05-23 11:27:13,355 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-05-23 11:27:13,355 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:59, output treesize:68 [2019-05-23 11:27:16,471 INFO L146 ILogger]: Different costs {12=[v_prenex_25], 20=[|#memory_int|]} [2019-05-23 11:27:16,477 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,477 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:16,479 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,491 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:16,492 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 50 [2019-05-23 11:27:16,492 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,552 INFO L146 ILogger]: treesize reduction 30, result has 69.4 percent of original size [2019-05-23 11:27:16,560 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,561 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,562 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,563 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,565 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,567 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:16,589 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:16,589 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 78 [2019-05-23 11:27:16,590 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,634 INFO L146 ILogger]: treesize reduction 38, result has 48.6 percent of original size [2019-05-23 11:27:16,634 INFO L146 ILogger]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,635 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 7 variables, input treesize:103, output treesize:7 [2019-05-23 11:27:16,828 INFO L146 ILogger]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:16,849 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:16,849 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 34] total 62 [2019-05-23 11:27:16,849 INFO L146 ILogger]: Interpolant automaton has 62 states [2019-05-23 11:27:16,849 INFO L146 ILogger]: Constructing interpolant automaton starting with 62 interpolants. [2019-05-23 11:27:16,850 INFO L146 ILogger]: CoverageRelationStatistics Valid=297, Invalid=3485, Unknown=0, NotChecked=0, Total=3782 [2019-05-23 11:27:16,850 INFO L146 ILogger]: Start difference. First operand 126 states and 129 transitions. Second operand 62 states. [2019-05-23 11:27:20,816 WARN L146 ILogger]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 32 [2019-05-23 11:27:22,917 WARN L146 ILogger]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-05-23 11:27:23,157 WARN L146 ILogger]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-05-23 11:27:24,183 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-05-23 11:27:24,424 WARN L146 ILogger]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-05-23 11:27:24,874 WARN L146 ILogger]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-05-23 11:27:25,124 WARN L146 ILogger]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-05-23 11:27:26,002 WARN L146 ILogger]: Spent 158.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2019-05-23 11:27:26,253 WARN L146 ILogger]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-05-23 11:27:26,497 WARN L146 ILogger]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-05-23 11:27:26,848 WARN L146 ILogger]: Spent 238.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2019-05-23 11:27:27,129 WARN L146 ILogger]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-05-23 11:27:27,393 WARN L146 ILogger]: Spent 152.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 59 [2019-05-23 11:27:28,064 WARN L146 ILogger]: Spent 213.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 61 [2019-05-23 11:27:28,378 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-05-23 11:27:28,681 WARN L146 ILogger]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-05-23 11:27:29,065 WARN L146 ILogger]: Spent 159.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-05-23 11:27:29,523 WARN L146 ILogger]: Spent 249.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2019-05-23 11:27:30,042 WARN L146 ILogger]: Spent 160.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 60 [2019-05-23 11:27:30,375 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-05-23 11:27:30,863 WARN L146 ILogger]: Spent 251.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 62 [2019-05-23 11:27:31,234 WARN L146 ILogger]: Spent 213.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-05-23 11:27:33,559 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:33,560 INFO L146 ILogger]: Finished difference Result 248 states and 251 transitions. [2019-05-23 11:27:33,560 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2019-05-23 11:27:33,560 INFO L146 ILogger]: Start accepts. Automaton has 62 states. Word has length 99 [2019-05-23 11:27:33,560 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:33,561 INFO L146 ILogger]: With dead ends: 248 [2019-05-23 11:27:33,561 INFO L146 ILogger]: Without dead ends: 246 [2019-05-23 11:27:33,563 INFO L146 ILogger]: 0 DeclaredPredicates, 237 GetRequests, 55 SyntacticMatches, 15 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9585 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=2373, Invalid=26019, Unknown=0, NotChecked=0, Total=28392 [2019-05-23 11:27:33,563 INFO L146 ILogger]: Start minimizeSevpa. Operand 246 states. [2019-05-23 11:27:33,572 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 246 to 126. [2019-05-23 11:27:33,572 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:27:33,573 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2019-05-23 11:27:33,573 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 99 [2019-05-23 11:27:33,573 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:33,574 INFO L146 ILogger]: Abstraction has 126 states and 129 transitions. [2019-05-23 11:27:33,574 INFO L146 ILogger]: Interpolant automaton has 62 states. [2019-05-23 11:27:33,574 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 129 transitions. [2019-05-23 11:27:33,575 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:27:33,575 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:33,575 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:33,575 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:33,576 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:33,576 INFO L146 ILogger]: Analyzing trace with hash -1992709906, now seen corresponding path program 13 times [2019-05-23 11:27:33,576 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:33,576 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:33,577 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:33,577 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:33,577 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:33,588 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:33,854 INFO L146 ILogger]: Checked inductivity of 201 backedges. 93 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:33,854 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:33,854 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 11:27:33,862 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:33,885 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:33,886 INFO L146 ILogger]: Trace formula consists of 161 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:27:33,887 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:34,139 INFO L146 ILogger]: Checked inductivity of 201 backedges. 130 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:34,159 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:34,160 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 36 [2019-05-23 11:27:34,160 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:27:34,160 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:27:34,160 INFO L146 ILogger]: CoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:27:34,160 INFO L146 ILogger]: Start difference. First operand 126 states and 129 transitions. Second operand 36 states.