java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hopv/lia/termination/Fibonacci02.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:28:18,787 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:28:18,790 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:28:18,803 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:28:18,804 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:28:18,805 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:28:18,808 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:28:18,810 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:28:18,812 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:28:18,813 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:28:18,814 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:28:18,815 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:28:18,815 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:28:18,816 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:28:18,821 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:28:18,822 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:28:18,824 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:28:18,836 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:28:18,837 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:28:18,838 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:28:18,839 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:28:18,841 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:28:18,841 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:28:18,841 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:28:18,842 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:28:18,843 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:28:18,848 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:28:18,849 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:28:18,850 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:28:18,850 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:28:18,851 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:28:18,851 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:28:18,852 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:28:18,858 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:28:18,859 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:28:18,859 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:28:18,882 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:28:18,882 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:28:18,882 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:28:18,882 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:28:18,883 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:28:18,884 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:28:18,884 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:28:18,884 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:28:18,884 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:28:18,884 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:28:18,885 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:28:18,886 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:28:18,886 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:28:18,886 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:28:18,886 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:28:18,887 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:28:18,887 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:28:18,887 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:28:18,887 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:28:18,887 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:28:18,887 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:28:18,892 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:28:18,892 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:28:18,955 INFO ]: Repository-Root is: /tmp [2018-06-24 21:28:18,972 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:28:18,978 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:28:18,980 INFO ]: Initializing SmtParser... [2018-06-24 21:28:18,980 INFO ]: SmtParser initialized [2018-06-24 21:28:18,981 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/Fibonacci02.smt2 [2018-06-24 21:28:18,982 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 [2018-06-24 21:28:19,069 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/Fibonacci02.smt2 unknown [2018-06-24 21:28:19,336 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/Fibonacci02.smt2 [2018-06-24 21:28:19,340 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:28:19,346 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:28:19,347 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:28:19,347 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:28:19,347 INFO ]: ChcToBoogie initialized [2018-06-24 21:28:19,350 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:28:19" (1/1) ... [2018-06-24 21:28:19,412 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:19 Unit [2018-06-24 21:28:19,413 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:28:19,413 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:28:19,413 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:28:19,413 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:28:19,432 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:19" (1/1) ... [2018-06-24 21:28:19,432 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:19" (1/1) ... [2018-06-24 21:28:19,439 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:19" (1/1) ... [2018-06-24 21:28:19,439 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:19" (1/1) ... [2018-06-24 21:28:19,445 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:19" (1/1) ... [2018-06-24 21:28:19,458 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:19" (1/1) ... [2018-06-24 21:28:19,460 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:19" (1/1) ... [2018-06-24 21:28:19,462 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:28:19,463 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:28:19,463 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:28:19,463 INFO ]: RCFGBuilder initialized [2018-06-24 21:28:19,473 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:19" (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) [2018-06-24 21:28:19,496 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:28:19,496 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:28:19,496 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:28:19,496 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:28:19,496 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:28:19,496 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 [2018-06-24 21:28:20,086 INFO ]: Using library mode [2018-06-24 21:28:20,086 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:28:20 BoogieIcfgContainer [2018-06-24 21:28:20,086 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:28:20,089 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:28:20,089 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:28:20,090 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:28:20,091 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:28:20" (1/1) ... [2018-06-24 21:28:20,119 INFO ]: Initial Icfg 48 locations, 77 edges [2018-06-24 21:28:20,121 INFO ]: Using Remove infeasible edges [2018-06-24 21:28:20,121 INFO ]: Using Maximize final states [2018-06-24 21:28:20,122 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:28:20,122 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:28:20,123 INFO ]: Using Remove sink states [2018-06-24 21:28:20,127 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:28:20,127 INFO ]: Using Use SBE [2018-06-24 21:28:20,174 INFO ]: SBE split 3 edges [2018-06-24 21:28:20,180 INFO ]: Removed 4 edges and 2 locations because of local infeasibility [2018-06-24 21:28:20,182 INFO ]: 0 new accepting states [2018-06-24 21:28:20,585 INFO ]: Removed 55 edges and 14 locations by large block encoding [2018-06-24 21:28:20,587 INFO ]: Removed 1 edges and 1 locations by removing sink states [2018-06-24 21:28:20,588 INFO ]: Removed 4 edges and 0 locations because of local infeasibility [2018-06-24 21:28:20,588 INFO ]: 0 new accepting states [2018-06-24 21:28:20,589 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:28:20,589 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:28:20,590 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:28:20,590 INFO ]: 0 new accepting states [2018-06-24 21:28:20,590 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:28:20,593 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:28:20,593 INFO ]: Encoded RCFG 31 locations, 61 edges [2018-06-24 21:28:20,593 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:28:20 BasicIcfg [2018-06-24 21:28:20,594 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:28:20,595 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:28:20,595 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:28:20,599 INFO ]: TraceAbstraction initialized [2018-06-24 21:28:20,600 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:28:19" (1/4) ... [2018-06-24 21:28:20,601 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284fb270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:28:20, skipping insertion in model container [2018-06-24 21:28:20,601 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:28:19" (2/4) ... [2018-06-24 21:28:20,601 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284fb270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:28:20, skipping insertion in model container [2018-06-24 21:28:20,601 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:28:20" (3/4) ... [2018-06-24 21:28:20,601 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284fb270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:28:20, skipping insertion in model container [2018-06-24 21:28:20,601 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:28:20" (4/4) ... [2018-06-24 21:28:20,603 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:28:20,612 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:28:20,621 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:28:20,683 INFO ]: Using default assertion order modulation [2018-06-24 21:28:20,684 INFO ]: Interprodecural is true [2018-06-24 21:28:20,684 INFO ]: Hoare is false [2018-06-24 21:28:20,684 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:28:20,684 INFO ]: Backedges is TWOTRACK [2018-06-24 21:28:20,684 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:28:20,684 INFO ]: Difference is false [2018-06-24 21:28:20,684 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:28:20,684 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:28:20,699 INFO ]: Start isEmpty. Operand 31 states. [2018-06-24 21:28:20,719 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:28:20,719 INFO ]: Found error trace [2018-06-24 21:28:20,720 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:28:20,720 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:28:20,726 INFO ]: Analyzing trace with hash 43316415, now seen corresponding path program 1 times [2018-06-24 21:28:20,728 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:28:20,729 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:28:20,767 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:20,767 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:20,767 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:20,799 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:28:20,899 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:28:20,902 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:28:20,902 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:28:20,904 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:28:20,919 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:28:20,920 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:28:20,924 INFO ]: Start difference. First operand 31 states. Second operand 3 states. [2018-06-24 21:28:21,588 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:28:21,588 INFO ]: Finished difference Result 41 states and 77 transitions. [2018-06-24 21:28:21,589 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:28:21,590 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:28:21,590 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:28:21,600 INFO ]: With dead ends: 41 [2018-06-24 21:28:21,600 INFO ]: Without dead ends: 37 [2018-06-24 21:28:21,602 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:28:21,620 INFO ]: Start minimizeSevpa. Operand 37 states. [2018-06-24 21:28:21,651 INFO ]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-06-24 21:28:21,652 INFO ]: Start removeUnreachable. Operand 37 states. [2018-06-24 21:28:21,655 INFO ]: Finished removeUnreachable. Reduced from 37 states to 37 states and 66 transitions. [2018-06-24 21:28:21,657 INFO ]: Start accepts. Automaton has 37 states and 66 transitions. Word has length 5 [2018-06-24 21:28:21,657 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:28:21,657 INFO ]: Abstraction has 37 states and 66 transitions. [2018-06-24 21:28:21,657 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:28:21,657 INFO ]: Start isEmpty. Operand 37 states and 66 transitions. [2018-06-24 21:28:21,659 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:28:21,659 INFO ]: Found error trace [2018-06-24 21:28:21,659 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:28:21,660 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:28:21,660 INFO ]: Analyzing trace with hash 1366453889, now seen corresponding path program 1 times [2018-06-24 21:28:21,660 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:28:21,660 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:28:21,661 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:21,661 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:21,661 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:21,669 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:28:21,692 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:28:21,692 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:28:21,692 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:28:21,694 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:28:21,694 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:28:21,694 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:28:21,694 INFO ]: Start difference. First operand 37 states and 66 transitions. Second operand 3 states. [2018-06-24 21:28:22,299 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:28:22,299 INFO ]: Finished difference Result 49 states and 92 transitions. [2018-06-24 21:28:22,299 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:28:22,299 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 21:28:22,299 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:28:22,302 INFO ]: With dead ends: 49 [2018-06-24 21:28:22,302 INFO ]: Without dead ends: 49 [2018-06-24 21:28:22,303 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:28:22,303 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-24 21:28:22,312 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-06-24 21:28:22,312 INFO ]: Start removeUnreachable. Operand 49 states. [2018-06-24 21:28:22,314 INFO ]: Finished removeUnreachable. Reduced from 49 states to 49 states and 92 transitions. [2018-06-24 21:28:22,314 INFO ]: Start accepts. Automaton has 49 states and 92 transitions. Word has length 6 [2018-06-24 21:28:22,315 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:28:22,315 INFO ]: Abstraction has 49 states and 92 transitions. [2018-06-24 21:28:22,315 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:28:22,315 INFO ]: Start isEmpty. Operand 49 states and 92 transitions. [2018-06-24 21:28:22,316 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 21:28:22,316 INFO ]: Found error trace [2018-06-24 21:28:22,316 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:28:22,317 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:28:22,317 INFO ]: Analyzing trace with hash 2105693636, now seen corresponding path program 1 times [2018-06-24 21:28:22,317 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:28:22,317 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:28:22,317 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:22,317 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:28:22,317 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:28:22,326 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:28:22,359 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:28:22,359 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:28:22,359 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:28:22,359 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:28:22,359 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:28:22,359 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:28:22,360 INFO ]: Start difference. First operand 49 states and 92 transitions. Second operand 3 states. [2018-06-24 21:28:22,712 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:28:22,713 INFO ]: Finished difference Result 60 states and 124 transitions. [2018-06-24 21:28:22,713 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:28:22,713 INFO ]: Start accepts. Automaton has 3 states. Word has length 11 [2018-06-24 21:28:22,713 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:28:22,713 INFO ]: With dead ends: 60 [2018-06-24 21:28:22,713 INFO ]: Without dead ends: 0 [2018-06-24 21:28:22,713 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:28:22,713 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:28:22,713 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:28:22,713 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:28:22,714 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:28:22,714 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-06-24 21:28:22,714 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:28:22,714 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:28:22,714 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:28:22,714 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:28:22,714 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:28:22,716 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:28:22,717 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:28:22 BasicIcfg [2018-06-24 21:28:22,717 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:28:22,718 INFO ]: Toolchain (without parser) took 3377.68 ms. Allocated memory was 307.2 MB in the beginning and 326.6 MB in the end (delta: 19.4 MB). Free memory was 255.6 MB in the beginning and 248.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:22,720 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:28:22,721 INFO ]: ChcToBoogie took 66.27 ms. Allocated memory is still 307.2 MB. Free memory was 255.6 MB in the beginning and 253.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:22,721 INFO ]: Boogie Preprocessor took 49.34 ms. Allocated memory is still 307.2 MB. Free memory was 253.6 MB in the beginning and 251.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:22,722 INFO ]: RCFGBuilder took 623.58 ms. Allocated memory is still 307.2 MB. Free memory was 251.6 MB in the beginning and 229.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:22,722 INFO ]: BlockEncodingV2 took 504.86 ms. Allocated memory is still 307.2 MB. Free memory was 229.7 MB in the beginning and 209.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:28:22,723 INFO ]: TraceAbstraction took 2122.52 ms. Allocated memory was 307.2 MB in the beginning and 326.6 MB in the end (delta: 19.4 MB). Free memory was 209.7 MB in the beginning and 248.7 MB in the end (delta: -39.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:28:22,726 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 48 locations, 77 edges - StatisticsResult: Encoded RCFG 31 locations, 61 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 66.27 ms. Allocated memory is still 307.2 MB. Free memory was 255.6 MB in the beginning and 253.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 49.34 ms. Allocated memory is still 307.2 MB. Free memory was 253.6 MB in the beginning and 251.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 623.58 ms. Allocated memory is still 307.2 MB. Free memory was 251.6 MB in the beginning and 229.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 504.86 ms. Allocated memory is still 307.2 MB. Free memory was 229.7 MB in the beginning and 209.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2122.52 ms. Allocated memory was 307.2 MB in the beginning and 326.6 MB in the end (delta: 19.4 MB). Free memory was 209.7 MB in the beginning and 248.7 MB in the end (delta: -39.0 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 2 procedures, 31 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 167 SDtfs, 23 SDslu, 54 SDs, 0 SdLazy, 111 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=2, 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, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 287 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 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_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-28-22-738.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Fibonacci02.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-28-22-738.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Fibonacci02.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-28-22-738.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Fibonacci02.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-28-22-738.csv Received shutdown request...