java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/021b-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:19:53,686 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:19:53,689 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:19:53,703 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:19:53,704 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:19:53,704 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:19:53,708 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:19:53,714 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:19:53,715 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:19:53,718 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:19:53,718 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:19:53,719 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:19:53,719 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:19:53,720 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:19:53,723 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:19:53,723 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:19:53,726 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:19:53,727 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:19:53,737 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:19:53,738 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:19:53,739 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:19:53,741 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:19:53,741 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:19:53,741 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:19:53,746 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:19:53,747 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:19:53,747 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:19:53,748 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:19:53,751 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:19:53,751 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:19:53,752 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:19:53,752 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:19:53,752 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:19:53,753 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:19:53,755 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:19:53,755 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:19:53,773 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:19:53,773 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:19:53,773 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:19:53,774 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:19:53,775 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:19:53,775 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:19:53,776 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:19:53,776 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:19:53,776 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:19:53,776 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:19:53,776 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:19:53,776 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:19:53,777 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:19:53,777 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:19:53,777 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:19:53,777 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:19:53,777 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:19:53,777 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:19:53,780 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:19:53,781 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:19:53,781 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:19:53,830 INFO ]: Repository-Root is: /tmp [2018-06-22 11:19:53,847 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:19:53,850 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:19:53,852 INFO ]: Initializing SmtParser... [2018-06-22 11:19:53,852 INFO ]: SmtParser initialized [2018-06-22 11:19:53,853 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/021b-horn.smt2 [2018-06-22 11:19:53,854 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2018-06-22 11:19:53,935 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/021b-horn.smt2 unknown [2018-06-22 11:19:54,105 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/021b-horn.smt2 [2018-06-22 11:19:54,110 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:19:54,119 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:19:54,119 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:19:54,119 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:19:54,119 INFO ]: ChcToBoogie initialized [2018-06-22 11:19:54,123 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:19:54" (1/1) ... [2018-06-22 11:19:54,167 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:19:54 Unit [2018-06-22 11:19:54,167 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:19:54,168 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:19:54,168 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:19:54,168 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:19:54,191 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:19:54" (1/1) ... [2018-06-22 11:19:54,191 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:19:54" (1/1) ... [2018-06-22 11:19:54,198 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:19:54" (1/1) ... [2018-06-22 11:19:54,199 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:19:54" (1/1) ... [2018-06-22 11:19:54,212 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:19:54" (1/1) ... [2018-06-22 11:19:54,213 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:19:54" (1/1) ... [2018-06-22 11:19:54,214 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:19:54" (1/1) ... [2018-06-22 11:19:54,216 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:19:54,216 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:19:54,216 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:19:54,216 INFO ]: RCFGBuilder initialized [2018-06-22 11:19:54,217 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:19:54" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 11:19:54,235 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:19:54,235 INFO ]: Found specification of procedure False [2018-06-22 11:19:54,235 INFO ]: Found implementation of procedure False [2018-06-22 11:19:54,235 INFO ]: Specification and implementation of procedure REC_f_ given in one single declaration [2018-06-22 11:19:54,235 INFO ]: Found specification of procedure REC_f_ [2018-06-22 11:19:54,235 INFO ]: Found implementation of procedure REC_f_ [2018-06-22 11:19:54,235 INFO ]: Specification and implementation of procedure REC__f given in one single declaration [2018-06-22 11:19:54,235 INFO ]: Found specification of procedure REC__f [2018-06-22 11:19:54,235 INFO ]: Found implementation of procedure REC__f [2018-06-22 11:19:54,235 INFO ]: Specification and implementation of procedure REC_f_f given in one single declaration [2018-06-22 11:19:54,235 INFO ]: Found specification of procedure REC_f_f [2018-06-22 11:19:54,235 INFO ]: Found implementation of procedure REC_f_f [2018-06-22 11:19:54,235 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:19:54,235 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:19:54,235 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:19:54,620 INFO ]: Using library mode [2018-06-22 11:19:54,621 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:19:54 BoogieIcfgContainer [2018-06-22 11:19:54,621 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:19:54,622 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:19:54,622 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:19:54,626 INFO ]: TraceAbstraction initialized [2018-06-22 11:19:54,626 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:19:54" (1/3) ... [2018-06-22 11:19:54,627 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c28efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:19:54, skipping insertion in model container [2018-06-22 11:19:54,627 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:19:54" (2/3) ... [2018-06-22 11:19:54,627 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c28efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:19:54, skipping insertion in model container [2018-06-22 11:19:54,627 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:19:54" (3/3) ... [2018-06-22 11:19:54,629 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:19:54,638 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:19:54,646 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:19:54,684 INFO ]: Using default assertion order modulation [2018-06-22 11:19:54,685 INFO ]: Interprodecural is true [2018-06-22 11:19:54,685 INFO ]: Hoare is false [2018-06-22 11:19:54,685 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:19:54,685 INFO ]: Backedges is TWOTRACK [2018-06-22 11:19:54,685 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:19:54,685 INFO ]: Difference is false [2018-06-22 11:19:54,685 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:19:54,685 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:19:54,699 INFO ]: Start isEmpty. Operand 33 states. [2018-06-22 11:19:54,720 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:19:54,720 INFO ]: Found error trace [2018-06-22 11:19:54,721 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:19:54,722 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:19:54,726 INFO ]: Analyzing trace with hash 103637743, now seen corresponding path program 1 times [2018-06-22 11:19:54,727 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:19:54,727 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:19:54,759 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:54,759 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:19:54,759 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:54,771 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:19:54,794 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:19:54,797 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:19:54,797 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:19:54,799 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:19:54,811 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:19:54,811 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:19:54,813 INFO ]: Start difference. First operand 33 states. Second operand 2 states. [2018-06-22 11:19:54,844 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:19:54,844 INFO ]: Finished difference Result 27 states and 40 transitions. [2018-06-22 11:19:54,844 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:19:54,847 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:19:54,847 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:19:54,859 INFO ]: With dead ends: 27 [2018-06-22 11:19:54,859 INFO ]: Without dead ends: 27 [2018-06-22 11:19:54,861 INFO ]: 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 [2018-06-22 11:19:54,874 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 11:19:54,899 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 11:19:54,900 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 11:19:54,901 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 40 transitions. [2018-06-22 11:19:54,902 INFO ]: Start accepts. Automaton has 27 states and 40 transitions. Word has length 5 [2018-06-22 11:19:54,902 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:19:54,902 INFO ]: Abstraction has 27 states and 40 transitions. [2018-06-22 11:19:54,903 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:19:54,903 INFO ]: Start isEmpty. Operand 27 states and 40 transitions. [2018-06-22 11:19:54,905 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:19:54,905 INFO ]: Found error trace [2018-06-22 11:19:54,905 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:19:54,905 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:19:54,905 INFO ]: Analyzing trace with hash 453913835, now seen corresponding path program 1 times [2018-06-22 11:19:54,905 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:19:54,906 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:19:54,906 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:54,906 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:19:54,906 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:54,951 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:19:55,363 WARN ]: Spent 339.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2018-06-22 11:19:55,509 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:19:55,509 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:19:55,509 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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) [2018-06-22 11:19:55,524 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:19:55,560 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:19:55,570 INFO ]: Computing forward predicates... [2018-06-22 11:19:55,946 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:19:55,966 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:19:55,966 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-06-22 11:19:55,966 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:19:55,966 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:19:55,967 INFO ]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:19:55,967 INFO ]: Start difference. First operand 27 states and 40 transitions. Second operand 10 states. [2018-06-22 11:19:56,230 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:19:56,230 INFO ]: Finished difference Result 32 states and 49 transitions. [2018-06-22 11:19:56,231 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:19:56,231 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 11:19:56,231 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:19:56,232 INFO ]: With dead ends: 32 [2018-06-22 11:19:56,232 INFO ]: Without dead ends: 32 [2018-06-22 11:19:56,233 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:19:56,233 INFO ]: Start minimizeSevpa. Operand 32 states. [2018-06-22 11:19:56,246 INFO ]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-06-22 11:19:56,246 INFO ]: Start removeUnreachable. Operand 30 states. [2018-06-22 11:19:56,248 INFO ]: Finished removeUnreachable. Reduced from 30 states to 30 states and 47 transitions. [2018-06-22 11:19:56,248 INFO ]: Start accepts. Automaton has 30 states and 47 transitions. Word has length 13 [2018-06-22 11:19:56,249 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:19:56,249 INFO ]: Abstraction has 30 states and 47 transitions. [2018-06-22 11:19:56,249 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:19:56,249 INFO ]: Start isEmpty. Operand 30 states and 47 transitions. [2018-06-22 11:19:56,251 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:19:56,251 INFO ]: Found error trace [2018-06-22 11:19:56,251 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:19:56,251 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:19:56,251 INFO ]: Analyzing trace with hash -1579439501, now seen corresponding path program 1 times [2018-06-22 11:19:56,251 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:19:56,251 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:19:56,254 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:56,254 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:19:56,254 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:56,266 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:19:56,448 INFO ]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:19:56,448 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:19:56,448 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-06-22 11:19:56,465 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:19:56,480 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:19:56,482 INFO ]: Computing forward predicates... [2018-06-22 11:19:56,531 INFO ]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:19:56,550 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:19:56,550 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 11:19:56,550 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:19:56,550 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:19:56,551 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:19:56,551 INFO ]: Start difference. First operand 30 states and 47 transitions. Second operand 8 states. [2018-06-22 11:19:56,962 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:19:56,962 INFO ]: Finished difference Result 34 states and 53 transitions. [2018-06-22 11:19:56,963 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:19:56,963 INFO ]: Start accepts. Automaton has 8 states. Word has length 21 [2018-06-22 11:19:56,963 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:19:56,964 INFO ]: With dead ends: 34 [2018-06-22 11:19:56,964 INFO ]: Without dead ends: 34 [2018-06-22 11:19:56,965 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:19:56,965 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-22 11:19:56,972 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-06-22 11:19:56,972 INFO ]: Start removeUnreachable. Operand 32 states. [2018-06-22 11:19:56,973 INFO ]: Finished removeUnreachable. Reduced from 32 states to 32 states and 51 transitions. [2018-06-22 11:19:56,973 INFO ]: Start accepts. Automaton has 32 states and 51 transitions. Word has length 21 [2018-06-22 11:19:56,974 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:19:56,974 INFO ]: Abstraction has 32 states and 51 transitions. [2018-06-22 11:19:56,974 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:19:56,974 INFO ]: Start isEmpty. Operand 32 states and 51 transitions. [2018-06-22 11:19:56,976 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:19:56,976 INFO ]: Found error trace [2018-06-22 11:19:56,976 INFO ]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:19:56,976 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:19:56,976 INFO ]: Analyzing trace with hash 924984051, now seen corresponding path program 1 times [2018-06-22 11:19:56,976 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:19:56,976 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:19:56,977 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:56,977 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:19:56,977 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:56,997 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:19:57,305 INFO ]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:19:57,305 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:19:57,305 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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) [2018-06-22 11:19:57,319 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:19:57,334 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:19:57,337 INFO ]: Computing forward predicates... [2018-06-22 11:19:57,621 INFO ]: Checked inductivity of 18 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:19:57,641 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:19:57,641 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2018-06-22 11:19:57,641 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:19:57,641 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:19:57,641 INFO ]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:19:57,641 INFO ]: Start difference. First operand 32 states and 51 transitions. Second operand 16 states. [2018-06-22 11:19:58,667 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:19:58,667 INFO ]: Finished difference Result 49 states and 110 transitions. [2018-06-22 11:19:58,668 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:19:58,668 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 11:19:58,668 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:19:58,670 INFO ]: With dead ends: 49 [2018-06-22 11:19:58,670 INFO ]: Without dead ends: 49 [2018-06-22 11:19:58,671 INFO ]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2018-06-22 11:19:58,671 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-22 11:19:58,688 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 41. [2018-06-22 11:19:58,688 INFO ]: Start removeUnreachable. Operand 41 states. [2018-06-22 11:19:58,690 INFO ]: Finished removeUnreachable. Reduced from 41 states to 41 states and 83 transitions. [2018-06-22 11:19:58,690 INFO ]: Start accepts. Automaton has 41 states and 83 transitions. Word has length 21 [2018-06-22 11:19:58,690 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:19:58,690 INFO ]: Abstraction has 41 states and 83 transitions. [2018-06-22 11:19:58,690 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:19:58,690 INFO ]: Start isEmpty. Operand 41 states and 83 transitions. [2018-06-22 11:19:58,693 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:19:58,693 INFO ]: Found error trace [2018-06-22 11:19:58,693 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:19:58,693 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:19:58,693 INFO ]: Analyzing trace with hash -746494853, now seen corresponding path program 1 times [2018-06-22 11:19:58,693 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:19:58,693 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:19:58,694 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:58,694 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:19:58,694 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:58,706 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:19:58,779 INFO ]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-06-22 11:19:58,779 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:19:58,779 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-06-22 11:19:58,786 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:19:58,809 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:19:58,812 INFO ]: Computing forward predicates... [2018-06-22 11:19:59,012 INFO ]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:19:59,031 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:19:59,031 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2018-06-22 11:19:59,031 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:19:59,031 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:19:59,031 INFO ]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:19:59,031 INFO ]: Start difference. First operand 41 states and 83 transitions. Second operand 13 states. [2018-06-22 11:19:59,489 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:19:59,489 INFO ]: Finished difference Result 54 states and 134 transitions. [2018-06-22 11:19:59,490 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:19:59,490 INFO ]: Start accepts. Automaton has 13 states. Word has length 29 [2018-06-22 11:19:59,490 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:19:59,492 INFO ]: With dead ends: 54 [2018-06-22 11:19:59,492 INFO ]: Without dead ends: 54 [2018-06-22 11:19:59,492 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:19:59,492 INFO ]: Start minimizeSevpa. Operand 54 states. [2018-06-22 11:19:59,510 INFO ]: Finished minimizeSevpa. Reduced states from 54 to 42. [2018-06-22 11:19:59,510 INFO ]: Start removeUnreachable. Operand 42 states. [2018-06-22 11:19:59,511 INFO ]: Finished removeUnreachable. Reduced from 42 states to 42 states and 90 transitions. [2018-06-22 11:19:59,511 INFO ]: Start accepts. Automaton has 42 states and 90 transitions. Word has length 29 [2018-06-22 11:19:59,512 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:19:59,512 INFO ]: Abstraction has 42 states and 90 transitions. [2018-06-22 11:19:59,512 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:19:59,512 INFO ]: Start isEmpty. Operand 42 states and 90 transitions. [2018-06-22 11:19:59,514 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:19:59,514 INFO ]: Found error trace [2018-06-22 11:19:59,514 INFO ]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:19:59,514 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:19:59,514 INFO ]: Analyzing trace with hash 1122660483, now seen corresponding path program 2 times [2018-06-22 11:19:59,514 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:19:59,514 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:19:59,515 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:59,515 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:19:59,515 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:59,528 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:19:59,596 INFO ]: Checked inductivity of 50 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:19:59,596 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:19:59,596 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-06-22 11:19:59,602 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:19:59,624 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:19:59,624 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:19:59,660 INFO ]: Computing forward predicates... [2018-06-22 11:19:59,675 INFO ]: Checked inductivity of 50 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 11:19:59,694 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:19:59,694 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2018-06-22 11:19:59,695 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:19:59,695 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:19:59,695 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:19:59,695 INFO ]: Start difference. First operand 42 states and 90 transitions. Second operand 8 states. [2018-06-22 11:19:59,933 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:19:59,933 INFO ]: Finished difference Result 60 states and 171 transitions. [2018-06-22 11:19:59,934 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:19:59,934 INFO ]: Start accepts. Automaton has 8 states. Word has length 37 [2018-06-22 11:19:59,934 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:19:59,937 INFO ]: With dead ends: 60 [2018-06-22 11:19:59,937 INFO ]: Without dead ends: 60 [2018-06-22 11:19:59,937 INFO ]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:19:59,937 INFO ]: Start minimizeSevpa. Operand 60 states. [2018-06-22 11:19:59,954 INFO ]: Finished minimizeSevpa. Reduced states from 60 to 58. [2018-06-22 11:19:59,954 INFO ]: Start removeUnreachable. Operand 58 states. [2018-06-22 11:19:59,956 INFO ]: Finished removeUnreachable. Reduced from 58 states to 58 states and 169 transitions. [2018-06-22 11:19:59,957 INFO ]: Start accepts. Automaton has 58 states and 169 transitions. Word has length 37 [2018-06-22 11:19:59,957 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:19:59,957 INFO ]: Abstraction has 58 states and 169 transitions. [2018-06-22 11:19:59,957 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:19:59,957 INFO ]: Start isEmpty. Operand 58 states and 169 transitions. [2018-06-22 11:19:59,960 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:19:59,960 INFO ]: Found error trace [2018-06-22 11:19:59,960 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:19:59,960 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:19:59,960 INFO ]: Analyzing trace with hash -1713026181, now seen corresponding path program 3 times [2018-06-22 11:19:59,960 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:19:59,960 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:19:59,961 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:59,961 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:19:59,961 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:19:59,970 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:00,060 INFO ]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:20:00,060 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:00,060 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-06-22 11:20:00,076 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:20:00,104 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 11:20:00,104 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:00,106 INFO ]: Computing forward predicates... [2018-06-22 11:20:00,217 INFO ]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:20:00,237 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:00,237 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2018-06-22 11:20:00,237 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:20:00,238 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:20:00,238 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:20:00,238 INFO ]: Start difference. First operand 58 states and 169 transitions. Second operand 13 states. [2018-06-22 11:20:00,703 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:00,703 INFO ]: Finished difference Result 126 states and 658 transitions. [2018-06-22 11:20:00,703 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:20:00,703 INFO ]: Start accepts. Automaton has 13 states. Word has length 29 [2018-06-22 11:20:00,703 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:00,709 INFO ]: With dead ends: 126 [2018-06-22 11:20:00,710 INFO ]: Without dead ends: 126 [2018-06-22 11:20:00,710 INFO ]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2018-06-22 11:20:00,710 INFO ]: Start minimizeSevpa. Operand 126 states. [2018-06-22 11:20:00,772 INFO ]: Finished minimizeSevpa. Reduced states from 126 to 85. [2018-06-22 11:20:00,772 INFO ]: Start removeUnreachable. Operand 85 states. [2018-06-22 11:20:00,776 INFO ]: Finished removeUnreachable. Reduced from 85 states to 85 states and 371 transitions. [2018-06-22 11:20:00,776 INFO ]: Start accepts. Automaton has 85 states and 371 transitions. Word has length 29 [2018-06-22 11:20:00,776 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:00,776 INFO ]: Abstraction has 85 states and 371 transitions. [2018-06-22 11:20:00,776 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:20:00,776 INFO ]: Start isEmpty. Operand 85 states and 371 transitions. [2018-06-22 11:20:00,780 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:20:00,780 INFO ]: Found error trace [2018-06-22 11:20:00,780 INFO ]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:00,780 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:00,781 INFO ]: Analyzing trace with hash 1585282435, now seen corresponding path program 4 times [2018-06-22 11:20:00,781 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:00,781 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:00,781 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:00,781 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:00,781 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:00,792 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:00,890 INFO ]: Checked inductivity of 50 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-06-22 11:20:00,890 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:00,890 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-06-22 11:20:00,896 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:20:00,920 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:20:00,920 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:00,923 INFO ]: Computing forward predicates... [2018-06-22 11:20:01,019 INFO ]: Checked inductivity of 50 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-06-22 11:20:01,038 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:01,038 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2018-06-22 11:20:01,038 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:20:01,039 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:20:01,039 INFO ]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:20:01,039 INFO ]: Start difference. First operand 85 states and 371 transitions. Second operand 16 states. [2018-06-22 11:20:01,597 WARN ]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-22 11:20:02,210 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:02,210 INFO ]: Finished difference Result 126 states and 651 transitions. [2018-06-22 11:20:02,210 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:20:02,210 INFO ]: Start accepts. Automaton has 16 states. Word has length 37 [2018-06-22 11:20:02,211 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:02,215 INFO ]: With dead ends: 126 [2018-06-22 11:20:02,215 INFO ]: Without dead ends: 126 [2018-06-22 11:20:02,215 INFO ]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2018-06-22 11:20:02,216 INFO ]: Start minimizeSevpa. Operand 126 states. [2018-06-22 11:20:02,248 INFO ]: Finished minimizeSevpa. Reduced states from 126 to 92. [2018-06-22 11:20:02,249 INFO ]: Start removeUnreachable. Operand 92 states. [2018-06-22 11:20:02,251 INFO ]: Finished removeUnreachable. Reduced from 92 states to 92 states and 429 transitions. [2018-06-22 11:20:02,251 INFO ]: Start accepts. Automaton has 92 states and 429 transitions. Word has length 37 [2018-06-22 11:20:02,252 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:02,252 INFO ]: Abstraction has 92 states and 429 transitions. [2018-06-22 11:20:02,252 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:20:02,252 INFO ]: Start isEmpty. Operand 92 states and 429 transitions. [2018-06-22 11:20:02,256 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:20:02,256 INFO ]: Found error trace [2018-06-22 11:20:02,256 INFO ]: trace histogram [8, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:02,256 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:02,256 INFO ]: Analyzing trace with hash 1428968331, now seen corresponding path program 5 times [2018-06-22 11:20:02,256 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:02,256 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:02,257 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:02,257 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:02,257 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:02,270 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:02,528 INFO ]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 11:20:02,528 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:02,528 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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) [2018-06-22 11:20:02,544 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:02,657 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-22 11:20:02,657 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:02,661 INFO ]: Computing forward predicates... [2018-06-22 11:20:02,879 INFO ]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 11:20:02,914 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:02,914 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-06-22 11:20:02,915 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:20:02,915 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:20:02,915 INFO ]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:20:02,915 INFO ]: Start difference. First operand 92 states and 429 transitions. Second operand 13 states. [2018-06-22 11:20:03,706 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:03,706 INFO ]: Finished difference Result 136 states and 712 transitions. [2018-06-22 11:20:03,710 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:20:03,710 INFO ]: Start accepts. Automaton has 13 states. Word has length 45 [2018-06-22 11:20:03,710 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:03,714 INFO ]: With dead ends: 136 [2018-06-22 11:20:03,714 INFO ]: Without dead ends: 136 [2018-06-22 11:20:03,715 INFO ]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2018-06-22 11:20:03,715 INFO ]: Start minimizeSevpa. Operand 136 states. [2018-06-22 11:20:03,750 INFO ]: Finished minimizeSevpa. Reduced states from 136 to 102. [2018-06-22 11:20:03,750 INFO ]: Start removeUnreachable. Operand 102 states. [2018-06-22 11:20:03,754 INFO ]: Finished removeUnreachable. Reduced from 102 states to 102 states and 490 transitions. [2018-06-22 11:20:03,755 INFO ]: Start accepts. Automaton has 102 states and 490 transitions. Word has length 45 [2018-06-22 11:20:03,755 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:03,755 INFO ]: Abstraction has 102 states and 490 transitions. [2018-06-22 11:20:03,755 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:20:03,755 INFO ]: Start isEmpty. Operand 102 states and 490 transitions. [2018-06-22 11:20:03,760 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:20:03,760 INFO ]: Found error trace [2018-06-22 11:20:03,760 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:03,760 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:03,760 INFO ]: Analyzing trace with hash 412903305, now seen corresponding path program 1 times [2018-06-22 11:20:03,760 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:03,760 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:03,760 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:03,760 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:03,760 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:03,777 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:04,317 INFO ]: Checked inductivity of 21 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 11:20:04,317 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:04,317 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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) [2018-06-22 11:20:04,332 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:04,361 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:04,363 INFO ]: Computing forward predicates... [2018-06-22 11:20:04,678 INFO ]: Checked inductivity of 21 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 11:20:04,709 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:04,709 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-06-22 11:20:04,710 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:20:04,710 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:20:04,710 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:20:04,710 INFO ]: Start difference. First operand 102 states and 490 transitions. Second operand 8 states. [2018-06-22 11:20:05,577 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:05,577 INFO ]: Finished difference Result 133 states and 673 transitions. [2018-06-22 11:20:05,577 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:20:05,577 INFO ]: Start accepts. Automaton has 8 states. Word has length 29 [2018-06-22 11:20:05,577 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:05,581 INFO ]: With dead ends: 133 [2018-06-22 11:20:05,581 INFO ]: Without dead ends: 133 [2018-06-22 11:20:05,581 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:20:05,581 INFO ]: Start minimizeSevpa. Operand 133 states. [2018-06-22 11:20:05,620 INFO ]: Finished minimizeSevpa. Reduced states from 133 to 131. [2018-06-22 11:20:05,620 INFO ]: Start removeUnreachable. Operand 131 states. [2018-06-22 11:20:05,628 INFO ]: Finished removeUnreachable. Reduced from 131 states to 131 states and 671 transitions. [2018-06-22 11:20:05,628 INFO ]: Start accepts. Automaton has 131 states and 671 transitions. Word has length 29 [2018-06-22 11:20:05,628 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:05,628 INFO ]: Abstraction has 131 states and 671 transitions. [2018-06-22 11:20:05,628 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:20:05,628 INFO ]: Start isEmpty. Operand 131 states and 671 transitions. [2018-06-22 11:20:05,634 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:20:05,634 INFO ]: Found error trace [2018-06-22 11:20:05,634 INFO ]: 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] [2018-06-22 11:20:05,634 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:05,634 INFO ]: Analyzing trace with hash -7806839, now seen corresponding path program 1 times [2018-06-22 11:20:05,634 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:05,634 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:05,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:05,636 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:05,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:05,646 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:06,352 INFO ]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 11:20:06,352 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:06,352 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-06-22 11:20:06,360 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:06,370 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:06,371 INFO ]: Computing forward predicates... [2018-06-22 11:20:06,403 INFO ]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:20:06,424 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:20:06,424 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2018-06-22 11:20:06,425 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:20:06,425 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:20:06,425 INFO ]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:20:06,425 INFO ]: Start difference. First operand 131 states and 671 transitions. Second operand 10 states. [2018-06-22 11:20:06,965 WARN ]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 11:20:07,514 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:07,514 INFO ]: Finished difference Result 158 states and 871 transitions. [2018-06-22 11:20:07,515 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 11:20:07,515 INFO ]: Start accepts. Automaton has 10 states. Word has length 29 [2018-06-22 11:20:07,515 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:07,519 INFO ]: With dead ends: 158 [2018-06-22 11:20:07,519 INFO ]: Without dead ends: 158 [2018-06-22 11:20:07,520 INFO ]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:20:07,520 INFO ]: Start minimizeSevpa. Operand 158 states. [2018-06-22 11:20:07,566 INFO ]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-06-22 11:20:07,566 INFO ]: Start removeUnreachable. Operand 154 states. [2018-06-22 11:20:07,570 INFO ]: Finished removeUnreachable. Reduced from 154 states to 154 states and 853 transitions. [2018-06-22 11:20:07,570 INFO ]: Start accepts. Automaton has 154 states and 853 transitions. Word has length 29 [2018-06-22 11:20:07,570 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:07,570 INFO ]: Abstraction has 154 states and 853 transitions. [2018-06-22 11:20:07,570 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:20:07,570 INFO ]: Start isEmpty. Operand 154 states and 853 transitions. [2018-06-22 11:20:07,578 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-22 11:20:07,578 INFO ]: Found error trace [2018-06-22 11:20:07,578 INFO ]: trace histogram [10, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:07,578 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:07,578 INFO ]: Analyzing trace with hash 1651690899, now seen corresponding path program 6 times [2018-06-22 11:20:07,578 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:07,578 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:07,579 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:07,579 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:07,579 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:07,593 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:07,737 INFO ]: Checked inductivity of 150 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-06-22 11:20:07,737 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:07,737 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-06-22 11:20:07,743 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 11:20:07,773 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-06-22 11:20:07,773 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:07,775 INFO ]: Computing forward predicates... [2018-06-22 11:20:08,111 INFO ]: Checked inductivity of 150 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-06-22 11:20:08,132 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:08,132 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2018-06-22 11:20:08,132 INFO ]: Interpolant automaton has 27 states [2018-06-22 11:20:08,132 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-22 11:20:08,133 INFO ]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2018-06-22 11:20:08,133 INFO ]: Start difference. First operand 154 states and 853 transitions. Second operand 27 states. [2018-06-22 11:20:13,710 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:13,710 INFO ]: Finished difference Result 431 states and 3413 transitions. [2018-06-22 11:20:13,711 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-06-22 11:20:13,711 INFO ]: Start accepts. Automaton has 27 states. Word has length 53 [2018-06-22 11:20:13,711 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:13,728 INFO ]: With dead ends: 431 [2018-06-22 11:20:13,728 INFO ]: Without dead ends: 431 [2018-06-22 11:20:13,731 INFO ]: 0 DeclaredPredicates, 141 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2290 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1565, Invalid=7365, Unknown=0, NotChecked=0, Total=8930 [2018-06-22 11:20:13,731 INFO ]: Start minimizeSevpa. Operand 431 states. [2018-06-22 11:20:13,884 INFO ]: Finished minimizeSevpa. Reduced states from 431 to 301. [2018-06-22 11:20:13,884 INFO ]: Start removeUnreachable. Operand 301 states. [2018-06-22 11:20:13,895 INFO ]: Finished removeUnreachable. Reduced from 301 states to 301 states and 2497 transitions. [2018-06-22 11:20:13,895 INFO ]: Start accepts. Automaton has 301 states and 2497 transitions. Word has length 53 [2018-06-22 11:20:13,896 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:13,896 INFO ]: Abstraction has 301 states and 2497 transitions. [2018-06-22 11:20:13,896 INFO ]: Interpolant automaton has 27 states. [2018-06-22 11:20:13,896 INFO ]: Start isEmpty. Operand 301 states and 2497 transitions. [2018-06-22 11:20:13,913 INFO ]: Finished isEmpty. Found accepting run of length 78 [2018-06-22 11:20:13,913 INFO ]: Found error trace [2018-06-22 11:20:13,913 INFO ]: trace histogram [8, 6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:13,913 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:13,914 INFO ]: Analyzing trace with hash -1172652987, now seen corresponding path program 1 times [2018-06-22 11:20:13,914 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:13,914 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:13,915 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:13,915 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:13,915 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:13,931 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:14,671 INFO ]: Checked inductivity of 155 backedges. 22 proven. 36 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-06-22 11:20:14,671 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:14,671 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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) [2018-06-22 11:20:14,684 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:14,724 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:14,727 INFO ]: Computing forward predicates... [2018-06-22 11:20:14,813 INFO ]: Checked inductivity of 155 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-06-22 11:20:14,835 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:14,835 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 11:20:14,836 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:20:14,836 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:20:14,836 INFO ]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:20:14,836 INFO ]: Start difference. First operand 301 states and 2497 transitions. Second operand 14 states. [2018-06-22 11:20:15,342 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:15,342 INFO ]: Finished difference Result 384 states and 3059 transitions. [2018-06-22 11:20:15,373 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 11:20:15,373 INFO ]: Start accepts. Automaton has 14 states. Word has length 77 [2018-06-22 11:20:15,374 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:15,395 INFO ]: With dead ends: 384 [2018-06-22 11:20:15,395 INFO ]: Without dead ends: 383 [2018-06-22 11:20:15,396 INFO ]: 0 DeclaredPredicates, 99 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2018-06-22 11:20:15,396 INFO ]: Start minimizeSevpa. Operand 383 states. [2018-06-22 11:20:15,616 INFO ]: Finished minimizeSevpa. Reduced states from 383 to 301. [2018-06-22 11:20:15,616 INFO ]: Start removeUnreachable. Operand 301 states. [2018-06-22 11:20:15,626 INFO ]: Finished removeUnreachable. Reduced from 301 states to 301 states and 2315 transitions. [2018-06-22 11:20:15,626 INFO ]: Start accepts. Automaton has 301 states and 2315 transitions. Word has length 77 [2018-06-22 11:20:15,627 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:15,627 INFO ]: Abstraction has 301 states and 2315 transitions. [2018-06-22 11:20:15,627 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:20:15,627 INFO ]: Start isEmpty. Operand 301 states and 2315 transitions. [2018-06-22 11:20:15,647 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:20:15,647 INFO ]: Found error trace [2018-06-22 11:20:15,648 INFO ]: trace histogram [12, 6, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:15,648 INFO ]: === Iteration 14 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:15,648 INFO ]: Analyzing trace with hash 345107355, now seen corresponding path program 7 times [2018-06-22 11:20:15,648 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:15,648 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:15,648 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:15,648 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:15,648 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:15,665 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:16,804 INFO ]: Checked inductivity of 221 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-06-22 11:20:16,805 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:16,805 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-06-22 11:20:16,810 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:16,832 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:16,835 INFO ]: Computing forward predicates... [2018-06-22 11:20:16,910 INFO ]: Checked inductivity of 221 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-06-22 11:20:16,929 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:16,929 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 19 [2018-06-22 11:20:16,929 INFO ]: Interpolant automaton has 19 states [2018-06-22 11:20:16,929 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 11:20:16,929 INFO ]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:20:16,930 INFO ]: Start difference. First operand 301 states and 2315 transitions. Second operand 19 states. [2018-06-22 11:20:17,404 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:17,404 INFO ]: Finished difference Result 397 states and 3086 transitions. [2018-06-22 11:20:17,405 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 11:20:17,405 INFO ]: Start accepts. Automaton has 19 states. Word has length 61 [2018-06-22 11:20:17,405 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:17,417 INFO ]: With dead ends: 397 [2018-06-22 11:20:17,417 INFO ]: Without dead ends: 397 [2018-06-22 11:20:17,417 INFO ]: 0 DeclaredPredicates, 98 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2018-06-22 11:20:17,417 INFO ]: Start minimizeSevpa. Operand 397 states. [2018-06-22 11:20:17,606 INFO ]: Finished minimizeSevpa. Reduced states from 397 to 315. [2018-06-22 11:20:17,606 INFO ]: Start removeUnreachable. Operand 315 states. [2018-06-22 11:20:17,617 INFO ]: Finished removeUnreachable. Reduced from 315 states to 315 states and 2454 transitions. [2018-06-22 11:20:17,617 INFO ]: Start accepts. Automaton has 315 states and 2454 transitions. Word has length 61 [2018-06-22 11:20:17,618 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:17,618 INFO ]: Abstraction has 315 states and 2454 transitions. [2018-06-22 11:20:17,618 INFO ]: Interpolant automaton has 19 states. [2018-06-22 11:20:17,618 INFO ]: Start isEmpty. Operand 315 states and 2454 transitions. [2018-06-22 11:20:17,636 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 11:20:17,636 INFO ]: Found error trace [2018-06-22 11:20:17,636 INFO ]: trace histogram [14, 7, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:17,636 INFO ]: === Iteration 15 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:17,637 INFO ]: Analyzing trace with hash 1590787235, now seen corresponding path program 8 times [2018-06-22 11:20:17,637 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:17,637 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:17,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:17,637 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:17,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:17,651 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:17,901 INFO ]: Checked inductivity of 306 backedges. 64 proven. 42 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-06-22 11:20:17,901 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:17,901 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:17,909 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:20:17,937 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:20:17,937 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:17,939 INFO ]: Computing forward predicates... [2018-06-22 11:20:17,988 INFO ]: Checked inductivity of 306 backedges. 50 proven. 91 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-06-22 11:20:18,007 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:18,007 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 12 [2018-06-22 11:20:18,007 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:20:18,007 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:20:18,007 INFO ]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:20:18,008 INFO ]: Start difference. First operand 315 states and 2454 transitions. Second operand 12 states. [2018-06-22 11:20:18,300 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:18,300 INFO ]: Finished difference Result 376 states and 2686 transitions. [2018-06-22 11:20:18,301 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:20:18,301 INFO ]: Start accepts. Automaton has 12 states. Word has length 69 [2018-06-22 11:20:18,301 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:18,314 INFO ]: With dead ends: 376 [2018-06-22 11:20:18,314 INFO ]: Without dead ends: 376 [2018-06-22 11:20:18,314 INFO ]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2018-06-22 11:20:18,318 INFO ]: Start minimizeSevpa. Operand 376 states. [2018-06-22 11:20:18,431 INFO ]: Finished minimizeSevpa. Reduced states from 376 to 255. [2018-06-22 11:20:18,431 INFO ]: Start removeUnreachable. Operand 255 states. [2018-06-22 11:20:18,440 INFO ]: Finished removeUnreachable. Reduced from 255 states to 255 states and 1673 transitions. [2018-06-22 11:20:18,440 INFO ]: Start accepts. Automaton has 255 states and 1673 transitions. Word has length 69 [2018-06-22 11:20:18,440 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:18,440 INFO ]: Abstraction has 255 states and 1673 transitions. [2018-06-22 11:20:18,440 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:20:18,440 INFO ]: Start isEmpty. Operand 255 states and 1673 transitions. [2018-06-22 11:20:18,453 INFO ]: Finished isEmpty. Found accepting run of length 78 [2018-06-22 11:20:18,453 INFO ]: Found error trace [2018-06-22 11:20:18,453 INFO ]: trace histogram [12, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2018-06-22 11:20:18,453 INFO ]: === Iteration 16 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:18,453 INFO ]: Analyzing trace with hash 1523470839, now seen corresponding path program 1 times [2018-06-22 11:20:18,453 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:18,453 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:18,454 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:18,454 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:18,454 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:18,466 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:18,588 INFO ]: Checked inductivity of 239 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-06-22 11:20:18,588 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:18,588 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:18,595 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:18,623 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:18,626 INFO ]: Computing forward predicates... [2018-06-22 11:20:18,765 INFO ]: Checked inductivity of 239 backedges. 117 proven. 18 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-06-22 11:20:18,790 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:18,790 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-06-22 11:20:18,790 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:20:18,790 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:20:18,790 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:20:18,790 INFO ]: Start difference. First operand 255 states and 1673 transitions. Second operand 14 states. [2018-06-22 11:20:19,289 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:19,289 INFO ]: Finished difference Result 430 states and 3390 transitions. [2018-06-22 11:20:19,289 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:20:19,289 INFO ]: Start accepts. Automaton has 14 states. Word has length 77 [2018-06-22 11:20:19,289 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:19,300 INFO ]: With dead ends: 430 [2018-06-22 11:20:19,300 INFO ]: Without dead ends: 430 [2018-06-22 11:20:19,300 INFO ]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2018-06-22 11:20:19,300 INFO ]: Start minimizeSevpa. Operand 430 states. [2018-06-22 11:20:19,499 INFO ]: Finished minimizeSevpa. Reduced states from 430 to 257. [2018-06-22 11:20:19,499 INFO ]: Start removeUnreachable. Operand 257 states. [2018-06-22 11:20:19,507 INFO ]: Finished removeUnreachable. Reduced from 257 states to 257 states and 1693 transitions. [2018-06-22 11:20:19,507 INFO ]: Start accepts. Automaton has 257 states and 1693 transitions. Word has length 77 [2018-06-22 11:20:19,507 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:19,507 INFO ]: Abstraction has 257 states and 1693 transitions. [2018-06-22 11:20:19,507 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:20:19,507 INFO ]: Start isEmpty. Operand 257 states and 1693 transitions. [2018-06-22 11:20:19,519 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:20:19,519 INFO ]: Found error trace [2018-06-22 11:20:19,519 INFO ]: trace histogram [8, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:19,519 INFO ]: === Iteration 17 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:19,519 INFO ]: Analyzing trace with hash -1980506137, now seen corresponding path program 2 times [2018-06-22 11:20:19,519 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:19,519 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:19,520 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:19,520 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:19,520 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:19,530 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:19,937 INFO ]: Checked inductivity of 111 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-06-22 11:20:19,937 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:19,937 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:19,943 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:20:19,973 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:20:19,973 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:19,975 INFO ]: Computing forward predicates... [2018-06-22 11:20:20,039 INFO ]: Checked inductivity of 111 backedges. 51 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-06-22 11:20:20,057 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:20,058 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2018-06-22 11:20:20,058 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:20:20,058 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:20:20,058 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:20:20,058 INFO ]: Start difference. First operand 257 states and 1693 transitions. Second operand 12 states. [2018-06-22 11:20:21,265 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:21,265 INFO ]: Finished difference Result 464 states and 4519 transitions. [2018-06-22 11:20:21,265 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 11:20:21,265 INFO ]: Start accepts. Automaton has 12 states. Word has length 61 [2018-06-22 11:20:21,265 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:21,278 INFO ]: With dead ends: 464 [2018-06-22 11:20:21,278 INFO ]: Without dead ends: 464 [2018-06-22 11:20:21,278 INFO ]: 0 DeclaredPredicates, 88 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2018-06-22 11:20:21,279 INFO ]: Start minimizeSevpa. Operand 464 states. [2018-06-22 11:20:21,443 INFO ]: Finished minimizeSevpa. Reduced states from 464 to 294. [2018-06-22 11:20:21,443 INFO ]: Start removeUnreachable. Operand 294 states. [2018-06-22 11:20:21,454 INFO ]: Finished removeUnreachable. Reduced from 294 states to 294 states and 2338 transitions. [2018-06-22 11:20:21,454 INFO ]: Start accepts. Automaton has 294 states and 2338 transitions. Word has length 61 [2018-06-22 11:20:21,454 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:21,454 INFO ]: Abstraction has 294 states and 2338 transitions. [2018-06-22 11:20:21,454 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:20:21,454 INFO ]: Start isEmpty. Operand 294 states and 2338 transitions. [2018-06-22 11:20:21,466 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 11:20:21,466 INFO ]: Found error trace [2018-06-22 11:20:21,466 INFO ]: trace histogram [14, 7, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:21,466 INFO ]: === Iteration 18 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:21,466 INFO ]: Analyzing trace with hash 864726435, now seen corresponding path program 9 times [2018-06-22 11:20:21,466 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:21,466 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:21,467 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:21,467 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:21,467 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:21,478 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:22,366 INFO ]: Checked inductivity of 306 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-06-22 11:20:22,366 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:22,366 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:22,371 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:20:22,400 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-06-22 11:20:22,400 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:22,403 INFO ]: Computing forward predicates... [2018-06-22 11:20:22,709 INFO ]: Checked inductivity of 306 backedges. 110 proven. 22 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-06-22 11:20:22,728 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:22,728 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 23 [2018-06-22 11:20:22,729 INFO ]: Interpolant automaton has 23 states [2018-06-22 11:20:22,729 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-22 11:20:22,729 INFO ]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2018-06-22 11:20:22,729 INFO ]: Start difference. First operand 294 states and 2338 transitions. Second operand 23 states. [2018-06-22 11:20:23,482 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:23,483 INFO ]: Finished difference Result 378 states and 2774 transitions. [2018-06-22 11:20:23,483 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-06-22 11:20:23,483 INFO ]: Start accepts. Automaton has 23 states. Word has length 69 [2018-06-22 11:20:23,483 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:23,490 INFO ]: With dead ends: 378 [2018-06-22 11:20:23,490 INFO ]: Without dead ends: 378 [2018-06-22 11:20:23,491 INFO ]: 0 DeclaredPredicates, 122 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=432, Invalid=1638, Unknown=0, NotChecked=0, Total=2070 [2018-06-22 11:20:23,491 INFO ]: Start minimizeSevpa. Operand 378 states. [2018-06-22 11:20:23,552 INFO ]: Finished minimizeSevpa. Reduced states from 378 to 302. [2018-06-22 11:20:23,552 INFO ]: Start removeUnreachable. Operand 302 states. [2018-06-22 11:20:23,563 INFO ]: Finished removeUnreachable. Reduced from 302 states to 302 states and 2357 transitions. [2018-06-22 11:20:23,563 INFO ]: Start accepts. Automaton has 302 states and 2357 transitions. Word has length 69 [2018-06-22 11:20:23,563 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:23,563 INFO ]: Abstraction has 302 states and 2357 transitions. [2018-06-22 11:20:23,563 INFO ]: Interpolant automaton has 23 states. [2018-06-22 11:20:23,563 INFO ]: Start isEmpty. Operand 302 states and 2357 transitions. [2018-06-22 11:20:23,577 INFO ]: Finished isEmpty. Found accepting run of length 102 [2018-06-22 11:20:23,577 INFO ]: Found error trace [2018-06-22 11:20:23,577 INFO ]: trace histogram [22, 11, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:23,577 INFO ]: === Iteration 19 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:23,578 INFO ]: Analyzing trace with hash 1573781969, now seen corresponding path program 2 times [2018-06-22 11:20:23,578 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:23,578 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:23,579 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:23,579 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:23,579 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:23,595 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:23,770 INFO ]: Checked inductivity of 786 backedges. 25 proven. 366 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2018-06-22 11:20:23,770 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:23,770 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:23,778 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:20:23,816 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:20:23,816 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:23,819 INFO ]: Computing forward predicates... [2018-06-22 11:20:23,975 INFO ]: Checked inductivity of 786 backedges. 416 proven. 79 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-06-22 11:20:23,995 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:23,995 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2018-06-22 11:20:23,995 INFO ]: Interpolant automaton has 24 states [2018-06-22 11:20:23,995 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 11:20:23,995 INFO ]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2018-06-22 11:20:23,995 INFO ]: Start difference. First operand 302 states and 2357 transitions. Second operand 24 states. [2018-06-22 11:20:26,608 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:26,608 INFO ]: Finished difference Result 408 states and 2460 transitions. [2018-06-22 11:20:26,608 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-06-22 11:20:26,608 INFO ]: Start accepts. Automaton has 24 states. Word has length 101 [2018-06-22 11:20:26,608 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:26,615 INFO ]: With dead ends: 408 [2018-06-22 11:20:26,615 INFO ]: Without dead ends: 408 [2018-06-22 11:20:26,617 INFO ]: 0 DeclaredPredicates, 173 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=968, Invalid=4582, Unknown=0, NotChecked=0, Total=5550 [2018-06-22 11:20:26,617 INFO ]: Start minimizeSevpa. Operand 408 states. [2018-06-22 11:20:26,694 INFO ]: Finished minimizeSevpa. Reduced states from 408 to 305. [2018-06-22 11:20:26,694 INFO ]: Start removeUnreachable. Operand 305 states. [2018-06-22 11:20:26,703 INFO ]: Finished removeUnreachable. Reduced from 305 states to 305 states and 2048 transitions. [2018-06-22 11:20:26,703 INFO ]: Start accepts. Automaton has 305 states and 2048 transitions. Word has length 101 [2018-06-22 11:20:26,703 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:26,703 INFO ]: Abstraction has 305 states and 2048 transitions. [2018-06-22 11:20:26,703 INFO ]: Interpolant automaton has 24 states. [2018-06-22 11:20:26,703 INFO ]: Start isEmpty. Operand 305 states and 2048 transitions. [2018-06-22 11:20:26,718 INFO ]: Finished isEmpty. Found accepting run of length 78 [2018-06-22 11:20:26,718 INFO ]: Found error trace [2018-06-22 11:20:26,718 INFO ]: trace histogram [12, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2018-06-22 11:20:26,718 INFO ]: === Iteration 20 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:26,718 INFO ]: Analyzing trace with hash -1806044425, now seen corresponding path program 3 times [2018-06-22 11:20:26,718 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:26,718 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:26,719 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:26,719 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:26,719 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:26,730 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:27,142 INFO ]: Checked inductivity of 239 backedges. 66 proven. 58 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-06-22 11:20:27,142 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:27,142 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:27,150 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:20:27,169 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 11:20:27,169 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:27,172 INFO ]: Computing forward predicates... [2018-06-22 11:20:27,377 INFO ]: Checked inductivity of 239 backedges. 74 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-06-22 11:20:27,396 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:27,396 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2018-06-22 11:20:27,396 INFO ]: Interpolant automaton has 25 states [2018-06-22 11:20:27,396 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 11:20:27,397 INFO ]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2018-06-22 11:20:27,397 INFO ]: Start difference. First operand 305 states and 2048 transitions. Second operand 25 states. [2018-06-22 11:20:28,311 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:28,311 INFO ]: Finished difference Result 420 states and 2664 transitions. [2018-06-22 11:20:28,311 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-06-22 11:20:28,311 INFO ]: Start accepts. Automaton has 25 states. Word has length 77 [2018-06-22 11:20:28,312 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:28,319 INFO ]: With dead ends: 420 [2018-06-22 11:20:28,319 INFO ]: Without dead ends: 418 [2018-06-22 11:20:28,320 INFO ]: 0 DeclaredPredicates, 120 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=310, Invalid=1852, Unknown=0, NotChecked=0, Total=2162 [2018-06-22 11:20:28,320 INFO ]: Start minimizeSevpa. Operand 418 states. [2018-06-22 11:20:28,390 INFO ]: Finished minimizeSevpa. Reduced states from 418 to 290. [2018-06-22 11:20:28,390 INFO ]: Start removeUnreachable. Operand 290 states. [2018-06-22 11:20:28,398 INFO ]: Finished removeUnreachable. Reduced from 290 states to 290 states and 1825 transitions. [2018-06-22 11:20:28,398 INFO ]: Start accepts. Automaton has 290 states and 1825 transitions. Word has length 77 [2018-06-22 11:20:28,398 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:28,398 INFO ]: Abstraction has 290 states and 1825 transitions. [2018-06-22 11:20:28,398 INFO ]: Interpolant automaton has 25 states. [2018-06-22 11:20:28,398 INFO ]: Start isEmpty. Operand 290 states and 1825 transitions. [2018-06-22 11:20:28,406 INFO ]: Finished isEmpty. Found accepting run of length 118 [2018-06-22 11:20:28,406 INFO ]: Found error trace [2018-06-22 11:20:28,406 INFO ]: trace histogram [28, 15, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:28,406 INFO ]: === Iteration 21 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:28,406 INFO ]: Analyzing trace with hash 735780947, now seen corresponding path program 2 times [2018-06-22 11:20:28,406 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:28,406 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:28,407 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:28,407 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:28,407 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:28,428 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:28,604 INFO ]: Checked inductivity of 1290 backedges. 30 proven. 581 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-06-22 11:20:28,604 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:28,604 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:28,626 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:20:28,679 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:20:28,679 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:28,688 INFO ]: Computing forward predicates... [2018-06-22 11:20:29,191 INFO ]: Checked inductivity of 1290 backedges. 669 proven. 114 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2018-06-22 11:20:29,210 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:29,210 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2018-06-22 11:20:29,210 INFO ]: Interpolant automaton has 26 states [2018-06-22 11:20:29,210 INFO ]: Constructing interpolant automaton starting with 26 interpolants. [2018-06-22 11:20:29,211 INFO ]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2018-06-22 11:20:29,211 INFO ]: Start difference. First operand 290 states and 1825 transitions. Second operand 26 states. [2018-06-22 11:20:31,786 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:31,786 INFO ]: Finished difference Result 410 states and 2418 transitions. [2018-06-22 11:20:31,786 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-06-22 11:20:31,786 INFO ]: Start accepts. Automaton has 26 states. Word has length 117 [2018-06-22 11:20:31,786 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:31,794 INFO ]: With dead ends: 410 [2018-06-22 11:20:31,794 INFO ]: Without dead ends: 410 [2018-06-22 11:20:31,796 INFO ]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1240, Invalid=5900, Unknown=0, NotChecked=0, Total=7140 [2018-06-22 11:20:31,796 INFO ]: Start minimizeSevpa. Operand 410 states. [2018-06-22 11:20:31,897 INFO ]: Finished minimizeSevpa. Reduced states from 410 to 316. [2018-06-22 11:20:31,897 INFO ]: Start removeUnreachable. Operand 316 states. [2018-06-22 11:20:31,901 INFO ]: Finished removeUnreachable. Reduced from 316 states to 316 states and 2066 transitions. [2018-06-22 11:20:31,901 INFO ]: Start accepts. Automaton has 316 states and 2066 transitions. Word has length 117 [2018-06-22 11:20:31,902 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:31,902 INFO ]: Abstraction has 316 states and 2066 transitions. [2018-06-22 11:20:31,902 INFO ]: Interpolant automaton has 26 states. [2018-06-22 11:20:31,902 INFO ]: Start isEmpty. Operand 316 states and 2066 transitions. [2018-06-22 11:20:31,907 INFO ]: Finished isEmpty. Found accepting run of length 110 [2018-06-22 11:20:31,907 INFO ]: Found error trace [2018-06-22 11:20:31,907 INFO ]: trace histogram [18, 8, 8, 8, 8, 8, 8, 7, 7, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:31,907 INFO ]: === Iteration 22 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:31,907 INFO ]: Analyzing trace with hash 144056885, now seen corresponding path program 1 times [2018-06-22 11:20:31,907 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:31,907 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:31,909 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:31,909 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:31,909 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:31,924 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:32,485 INFO ]: Checked inductivity of 605 backedges. 21 proven. 127 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2018-06-22 11:20:32,485 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:32,485 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:32,498 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:32,555 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:32,559 INFO ]: Computing forward predicates... [2018-06-22 11:20:32,864 INFO ]: Checked inductivity of 605 backedges. 312 proven. 22 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-06-22 11:20:32,895 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:32,895 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-06-22 11:20:32,896 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:20:32,896 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:20:32,896 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:20:32,896 INFO ]: Start difference. First operand 316 states and 2066 transitions. Second operand 8 states. [2018-06-22 11:20:33,662 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:33,662 INFO ]: Finished difference Result 338 states and 1560 transitions. [2018-06-22 11:20:33,663 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:20:33,663 INFO ]: Start accepts. Automaton has 8 states. Word has length 109 [2018-06-22 11:20:33,663 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:33,667 INFO ]: With dead ends: 338 [2018-06-22 11:20:33,667 INFO ]: Without dead ends: 284 [2018-06-22 11:20:33,668 INFO ]: 0 DeclaredPredicates, 122 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:20:33,668 INFO ]: Start minimizeSevpa. Operand 284 states. [2018-06-22 11:20:33,757 INFO ]: Finished minimizeSevpa. Reduced states from 284 to 262. [2018-06-22 11:20:33,757 INFO ]: Start removeUnreachable. Operand 262 states. [2018-06-22 11:20:33,760 INFO ]: Finished removeUnreachable. Reduced from 262 states to 262 states and 1092 transitions. [2018-06-22 11:20:33,760 INFO ]: Start accepts. Automaton has 262 states and 1092 transitions. Word has length 109 [2018-06-22 11:20:33,760 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:33,760 INFO ]: Abstraction has 262 states and 1092 transitions. [2018-06-22 11:20:33,760 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:20:33,760 INFO ]: Start isEmpty. Operand 262 states and 1092 transitions. [2018-06-22 11:20:33,763 INFO ]: Finished isEmpty. Found accepting run of length 126 [2018-06-22 11:20:33,763 INFO ]: Found error trace [2018-06-22 11:20:33,763 INFO ]: trace histogram [22, 10, 10, 10, 10, 10, 9, 6, 5, 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] [2018-06-22 11:20:33,763 INFO ]: === Iteration 23 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:33,763 INFO ]: Analyzing trace with hash -1800509385, now seen corresponding path program 1 times [2018-06-22 11:20:33,763 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:33,763 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:33,764 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:33,764 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:33,764 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:33,781 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:34,135 INFO ]: Checked inductivity of 833 backedges. 31 proven. 386 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-06-22 11:20:34,136 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:34,136 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:34,141 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:34,182 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:34,185 INFO ]: Computing forward predicates... [2018-06-22 11:20:34,456 INFO ]: Checked inductivity of 833 backedges. 453 proven. 67 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-06-22 11:20:34,475 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:34,475 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2018-06-22 11:20:34,475 INFO ]: Interpolant automaton has 24 states [2018-06-22 11:20:34,476 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 11:20:34,476 INFO ]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2018-06-22 11:20:34,476 INFO ]: Start difference. First operand 262 states and 1092 transitions. Second operand 24 states. [2018-06-22 11:20:35,926 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:35,926 INFO ]: Finished difference Result 374 states and 1456 transitions. [2018-06-22 11:20:35,986 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-06-22 11:20:35,986 INFO ]: Start accepts. Automaton has 24 states. Word has length 125 [2018-06-22 11:20:35,986 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:35,991 INFO ]: With dead ends: 374 [2018-06-22 11:20:35,991 INFO ]: Without dead ends: 374 [2018-06-22 11:20:35,991 INFO ]: 0 DeclaredPredicates, 176 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=389, Invalid=2161, Unknown=0, NotChecked=0, Total=2550 [2018-06-22 11:20:35,991 INFO ]: Start minimizeSevpa. Operand 374 states. [2018-06-22 11:20:36,109 INFO ]: Finished minimizeSevpa. Reduced states from 374 to 276. [2018-06-22 11:20:36,109 INFO ]: Start removeUnreachable. Operand 276 states. [2018-06-22 11:20:36,114 INFO ]: Finished removeUnreachable. Reduced from 276 states to 276 states and 1132 transitions. [2018-06-22 11:20:36,114 INFO ]: Start accepts. Automaton has 276 states and 1132 transitions. Word has length 125 [2018-06-22 11:20:36,114 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:36,114 INFO ]: Abstraction has 276 states and 1132 transitions. [2018-06-22 11:20:36,114 INFO ]: Interpolant automaton has 24 states. [2018-06-22 11:20:36,114 INFO ]: Start isEmpty. Operand 276 states and 1132 transitions. [2018-06-22 11:20:36,123 INFO ]: Finished isEmpty. Found accepting run of length 126 [2018-06-22 11:20:36,123 INFO ]: Found error trace [2018-06-22 11:20:36,123 INFO ]: trace histogram [18, 12, 9, 8, 8, 8, 8, 8, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:36,123 INFO ]: === Iteration 24 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:36,123 INFO ]: Analyzing trace with hash 1011529541, now seen corresponding path program 2 times [2018-06-22 11:20:36,123 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:36,123 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:36,124 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:36,124 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:36,124 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:36,139 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:36,260 INFO ]: Checked inductivity of 725 backedges. 70 proven. 154 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2018-06-22 11:20:36,260 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:36,260 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:36,265 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:20:36,309 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:20:36,309 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:36,312 INFO ]: Computing forward predicates... [2018-06-22 11:20:36,426 INFO ]: Checked inductivity of 725 backedges. 365 proven. 36 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-06-22 11:20:36,445 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:36,445 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2018-06-22 11:20:36,445 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:20:36,445 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:20:36,445 INFO ]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:20:36,446 INFO ]: Start difference. First operand 276 states and 1132 transitions. Second operand 17 states. [2018-06-22 11:20:36,857 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:36,857 INFO ]: Finished difference Result 276 states and 1080 transitions. [2018-06-22 11:20:36,857 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 11:20:36,857 INFO ]: Start accepts. Automaton has 17 states. Word has length 125 [2018-06-22 11:20:36,857 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:36,860 INFO ]: With dead ends: 276 [2018-06-22 11:20:36,860 INFO ]: Without dead ends: 276 [2018-06-22 11:20:36,860 INFO ]: 0 DeclaredPredicates, 148 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:20:36,860 INFO ]: Start minimizeSevpa. Operand 276 states. [2018-06-22 11:20:36,891 INFO ]: Finished minimizeSevpa. Reduced states from 276 to 237. [2018-06-22 11:20:36,891 INFO ]: Start removeUnreachable. Operand 237 states. [2018-06-22 11:20:36,895 INFO ]: Finished removeUnreachable. Reduced from 237 states to 237 states and 835 transitions. [2018-06-22 11:20:36,895 INFO ]: Start accepts. Automaton has 237 states and 835 transitions. Word has length 125 [2018-06-22 11:20:36,895 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:36,895 INFO ]: Abstraction has 237 states and 835 transitions. [2018-06-22 11:20:36,895 INFO ]: Interpolant automaton has 17 states. [2018-06-22 11:20:36,895 INFO ]: Start isEmpty. Operand 237 states and 835 transitions. [2018-06-22 11:20:36,900 INFO ]: Finished isEmpty. Found accepting run of length 126 [2018-06-22 11:20:36,900 INFO ]: Found error trace [2018-06-22 11:20:36,900 INFO ]: trace histogram [26, 13, 12, 12, 12, 12, 12, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:36,900 INFO ]: === Iteration 25 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:36,900 INFO ]: Analyzing trace with hash 1649579689, now seen corresponding path program 3 times [2018-06-22 11:20:36,900 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:36,900 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:36,901 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:36,901 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:36,901 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:36,917 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:37,061 INFO ]: Checked inductivity of 1125 backedges. 35 proven. 550 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2018-06-22 11:20:37,061 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:37,061 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:37,067 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:20:37,106 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-06-22 11:20:37,106 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:37,110 INFO ]: Computing forward predicates... [2018-06-22 11:20:37,380 INFO ]: Checked inductivity of 1125 backedges. 296 proven. 26 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2018-06-22 11:20:37,399 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:37,399 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 25 [2018-06-22 11:20:37,399 INFO ]: Interpolant automaton has 25 states [2018-06-22 11:20:37,399 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 11:20:37,399 INFO ]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2018-06-22 11:20:37,400 INFO ]: Start difference. First operand 237 states and 835 transitions. Second operand 25 states. [2018-06-22 11:20:38,140 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:38,141 INFO ]: Finished difference Result 298 states and 1070 transitions. [2018-06-22 11:20:38,141 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-06-22 11:20:38,141 INFO ]: Start accepts. Automaton has 25 states. Word has length 125 [2018-06-22 11:20:38,141 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:38,144 INFO ]: With dead ends: 298 [2018-06-22 11:20:38,144 INFO ]: Without dead ends: 298 [2018-06-22 11:20:38,145 INFO ]: 0 DeclaredPredicates, 177 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=392, Invalid=1864, Unknown=0, NotChecked=0, Total=2256 [2018-06-22 11:20:38,145 INFO ]: Start minimizeSevpa. Operand 298 states. [2018-06-22 11:20:38,177 INFO ]: Finished minimizeSevpa. Reduced states from 298 to 266. [2018-06-22 11:20:38,177 INFO ]: Start removeUnreachable. Operand 266 states. [2018-06-22 11:20:38,180 INFO ]: Finished removeUnreachable. Reduced from 266 states to 266 states and 998 transitions. [2018-06-22 11:20:38,180 INFO ]: Start accepts. Automaton has 266 states and 998 transitions. Word has length 125 [2018-06-22 11:20:38,180 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:38,180 INFO ]: Abstraction has 266 states and 998 transitions. [2018-06-22 11:20:38,180 INFO ]: Interpolant automaton has 25 states. [2018-06-22 11:20:38,180 INFO ]: Start isEmpty. Operand 266 states and 998 transitions. [2018-06-22 11:20:38,186 INFO ]: Finished isEmpty. Found accepting run of length 86 [2018-06-22 11:20:38,186 INFO ]: Found error trace [2018-06-22 11:20:38,186 INFO ]: trace histogram [10, 6, 5, 4, 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, 1, 1] [2018-06-22 11:20:38,186 INFO ]: === Iteration 26 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:38,187 INFO ]: Analyzing trace with hash 1105899725, now seen corresponding path program 2 times [2018-06-22 11:20:38,187 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:38,187 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:38,187 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:38,187 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:38,187 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:38,198 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:38,348 INFO ]: Checked inductivity of 212 backedges. 51 proven. 41 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-06-22 11:20:38,348 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:38,348 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:38,354 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:20:38,413 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:20:38,413 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:38,417 INFO ]: Computing forward predicates... [2018-06-22 11:20:38,556 INFO ]: Checked inductivity of 212 backedges. 33 proven. 68 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-06-22 11:20:38,575 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:38,575 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2018-06-22 11:20:38,575 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:20:38,575 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:20:38,576 INFO ]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:20:38,576 INFO ]: Start difference. First operand 266 states and 998 transitions. Second operand 16 states. [2018-06-22 11:20:39,227 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:39,227 INFO ]: Finished difference Result 403 states and 1310 transitions. [2018-06-22 11:20:39,228 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-22 11:20:39,228 INFO ]: Start accepts. Automaton has 16 states. Word has length 85 [2018-06-22 11:20:39,228 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:39,232 INFO ]: With dead ends: 403 [2018-06-22 11:20:39,232 INFO ]: Without dead ends: 403 [2018-06-22 11:20:39,232 INFO ]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 11:20:39,233 INFO ]: Start minimizeSevpa. Operand 403 states. [2018-06-22 11:20:39,276 INFO ]: Finished minimizeSevpa. Reduced states from 403 to 270. [2018-06-22 11:20:39,276 INFO ]: Start removeUnreachable. Operand 270 states. [2018-06-22 11:20:39,279 INFO ]: Finished removeUnreachable. Reduced from 270 states to 270 states and 992 transitions. [2018-06-22 11:20:39,279 INFO ]: Start accepts. Automaton has 270 states and 992 transitions. Word has length 85 [2018-06-22 11:20:39,279 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:39,279 INFO ]: Abstraction has 270 states and 992 transitions. [2018-06-22 11:20:39,279 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:20:39,280 INFO ]: Start isEmpty. Operand 270 states and 992 transitions. [2018-06-22 11:20:39,283 INFO ]: Finished isEmpty. Found accepting run of length 134 [2018-06-22 11:20:39,283 INFO ]: Found error trace [2018-06-22 11:20:39,283 INFO ]: trace histogram [28, 14, 13, 13, 13, 13, 13, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:39,283 INFO ]: === Iteration 27 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:39,284 INFO ]: Analyzing trace with hash -1124644175, now seen corresponding path program 4 times [2018-06-22 11:20:39,284 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:39,284 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:39,284 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:39,284 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:39,284 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:39,299 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:39,397 INFO ]: Checked inductivity of 1308 backedges. 330 proven. 4 refuted. 0 times theorem prover too weak. 974 trivial. 0 not checked. [2018-06-22 11:20:39,397 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:39,397 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:39,403 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:20:39,453 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:20:39,453 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:39,457 INFO ]: Computing forward predicates... [2018-06-22 11:20:39,596 INFO ]: Checked inductivity of 1308 backedges. 494 proven. 64 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2018-06-22 11:20:39,615 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:39,615 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14] total 15 [2018-06-22 11:20:39,615 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:20:39,616 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:20:39,616 INFO ]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:20:39,616 INFO ]: Start difference. First operand 270 states and 992 transitions. Second operand 15 states. [2018-06-22 11:20:39,943 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:39,943 INFO ]: Finished difference Result 425 states and 1677 transitions. [2018-06-22 11:20:39,944 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 11:20:39,944 INFO ]: Start accepts. Automaton has 15 states. Word has length 133 [2018-06-22 11:20:39,944 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:39,949 INFO ]: With dead ends: 425 [2018-06-22 11:20:39,950 INFO ]: Without dead ends: 425 [2018-06-22 11:20:39,950 INFO ]: 0 DeclaredPredicates, 150 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2018-06-22 11:20:39,950 INFO ]: Start minimizeSevpa. Operand 425 states. [2018-06-22 11:20:39,984 INFO ]: Finished minimizeSevpa. Reduced states from 425 to 258. [2018-06-22 11:20:39,984 INFO ]: Start removeUnreachable. Operand 258 states. [2018-06-22 11:20:39,986 INFO ]: Finished removeUnreachable. Reduced from 258 states to 258 states and 882 transitions. [2018-06-22 11:20:39,986 INFO ]: Start accepts. Automaton has 258 states and 882 transitions. Word has length 133 [2018-06-22 11:20:39,986 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:39,987 INFO ]: Abstraction has 258 states and 882 transitions. [2018-06-22 11:20:39,987 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:20:39,987 INFO ]: Start isEmpty. Operand 258 states and 882 transitions. [2018-06-22 11:20:39,990 INFO ]: Finished isEmpty. Found accepting run of length 110 [2018-06-22 11:20:39,990 INFO ]: Found error trace [2018-06-22 11:20:39,990 INFO ]: trace histogram [14, 10, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:39,990 INFO ]: === Iteration 28 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:39,990 INFO ]: Analyzing trace with hash 1218648755, now seen corresponding path program 3 times [2018-06-22 11:20:39,990 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:39,990 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:39,991 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:39,991 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:39,991 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:40,000 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:40,131 INFO ]: Checked inductivity of 399 backedges. 46 proven. 64 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-06-22 11:20:40,131 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:40,131 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:40,139 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:20:40,164 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 11:20:40,164 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:40,166 INFO ]: Computing forward predicates... [2018-06-22 11:20:40,228 INFO ]: Checked inductivity of 399 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-06-22 11:20:40,247 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:40,247 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-06-22 11:20:40,247 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:20:40,247 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:20:40,248 INFO ]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:20:40,248 INFO ]: Start difference. First operand 258 states and 882 transitions. Second operand 16 states. [2018-06-22 11:20:40,721 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:40,721 INFO ]: Finished difference Result 282 states and 965 transitions. [2018-06-22 11:20:40,721 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-22 11:20:40,721 INFO ]: Start accepts. Automaton has 16 states. Word has length 109 [2018-06-22 11:20:40,721 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:40,724 INFO ]: With dead ends: 282 [2018-06-22 11:20:40,724 INFO ]: Without dead ends: 282 [2018-06-22 11:20:40,724 INFO ]: 0 DeclaredPredicates, 131 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:20:40,725 INFO ]: Start minimizeSevpa. Operand 282 states. [2018-06-22 11:20:40,746 INFO ]: Finished minimizeSevpa. Reduced states from 282 to 223. [2018-06-22 11:20:40,746 INFO ]: Start removeUnreachable. Operand 223 states. [2018-06-22 11:20:40,749 INFO ]: Finished removeUnreachable. Reduced from 223 states to 223 states and 803 transitions. [2018-06-22 11:20:40,749 INFO ]: Start accepts. Automaton has 223 states and 803 transitions. Word has length 109 [2018-06-22 11:20:40,749 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:40,749 INFO ]: Abstraction has 223 states and 803 transitions. [2018-06-22 11:20:40,749 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:20:40,749 INFO ]: Start isEmpty. Operand 223 states and 803 transitions. [2018-06-22 11:20:40,754 INFO ]: Finished isEmpty. Found accepting run of length 78 [2018-06-22 11:20:40,754 INFO ]: Found error trace [2018-06-22 11:20:40,754 INFO ]: trace histogram [10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:40,754 INFO ]: === Iteration 29 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:40,754 INFO ]: Analyzing trace with hash -1576447689, now seen corresponding path program 4 times [2018-06-22 11:20:40,754 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:40,754 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:40,755 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:40,755 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:40,755 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:40,769 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:40,828 INFO ]: Checked inductivity of 183 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-06-22 11:20:40,828 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:40,828 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:40,835 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:20:40,862 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:20:40,862 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:40,864 INFO ]: Computing forward predicates... [2018-06-22 11:20:40,925 INFO ]: Checked inductivity of 183 backedges. 54 proven. 14 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-06-22 11:20:40,944 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:40,944 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2018-06-22 11:20:40,964 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:20:40,964 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:20:40,964 INFO ]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:20:40,964 INFO ]: Start difference. First operand 223 states and 803 transitions. Second operand 15 states. [2018-06-22 11:20:41,393 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:41,393 INFO ]: Finished difference Result 299 states and 1093 transitions. [2018-06-22 11:20:41,393 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 11:20:41,393 INFO ]: Start accepts. Automaton has 15 states. Word has length 77 [2018-06-22 11:20:41,393 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:41,397 INFO ]: With dead ends: 299 [2018-06-22 11:20:41,397 INFO ]: Without dead ends: 298 [2018-06-22 11:20:41,397 INFO ]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2018-06-22 11:20:41,397 INFO ]: Start minimizeSevpa. Operand 298 states. [2018-06-22 11:20:41,420 INFO ]: Finished minimizeSevpa. Reduced states from 298 to 226. [2018-06-22 11:20:41,420 INFO ]: Start removeUnreachable. Operand 226 states. [2018-06-22 11:20:41,422 INFO ]: Finished removeUnreachable. Reduced from 226 states to 226 states and 815 transitions. [2018-06-22 11:20:41,422 INFO ]: Start accepts. Automaton has 226 states and 815 transitions. Word has length 77 [2018-06-22 11:20:41,422 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:41,422 INFO ]: Abstraction has 226 states and 815 transitions. [2018-06-22 11:20:41,422 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:20:41,422 INFO ]: Start isEmpty. Operand 226 states and 815 transitions. [2018-06-22 11:20:41,427 INFO ]: Finished isEmpty. Found accepting run of length 190 [2018-06-22 11:20:41,427 INFO ]: Found error trace [2018-06-22 11:20:41,427 INFO ]: trace histogram [28, 18, 17, 13, 13, 13, 13, 13, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:41,427 INFO ]: === Iteration 30 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:41,427 INFO ]: Analyzing trace with hash -688557479, now seen corresponding path program 1 times [2018-06-22 11:20:41,427 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:41,427 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:41,428 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:41,428 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:41,428 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:41,445 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:41,647 INFO ]: Checked inductivity of 1805 backedges. 183 proven. 267 refuted. 0 times theorem prover too weak. 1355 trivial. 0 not checked. [2018-06-22 11:20:41,648 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:41,648 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:41,654 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:41,713 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:41,721 INFO ]: Computing forward predicates... [2018-06-22 11:20:42,987 INFO ]: Checked inductivity of 1805 backedges. 788 proven. 155 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2018-06-22 11:20:43,007 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:43,007 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15] total 21 [2018-06-22 11:20:43,007 INFO ]: Interpolant automaton has 21 states [2018-06-22 11:20:43,007 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 11:20:43,007 INFO ]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:20:43,007 INFO ]: Start difference. First operand 226 states and 815 transitions. Second operand 21 states. [2018-06-22 11:20:44,291 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:44,292 INFO ]: Finished difference Result 270 states and 860 transitions. [2018-06-22 11:20:44,292 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-06-22 11:20:44,292 INFO ]: Start accepts. Automaton has 21 states. Word has length 189 [2018-06-22 11:20:44,292 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:44,294 INFO ]: With dead ends: 270 [2018-06-22 11:20:44,294 INFO ]: Without dead ends: 270 [2018-06-22 11:20:44,296 INFO ]: 0 DeclaredPredicates, 245 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=910, Invalid=3122, Unknown=0, NotChecked=0, Total=4032 [2018-06-22 11:20:44,296 INFO ]: Start minimizeSevpa. Operand 270 states. [2018-06-22 11:20:44,311 INFO ]: Finished minimizeSevpa. Reduced states from 270 to 233. [2018-06-22 11:20:44,312 INFO ]: Start removeUnreachable. Operand 233 states. [2018-06-22 11:20:44,313 INFO ]: Finished removeUnreachable. Reduced from 233 states to 233 states and 804 transitions. [2018-06-22 11:20:44,314 INFO ]: Start accepts. Automaton has 233 states and 804 transitions. Word has length 189 [2018-06-22 11:20:44,314 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:44,314 INFO ]: Abstraction has 233 states and 804 transitions. [2018-06-22 11:20:44,314 INFO ]: Interpolant automaton has 21 states. [2018-06-22 11:20:44,314 INFO ]: Start isEmpty. Operand 233 states and 804 transitions. [2018-06-22 11:20:44,318 INFO ]: Finished isEmpty. Found accepting run of length 126 [2018-06-22 11:20:44,318 INFO ]: Found error trace [2018-06-22 11:20:44,318 INFO ]: trace histogram [30, 16, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:44,318 INFO ]: === Iteration 31 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:44,319 INFO ]: Analyzing trace with hash -1200787365, now seen corresponding path program 3 times [2018-06-22 11:20:44,319 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:44,319 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:44,319 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:44,319 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:20:44,319 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:44,334 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:44,606 INFO ]: Checked inductivity of 1487 backedges. 40 proven. 734 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2018-06-22 11:20:44,606 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:44,606 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:44,612 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:20:44,672 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-06-22 11:20:44,672 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:44,676 INFO ]: Computing forward predicates... [2018-06-22 11:20:45,876 INFO ]: Checked inductivity of 1487 backedges. 380 proven. 24 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2018-06-22 11:20:45,904 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:45,904 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8] total 22 [2018-06-22 11:20:45,904 INFO ]: Interpolant automaton has 22 states [2018-06-22 11:20:45,904 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-22 11:20:45,904 INFO ]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2018-06-22 11:20:45,905 INFO ]: Start difference. First operand 233 states and 804 transitions. Second operand 22 states. [2018-06-22 11:20:46,993 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:46,993 INFO ]: Finished difference Result 307 states and 889 transitions. [2018-06-22 11:20:46,993 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-06-22 11:20:46,993 INFO ]: Start accepts. Automaton has 22 states. Word has length 125 [2018-06-22 11:20:46,994 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:46,996 INFO ]: With dead ends: 307 [2018-06-22 11:20:46,996 INFO ]: Without dead ends: 307 [2018-06-22 11:20:46,997 INFO ]: 0 DeclaredPredicates, 199 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=883, Invalid=2899, Unknown=0, NotChecked=0, Total=3782 [2018-06-22 11:20:46,997 INFO ]: Start minimizeSevpa. Operand 307 states. [2018-06-22 11:20:47,012 INFO ]: Finished minimizeSevpa. Reduced states from 307 to 236. [2018-06-22 11:20:47,012 INFO ]: Start removeUnreachable. Operand 236 states. [2018-06-22 11:20:47,015 INFO ]: Finished removeUnreachable. Reduced from 236 states to 236 states and 780 transitions. [2018-06-22 11:20:47,015 INFO ]: Start accepts. Automaton has 236 states and 780 transitions. Word has length 125 [2018-06-22 11:20:47,016 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:47,016 INFO ]: Abstraction has 236 states and 780 transitions. [2018-06-22 11:20:47,016 INFO ]: Interpolant automaton has 22 states. [2018-06-22 11:20:47,016 INFO ]: Start isEmpty. Operand 236 states and 780 transitions. [2018-06-22 11:20:47,021 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 11:20:47,021 INFO ]: Found error trace [2018-06-22 11:20:47,021 INFO ]: trace histogram [6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:47,021 INFO ]: === Iteration 32 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:47,022 INFO ]: Analyzing trace with hash -2130040643, now seen corresponding path program 5 times [2018-06-22 11:20:47,022 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:47,022 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:47,022 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:47,022 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:47,022 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:47,028 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:47,706 INFO ]: Checked inductivity of 112 backedges. 23 proven. 14 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-06-22 11:20:47,706 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:20:47,706 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:20:47,711 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:20:47,730 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-06-22 11:20:47,730 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:20:47,732 INFO ]: Computing forward predicates... [2018-06-22 11:20:47,829 INFO ]: Checked inductivity of 112 backedges. 46 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-06-22 11:20:47,848 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:20:47,848 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2018-06-22 11:20:47,848 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:20:47,848 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:20:47,848 INFO ]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:20:47,848 INFO ]: Start difference. First operand 236 states and 780 transitions. Second operand 15 states. [2018-06-22 11:20:48,419 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:20:48,420 INFO ]: Finished difference Result 362 states and 1194 transitions. [2018-06-22 11:20:48,420 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-06-22 11:20:48,420 INFO ]: Start accepts. Automaton has 15 states. Word has length 69 [2018-06-22 11:20:48,420 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:20:48,423 INFO ]: With dead ends: 362 [2018-06-22 11:20:48,423 INFO ]: Without dead ends: 362 [2018-06-22 11:20:48,424 INFO ]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2018-06-22 11:20:48,424 INFO ]: Start minimizeSevpa. Operand 362 states. [2018-06-22 11:20:48,449 INFO ]: Finished minimizeSevpa. Reduced states from 362 to 241. [2018-06-22 11:20:48,449 INFO ]: Start removeUnreachable. Operand 241 states. [2018-06-22 11:20:48,451 INFO ]: Finished removeUnreachable. Reduced from 241 states to 241 states and 864 transitions. [2018-06-22 11:20:48,452 INFO ]: Start accepts. Automaton has 241 states and 864 transitions. Word has length 69 [2018-06-22 11:20:48,452 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:20:48,452 INFO ]: Abstraction has 241 states and 864 transitions. [2018-06-22 11:20:48,452 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:20:48,452 INFO ]: Start isEmpty. Operand 241 states and 864 transitions. [2018-06-22 11:20:48,457 INFO ]: Finished isEmpty. Found accepting run of length 166 [2018-06-22 11:20:48,457 INFO ]: Found error trace [2018-06-22 11:20:48,457 INFO ]: trace histogram [34, 16, 16, 16, 16, 16, 15, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:20:48,457 INFO ]: === Iteration 33 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:20:48,457 INFO ]: Analyzing trace with hash -877321313, now seen corresponding path program 1 times [2018-06-22 11:20:48,457 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:20:48,457 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:20:48,458 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:48,458 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:20:48,458 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:20:48,476 INFO ]: Conjunction of SSA is unsat Received shutdown request... [2018-06-22 11:20:49,025 WARN ]: Verification canceled [2018-06-22 11:20:49,031 WARN ]: Timeout [2018-06-22 11:20:49,031 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:20:49 BoogieIcfgContainer [2018-06-22 11:20:49,031 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:20:49,032 INFO ]: Toolchain (without parser) took 54921.21 ms. Allocated memory was 308.8 MB in the beginning and 870.8 MB in the end (delta: 562.0 MB). Free memory was 263.2 MB in the beginning and 839.0 MB in the end (delta: -575.8 MB). Peak memory consumption was 273.5 MB. Max. memory is 3.6 GB. [2018-06-22 11:20:49,032 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:20:49,032 INFO ]: ChcToBoogie took 48.59 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 261.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:20:49,033 INFO ]: Boogie Preprocessor took 47.80 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 259.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:20:49,033 INFO ]: RCFGBuilder took 404.82 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 249.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:20:49,034 INFO ]: TraceAbstraction took 54408.74 ms. Allocated memory was 308.8 MB in the beginning and 870.8 MB in the end (delta: 562.0 MB). Free memory was 249.2 MB in the beginning and 839.0 MB in the end (delta: -589.8 MB). Peak memory consumption was 259.5 MB. Max. memory is 3.6 GB. [2018-06-22 11:20:49,035 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 48.59 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 261.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.80 ms. Allocated memory is still 308.8 MB. Free memory was 261.2 MB in the beginning and 259.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 404.82 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 249.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 54408.74 ms. Allocated memory was 308.8 MB in the beginning and 870.8 MB in the end (delta: 562.0 MB). Free memory was 249.2 MB in the beginning and 839.0 MB in the end (delta: -589.8 MB). Peak memory consumption was 259.5 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 166 with TraceHistMax 34, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. TIMEOUT Result, 54.3s OverallTime, 33 OverallIterations, 34 TraceHistogramMax, 30.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1352 SDtfs, 855 SDslu, 11702 SDs, 0 SdLazy, 20877 SolverSat, 4997 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3348 GetRequests, 2311 SyntacticMatches, 22 SemanticMatches, 1015 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9674 ImplicationChecksByTransitivity, 27.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 32 MinimizatonAttempts, 2151 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 4651 NumberOfCodeBlocks, 4454 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 4588 ConstructedInterpolants, 0 QuantifiedInterpolants, 881488 SizeOfPredicates, 262 NumberOfNonLiveVariables, 8424 ConjunctsInSsa, 763 ConjunctsInUnsatCore, 63 InterpolantComputations, 3 PerfectInterpolantSequences, 20664/25778 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/021b-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-20-49-047.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/021b-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-20-49-047.csv Completed graceful shutdown