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/termination/Fibonacci02.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:40:00,519 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:40:00,521 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:40:00,532 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:40:00,532 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:40:00,533 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:40:00,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:40:00,536 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:40:00,538 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:40:00,539 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:40:00,540 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:40:00,540 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:40:00,541 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:40:00,542 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:40:00,543 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:40:00,544 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:40:00,545 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:40:00,547 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:40:00,551 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:40:00,552 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:40:00,553 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:40:00,556 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:40:00,556 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:40:00,556 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:40:00,557 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:40:00,558 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:40:00,559 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:40:00,559 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:40:00,560 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:40:00,561 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:40:00,561 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:40:00,562 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:40:00,562 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:40:00,563 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:40:00,564 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:40:00,564 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 11:40:00,578 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:40:00,578 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:40:00,578 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:40:00,579 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:40:00,580 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:40:00,580 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:40:00,580 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:40:00,581 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:40:00,581 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:40:00,581 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:40:00,581 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:40:00,582 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:40:00,582 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:40:00,582 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:40:00,582 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:40:00,582 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:40:00,583 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:40:00,583 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:40:00,583 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:40:00,585 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:40:00,585 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:40:00,629 INFO ]: Repository-Root is: /tmp [2018-06-22 11:40:00,647 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:40:00,651 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:40:00,653 INFO ]: Initializing SmtParser... [2018-06-22 11:40:00,654 INFO ]: SmtParser initialized [2018-06-22 11:40:00,654 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/Fibonacci02.smt2 [2018-06-22 11:40:00,655 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 11:40:00,745 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/Fibonacci02.smt2 unknown [2018-06-22 11:40:01,095 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/Fibonacci02.smt2 [2018-06-22 11:40:01,105 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:40:01,111 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:40:01,112 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:40:01,112 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:40:01,112 INFO ]: ChcToBoogie initialized [2018-06-22 11:40:01,115 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:40:01" (1/1) ... [2018-06-22 11:40:01,174 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:40:01 Unit [2018-06-22 11:40:01,174 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:40:01,175 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:40:01,175 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:40:01,175 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:40:01,198 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:40:01" (1/1) ... [2018-06-22 11:40:01,198 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:40:01" (1/1) ... [2018-06-22 11:40:01,208 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:40:01" (1/1) ... [2018-06-22 11:40:01,208 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:40:01" (1/1) ... [2018-06-22 11:40:01,224 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:40:01" (1/1) ... [2018-06-22 11:40:01,227 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:40:01" (1/1) ... [2018-06-22 11:40:01,229 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:40:01" (1/1) ... [2018-06-22 11:40:01,231 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:40:01,232 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:40:01,232 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:40:01,232 INFO ]: RCFGBuilder initialized [2018-06-22 11:40:01,233 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:40:01" (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 11:40:01,242 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:40:01,242 INFO ]: Found specification of procedure False [2018-06-22 11:40:01,242 INFO ]: Found implementation of procedure False [2018-06-22 11:40:01,242 INFO ]: Specification and implementation of procedure failDLRunknownCLN3 given in one single declaration [2018-06-22 11:40:01,242 INFO ]: Found specification of procedure failDLRunknownCLN3 [2018-06-22 11:40:01,242 INFO ]: Found implementation of procedure failDLRunknownCLN3 [2018-06-22 11:40:01,242 INFO ]: Specification and implementation of procedure fib_1030DLRunknownCLN11 given in one single declaration [2018-06-22 11:40:01,242 INFO ]: Found specification of procedure fib_1030DLRunknownCLN11 [2018-06-22 11:40:01,242 INFO ]: Found implementation of procedure fib_1030DLRunknownCLN11 [2018-06-22 11:40:01,242 INFO ]: Specification and implementation of procedure fib_without_checking_1060DLRunknownCLN16 given in one single declaration [2018-06-22 11:40:01,242 INFO ]: Found specification of procedure fib_without_checking_1060DLRunknownCLN16 [2018-06-22 11:40:01,242 INFO ]: Found implementation of procedure fib_without_checking_1060DLRunknownCLN16 [2018-06-22 11:40:01,242 INFO ]: Specification and implementation of procedure fib_1030DLRunknownCLN12 given in one single declaration [2018-06-22 11:40:01,242 INFO ]: Found specification of procedure fib_1030DLRunknownCLN12 [2018-06-22 11:40:01,242 INFO ]: Found implementation of procedure fib_1030DLRunknownCLN12 [2018-06-22 11:40:01,242 INFO ]: Specification and implementation of procedure botDLRunknownCLN2 given in one single declaration [2018-06-22 11:40:01,242 INFO ]: Found specification of procedure botDLRunknownCLN2 [2018-06-22 11:40:01,242 INFO ]: Found implementation of procedure botDLRunknownCLN2 [2018-06-22 11:40:01,242 INFO ]: Specification and implementation of procedure failDLRunknownCLN4 given in one single declaration [2018-06-22 11:40:01,242 INFO ]: Found specification of procedure failDLRunknownCLN4 [2018-06-22 11:40:01,242 INFO ]: Found implementation of procedure failDLRunknownCLN4 [2018-06-22 11:40:01,242 INFO ]: Specification and implementation of procedure fib_1030DLRunknownCLN8 given in one single declaration [2018-06-22 11:40:01,242 INFO ]: Found specification of procedure fib_1030DLRunknownCLN8 [2018-06-22 11:40:01,243 INFO ]: Found implementation of procedure fib_1030DLRunknownCLN8 [2018-06-22 11:40:01,243 INFO ]: Specification and implementation of procedure fib_1030DLRunknownCLN7 given in one single declaration [2018-06-22 11:40:01,243 INFO ]: Found specification of procedure fib_1030DLRunknownCLN7 [2018-06-22 11:40:01,243 INFO ]: Found implementation of procedure fib_1030DLRunknownCLN7 [2018-06-22 11:40:01,243 INFO ]: Specification and implementation of procedure fib_without_checking_1060DLRunknownCLN15 given in one single declaration [2018-06-22 11:40:01,243 INFO ]: Found specification of procedure fib_without_checking_1060DLRunknownCLN15 [2018-06-22 11:40:01,243 INFO ]: Found implementation of procedure fib_without_checking_1060DLRunknownCLN15 [2018-06-22 11:40:01,243 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:40:01,243 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:40:01,243 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 11:40:01,838 INFO ]: Using library mode [2018-06-22 11:40:01,839 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:40:01 BoogieIcfgContainer [2018-06-22 11:40:01,839 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:40:01,840 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:40:01,840 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:40:01,843 INFO ]: TraceAbstraction initialized [2018-06-22 11:40:01,844 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:40:01" (1/3) ... [2018-06-22 11:40:01,845 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e14b798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:40:01, skipping insertion in model container [2018-06-22 11:40:01,845 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:40:01" (2/3) ... [2018-06-22 11:40:01,845 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e14b798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:40:01, skipping insertion in model container [2018-06-22 11:40:01,845 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:40:01" (3/3) ... [2018-06-22 11:40:01,847 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:40:01,856 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:40:01,867 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:40:01,901 INFO ]: Using default assertion order modulation [2018-06-22 11:40:01,901 INFO ]: Interprodecural is true [2018-06-22 11:40:01,901 INFO ]: Hoare is false [2018-06-22 11:40:01,901 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:40:01,901 INFO ]: Backedges is TWOTRACK [2018-06-22 11:40:01,901 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:40:01,901 INFO ]: Difference is false [2018-06-22 11:40:01,901 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:40:01,901 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:40:01,958 INFO ]: Start isEmpty. Operand 65 states. [2018-06-22 11:40:01,987 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:40:01,987 INFO ]: Found error trace [2018-06-22 11:40:01,988 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:40:01,988 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:40:01,992 INFO ]: Analyzing trace with hash 200699067, now seen corresponding path program 1 times [2018-06-22 11:40:01,993 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:40:01,993 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:40:02,031 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:40:02,031 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:40:02,031 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:40:02,048 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:40:02,078 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:40:02,080 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:40:02,080 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:40:02,082 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:40:02,093 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:40:02,093 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:40:02,095 INFO ]: Start difference. First operand 65 states. Second operand 2 states. [2018-06-22 11:40:02,127 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:40:02,127 INFO ]: Finished difference Result 54 states and 74 transitions. [2018-06-22 11:40:02,127 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:40:02,129 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:40:02,129 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:40:02,154 INFO ]: With dead ends: 54 [2018-06-22 11:40:02,154 INFO ]: Without dead ends: 49 [2018-06-22 11:40:02,157 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 11:40:02,180 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-22 11:40:02,232 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-06-22 11:40:02,234 INFO ]: Start removeUnreachable. Operand 49 states. [2018-06-22 11:40:02,239 INFO ]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2018-06-22 11:40:02,240 INFO ]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 5 [2018-06-22 11:40:02,240 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:40:02,240 INFO ]: Abstraction has 49 states and 68 transitions. [2018-06-22 11:40:02,240 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:40:02,240 INFO ]: Start isEmpty. Operand 49 states and 68 transitions. [2018-06-22 11:40:02,253 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:40:02,253 INFO ]: Found error trace [2018-06-22 11:40:02,253 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:40:02,254 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:40:02,254 INFO ]: Analyzing trace with hash -1254390697, now seen corresponding path program 1 times [2018-06-22 11:40:02,254 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:40:02,254 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:40:02,256 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:40:02,256 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:40:02,256 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:40:02,311 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:40:02,613 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:40:02,613 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:40:02,614 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:40:02,618 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:40:02,619 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:40:02,619 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:40:02,619 INFO ]: Start difference. First operand 49 states and 68 transitions. Second operand 5 states. [2018-06-22 11:40:03,234 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:40:03,234 INFO ]: Finished difference Result 54 states and 83 transitions. [2018-06-22 11:40:03,234 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:40:03,234 INFO ]: Start accepts. Automaton has 5 states. Word has length 25 [2018-06-22 11:40:03,235 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:40:03,237 INFO ]: With dead ends: 54 [2018-06-22 11:40:03,237 INFO ]: Without dead ends: 54 [2018-06-22 11:40:03,238 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:40:03,238 INFO ]: Start minimizeSevpa. Operand 54 states. [2018-06-22 11:40:03,254 INFO ]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-06-22 11:40:03,254 INFO ]: Start removeUnreachable. Operand 54 states. [2018-06-22 11:40:03,257 INFO ]: Finished removeUnreachable. Reduced from 54 states to 54 states and 83 transitions. [2018-06-22 11:40:03,257 INFO ]: Start accepts. Automaton has 54 states and 83 transitions. Word has length 25 [2018-06-22 11:40:03,257 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:40:03,257 INFO ]: Abstraction has 54 states and 83 transitions. [2018-06-22 11:40:03,257 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:40:03,257 INFO ]: Start isEmpty. Operand 54 states and 83 transitions. [2018-06-22 11:40:03,259 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:40:03,259 INFO ]: Found error trace [2018-06-22 11:40:03,259 INFO ]: trace histogram [3, 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 11:40:03,259 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:40:03,259 INFO ]: Analyzing trace with hash 2102626846, now seen corresponding path program 1 times [2018-06-22 11:40:03,260 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:40:03,260 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:40:03,260 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:40:03,261 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:40:03,261 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:40:03,282 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:40:03,392 INFO ]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 11:40:03,393 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:40:03,395 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:40:03,395 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:40:03,395 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:40:03,395 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:40:03,396 INFO ]: Start difference. First operand 54 states and 83 transitions. Second operand 4 states. [2018-06-22 11:40:03,534 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:40:03,534 INFO ]: Finished difference Result 48 states and 77 transitions. [2018-06-22 11:40:03,535 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:40:03,535 INFO ]: Start accepts. Automaton has 4 states. Word has length 29 [2018-06-22 11:40:03,535 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:40:03,535 INFO ]: With dead ends: 48 [2018-06-22 11:40:03,535 INFO ]: Without dead ends: 0 [2018-06-22 11:40:03,536 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 3 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 11:40:03,536 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:40:03,536 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:40:03,536 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:40:03,536 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:40:03,536 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-22 11:40:03,536 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:40:03,536 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:40:03,536 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:40:03,536 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:40:03,536 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:40:03,540 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:40:03 BoogieIcfgContainer [2018-06-22 11:40:03,540 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:40:03,541 INFO ]: Toolchain (without parser) took 2435.17 ms. Allocated memory was 303.0 MB in the beginning and 324.5 MB in the end (delta: 21.5 MB). Free memory was 252.4 MB in the beginning and 288.7 MB in the end (delta: -36.2 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:40:03,543 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.0 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:40:03,544 INFO ]: ChcToBoogie took 63.10 ms. Allocated memory is still 303.0 MB. Free memory was 251.4 MB in the beginning and 249.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:40:03,544 INFO ]: Boogie Preprocessor took 56.34 ms. Allocated memory is still 303.0 MB. Free memory was 249.4 MB in the beginning and 247.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:40:03,545 INFO ]: RCFGBuilder took 606.80 ms. Allocated memory is still 303.0 MB. Free memory was 247.4 MB in the beginning and 227.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:40:03,545 INFO ]: TraceAbstraction took 1700.22 ms. Allocated memory was 303.0 MB in the beginning and 324.5 MB in the end (delta: 21.5 MB). Free memory was 227.4 MB in the beginning and 288.7 MB in the end (delta: -61.3 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:40:03,548 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 303.0 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 63.10 ms. Allocated memory is still 303.0 MB. Free memory was 251.4 MB in the beginning and 249.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 56.34 ms. Allocated memory is still 303.0 MB. Free memory was 249.4 MB in the beginning and 247.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 606.80 ms. Allocated memory is still 303.0 MB. Free memory was 247.4 MB in the beginning and 227.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1700.22 ms. Allocated memory was 303.0 MB in the beginning and 324.5 MB in the end (delta: 21.5 MB). Free memory was 227.4 MB in the beginning and 288.7 MB in the end (delta: -61.3 MB). There was no memory consumed. 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 11 procedures, 65 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 188 SDtfs, 1 SDslu, 253 SDs, 0 SdLazy, 96 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2784 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 12/12 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/Fibonacci02.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-40-03-559.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Fibonacci02.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-40-03-559.csv Received shutdown request...