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/churchNum03.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:30:37,618 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:30:37,620 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:30:37,634 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:30:37,634 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:30:37,636 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:30:37,637 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:30:37,640 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:30:37,642 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:30:37,642 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:30:37,644 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:30:37,644 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:30:37,645 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:30:37,645 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:30:37,646 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:30:37,649 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:30:37,650 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:30:37,651 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:30:37,662 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:30:37,663 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:30:37,664 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:30:37,665 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:30:37,667 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:30:37,671 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:30:37,671 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:30:37,672 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:30:37,672 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:30:37,673 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:30:37,673 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:30:37,677 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:30:37,677 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:30:37,678 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:30:37,678 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:30:37,678 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:30:37,679 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:30:37,679 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:30:37,680 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:30:37,696 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:30:37,696 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:30:37,696 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:30:37,697 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:30:37,698 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:30:37,698 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:30:37,698 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:30:37,698 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:30:37,698 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:30:37,699 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:30:37,701 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:30:37,701 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:30:37,701 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:30:37,702 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:30:37,702 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:30:37,702 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:30:37,702 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:30:37,702 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:30:37,703 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:30:37,703 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:30:37,703 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:30:37,705 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:30:37,706 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:30:37,760 INFO ]: Repository-Root is: /tmp [2018-06-26 18:30:37,779 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:30:37,783 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:30:37,785 INFO ]: Initializing SmtParser... [2018-06-26 18:30:37,785 INFO ]: SmtParser initialized [2018-06-26 18:30:37,785 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/churchNum03.smt2 [2018-06-26 18:30:37,787 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 18:30:37,876 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/churchNum03.smt2 unknown [2018-06-26 18:30:38,761 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/churchNum03.smt2 [2018-06-26 18:30:38,768 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:30:38,774 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:30:38,775 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:30:38,775 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:30:38,775 INFO ]: ChcToBoogie initialized [2018-06-26 18:30:38,778 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:30:38" (1/1) ... [2018-06-26 18:30:38,846 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:30:38 Unit [2018-06-26 18:30:38,846 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:30:38,847 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:30:38,847 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:30:38,847 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:30:38,867 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:30:38" (1/1) ... [2018-06-26 18:30:38,868 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:30:38" (1/1) ... [2018-06-26 18:30:38,876 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:30:38" (1/1) ... [2018-06-26 18:30:38,877 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:30:38" (1/1) ... [2018-06-26 18:30:38,885 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:30:38" (1/1) ... [2018-06-26 18:30:38,887 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:30:38" (1/1) ... [2018-06-26 18:30:38,889 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:30:38" (1/1) ... [2018-06-26 18:30:38,894 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:30:38,894 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:30:38,894 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:30:38,894 INFO ]: RCFGBuilder initialized [2018-06-26 18:30:38,895 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:30:38" (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) [2018-06-26 18:30:38,924 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:30:38,924 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:30:38,925 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:30:38,925 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:30:38,925 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:30:38,925 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 [2018-06-26 18:30:39,659 INFO ]: Using library mode [2018-06-26 18:30:39,660 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:30:39 BoogieIcfgContainer [2018-06-26 18:30:39,660 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:30:39,660 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:30:39,660 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:30:39,661 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:30:39,662 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:30:39" (1/1) ... [2018-06-26 18:30:39,689 INFO ]: Initial Icfg 30 locations, 37 edges [2018-06-26 18:30:39,690 INFO ]: Using Remove infeasible edges [2018-06-26 18:30:39,691 INFO ]: Using Maximize final states [2018-06-26 18:30:39,691 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:30:39,691 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:30:39,693 INFO ]: Using Remove sink states [2018-06-26 18:30:39,697 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:30:39,697 INFO ]: Using Use SBE [2018-06-26 18:30:39,710 INFO ]: SBE split 0 edges [2018-06-26 18:30:39,721 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-26 18:30:39,723 INFO ]: 0 new accepting states [2018-06-26 18:30:40,265 INFO ]: Removed 42 edges and 17 locations by large block encoding [2018-06-26 18:30:40,267 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:30:40,268 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:30:40,269 INFO ]: 0 new accepting states [2018-06-26 18:30:40,269 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:30:40,270 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:30:40,270 INFO ]: Encoded RCFG 11 locations, 17 edges [2018-06-26 18:30:40,270 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:30:40 BasicIcfg [2018-06-26 18:30:40,270 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:30:40,271 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:30:40,271 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:30:40,274 INFO ]: TraceAbstraction initialized [2018-06-26 18:30:40,275 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:30:38" (1/4) ... [2018-06-26 18:30:40,275 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5544b09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:30:40, skipping insertion in model container [2018-06-26 18:30:40,276 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:30:38" (2/4) ... [2018-06-26 18:30:40,276 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5544b09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:30:40, skipping insertion in model container [2018-06-26 18:30:40,276 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:30:39" (3/4) ... [2018-06-26 18:30:40,276 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5544b09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:30:40, skipping insertion in model container [2018-06-26 18:30:40,276 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:30:40" (4/4) ... [2018-06-26 18:30:40,279 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:30:40,290 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:30:40,308 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:30:40,355 INFO ]: Using default assertion order modulation [2018-06-26 18:30:40,356 INFO ]: Interprodecural is true [2018-06-26 18:30:40,356 INFO ]: Hoare is false [2018-06-26 18:30:40,356 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:30:40,356 INFO ]: Backedges is TWOTRACK [2018-06-26 18:30:40,356 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:30:40,356 INFO ]: Difference is false [2018-06-26 18:30:40,356 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:30:40,356 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:30:40,368 INFO ]: Start isEmpty. Operand 11 states. [2018-06-26 18:30:40,388 INFO ]: Finished isEmpty. Found accepting run of length 5 [2018-06-26 18:30:40,388 INFO ]: Found error trace [2018-06-26 18:30:40,389 INFO ]: trace histogram [1, 1, 1, 1] [2018-06-26 18:30:40,389 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:30:40,396 INFO ]: Analyzing trace with hash 1186927, now seen corresponding path program 1 times [2018-06-26 18:30:40,398 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:30:40,398 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:30:40,444 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:30:40,444 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:30:40,444 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:30:40,489 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:30:40,489 INFO ]: Advancing trace checker [2018-06-26 18:30:40,489 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 (exit command is (exit), workingDir is null) [2018-06-26 18:30:40,502 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:30:40,590 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:30:40,599 INFO ]: Computing forward predicates... [2018-06-26 18:30:40,686 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:30:40,707 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:30:40,708 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:30:40,709 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:30:40,722 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:30:40,722 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:30:40,724 INFO ]: Start difference. First operand 11 states. Second operand 3 states. [2018-06-26 18:30:40,956 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:30:40,956 INFO ]: Finished difference Result 19 states and 30 transitions. [2018-06-26 18:30:40,956 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:30:40,957 INFO ]: Start accepts. Automaton has 3 states. Word has length 4 [2018-06-26 18:30:40,958 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:30:40,964 INFO ]: With dead ends: 19 [2018-06-26 18:30:40,965 INFO ]: Without dead ends: 19 [2018-06-26 18:30:40,966 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 18:30:40,984 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-26 18:30:41,005 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-26 18:30:41,006 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-26 18:30:41,008 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2018-06-26 18:30:41,009 INFO ]: Start accepts. Automaton has 19 states and 30 transitions. Word has length 4 [2018-06-26 18:30:41,010 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:30:41,010 INFO ]: Abstraction has 19 states and 30 transitions. [2018-06-26 18:30:41,010 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:30:41,010 INFO ]: Start isEmpty. Operand 19 states and 30 transitions. [2018-06-26 18:30:41,012 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:30:41,012 INFO ]: Found error trace [2018-06-26 18:30:41,012 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:30:41,012 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:30:41,012 INFO ]: Analyzing trace with hash 36404694, now seen corresponding path program 1 times [2018-06-26 18:30:41,012 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:30:41,012 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:30:41,013 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:30:41,013 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:30:41,013 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:30:41,033 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:30:41,033 INFO ]: Advancing trace checker [2018-06-26 18:30:41,033 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:30:41,049 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:30:41,126 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:30:41,128 INFO ]: Computing forward predicates... [2018-06-26 18:30:41,143 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:30:41,162 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:30:41,163 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:30:41,164 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:30:41,164 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:30:41,164 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:30:41,164 INFO ]: Start difference. First operand 19 states and 30 transitions. Second operand 3 states. [2018-06-26 18:30:41,462 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:30:41,462 INFO ]: Finished difference Result 27 states and 44 transitions. [2018-06-26 18:30:41,464 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:30:41,464 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:30:41,464 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:30:41,466 INFO ]: With dead ends: 27 [2018-06-26 18:30:41,466 INFO ]: Without dead ends: 27 [2018-06-26 18:30:41,467 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:30:41,467 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-26 18:30:41,472 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-26 18:30:41,473 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-26 18:30:41,476 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 44 transitions. [2018-06-26 18:30:41,476 INFO ]: Start accepts. Automaton has 27 states and 44 transitions. Word has length 5 [2018-06-26 18:30:41,476 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:30:41,476 INFO ]: Abstraction has 27 states and 44 transitions. [2018-06-26 18:30:41,476 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:30:41,476 INFO ]: Start isEmpty. Operand 27 states and 44 transitions. [2018-06-26 18:30:41,477 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-26 18:30:41,477 INFO ]: Found error trace [2018-06-26 18:30:41,477 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:30:41,477 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:30:41,477 INFO ]: Analyzing trace with hash -1954615095, now seen corresponding path program 1 times [2018-06-26 18:30:41,477 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:30:41,477 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:30:41,480 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:30:41,480 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:30:41,480 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:30:41,498 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:30:41,498 INFO ]: Advancing trace checker [2018-06-26 18:30:41,498 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:30:41,532 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:30:41,671 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:30:41,676 INFO ]: Computing forward predicates... [2018-06-26 18:30:41,808 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:30:41,836 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:30:41,836 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 18:30:41,836 INFO ]: Interpolant automaton has 4 states [2018-06-26 18:30:41,836 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 18:30:41,836 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 18:30:41,836 INFO ]: Start difference. First operand 27 states and 44 transitions. Second operand 4 states. [2018-06-26 18:30:42,638 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:30:42,638 INFO ]: Finished difference Result 51 states and 106 transitions. [2018-06-26 18:30:42,638 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 18:30:42,639 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-26 18:30:42,639 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:30:42,643 INFO ]: With dead ends: 51 [2018-06-26 18:30:42,643 INFO ]: Without dead ends: 40 [2018-06-26 18:30:42,643 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:30:42,643 INFO ]: Start minimizeSevpa. Operand 40 states. [2018-06-26 18:30:42,653 INFO ]: Finished minimizeSevpa. Reduced states from 40 to 29. [2018-06-26 18:30:42,653 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-26 18:30:42,655 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 48 transitions. [2018-06-26 18:30:42,655 INFO ]: Start accepts. Automaton has 29 states and 48 transitions. Word has length 9 [2018-06-26 18:30:42,655 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:30:42,655 INFO ]: Abstraction has 29 states and 48 transitions. [2018-06-26 18:30:42,655 INFO ]: Interpolant automaton has 4 states. [2018-06-26 18:30:42,655 INFO ]: Start isEmpty. Operand 29 states and 48 transitions. [2018-06-26 18:30:42,657 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-26 18:30:42,657 INFO ]: Found error trace [2018-06-26 18:30:42,657 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-06-26 18:30:42,657 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:30:42,657 INFO ]: Analyzing trace with hash 1637775614, now seen corresponding path program 1 times [2018-06-26 18:30:42,657 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:30:42,657 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:30:42,658 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:30:42,658 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:30:42,658 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:30:42,671 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:30:42,671 INFO ]: Advancing trace checker [2018-06-26 18:30:42,671 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:30:42,681 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:30:42,887 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:30:42,894 INFO ]: Computing forward predicates... [2018-06-26 18:30:42,924 INFO ]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-26 18:30:42,944 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:30:42,944 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-06-26 18:30:42,944 INFO ]: Interpolant automaton has 5 states [2018-06-26 18:30:42,944 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 18:30:42,945 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:30:42,945 INFO ]: Start difference. First operand 29 states and 48 transitions. Second operand 5 states. [2018-06-26 18:30:43,077 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:30:43,077 INFO ]: Finished difference Result 20 states and 33 transitions. [2018-06-26 18:30:43,077 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-26 18:30:43,077 INFO ]: Start accepts. Automaton has 5 states. Word has length 14 [2018-06-26 18:30:43,077 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:30:43,077 INFO ]: With dead ends: 20 [2018-06-26 18:30:43,077 INFO ]: Without dead ends: 0 [2018-06-26 18:30:43,078 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-26 18:30:43,078 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:30:43,078 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:30:43,078 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:30:43,078 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:30:43,078 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-06-26 18:30:43,078 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:30:43,078 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:30:43,078 INFO ]: Interpolant automaton has 5 states. [2018-06-26 18:30:43,078 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:30:43,078 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:30:43,080 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:30:43,081 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:30:43 BasicIcfg [2018-06-26 18:30:43,082 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:30:43,082 INFO ]: Toolchain (without parser) took 4313.93 ms. Allocated memory was 306.7 MB in the beginning and 367.5 MB in the end (delta: 60.8 MB). Free memory was 210.1 MB in the beginning and 208.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 62.8 MB. Max. memory is 3.6 GB. [2018-06-26 18:30:43,083 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:30:43,083 INFO ]: ChcToBoogie took 71.78 ms. Allocated memory is still 306.7 MB. Free memory was 210.1 MB in the beginning and 207.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:30:43,084 INFO ]: Boogie Preprocessor took 46.85 ms. Allocated memory is still 306.7 MB. Free memory was 207.1 MB in the beginning and 205.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:30:43,084 INFO ]: RCFGBuilder took 765.72 ms. Allocated memory was 306.7 MB in the beginning and 327.2 MB in the end (delta: 20.4 MB). Free memory was 205.1 MB in the beginning and 272.2 MB in the end (delta: -67.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 3.6 GB. [2018-06-26 18:30:43,084 INFO ]: BlockEncodingV2 took 609.63 ms. Allocated memory is still 327.2 MB. Free memory was 272.2 MB in the beginning and 220.5 MB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 3.6 GB. [2018-06-26 18:30:43,084 INFO ]: TraceAbstraction took 2810.60 ms. Allocated memory was 327.2 MB in the beginning and 367.5 MB in the end (delta: 40.4 MB). Free memory was 220.5 MB in the beginning and 208.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 52.7 MB. Max. memory is 3.6 GB. [2018-06-26 18:30:43,087 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 30 locations, 37 edges - StatisticsResult: Encoded RCFG 11 locations, 17 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 71.78 ms. Allocated memory is still 306.7 MB. Free memory was 210.1 MB in the beginning and 207.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 46.85 ms. Allocated memory is still 306.7 MB. Free memory was 207.1 MB in the beginning and 205.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 765.72 ms. Allocated memory was 306.7 MB in the beginning and 327.2 MB in the end (delta: 20.4 MB). Free memory was 205.1 MB in the beginning and 272.2 MB in the end (delta: -67.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 609.63 ms. Allocated memory is still 327.2 MB. Free memory was 272.2 MB in the beginning and 220.5 MB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2810.60 ms. Allocated memory was 327.2 MB in the beginning and 367.5 MB in the end (delta: 40.4 MB). Free memory was 220.5 MB in the beginning and 208.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 52.7 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 2 procedures, 11 locations, 1 error locations. SAFE Result, 2.7s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 87 SDtfs, 27 SDslu, 57 SDs, 0 SdLazy, 109 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, 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, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 489 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2896 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 10/11 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/churchNum03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-30-43-096.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/churchNum03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-30-43-096.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/churchNum03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-30-43-096.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/churchNum03.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-30-43-096.csv Received shutdown request...