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/Fibonacci03.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:31:00,106 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:31:00,107 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:31:00,118 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:31:00,118 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:31:00,119 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:31:00,120 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:31:00,125 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:31:00,129 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:31:00,130 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:31:00,130 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:31:00,131 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:31:00,131 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:31:00,132 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:31:00,133 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:31:00,134 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:31:00,135 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:31:00,144 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:31:00,148 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:31:00,151 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:31:00,152 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:31:00,153 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:31:00,155 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:31:00,155 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:31:00,158 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:31:00,159 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:31:00,160 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:31:00,161 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:31:00,162 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:31:00,163 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:31:00,163 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:31:00,163 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:31:00,164 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:31:00,164 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:31:00,165 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:31:00,165 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:31:00,165 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:31:00,187 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:31:00,188 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:31:00,188 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:31:00,188 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:31:00,189 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:31:00,189 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:31:00,189 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:31:00,190 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:31:00,193 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:31:00,193 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:31:00,193 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:31:00,193 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:31:00,193 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:31:00,193 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:31:00,194 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:31:00,194 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:31:00,194 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:31:00,194 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:31:00,194 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:31:00,194 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:31:00,195 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:31:00,197 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:31:00,198 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:31:00,259 INFO ]: Repository-Root is: /tmp [2018-06-26 18:31:00,274 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:31:00,279 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:31:00,281 INFO ]: Initializing SmtParser... [2018-06-26 18:31:00,281 INFO ]: SmtParser initialized [2018-06-26 18:31:00,282 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/Fibonacci03.smt2 [2018-06-26 18:31:00,283 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 [2018-06-26 18:31:00,374 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/Fibonacci03.smt2 unknown [2018-06-26 18:31:00,720 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/Fibonacci03.smt2 [2018-06-26 18:31:00,730 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:31:00,737 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:31:00,737 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:31:00,737 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:31:00,737 INFO ]: ChcToBoogie initialized [2018-06-26 18:31:00,741 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:31:00" (1/1) ... [2018-06-26 18:31:00,805 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:00 Unit [2018-06-26 18:31:00,805 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:31:00,806 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:31:00,806 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:31:00,806 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:31:00,825 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:00" (1/1) ... [2018-06-26 18:31:00,826 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:00" (1/1) ... [2018-06-26 18:31:00,844 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:00" (1/1) ... [2018-06-26 18:31:00,844 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:00" (1/1) ... [2018-06-26 18:31:00,853 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:00" (1/1) ... [2018-06-26 18:31:00,856 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:00" (1/1) ... [2018-06-26 18:31:00,865 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:00" (1/1) ... [2018-06-26 18:31:00,868 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:31:00,868 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:31:00,868 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:31:00,868 INFO ]: RCFGBuilder initialized [2018-06-26 18:31:00,869 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:00" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:31:00,889 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:31:00,889 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:31:00,889 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:31:00,889 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:31:00,889 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:31:00,889 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 18:31:01,416 INFO ]: Using library mode [2018-06-26 18:31:01,416 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:31:01 BoogieIcfgContainer [2018-06-26 18:31:01,416 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:31:01,417 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:31:01,417 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:31:01,418 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:31:01,418 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:31:01" (1/1) ... [2018-06-26 18:31:01,440 INFO ]: Initial Icfg 45 locations, 71 edges [2018-06-26 18:31:01,441 INFO ]: Using Remove infeasible edges [2018-06-26 18:31:01,442 INFO ]: Using Maximize final states [2018-06-26 18:31:01,442 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:31:01,442 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:31:01,444 INFO ]: Using Remove sink states [2018-06-26 18:31:01,445 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:31:01,445 INFO ]: Using Use SBE [2018-06-26 18:31:01,488 INFO ]: SBE split 3 edges [2018-06-26 18:31:01,496 INFO ]: Removed 4 edges and 2 locations because of local infeasibility [2018-06-26 18:31:01,498 INFO ]: 0 new accepting states [2018-06-26 18:31:02,055 INFO ]: Removed 51 edges and 13 locations by large block encoding [2018-06-26 18:31:02,057 INFO ]: Removed 1 edges and 1 locations by removing sink states [2018-06-26 18:31:02,058 INFO ]: Removed 4 edges and 0 locations because of local infeasibility [2018-06-26 18:31:02,058 INFO ]: 0 new accepting states [2018-06-26 18:31:02,059 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:31:02,059 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:31:02,060 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:31:02,060 INFO ]: 0 new accepting states [2018-06-26 18:31:02,060 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:31:02,061 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:31:02,061 INFO ]: Encoded RCFG 29 locations, 57 edges [2018-06-26 18:31:02,061 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:31:02 BasicIcfg [2018-06-26 18:31:02,061 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:31:02,062 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:31:02,062 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:31:02,065 INFO ]: TraceAbstraction initialized [2018-06-26 18:31:02,065 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:31:00" (1/4) ... [2018-06-26 18:31:02,066 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3337959d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:31:02, skipping insertion in model container [2018-06-26 18:31:02,066 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:31:00" (2/4) ... [2018-06-26 18:31:02,066 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3337959d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:31:02, skipping insertion in model container [2018-06-26 18:31:02,066 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:31:01" (3/4) ... [2018-06-26 18:31:02,066 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3337959d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:31:02, skipping insertion in model container [2018-06-26 18:31:02,066 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:31:02" (4/4) ... [2018-06-26 18:31:02,068 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:31:02,075 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:31:02,080 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:31:02,115 INFO ]: Using default assertion order modulation [2018-06-26 18:31:02,116 INFO ]: Interprodecural is true [2018-06-26 18:31:02,116 INFO ]: Hoare is false [2018-06-26 18:31:02,116 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:31:02,116 INFO ]: Backedges is TWOTRACK [2018-06-26 18:31:02,116 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:31:02,116 INFO ]: Difference is false [2018-06-26 18:31:02,116 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:31:02,116 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:31:02,128 INFO ]: Start isEmpty. Operand 29 states. [2018-06-26 18:31:02,139 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:31:02,139 INFO ]: Found error trace [2018-06-26 18:31:02,140 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:31:02,140 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:31:02,145 INFO ]: Analyzing trace with hash 43604372, now seen corresponding path program 1 times [2018-06-26 18:31:02,147 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:31:02,147 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:31:02,184 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:02,185 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:02,185 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:02,228 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:31:02,298 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:31:02,300 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:31:02,300 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:31:02,301 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:31:02,312 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:31:02,313 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:31:02,315 INFO ]: Start difference. First operand 29 states. Second operand 3 states. [2018-06-26 18:31:03,010 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:31:03,010 INFO ]: Finished difference Result 52 states and 101 transitions. [2018-06-26 18:31:03,012 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:31:03,013 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:31:03,014 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:31:03,040 INFO ]: With dead ends: 52 [2018-06-26 18:31:03,040 INFO ]: Without dead ends: 47 [2018-06-26 18:31:03,042 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 [2018-06-26 18:31:03,070 INFO ]: Start minimizeSevpa. Operand 47 states. [2018-06-26 18:31:03,117 INFO ]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-06-26 18:31:03,118 INFO ]: Start removeUnreachable. Operand 47 states. [2018-06-26 18:31:03,127 INFO ]: Finished removeUnreachable. Reduced from 47 states to 47 states and 85 transitions. [2018-06-26 18:31:03,128 INFO ]: Start accepts. Automaton has 47 states and 85 transitions. Word has length 5 [2018-06-26 18:31:03,129 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:31:03,129 INFO ]: Abstraction has 47 states and 85 transitions. [2018-06-26 18:31:03,129 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:31:03,129 INFO ]: Start isEmpty. Operand 47 states and 85 transitions. [2018-06-26 18:31:03,135 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:31:03,135 INFO ]: Found error trace [2018-06-26 18:31:03,135 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:31:03,136 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:31:03,136 INFO ]: Analyzing trace with hash 44170401, now seen corresponding path program 1 times [2018-06-26 18:31:03,136 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:31:03,136 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:31:03,137 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:03,137 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:03,137 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:03,154 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:31:03,229 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:31:03,229 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:31:03,229 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:31:03,231 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:31:03,231 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:31:03,231 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:31:03,231 INFO ]: Start difference. First operand 47 states and 85 transitions. Second operand 3 states. [2018-06-26 18:31:03,776 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:31:03,776 INFO ]: Finished difference Result 69 states and 126 transitions. [2018-06-26 18:31:03,777 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:31:03,777 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:31:03,777 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:31:03,782 INFO ]: With dead ends: 69 [2018-06-26 18:31:03,782 INFO ]: Without dead ends: 69 [2018-06-26 18:31:03,783 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 [2018-06-26 18:31:03,783 INFO ]: Start minimizeSevpa. Operand 69 states. [2018-06-26 18:31:03,796 INFO ]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-06-26 18:31:03,796 INFO ]: Start removeUnreachable. Operand 69 states. [2018-06-26 18:31:03,799 INFO ]: Finished removeUnreachable. Reduced from 69 states to 69 states and 126 transitions. [2018-06-26 18:31:03,800 INFO ]: Start accepts. Automaton has 69 states and 126 transitions. Word has length 5 [2018-06-26 18:31:03,800 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:31:03,800 INFO ]: Abstraction has 69 states and 126 transitions. [2018-06-26 18:31:03,800 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:31:03,800 INFO ]: Start isEmpty. Operand 69 states and 126 transitions. [2018-06-26 18:31:03,801 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:31:03,801 INFO ]: Found error trace [2018-06-26 18:31:03,801 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:31:03,801 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:31:03,801 INFO ]: Analyzing trace with hash 43902282, now seen corresponding path program 1 times [2018-06-26 18:31:03,801 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:31:03,801 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:31:03,802 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:03,802 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:31:03,802 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:31:03,809 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:31:03,855 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:31:03,855 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:31:03,855 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:31:03,855 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:31:03,855 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:31:03,855 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:31:03,855 INFO ]: Start difference. First operand 69 states and 126 transitions. Second operand 3 states. [2018-06-26 18:31:04,174 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:31:04,174 INFO ]: Finished difference Result 68 states and 129 transitions. [2018-06-26 18:31:04,174 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:31:04,175 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:31:04,175 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:31:04,175 INFO ]: With dead ends: 68 [2018-06-26 18:31:04,175 INFO ]: Without dead ends: 0 [2018-06-26 18:31:04,175 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 [2018-06-26 18:31:04,175 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:31:04,175 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:31:04,175 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:31:04,175 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:31:04,175 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2018-06-26 18:31:04,175 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:31:04,175 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:31:04,175 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:31:04,175 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:31:04,176 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:31:04,178 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:31:04,179 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:31:04 BasicIcfg [2018-06-26 18:31:04,179 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:31:04,180 INFO ]: Toolchain (without parser) took 3449.88 ms. Allocated memory was 305.7 MB in the beginning and 325.6 MB in the end (delta: 19.9 MB). Free memory was 254.0 MB in the beginning and 251.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 3.6 GB. [2018-06-26 18:31:04,182 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 305.7 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:31:04,182 INFO ]: ChcToBoogie took 67.95 ms. Allocated memory is still 305.7 MB. Free memory was 254.0 MB in the beginning and 252.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:31:04,183 INFO ]: Boogie Preprocessor took 62.28 ms. Allocated memory is still 305.7 MB. Free memory was 252.0 MB in the beginning and 250.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:31:04,183 INFO ]: RCFGBuilder took 548.09 ms. Allocated memory is still 305.7 MB. Free memory was 250.1 MB in the beginning and 228.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:31:04,184 INFO ]: BlockEncodingV2 took 644.62 ms. Allocated memory is still 305.7 MB. Free memory was 228.1 MB in the beginning and 210.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:31:04,184 INFO ]: TraceAbstraction took 2117.28 ms. Allocated memory was 305.7 MB in the beginning and 325.6 MB in the end (delta: 19.9 MB). Free memory was 210.1 MB in the beginning and 251.8 MB in the end (delta: -41.7 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:31:04,188 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 45 locations, 71 edges - StatisticsResult: Encoded RCFG 29 locations, 57 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 305.7 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 67.95 ms. Allocated memory is still 305.7 MB. Free memory was 254.0 MB in the beginning and 252.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 62.28 ms. Allocated memory is still 305.7 MB. Free memory was 252.0 MB in the beginning and 250.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 548.09 ms. Allocated memory is still 305.7 MB. Free memory was 250.1 MB in the beginning and 228.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 644.62 ms. Allocated memory is still 305.7 MB. Free memory was 228.1 MB in the beginning and 210.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2117.28 ms. Allocated memory was 305.7 MB in the beginning and 325.6 MB in the end (delta: 19.9 MB). Free memory was 210.1 MB in the beginning and 251.8 MB in the end (delta: -41.7 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, 29 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 146 SDtfs, 47 SDslu, 52 SDs, 0 SdLazy, 90 SolverSat, 73 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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/Fibonacci03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-31-04-198.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Fibonacci03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-31-04-198.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Fibonacci03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-31-04-198.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Fibonacci03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-31-04-198.csv Received shutdown request...