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/hopv/lia/fpice/inductive2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:25:14,967 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:25:14,970 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:25:14,983 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:25:14,983 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:25:14,984 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:25:14,985 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:25:14,990 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:25:14,993 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:25:14,993 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:25:14,994 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:25:14,995 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:25:14,995 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:25:14,998 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:25:14,999 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:25:14,999 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:25:15,001 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:25:15,003 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:25:15,004 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:25:15,005 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:25:15,007 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:25:15,009 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:25:15,009 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:25:15,009 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:25:15,010 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:25:15,011 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:25:15,012 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:25:15,013 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:25:15,014 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:25:15,014 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:25:15,015 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:25:15,015 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:25:15,016 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:25:15,016 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:25:15,017 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:25:15,017 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 11:25:15,041 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:25:15,041 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:25:15,041 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:25:15,042 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:25:15,043 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:25:15,048 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:25:15,048 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:25:15,048 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:25:15,048 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:25:15,049 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:25:15,049 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:25:15,049 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:25:15,049 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:25:15,049 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:25:15,050 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:25:15,050 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:25:15,050 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:25:15,050 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:25:15,050 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:25:15,053 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:25:15,053 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:25:15,103 INFO ]: Repository-Root is: /tmp [2018-06-22 11:25:15,120 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:25:15,128 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:25:15,130 INFO ]: Initializing SmtParser... [2018-06-22 11:25:15,130 INFO ]: SmtParser initialized [2018-06-22 11:25:15,130 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/fpice/inductive2.smt2 [2018-06-22 11:25:15,132 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 11:25:15,231 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/fpice/inductive2.smt2 unknown [2018-06-22 11:25:15,410 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/fpice/inductive2.smt2 [2018-06-22 11:25:15,414 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:25:15,430 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:25:15,430 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:25:15,430 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:25:15,431 INFO ]: ChcToBoogie initialized [2018-06-22 11:25:15,434 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:25:15" (1/1) ... [2018-06-22 11:25:15,478 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:15 Unit [2018-06-22 11:25:15,478 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:25:15,478 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:25:15,479 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:25:15,479 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:25:15,498 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:15" (1/1) ... [2018-06-22 11:25:15,498 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:15" (1/1) ... [2018-06-22 11:25:15,511 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:15" (1/1) ... [2018-06-22 11:25:15,511 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:15" (1/1) ... [2018-06-22 11:25:15,515 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:15" (1/1) ... [2018-06-22 11:25:15,517 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:15" (1/1) ... [2018-06-22 11:25:15,517 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:15" (1/1) ... [2018-06-22 11:25:15,520 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:25:15,520 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:25:15,520 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:25:15,520 INFO ]: RCFGBuilder initialized [2018-06-22 11:25:15,521 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:15" (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 11:25:15,544 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:25:15,544 INFO ]: Found specification of procedure False [2018-06-22 11:25:15,544 INFO ]: Found implementation of procedure False [2018-06-22 11:25:15,544 INFO ]: Specification and implementation of procedure fDLRunknownCLN2 given in one single declaration [2018-06-22 11:25:15,544 INFO ]: Found specification of procedure fDLRunknownCLN2 [2018-06-22 11:25:15,544 INFO ]: Found implementation of procedure fDLRunknownCLN2 [2018-06-22 11:25:15,544 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:25:15,544 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:25:15,544 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 11:25:15,714 INFO ]: Using library mode [2018-06-22 11:25:15,715 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:25:15 BoogieIcfgContainer [2018-06-22 11:25:15,715 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:25:15,723 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:25:15,723 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:25:15,726 INFO ]: TraceAbstraction initialized [2018-06-22 11:25:15,727 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:25:15" (1/3) ... [2018-06-22 11:25:15,727 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b155b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:25:15, skipping insertion in model container [2018-06-22 11:25:15,727 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:15" (2/3) ... [2018-06-22 11:25:15,728 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b155b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:25:15, skipping insertion in model container [2018-06-22 11:25:15,728 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:25:15" (3/3) ... [2018-06-22 11:25:15,735 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:25:15,744 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:25:15,765 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:25:15,833 INFO ]: Using default assertion order modulation [2018-06-22 11:25:15,833 INFO ]: Interprodecural is true [2018-06-22 11:25:15,833 INFO ]: Hoare is false [2018-06-22 11:25:15,833 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:25:15,833 INFO ]: Backedges is TWOTRACK [2018-06-22 11:25:15,833 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:25:15,833 INFO ]: Difference is false [2018-06-22 11:25:15,833 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:25:15,834 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:25:15,850 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 11:25:15,859 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:25:15,860 INFO ]: Found error trace [2018-06-22 11:25:15,860 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:25:15,861 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:15,866 INFO ]: Analyzing trace with hash 60715160, now seen corresponding path program 1 times [2018-06-22 11:25:15,868 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:15,868 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:15,901 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:15,901 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:15,901 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:15,914 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:15,935 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:25:15,937 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:25:15,937 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:25:15,938 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:25:15,953 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:25:15,954 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:25:15,957 INFO ]: Start difference. First operand 13 states. Second operand 2 states. [2018-06-22 11:25:15,976 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:15,977 INFO ]: Finished difference Result 11 states and 14 transitions. [2018-06-22 11:25:15,977 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:25:15,978 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:25:15,978 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:15,995 INFO ]: With dead ends: 11 [2018-06-22 11:25:15,995 INFO ]: Without dead ends: 11 [2018-06-22 11:25:15,999 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 11:25:16,016 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 11:25:16,043 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 11:25:16,044 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 11:25:16,045 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-06-22 11:25:16,046 INFO ]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 5 [2018-06-22 11:25:16,046 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:16,046 INFO ]: Abstraction has 11 states and 14 transitions. [2018-06-22 11:25:16,046 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:25:16,046 INFO ]: Start isEmpty. Operand 11 states and 14 transitions. [2018-06-22 11:25:16,047 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:25:16,047 INFO ]: Found error trace [2018-06-22 11:25:16,047 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:25:16,047 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:16,047 INFO ]: Analyzing trace with hash -1351243173, now seen corresponding path program 1 times [2018-06-22 11:25:16,048 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:16,048 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:16,048 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:16,048 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:16,048 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:16,069 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:16,156 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:25:16,156 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:25:16,156 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:25:16,158 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:25:16,158 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:25:16,158 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:25:16,158 INFO ]: Start difference. First operand 11 states and 14 transitions. Second operand 4 states. [2018-06-22 11:25:16,212 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:16,212 INFO ]: Finished difference Result 13 states and 16 transitions. [2018-06-22 11:25:16,213 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:25:16,213 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:25:16,213 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:16,213 INFO ]: With dead ends: 13 [2018-06-22 11:25:16,213 INFO ]: Without dead ends: 10 [2018-06-22 11:25:16,214 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 11:25:16,214 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 11:25:16,216 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 11:25:16,216 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 11:25:16,216 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 11:25:16,216 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2018-06-22 11:25:16,217 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:16,217 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 11:25:16,217 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:25:16,217 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 11:25:16,217 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:25:16,217 INFO ]: Found error trace [2018-06-22 11:25:16,217 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:25:16,217 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:16,217 INFO ]: Analyzing trace with hash -1236726569, now seen corresponding path program 1 times [2018-06-22 11:25:16,217 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:16,217 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:16,218 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:16,218 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:16,218 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:16,227 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:16,262 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:25:16,262 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:25:16,262 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:25:16,262 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:25:16,262 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:25:16,262 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:25:16,263 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2018-06-22 11:25:16,289 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:16,289 INFO ]: Finished difference Result 12 states and 11 transitions. [2018-06-22 11:25:16,289 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:25:16,289 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:25:16,289 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:16,290 INFO ]: With dead ends: 12 [2018-06-22 11:25:16,290 INFO ]: Without dead ends: 10 [2018-06-22 11:25:16,290 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 11:25:16,290 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 11:25:16,291 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 11:25:16,291 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 11:25:16,292 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2018-06-22 11:25:16,292 INFO ]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2018-06-22 11:25:16,292 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:16,292 INFO ]: Abstraction has 10 states and 9 transitions. [2018-06-22 11:25:16,292 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:25:16,292 INFO ]: Start isEmpty. Operand 10 states and 9 transitions. [2018-06-22 11:25:16,292 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:25:16,292 INFO ]: Found error trace [2018-06-22 11:25:16,292 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:25:16,292 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:16,293 INFO ]: Analyzing trace with hash -1179468267, now seen corresponding path program 1 times [2018-06-22 11:25:16,293 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:16,293 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:16,293 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:16,293 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:16,293 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:16,310 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:16,364 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:25:16,364 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:25:16,364 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:25:16,364 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:25:16,364 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:25:16,364 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:25:16,364 INFO ]: Start difference. First operand 10 states and 9 transitions. Second operand 4 states. [2018-06-22 11:25:16,366 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:16,366 INFO ]: Finished difference Result 6 states and 5 transitions. [2018-06-22 11:25:16,367 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:25:16,367 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:25:16,367 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:16,367 INFO ]: With dead ends: 6 [2018-06-22 11:25:16,367 INFO ]: Without dead ends: 0 [2018-06-22 11:25:16,367 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 11:25:16,367 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:25:16,367 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:25:16,367 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:25:16,367 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:25:16,367 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-22 11:25:16,368 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:16,368 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:25:16,368 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:25:16,368 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:25:16,368 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:25:16,373 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:25:16 BoogieIcfgContainer [2018-06-22 11:25:16,373 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:25:16,373 INFO ]: Toolchain (without parser) took 958.88 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 232.0 MB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:16,375 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:25:16,375 INFO ]: ChcToBoogie took 47.69 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:16,376 INFO ]: Boogie Preprocessor took 41.11 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 262.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:25:16,376 INFO ]: RCFGBuilder took 194.85 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 255.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:16,377 INFO ]: TraceAbstraction took 649.86 ms. Allocated memory is still 308.8 MB. Free memory was 254.2 MB in the beginning and 232.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:16,380 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 47.69 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.11 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 262.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 194.85 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 255.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 649.86 ms. Allocated memory is still 308.8 MB. Free memory was 254.2 MB in the beginning and 232.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 2 SDslu, 36 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 368 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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/inductive2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-25-16-400.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-25-16-400.csv Received shutdown request...