java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/llreve/fib_merged_safe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:00:16,467 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:00:16,469 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:00:16,485 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:00:16,486 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:00:16,487 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:00:16,489 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:00:16,490 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:00:16,492 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:00:16,493 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:00:16,494 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:00:16,495 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:00:16,496 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:00:16,496 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:00:16,500 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:00:16,500 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:00:16,502 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:00:16,511 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:00:16,512 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:00:16,513 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:00:16,516 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:00:16,518 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:00:16,518 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:00:16,518 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:00:16,523 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:00:16,523 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:00:16,524 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:00:16,525 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:00:16,525 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:00:16,526 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:00:16,530 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:00:16,530 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:00:16,531 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:00:16,531 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:00:16,532 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:00:16,532 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 11:00:16,549 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:00:16,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:00:16,550 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:00:16,550 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:00:16,551 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:00:16,551 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:00:16,551 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:00:16,551 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:00:16,551 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:00:16,552 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:00:16,552 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:00:16,552 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:00:16,552 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:00:16,552 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:00:16,552 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:00:16,553 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:00:16,553 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:00:16,553 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:00:16,553 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:00:16,554 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:00:16,555 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:00:16,596 INFO ]: Repository-Root is: /tmp [2018-06-22 11:00:16,614 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:00:16,618 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:00:16,620 INFO ]: Initializing SmtParser... [2018-06-22 11:00:16,620 INFO ]: SmtParser initialized [2018-06-22 11:00:16,620 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/fib_merged_safe.c-1.smt2 [2018-06-22 11:00:16,622 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 11:00:16,717 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/fib_merged_safe.c-1.smt2 unknown [2018-06-22 11:00:16,879 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/fib_merged_safe.c-1.smt2 [2018-06-22 11:00:16,884 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:00:16,890 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:00:16,891 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:00:16,891 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:00:16,891 INFO ]: ChcToBoogie initialized [2018-06-22 11:00:16,895 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:00:16" (1/1) ... [2018-06-22 11:00:16,942 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:00:16 Unit [2018-06-22 11:00:16,942 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:00:16,942 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:00:16,942 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:00:16,943 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:00:16,965 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:00:16" (1/1) ... [2018-06-22 11:00:16,965 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:00:16" (1/1) ... [2018-06-22 11:00:16,972 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:00:16" (1/1) ... [2018-06-22 11:00:16,972 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:00:16" (1/1) ... [2018-06-22 11:00:16,974 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:00:16" (1/1) ... [2018-06-22 11:00:16,975 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:00:16" (1/1) ... [2018-06-22 11:00:16,976 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:00:16" (1/1) ... [2018-06-22 11:00:16,977 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:00:16,978 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:00:16,978 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:00:16,978 INFO ]: RCFGBuilder initialized [2018-06-22 11:00:16,979 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:00:16" (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 11:00:16,992 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:00:16,992 INFO ]: Found specification of procedure False [2018-06-22 11:00:16,992 INFO ]: Found implementation of procedure False [2018-06-22 11:00:16,992 INFO ]: Specification and implementation of procedure inv_main15 given in one single declaration [2018-06-22 11:00:16,992 INFO ]: Found specification of procedure inv_main15 [2018-06-22 11:00:16,992 INFO ]: Found implementation of procedure inv_main15 [2018-06-22 11:00:16,992 INFO ]: Specification and implementation of procedure inv_main7 given in one single declaration [2018-06-22 11:00:16,992 INFO ]: Found specification of procedure inv_main7 [2018-06-22 11:00:16,992 INFO ]: Found implementation of procedure inv_main7 [2018-06-22 11:00:16,992 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:00:16,992 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:00:16,992 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 11:00:17,148 INFO ]: Using library mode [2018-06-22 11:00:17,149 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:00:17 BoogieIcfgContainer [2018-06-22 11:00:17,149 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:00:17,150 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:00:17,150 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:00:17,163 INFO ]: TraceAbstraction initialized [2018-06-22 11:00:17,163 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:00:16" (1/3) ... [2018-06-22 11:00:17,164 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341d80ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:00:17, skipping insertion in model container [2018-06-22 11:00:17,164 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:00:16" (2/3) ... [2018-06-22 11:00:17,164 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341d80ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:00:17, skipping insertion in model container [2018-06-22 11:00:17,164 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:00:17" (3/3) ... [2018-06-22 11:00:17,166 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:00:17,188 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:00:17,195 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:00:17,245 INFO ]: Using default assertion order modulation [2018-06-22 11:00:17,245 INFO ]: Interprodecural is true [2018-06-22 11:00:17,245 INFO ]: Hoare is false [2018-06-22 11:00:17,245 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:00:17,246 INFO ]: Backedges is TWOTRACK [2018-06-22 11:00:17,246 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:00:17,246 INFO ]: Difference is false [2018-06-22 11:00:17,246 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:00:17,246 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:00:17,259 INFO ]: Start isEmpty. Operand 17 states. [2018-06-22 11:00:17,275 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:00:17,275 INFO ]: Found error trace [2018-06-22 11:00:17,277 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:00:17,277 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:00:17,283 INFO ]: Analyzing trace with hash 1960305001, now seen corresponding path program 1 times [2018-06-22 11:00:17,285 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:00:17,285 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:00:17,324 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:00:17,324 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:00:17,324 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:00:17,366 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:00:17,722 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:00:17,726 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:00:17,726 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 11:00:17,727 INFO ]: Interpolant automaton has 6 states [2018-06-22 11:00:17,737 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 11:00:17,737 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:00:17,739 INFO ]: Start difference. First operand 17 states. Second operand 6 states. [2018-06-22 11:00:18,093 WARN ]: Spent 268.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-06-22 11:00:18,144 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:00:18,144 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 11:00:18,145 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:00:18,145 INFO ]: Start accepts. Automaton has 6 states. Word has length 13 [2018-06-22 11:00:18,146 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:00:18,154 INFO ]: With dead ends: 19 [2018-06-22 11:00:18,154 INFO ]: Without dead ends: 19 [2018-06-22 11:00:18,156 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:00:18,171 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:00:18,192 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 11:00:18,193 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:00:18,193 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 11:00:18,195 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2018-06-22 11:00:18,195 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:00:18,195 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 11:00:18,195 INFO ]: Interpolant automaton has 6 states. [2018-06-22 11:00:18,195 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 11:00:18,196 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:00:18,197 INFO ]: Found error trace [2018-06-22 11:00:18,197 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:00:18,197 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:00:18,197 INFO ]: Analyzing trace with hash 177759404, now seen corresponding path program 1 times [2018-06-22 11:00:18,197 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:00:18,197 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:00:18,198 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:00:18,198 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:00:18,198 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:00:18,234 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:00:18,706 INFO ]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:00:18,706 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:00:18,706 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:00:18,716 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:00:18,751 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:00:18,765 INFO ]: Computing forward predicates... [2018-06-22 11:00:19,440 WARN ]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 11:00:19,461 INFO ]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:00:19,493 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:00:19,493 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-06-22 11:00:19,493 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:00:19,494 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:00:19,494 INFO ]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:00:19,494 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 14 states. [2018-06-22 11:00:19,961 WARN ]: Spent 290.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2018-06-22 11:00:20,146 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:00:20,146 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 11:00:20,147 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:00:20,147 INFO ]: Start accepts. Automaton has 14 states. Word has length 21 [2018-06-22 11:00:20,147 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:00:20,147 INFO ]: With dead ends: 19 [2018-06-22 11:00:20,147 INFO ]: Without dead ends: 0 [2018-06-22 11:00:20,148 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:00:20,148 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:00:20,148 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:00:20,148 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:00:20,148 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:00:20,149 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 11:00:20,149 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:00:20,149 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:00:20,149 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:00:20,149 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:00:20,149 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:00:20,154 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:00:20 BoogieIcfgContainer [2018-06-22 11:00:20,154 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:00:20,155 INFO ]: Toolchain (without parser) took 3271.05 ms. Allocated memory was 303.0 MB in the beginning and 324.0 MB in the end (delta: 21.0 MB). Free memory was 259.6 MB in the beginning and 244.5 MB in the end (delta: 15.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:00:20,156 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.0 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:00:20,157 INFO ]: ChcToBoogie took 51.12 ms. Allocated memory is still 303.0 MB. Free memory was 259.6 MB in the beginning and 257.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:00:20,157 INFO ]: Boogie Preprocessor took 34.87 ms. Allocated memory is still 303.0 MB. Free memory was 257.5 MB in the beginning and 256.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:00:20,158 INFO ]: RCFGBuilder took 171.07 ms. Allocated memory is still 303.0 MB. Free memory was 256.5 MB in the beginning and 249.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:00:20,159 INFO ]: TraceAbstraction took 3003.85 ms. Allocated memory was 303.0 MB in the beginning and 324.0 MB in the end (delta: 21.0 MB). Free memory was 248.5 MB in the beginning and 244.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:00:20,162 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 268.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 51.12 ms. Allocated memory is still 303.0 MB. Free memory was 259.6 MB in the beginning and 257.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.87 ms. Allocated memory is still 303.0 MB. Free memory was 257.5 MB in the beginning and 256.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 171.07 ms. Allocated memory is still 303.0 MB. Free memory was 256.5 MB in the beginning and 249.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3003.85 ms. Allocated memory was 303.0 MB in the beginning and 324.0 MB in the end (delta: 21.0 MB). Free memory was 248.5 MB in the beginning and 244.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 12 SDslu, 107 SDs, 0 SdLazy, 62 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 9112 SizeOfPredicates, 8 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/14 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/fib_merged_safe.c-1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-00-20-173.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fib_merged_safe.c-1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-00-20-173.csv Received shutdown request...