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/024b-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:21:21,653 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:21:21,655 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:21:21,670 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:21:21,670 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:21:21,673 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:21:21,674 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:21:21,680 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:21:21,681 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:21:21,682 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:21:21,684 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:21:21,685 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:21:21,686 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:21:21,687 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:21:21,687 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:21:21,690 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:21:21,692 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:21:21,702 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:21:21,704 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:21:21,705 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:21:21,706 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:21:21,708 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:21:21,711 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:21:21,712 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:21:21,712 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:21:21,713 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:21:21,714 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:21:21,714 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:21:21,717 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:21:21,717 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:21:21,717 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:21:21,718 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:21:21,718 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:21:21,719 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:21:21,719 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:21:21,723 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 11:21:21,742 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:21:21,742 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:21:21,742 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:21:21,743 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:21:21,744 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:21:21,744 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:21:21,745 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:21:21,745 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:21:21,745 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:21:21,745 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:21:21,745 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:21:21,746 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:21:21,746 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:21:21,746 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:21:21,746 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:21:21,746 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:21:21,746 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:21:21,747 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:21:21,749 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:21:21,751 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:21:21,751 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:21:21,800 INFO ]: Repository-Root is: /tmp [2018-06-22 11:21:21,815 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:21:21,819 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:21:21,820 INFO ]: Initializing SmtParser... [2018-06-22 11:21:21,820 INFO ]: SmtParser initialized [2018-06-22 11:21:21,821 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/024b-horn.smt2 [2018-06-22 11:21:21,822 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 11:21:21,892 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/024b-horn.smt2 unknown [2018-06-22 11:21:22,060 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/024b-horn.smt2 [2018-06-22 11:21:22,065 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:21:22,071 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:21:22,071 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:21:22,071 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:21:22,071 INFO ]: ChcToBoogie initialized [2018-06-22 11:21:22,074 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:21:22" (1/1) ... [2018-06-22 11:21:22,123 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:22 Unit [2018-06-22 11:21:22,123 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:21:22,124 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:21:22,124 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:21:22,124 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:21:22,147 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:22" (1/1) ... [2018-06-22 11:21:22,147 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:22" (1/1) ... [2018-06-22 11:21:22,155 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:22" (1/1) ... [2018-06-22 11:21:22,155 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:22" (1/1) ... [2018-06-22 11:21:22,158 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:22" (1/1) ... [2018-06-22 11:21:22,161 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:22" (1/1) ... [2018-06-22 11:21:22,162 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:22" (1/1) ... [2018-06-22 11:21:22,165 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:21:22,165 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:21:22,165 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:21:22,166 INFO ]: RCFGBuilder initialized [2018-06-22 11:21:22,166 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:22" (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 11:21:22,181 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:21:22,182 INFO ]: Found specification of procedure False [2018-06-22 11:21:22,182 INFO ]: Found implementation of procedure False [2018-06-22 11:21:22,182 INFO ]: Specification and implementation of procedure REC_g_g given in one single declaration [2018-06-22 11:21:22,182 INFO ]: Found specification of procedure REC_g_g [2018-06-22 11:21:22,182 INFO ]: Found implementation of procedure REC_g_g [2018-06-22 11:21:22,182 INFO ]: Specification and implementation of procedure REC__g given in one single declaration [2018-06-22 11:21:22,182 INFO ]: Found specification of procedure REC__g [2018-06-22 11:21:22,182 INFO ]: Found implementation of procedure REC__g [2018-06-22 11:21:22,182 INFO ]: Specification and implementation of procedure REC_g_ given in one single declaration [2018-06-22 11:21:22,182 INFO ]: Found specification of procedure REC_g_ [2018-06-22 11:21:22,182 INFO ]: Found implementation of procedure REC_g_ [2018-06-22 11:21:22,182 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:21:22,182 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:21:22,182 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 11:21:22,493 INFO ]: Using library mode [2018-06-22 11:21:22,494 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:21:22 BoogieIcfgContainer [2018-06-22 11:21:22,494 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:21:22,495 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:21:22,495 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:21:22,498 INFO ]: TraceAbstraction initialized [2018-06-22 11:21:22,498 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:21:22" (1/3) ... [2018-06-22 11:21:22,499 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13efe5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:21:22, skipping insertion in model container [2018-06-22 11:21:22,499 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:22" (2/3) ... [2018-06-22 11:21:22,499 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13efe5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:21:22, skipping insertion in model container [2018-06-22 11:21:22,499 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:21:22" (3/3) ... [2018-06-22 11:21:22,501 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:21:22,510 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:21:22,518 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:21:22,568 INFO ]: Using default assertion order modulation [2018-06-22 11:21:22,569 INFO ]: Interprodecural is true [2018-06-22 11:21:22,569 INFO ]: Hoare is false [2018-06-22 11:21:22,569 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:21:22,569 INFO ]: Backedges is TWOTRACK [2018-06-22 11:21:22,569 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:21:22,569 INFO ]: Difference is false [2018-06-22 11:21:22,569 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:21:22,569 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:21:22,588 INFO ]: Start isEmpty. Operand 23 states. [2018-06-22 11:21:22,606 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:21:22,606 INFO ]: Found error trace [2018-06-22 11:21:22,608 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:22,608 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:22,614 INFO ]: Analyzing trace with hash 1338365559, now seen corresponding path program 1 times [2018-06-22 11:21:22,616 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:22,617 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:22,655 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:22,655 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:22,655 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:22,694 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:22,975 WARN ]: Spent 141.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-06-22 11:21:22,979 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:21:22,983 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:21:22,983 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:21:22,985 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:21:22,999 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:21:23,000 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:23,002 INFO ]: Start difference. First operand 23 states. Second operand 4 states. [2018-06-22 11:21:23,102 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:23,102 INFO ]: Finished difference Result 23 states and 30 transitions. [2018-06-22 11:21:23,104 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:21:23,105 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:21:23,105 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:23,119 INFO ]: With dead ends: 23 [2018-06-22 11:21:23,119 INFO ]: Without dead ends: 23 [2018-06-22 11:21:23,122 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:23,137 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 11:21:23,159 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 11:21:23,160 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 11:21:23,161 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2018-06-22 11:21:23,162 INFO ]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 9 [2018-06-22 11:21:23,163 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:23,163 INFO ]: Abstraction has 23 states and 30 transitions. [2018-06-22 11:21:23,163 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:21:23,163 INFO ]: Start isEmpty. Operand 23 states and 30 transitions. [2018-06-22 11:21:23,165 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:21:23,165 INFO ]: Found error trace [2018-06-22 11:21:23,165 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:23,165 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:23,165 INFO ]: Analyzing trace with hash 1454926245, now seen corresponding path program 1 times [2018-06-22 11:21:23,165 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:23,165 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:23,166 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:23,166 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:23,166 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:23,172 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:23,228 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:21:23,228 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:21:23,229 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:21:23,230 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:21:23,230 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:21:23,230 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:23,230 INFO ]: Start difference. First operand 23 states and 30 transitions. Second operand 4 states. [2018-06-22 11:21:23,276 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:23,276 INFO ]: Finished difference Result 25 states and 32 transitions. [2018-06-22 11:21:23,276 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:21:23,276 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 11:21:23,276 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:23,277 INFO ]: With dead ends: 25 [2018-06-22 11:21:23,277 INFO ]: Without dead ends: 25 [2018-06-22 11:21:23,278 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:23,278 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 11:21:23,285 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-06-22 11:21:23,285 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 11:21:23,286 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2018-06-22 11:21:23,286 INFO ]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 13 [2018-06-22 11:21:23,287 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:23,287 INFO ]: Abstraction has 23 states and 30 transitions. [2018-06-22 11:21:23,287 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:21:23,287 INFO ]: Start isEmpty. Operand 23 states and 30 transitions. [2018-06-22 11:21:23,287 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:21:23,287 INFO ]: Found error trace [2018-06-22 11:21:23,288 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:23,288 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:23,288 INFO ]: Analyzing trace with hash 409670816, now seen corresponding path program 1 times [2018-06-22 11:21:23,288 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:23,288 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:23,289 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:23,289 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:23,289 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:23,300 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:23,489 WARN ]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 11:21:23,581 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:21:23,581 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:23,581 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:21:23,589 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:23,613 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:23,622 INFO ]: Computing forward predicates... [2018-06-22 11:21:23,882 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:21:23,913 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:23,913 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 11:21:23,913 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:21:23,914 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:21:23,914 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:21:23,914 INFO ]: Start difference. First operand 23 states and 30 transitions. Second operand 8 states. [2018-06-22 11:21:24,022 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:24,023 INFO ]: Finished difference Result 27 states and 34 transitions. [2018-06-22 11:21:24,023 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:21:24,023 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 11:21:24,023 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:24,024 INFO ]: With dead ends: 27 [2018-06-22 11:21:24,024 INFO ]: Without dead ends: 27 [2018-06-22 11:21:24,024 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:21:24,025 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 11:21:24,041 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 25. [2018-06-22 11:21:24,041 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 11:21:24,042 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2018-06-22 11:21:24,042 INFO ]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 13 [2018-06-22 11:21:24,042 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:24,042 INFO ]: Abstraction has 25 states and 32 transitions. [2018-06-22 11:21:24,042 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:21:24,042 INFO ]: Start isEmpty. Operand 25 states and 32 transitions. [2018-06-22 11:21:24,043 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:21:24,043 INFO ]: Found error trace [2018-06-22 11:21:24,043 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:24,043 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:24,049 INFO ]: Analyzing trace with hash 1963233870, now seen corresponding path program 1 times [2018-06-22 11:21:24,049 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:24,049 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:24,050 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:24,050 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:24,050 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:24,061 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:24,135 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:21:24,135 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:24,135 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 11:21:24,142 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:24,157 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:24,159 INFO ]: Computing forward predicates... [2018-06-22 11:21:24,613 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:21:24,633 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:24,634 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 11:21:24,634 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:21:24,634 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:21:24,634 INFO ]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:21:24,634 INFO ]: Start difference. First operand 25 states and 32 transitions. Second operand 10 states. [2018-06-22 11:21:24,816 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:24,816 INFO ]: Finished difference Result 33 states and 40 transitions. [2018-06-22 11:21:24,816 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:21:24,816 INFO ]: Start accepts. Automaton has 10 states. Word has length 17 [2018-06-22 11:21:24,817 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:24,817 INFO ]: With dead ends: 33 [2018-06-22 11:21:24,817 INFO ]: Without dead ends: 22 [2018-06-22 11:21:24,817 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:21:24,817 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-22 11:21:24,819 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-06-22 11:21:24,819 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-22 11:21:24,820 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2018-06-22 11:21:24,820 INFO ]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 17 [2018-06-22 11:21:24,820 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:24,820 INFO ]: Abstraction has 20 states and 24 transitions. [2018-06-22 11:21:24,820 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:21:24,820 INFO ]: Start isEmpty. Operand 20 states and 24 transitions. [2018-06-22 11:21:24,821 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:21:24,821 INFO ]: Found error trace [2018-06-22 11:21:24,821 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:24,821 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:24,821 INFO ]: Analyzing trace with hash -1799853431, now seen corresponding path program 2 times [2018-06-22 11:21:24,821 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:24,821 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:24,822 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:24,822 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:24,822 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:24,844 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:25,045 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:21:25,045 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:25,045 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 11:21:25,063 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:21:25,084 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:21:25,084 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:25,087 INFO ]: Computing forward predicates... [2018-06-22 11:21:25,464 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:21:25,484 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:25,484 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 11:21:25,484 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:21:25,484 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:21:25,485 INFO ]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:21:25,485 INFO ]: Start difference. First operand 20 states and 24 transitions. Second operand 12 states. [2018-06-22 11:21:25,733 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:25,733 INFO ]: Finished difference Result 26 states and 30 transitions. [2018-06-22 11:21:25,733 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:21:25,733 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 11:21:25,734 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:25,734 INFO ]: With dead ends: 26 [2018-06-22 11:21:25,734 INFO ]: Without dead ends: 26 [2018-06-22 11:21:25,735 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:21:25,735 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 11:21:25,739 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-06-22 11:21:25,739 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 11:21:25,739 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-06-22 11:21:25,740 INFO ]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2018-06-22 11:21:25,740 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:25,740 INFO ]: Abstraction has 24 states and 28 transitions. [2018-06-22 11:21:25,740 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:21:25,740 INFO ]: Start isEmpty. Operand 24 states and 28 transitions. [2018-06-22 11:21:25,740 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:21:25,740 INFO ]: Found error trace [2018-06-22 11:21:25,741 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:25,741 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:25,741 INFO ]: Analyzing trace with hash 148820546, now seen corresponding path program 1 times [2018-06-22 11:21:25,741 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:25,741 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:25,742 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:25,742 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:21:25,742 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:25,748 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:25,790 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:21:25,790 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:25,790 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 11:21:25,798 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:25,806 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:25,808 INFO ]: Computing forward predicates... [2018-06-22 11:21:25,851 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:21:25,870 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:25,870 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 11:21:25,870 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:21:25,870 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:21:25,870 INFO ]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:21:25,870 INFO ]: Start difference. First operand 24 states and 28 transitions. Second operand 10 states. [2018-06-22 11:21:25,942 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:25,942 INFO ]: Finished difference Result 30 states and 34 transitions. [2018-06-22 11:21:25,942 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:21:25,942 INFO ]: Start accepts. Automaton has 10 states. Word has length 17 [2018-06-22 11:21:25,942 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:25,943 INFO ]: With dead ends: 30 [2018-06-22 11:21:25,943 INFO ]: Without dead ends: 19 [2018-06-22 11:21:25,943 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:21:25,943 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:21:25,947 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 11:21:25,947 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:21:25,948 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 11:21:25,948 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2018-06-22 11:21:25,948 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:25,948 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 11:21:25,948 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:21:25,948 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 11:21:25,948 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:21:25,948 INFO ]: Found error trace [2018-06-22 11:21:25,948 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:25,949 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:25,949 INFO ]: Analyzing trace with hash 539991451, now seen corresponding path program 3 times [2018-06-22 11:21:25,949 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:25,949 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:25,949 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:25,949 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:25,949 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:25,973 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:26,327 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:21:26,327 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:26,327 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 11:21:26,333 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:21:26,353 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 11:21:26,353 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:26,362 INFO ]: Computing forward predicates... [2018-06-22 11:21:26,745 INFO ]: Checked inductivity of 36 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:21:26,777 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:26,777 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-06-22 11:21:26,777 INFO ]: Interpolant automaton has 20 states [2018-06-22 11:21:26,777 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 11:21:26,777 INFO ]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:21:26,778 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 11:21:27,381 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:27,381 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 11:21:27,382 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:21:27,382 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 11:21:27,382 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:27,382 INFO ]: With dead ends: 17 [2018-06-22 11:21:27,382 INFO ]: Without dead ends: 0 [2018-06-22 11:21:27,382 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2018-06-22 11:21:27,382 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:21:27,382 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:21:27,382 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:21:27,382 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:21:27,382 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 11:21:27,382 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:27,382 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:21:27,382 INFO ]: Interpolant automaton has 20 states. [2018-06-22 11:21:27,383 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:21:27,383 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:21:27,388 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:21:27 BoogieIcfgContainer [2018-06-22 11:21:27,388 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:21:27,388 INFO ]: Toolchain (without parser) took 5322.94 ms. Allocated memory was 309.9 MB in the beginning and 338.2 MB in the end (delta: 28.3 MB). Free memory was 266.3 MB in the beginning and 190.2 MB in the end (delta: 76.1 MB). Peak memory consumption was 104.4 MB. Max. memory is 3.6 GB. [2018-06-22 11:21:27,389 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:21:27,390 INFO ]: ChcToBoogie took 52.19 ms. Allocated memory is still 309.9 MB. Free memory is still 264.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:21:27,390 INFO ]: Boogie Preprocessor took 41.32 ms. Allocated memory is still 309.9 MB. Free memory was 264.3 MB in the beginning and 262.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:21:27,391 INFO ]: RCFGBuilder took 328.44 ms. Allocated memory is still 309.9 MB. Free memory was 262.3 MB in the beginning and 254.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:21:27,391 INFO ]: TraceAbstraction took 4892.56 ms. Allocated memory was 309.9 MB in the beginning and 338.2 MB in the end (delta: 28.3 MB). Free memory was 252.3 MB in the beginning and 190.2 MB in the end (delta: 62.1 MB). Peak memory consumption was 90.4 MB. Max. memory is 3.6 GB. [2018-06-22 11:21:27,394 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 52.19 ms. Allocated memory is still 309.9 MB. Free memory is still 264.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.32 ms. Allocated memory is still 309.9 MB. Free memory was 264.3 MB in the beginning and 262.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 328.44 ms. Allocated memory is still 309.9 MB. Free memory was 262.3 MB in the beginning and 254.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4892.56 ms. Allocated memory was 309.9 MB in the beginning and 338.2 MB in the end (delta: 28.3 MB). Free memory was 252.3 MB in the beginning and 190.2 MB in the end (delta: 62.1 MB). Peak memory consumption was 90.4 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. SAFE Result, 4.8s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 166 SDtfs, 38 SDslu, 497 SDs, 0 SdLazy, 259 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 26060 SizeOfPredicates, 47 NumberOfNonLiveVariables, 409 ConjunctsInSsa, 177 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 33/110 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/024b-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-21-27-404.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/024b-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-21-27-404.csv Received shutdown request...