java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/fib.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:31:58,586 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:31:58,588 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:31:58,598 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:31:58,599 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:31:58,600 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:31:58,601 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:31:58,602 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:31:58,604 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:31:58,605 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:31:58,606 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:31:58,606 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:31:58,607 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:31:58,608 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:31:58,609 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:31:58,609 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:31:58,611 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:31:58,613 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:31:58,615 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:31:58,616 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:31:58,617 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:31:58,620 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:31:58,620 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:31:58,620 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:31:58,621 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:31:58,622 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:31:58,623 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:31:58,623 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:31:58,625 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:31:58,625 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:31:58,625 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:31:58,626 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:31:58,626 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:31:58,627 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:31:58,628 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:31:58,628 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 11:31:58,646 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:31:58,646 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:31:58,646 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:31:58,647 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:31:58,647 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:31:58,648 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:31:58,648 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:31:58,648 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:31:58,648 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:31:58,649 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:31:58,649 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:31:58,649 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:31:58,649 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:31:58,650 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:31:58,650 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:31:58,650 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:31:58,650 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:31:58,650 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:31:58,651 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:31:58,656 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:31:58,656 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:31:58,708 INFO ]: Repository-Root is: /tmp [2018-06-22 11:31:58,722 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:31:58,729 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:31:58,731 INFO ]: Initializing SmtParser... [2018-06-22 11:31:58,731 INFO ]: SmtParser initialized [2018-06-22 11:31:58,732 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/fib.smt2 [2018-06-22 11:31:58,733 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 11:31:58,819 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/fib.smt2 unknown [2018-06-22 11:31:58,968 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/fib.smt2 [2018-06-22 11:31:58,972 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:31:58,979 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:31:58,980 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:31:58,980 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:31:58,980 INFO ]: ChcToBoogie initialized [2018-06-22 11:31:58,983 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:31:58" (1/1) ... [2018-06-22 11:31:59,025 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:59 Unit [2018-06-22 11:31:59,025 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:31:59,026 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:31:59,026 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:31:59,026 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:31:59,048 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:59" (1/1) ... [2018-06-22 11:31:59,048 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:59" (1/1) ... [2018-06-22 11:31:59,056 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:59" (1/1) ... [2018-06-22 11:31:59,056 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:59" (1/1) ... [2018-06-22 11:31:59,059 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:59" (1/1) ... [2018-06-22 11:31:59,060 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:59" (1/1) ... [2018-06-22 11:31:59,062 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:59" (1/1) ... [2018-06-22 11:31:59,064 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:31:59,064 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:31:59,064 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:31:59,064 INFO ]: RCFGBuilder initialized [2018-06-22 11:31:59,065 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:59" (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 [2018-06-22 11:31:59,083 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:31:59,083 INFO ]: Found specification of procedure False [2018-06-22 11:31:59,083 INFO ]: Found implementation of procedure False [2018-06-22 11:31:59,083 INFO ]: Specification and implementation of procedure fibDLRunknownCLN2 given in one single declaration [2018-06-22 11:31:59,083 INFO ]: Found specification of procedure fibDLRunknownCLN2 [2018-06-22 11:31:59,083 INFO ]: Found implementation of procedure fibDLRunknownCLN2 [2018-06-22 11:31:59,083 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:31:59,083 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:31:59,083 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 11:31:59,241 INFO ]: Using library mode [2018-06-22 11:31:59,242 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:31:59 BoogieIcfgContainer [2018-06-22 11:31:59,242 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:31:59,243 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:31:59,243 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:31:59,246 INFO ]: TraceAbstraction initialized [2018-06-22 11:31:59,246 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:31:58" (1/3) ... [2018-06-22 11:31:59,247 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3af506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:31:59, skipping insertion in model container [2018-06-22 11:31:59,247 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:59" (2/3) ... [2018-06-22 11:31:59,248 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3af506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:31:59, skipping insertion in model container [2018-06-22 11:31:59,248 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:31:59" (3/3) ... [2018-06-22 11:31:59,249 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:31:59,258 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:31:59,267 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:31:59,310 INFO ]: Using default assertion order modulation [2018-06-22 11:31:59,311 INFO ]: Interprodecural is true [2018-06-22 11:31:59,311 INFO ]: Hoare is false [2018-06-22 11:31:59,311 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:31:59,311 INFO ]: Backedges is TWOTRACK [2018-06-22 11:31:59,311 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:31:59,311 INFO ]: Difference is false [2018-06-22 11:31:59,311 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:31:59,311 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:31:59,326 INFO ]: Start isEmpty. Operand 14 states. [2018-06-22 11:31:59,336 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:31:59,336 INFO ]: Found error trace [2018-06-22 11:31:59,337 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:31:59,337 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:31:59,342 INFO ]: Analyzing trace with hash 59699345, now seen corresponding path program 1 times [2018-06-22 11:31:59,344 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:31:59,344 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:31:59,380 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:59,380 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:59,380 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:59,393 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:59,418 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:31:59,425 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:31:59,425 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:31:59,427 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:31:59,438 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:31:59,438 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:31:59,441 INFO ]: Start difference. First operand 14 states. Second operand 2 states. [2018-06-22 11:31:59,458 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:31:59,458 INFO ]: Finished difference Result 12 states and 14 transitions. [2018-06-22 11:31:59,458 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:31:59,459 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:31:59,459 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:31:59,479 INFO ]: With dead ends: 12 [2018-06-22 11:31:59,479 INFO ]: Without dead ends: 12 [2018-06-22 11:31:59,481 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:31:59,498 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 11:31:59,515 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 11:31:59,516 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 11:31:59,517 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-06-22 11:31:59,518 INFO ]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2018-06-22 11:31:59,518 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:31:59,519 INFO ]: Abstraction has 12 states and 14 transitions. [2018-06-22 11:31:59,519 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:31:59,519 INFO ]: Start isEmpty. Operand 12 states and 14 transitions. [2018-06-22 11:31:59,520 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:31:59,520 INFO ]: Found error trace [2018-06-22 11:31:59,520 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:31:59,520 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:31:59,520 INFO ]: Analyzing trace with hash -1399882610, now seen corresponding path program 1 times [2018-06-22 11:31:59,520 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:31:59,520 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:31:59,521 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:59,521 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:59,521 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:59,544 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:59,638 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:31:59,638 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:31:59,638 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:31:59,640 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:31:59,640 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:31:59,640 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:31:59,640 INFO ]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2018-06-22 11:31:59,772 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:31:59,772 INFO ]: Finished difference Result 14 states and 17 transitions. [2018-06-22 11:31:59,773 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:31:59,773 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:31:59,773 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:31:59,775 INFO ]: With dead ends: 14 [2018-06-22 11:31:59,775 INFO ]: Without dead ends: 14 [2018-06-22 11:31:59,776 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:31:59,776 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 11:31:59,781 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 11:31:59,781 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 11:31:59,782 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-06-22 11:31:59,782 INFO ]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2018-06-22 11:31:59,782 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:31:59,782 INFO ]: Abstraction has 14 states and 17 transitions. [2018-06-22 11:31:59,782 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:31:59,782 INFO ]: Start isEmpty. Operand 14 states and 17 transitions. [2018-06-22 11:31:59,783 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:31:59,783 INFO ]: Found error trace [2018-06-22 11:31:59,783 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:31:59,783 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:31:59,783 INFO ]: Analyzing trace with hash 938406100, now seen corresponding path program 1 times [2018-06-22 11:31:59,783 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:31:59,783 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:31:59,784 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:59,784 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:59,784 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:59,798 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:59,923 INFO ]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:31:59,923 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:31:59,923 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 11:31:59,934 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:59,967 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:59,976 INFO ]: Computing forward predicates... [2018-06-22 11:32:00,571 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:32:00,592 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:00,592 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2018-06-22 11:32:00,592 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:32:00,593 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:32:00,593 INFO ]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:32:00,593 INFO ]: Start difference. First operand 14 states and 17 transitions. Second operand 11 states. [2018-06-22 11:32:01,257 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:01,257 INFO ]: Finished difference Result 24 states and 45 transitions. [2018-06-22 11:32:01,258 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:32:01,258 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 11:32:01,258 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:01,259 INFO ]: With dead ends: 24 [2018-06-22 11:32:01,259 INFO ]: Without dead ends: 24 [2018-06-22 11:32:01,260 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:32:01,260 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-22 11:32:01,269 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-06-22 11:32:01,269 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-22 11:32:01,271 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 33 transitions. [2018-06-22 11:32:01,271 INFO ]: Start accepts. Automaton has 20 states and 33 transitions. Word has length 17 [2018-06-22 11:32:01,271 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:01,271 INFO ]: Abstraction has 20 states and 33 transitions. [2018-06-22 11:32:01,271 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:32:01,271 INFO ]: Start isEmpty. Operand 20 states and 33 transitions. [2018-06-22 11:32:01,273 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:32:01,273 INFO ]: Found error trace [2018-06-22 11:32:01,273 INFO ]: trace histogram [9, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:01,273 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:01,273 INFO ]: Analyzing trace with hash -1172323418, now seen corresponding path program 2 times [2018-06-22 11:32:01,273 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:01,273 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:01,274 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:01,274 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:32:01,274 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:01,300 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:01,731 INFO ]: Checked inductivity of 120 backedges. 35 proven. 37 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-06-22 11:32:01,731 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:01,731 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 11:32:01,745 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:01,790 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:32:01,790 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:01,794 INFO ]: Computing forward predicates... [2018-06-22 11:32:01,855 INFO ]: Checked inductivity of 120 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-06-22 11:32:01,883 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:01,883 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2018-06-22 11:32:01,883 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:32:01,884 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:32:01,884 INFO ]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:32:01,884 INFO ]: Start difference. First operand 20 states and 33 transitions. Second operand 10 states. [2018-06-22 11:32:02,131 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:02,131 INFO ]: Finished difference Result 26 states and 42 transitions. [2018-06-22 11:32:02,132 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:32:02,132 INFO ]: Start accepts. Automaton has 10 states. Word has length 41 [2018-06-22 11:32:02,133 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:02,134 INFO ]: With dead ends: 26 [2018-06-22 11:32:02,134 INFO ]: Without dead ends: 26 [2018-06-22 11:32:02,134 INFO ]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:32:02,134 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 11:32:02,142 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 22. [2018-06-22 11:32:02,142 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-22 11:32:02,143 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2018-06-22 11:32:02,143 INFO ]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 41 [2018-06-22 11:32:02,143 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:02,143 INFO ]: Abstraction has 22 states and 33 transitions. [2018-06-22 11:32:02,143 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:32:02,143 INFO ]: Start isEmpty. Operand 22 states and 33 transitions. [2018-06-22 11:32:02,145 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:32:02,145 INFO ]: Found error trace [2018-06-22 11:32:02,145 INFO ]: trace histogram [11, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:02,145 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:02,145 INFO ]: Analyzing trace with hash -1905599252, now seen corresponding path program 3 times [2018-06-22 11:32:02,145 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:02,145 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:02,148 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:02,148 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:32:02,148 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:02,173 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:02,306 INFO ]: Checked inductivity of 185 backedges. 47 proven. 62 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-06-22 11:32:02,306 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:02,306 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:02,322 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:32:02,370 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-06-22 11:32:02,370 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:02,374 INFO ]: Computing forward predicates... [2018-06-22 11:32:02,409 INFO ]: Checked inductivity of 185 backedges. 47 proven. 62 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-06-22 11:32:02,428 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:02,428 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-06-22 11:32:02,428 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:32:02,428 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:32:02,428 INFO ]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:32:02,428 INFO ]: Start difference. First operand 22 states and 33 transitions. Second operand 11 states. [2018-06-22 11:32:02,743 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:02,743 INFO ]: Finished difference Result 30 states and 50 transitions. [2018-06-22 11:32:02,743 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:32:02,743 INFO ]: Start accepts. Automaton has 11 states. Word has length 49 [2018-06-22 11:32:02,744 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:02,746 INFO ]: With dead ends: 30 [2018-06-22 11:32:02,746 INFO ]: Without dead ends: 30 [2018-06-22 11:32:02,747 INFO ]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:32:02,747 INFO ]: Start minimizeSevpa. Operand 30 states. [2018-06-22 11:32:02,753 INFO ]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-06-22 11:32:02,754 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 11:32:02,755 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 44 transitions. [2018-06-22 11:32:02,755 INFO ]: Start accepts. Automaton has 27 states and 44 transitions. Word has length 49 [2018-06-22 11:32:02,755 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:02,755 INFO ]: Abstraction has 27 states and 44 transitions. [2018-06-22 11:32:02,755 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:32:02,755 INFO ]: Start isEmpty. Operand 27 states and 44 transitions. [2018-06-22 11:32:02,757 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-22 11:32:02,757 INFO ]: Found error trace [2018-06-22 11:32:02,757 INFO ]: trace histogram [15, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:02,757 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:02,757 INFO ]: Analyzing trace with hash 1815730808, now seen corresponding path program 4 times [2018-06-22 11:32:02,757 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:02,757 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:02,758 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:02,758 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:32:02,758 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:02,784 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:02,882 INFO ]: Checked inductivity of 357 backedges. 63 proven. 88 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2018-06-22 11:32:02,882 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:02,882 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:02,895 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:32:02,946 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:32:02,946 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:02,951 INFO ]: Computing forward predicates... [2018-06-22 11:32:03,059 INFO ]: Checked inductivity of 357 backedges. 210 proven. 11 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-06-22 11:32:03,078 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:03,078 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-22 11:32:03,079 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:32:03,079 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:32:03,079 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:32:03,079 INFO ]: Start difference. First operand 27 states and 44 transitions. Second operand 8 states. [2018-06-22 11:32:03,161 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:03,161 INFO ]: Finished difference Result 28 states and 41 transitions. [2018-06-22 11:32:03,162 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:32:03,162 INFO ]: Start accepts. Automaton has 8 states. Word has length 65 [2018-06-22 11:32:03,162 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:03,163 INFO ]: With dead ends: 28 [2018-06-22 11:32:03,163 INFO ]: Without dead ends: 28 [2018-06-22 11:32:03,163 INFO ]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:32:03,163 INFO ]: Start minimizeSevpa. Operand 28 states. [2018-06-22 11:32:03,168 INFO ]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-06-22 11:32:03,168 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-22 11:32:03,169 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 41 transitions. [2018-06-22 11:32:03,169 INFO ]: Start accepts. Automaton has 28 states and 41 transitions. Word has length 65 [2018-06-22 11:32:03,169 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:03,169 INFO ]: Abstraction has 28 states and 41 transitions. [2018-06-22 11:32:03,169 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:32:03,170 INFO ]: Start isEmpty. Operand 28 states and 41 transitions. [2018-06-22 11:32:03,173 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-22 11:32:03,173 INFO ]: Found error trace [2018-06-22 11:32:03,173 INFO ]: trace histogram [15, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:32:03,173 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:32:03,173 INFO ]: Analyzing trace with hash -1532703752, now seen corresponding path program 5 times [2018-06-22 11:32:03,173 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:32:03,174 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:32:03,174 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:03,174 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:32:03,174 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:32:03,202 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:03,430 INFO ]: Checked inductivity of 357 backedges. 59 proven. 129 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-06-22 11:32:03,430 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:32:03,430 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:32:03,435 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:32:03,492 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2018-06-22 11:32:03,492 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:32:03,496 INFO ]: Computing forward predicates... [2018-06-22 11:32:03,793 INFO ]: Checked inductivity of 357 backedges. 79 proven. 122 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-06-22 11:32:03,812 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:32:03,813 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 27 [2018-06-22 11:32:03,813 INFO ]: Interpolant automaton has 27 states [2018-06-22 11:32:03,813 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-22 11:32:03,814 INFO ]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2018-06-22 11:32:03,814 INFO ]: Start difference. First operand 28 states and 41 transitions. Second operand 27 states. [2018-06-22 11:32:04,917 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:32:04,917 INFO ]: Finished difference Result 40 states and 89 transitions. [2018-06-22 11:32:04,918 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 11:32:04,918 INFO ]: Start accepts. Automaton has 27 states. Word has length 65 [2018-06-22 11:32:04,918 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:32:04,918 INFO ]: With dead ends: 40 [2018-06-22 11:32:04,918 INFO ]: Without dead ends: 0 [2018-06-22 11:32:04,919 INFO ]: 0 DeclaredPredicates, 113 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=417, Invalid=1475, Unknown=0, NotChecked=0, Total=1892 [2018-06-22 11:32:04,919 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:32:04,919 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:32:04,919 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:32:04,919 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:32:04,919 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2018-06-22 11:32:04,919 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:32:04,919 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:32:04,919 INFO ]: Interpolant automaton has 27 states. [2018-06-22 11:32:04,920 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:32:04,920 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:32:04,925 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:32:04 BoogieIcfgContainer [2018-06-22 11:32:04,925 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:32:04,925 INFO ]: Toolchain (without parser) took 5952.56 ms. Allocated memory was 308.8 MB in the beginning and 364.4 MB in the end (delta: 55.6 MB). Free memory was 266.2 MB in the beginning and 207.3 MB in the end (delta: 58.9 MB). Peak memory consumption was 114.5 MB. Max. memory is 3.6 GB. [2018-06-22 11:32:04,929 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:32:04,930 INFO ]: ChcToBoogie took 46.07 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 264.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:32:04,930 INFO ]: Boogie Preprocessor took 37.53 ms. Allocated memory is still 308.8 MB. Free memory was 264.2 MB in the beginning and 262.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:32:04,931 INFO ]: RCFGBuilder took 177.81 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 256.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:32:04,931 INFO ]: TraceAbstraction took 5681.57 ms. Allocated memory was 308.8 MB in the beginning and 364.4 MB in the end (delta: 55.6 MB). Free memory was 255.2 MB in the beginning and 207.3 MB in the end (delta: 47.9 MB). Peak memory consumption was 103.5 MB. Max. memory is 3.6 GB. [2018-06-22 11:32:04,935 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 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 46.07 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 264.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.53 ms. Allocated memory is still 308.8 MB. Free memory was 264.2 MB in the beginning and 262.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 177.81 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 256.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5681.57 ms. Allocated memory was 308.8 MB in the beginning and 364.4 MB in the end (delta: 55.6 MB). Free memory was 255.2 MB in the beginning and 207.3 MB in the end (delta: 47.9 MB). Peak memory consumption was 103.5 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. SAFE Result, 5.6s OverallTime, 7 OverallIterations, 15 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 99 SDtfs, 81 SDslu, 277 SDs, 0 SdLazy, 616 SolverSat, 320 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 345 GetRequests, 248 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=6, 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, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 488 NumberOfCodeBlocks, 482 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 476 ConstructedInterpolants, 0 QuantifiedInterpolants, 58656 SizeOfPredicates, 49 NumberOfNonLiveVariables, 797 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 1502/2056 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.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-32-04-946.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fib.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-32-04-946.csv Received shutdown request...