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/toChurch05.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:29:30,281 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:29:30,283 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:29:30,296 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:29:30,296 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:29:30,297 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:29:30,298 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:29:30,302 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:29:30,303 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:29:30,305 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:29:30,305 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:29:30,306 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:29:30,306 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:29:30,307 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:29:30,310 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:29:30,311 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:29:30,313 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:29:30,322 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:29:30,323 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:29:30,324 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:29:30,325 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:29:30,329 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:29:30,329 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:29:30,329 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:29:30,330 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:29:30,331 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:29:30,331 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:29:30,334 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:29:30,335 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:29:30,335 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:29:30,335 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:29:30,340 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:29:30,340 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:29:30,341 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:29:30,341 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:29:30,342 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:29:30,359 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:29:30,359 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:29:30,363 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:29:30,363 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:29:30,364 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:29:30,364 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:29:30,364 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:29:30,365 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:29:30,365 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:29:30,365 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:29:30,365 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:29:30,365 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:29:30,365 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:29:30,366 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:29:30,366 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:29:30,366 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:29:30,366 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:29:30,366 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:29:30,367 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:29:30,367 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:29:30,367 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:29:30,368 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:29:30,368 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:29:30,417 INFO ]: Repository-Root is: /tmp [2018-06-24 21:29:30,432 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:29:30,440 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:29:30,442 INFO ]: Initializing SmtParser... [2018-06-24 21:29:30,443 INFO ]: SmtParser initialized [2018-06-24 21:29:30,443 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/toChurch05.smt2 [2018-06-24 21:29:30,444 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 21:29:30,530 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/toChurch05.smt2 unknown [2018-06-24 21:29:31,324 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/toChurch05.smt2 [2018-06-24 21:29:31,328 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:29:31,334 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:29:31,334 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:29:31,334 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:29:31,335 INFO ]: ChcToBoogie initialized [2018-06-24 21:29:31,338 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:29:31" (1/1) ... [2018-06-24 21:29:31,415 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:29:31 Unit [2018-06-24 21:29:31,415 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:29:31,416 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:29:31,416 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:29:31,416 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:29:31,431 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:29:31" (1/1) ... [2018-06-24 21:29:31,431 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:29:31" (1/1) ... [2018-06-24 21:29:31,438 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:29:31" (1/1) ... [2018-06-24 21:29:31,441 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:29:31" (1/1) ... [2018-06-24 21:29:31,448 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:29:31" (1/1) ... [2018-06-24 21:29:31,450 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:29:31" (1/1) ... [2018-06-24 21:29:31,452 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:29:31" (1/1) ... [2018-06-24 21:29:31,455 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:29:31,455 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:29:31,455 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:29:31,455 INFO ]: RCFGBuilder initialized [2018-06-24 21:29:31,456 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:29:31" (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 [2018-06-24 21:29:31,477 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:29:31,477 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:29:31,477 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:29:31,478 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:29:31,478 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:29:31,478 INFO ]: Found implementation of procedure Ultimate.START [2018-06-24 21:29:32,035 INFO ]: Using library mode [2018-06-24 21:29:32,038 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:29:32 BoogieIcfgContainer [2018-06-24 21:29:32,038 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:29:32,038 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:29:32,038 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:29:32,039 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:29:32,040 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:29:32" (1/1) ... [2018-06-24 21:29:32,080 INFO ]: Initial Icfg 23 locations, 32 edges [2018-06-24 21:29:32,081 INFO ]: Using Remove infeasible edges [2018-06-24 21:29:32,082 INFO ]: Using Maximize final states [2018-06-24 21:29:32,082 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:29:32,082 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:29:32,084 INFO ]: Using Remove sink states [2018-06-24 21:29:32,085 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:29:32,085 INFO ]: Using Use SBE [2018-06-24 21:29:32,122 INFO ]: SBE split 2 edges [2018-06-24 21:29:32,126 INFO ]: Removed 4 edges and 2 locations because of local infeasibility [2018-06-24 21:29:32,128 INFO ]: 0 new accepting states [2018-06-24 21:29:32,538 INFO ]: Removed 30 edges and 8 locations by large block encoding [2018-06-24 21:29:32,540 INFO ]: Removed 1 edges and 1 locations by removing sink states [2018-06-24 21:29:32,541 INFO ]: Removed 3 edges and 0 locations because of local infeasibility [2018-06-24 21:29:32,541 INFO ]: 0 new accepting states [2018-06-24 21:29:32,543 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:29:32,543 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:29:32,544 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:29:32,544 INFO ]: 0 new accepting states [2018-06-24 21:29:32,544 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:29:32,544 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:29:32,544 INFO ]: Encoded RCFG 12 locations, 20 edges [2018-06-24 21:29:32,545 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:29:32 BasicIcfg [2018-06-24 21:29:32,545 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:29:32,546 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:29:32,546 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:29:32,551 INFO ]: TraceAbstraction initialized [2018-06-24 21:29:32,551 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:29:31" (1/4) ... [2018-06-24 21:29:32,552 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578da98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:29:32, skipping insertion in model container [2018-06-24 21:29:32,552 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:29:31" (2/4) ... [2018-06-24 21:29:32,552 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578da98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:29:32, skipping insertion in model container [2018-06-24 21:29:32,553 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:29:32" (3/4) ... [2018-06-24 21:29:32,554 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578da98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:29:32, skipping insertion in model container [2018-06-24 21:29:32,555 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:29:32" (4/4) ... [2018-06-24 21:29:32,556 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:29:32,568 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:29:32,578 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:29:32,617 INFO ]: Using default assertion order modulation [2018-06-24 21:29:32,618 INFO ]: Interprodecural is true [2018-06-24 21:29:32,618 INFO ]: Hoare is false [2018-06-24 21:29:32,618 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:29:32,618 INFO ]: Backedges is TWOTRACK [2018-06-24 21:29:32,618 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:29:32,618 INFO ]: Difference is false [2018-06-24 21:29:32,618 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:29:32,618 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:29:32,628 INFO ]: Start isEmpty. Operand 12 states. [2018-06-24 21:29:32,638 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:29:32,638 INFO ]: Found error trace [2018-06-24 21:29:32,639 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:29:32,639 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:29:32,646 INFO ]: Analyzing trace with hash 40335117, now seen corresponding path program 1 times [2018-06-24 21:29:32,648 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:29:32,649 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:29:32,683 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:29:32,683 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:29:32,683 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:29:32,715 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:29:32,715 INFO ]: Advancing trace checker [2018-06-24 21:29:32,715 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) [2018-06-24 21:29:32,737 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:29:32,812 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:29:32,821 INFO ]: Computing forward predicates... [2018-06-24 21:29:32,906 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:29:32,941 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:29:32,941 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:29:32,943 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:29:32,959 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:29:32,959 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:29:32,962 INFO ]: Start difference. First operand 12 states. Second operand 3 states. [2018-06-24 21:29:33,179 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:29:33,179 INFO ]: Finished difference Result 16 states and 27 transitions. [2018-06-24 21:29:33,181 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:29:33,182 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:29:33,182 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:29:33,197 INFO ]: With dead ends: 16 [2018-06-24 21:29:33,197 INFO ]: Without dead ends: 15 [2018-06-24 21:29:33,200 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 [2018-06-24 21:29:33,229 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-24 21:29:33,258 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-24 21:29:33,260 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-24 21:29:33,261 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 25 transitions. [2018-06-24 21:29:33,262 INFO ]: Start accepts. Automaton has 15 states and 25 transitions. Word has length 5 [2018-06-24 21:29:33,264 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:29:33,264 INFO ]: Abstraction has 15 states and 25 transitions. [2018-06-24 21:29:33,264 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:29:33,264 INFO ]: Start isEmpty. Operand 15 states and 25 transitions. [2018-06-24 21:29:33,266 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:29:33,266 INFO ]: Found error trace [2018-06-24 21:29:33,266 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:29:33,266 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:29:33,266 INFO ]: Analyzing trace with hash 40573445, now seen corresponding path program 1 times [2018-06-24 21:29:33,266 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:29:33,266 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:29:33,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:29:33,267 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:29:33,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:29:33,283 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:29:33,283 INFO ]: Advancing trace checker [2018-06-24 21:29:33,283 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 [2018-06-24 21:29:33,303 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:29:33,356 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:29:33,359 INFO ]: Computing forward predicates... [2018-06-24 21:29:33,501 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:29:33,520 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:29:33,520 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:29:33,521 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:29:33,521 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:29:33,521 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:29:33,522 INFO ]: Start difference. First operand 15 states and 25 transitions. Second operand 3 states. [2018-06-24 21:29:33,579 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:29:33,579 INFO ]: Finished difference Result 18 states and 30 transitions. [2018-06-24 21:29:33,579 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:29:33,579 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:29:33,579 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:29:33,580 INFO ]: With dead ends: 18 [2018-06-24 21:29:33,580 INFO ]: Without dead ends: 18 [2018-06-24 21:29:33,581 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 [2018-06-24 21:29:33,581 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-24 21:29:33,585 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-06-24 21:29:33,585 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-24 21:29:33,586 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 26 transitions. [2018-06-24 21:29:33,586 INFO ]: Start accepts. Automaton has 16 states and 26 transitions. Word has length 5 [2018-06-24 21:29:33,586 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:29:33,586 INFO ]: Abstraction has 16 states and 26 transitions. [2018-06-24 21:29:33,586 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:29:33,586 INFO ]: Start isEmpty. Operand 16 states and 26 transitions. [2018-06-24 21:29:33,587 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 21:29:33,587 INFO ]: Found error trace [2018-06-24 21:29:33,587 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:29:33,587 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:29:33,587 INFO ]: Analyzing trace with hash -213272216, now seen corresponding path program 1 times [2018-06-24 21:29:33,588 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:29:33,588 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:29:33,588 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:29:33,588 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:29:33,588 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:29:33,597 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-24 21:29:33,597 INFO ]: Advancing trace checker [2018-06-24 21:29:33,597 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) [2018-06-24 21:29:33,608 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-24 21:29:33,693 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:29:33,697 INFO ]: Computing forward predicates... [2018-06-24 21:29:33,818 INFO ]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:29:33,851 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:29:33,851 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-06-24 21:29:33,851 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:29:33,851 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:29:33,851 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:29:33,851 INFO ]: Start difference. First operand 16 states and 26 transitions. Second operand 4 states. [2018-06-24 21:29:34,133 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:29:34,133 INFO ]: Finished difference Result 13 states and 20 transitions. [2018-06-24 21:29:34,134 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:29:34,134 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-24 21:29:34,134 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:29:34,134 INFO ]: With dead ends: 13 [2018-06-24 21:29:34,134 INFO ]: Without dead ends: 0 [2018-06-24 21:29:34,134 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:29:34,134 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:29:34,134 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:29:34,134 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:29:34,134 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:29:34,135 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-06-24 21:29:34,135 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:29:34,135 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:29:34,135 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:29:34,135 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:29:34,135 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:29:34,137 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:29:34,139 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:29:34 BasicIcfg [2018-06-24 21:29:34,139 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:29:34,140 INFO ]: Toolchain (without parser) took 2811.20 ms. Allocated memory was 309.9 MB in the beginning and 327.2 MB in the end (delta: 17.3 MB). Free memory was 217.3 MB in the beginning and 199.4 MB in the end (delta: 17.9 MB). Peak memory consumption was 35.2 MB. Max. memory is 3.6 GB. [2018-06-24 21:29:34,142 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:29:34,142 INFO ]: ChcToBoogie took 81.04 ms. Allocated memory is still 309.9 MB. Free memory was 216.3 MB in the beginning and 214.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:29:34,142 INFO ]: Boogie Preprocessor took 38.82 ms. Allocated memory is still 309.9 MB. Free memory was 214.3 MB in the beginning and 212.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:29:34,143 INFO ]: RCFGBuilder took 582.73 ms. Allocated memory is still 309.9 MB. Free memory was 212.4 MB in the beginning and 192.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:29:34,143 INFO ]: BlockEncodingV2 took 506.26 ms. Allocated memory was 309.9 MB in the beginning and 327.2 MB in the end (delta: 17.3 MB). Free memory was 192.2 MB in the beginning and 271.3 MB in the end (delta: -79.1 MB). Peak memory consumption was 8.5 MB. Max. memory is 3.6 GB. [2018-06-24 21:29:34,144 INFO ]: TraceAbstraction took 1593.42 ms. Allocated memory is still 327.2 MB. Free memory was 271.3 MB in the beginning and 199.4 MB in the end (delta: 71.9 MB). Peak memory consumption was 71.9 MB. Max. memory is 3.6 GB. [2018-06-24 21:29:34,146 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 23 locations, 32 edges - StatisticsResult: Encoded RCFG 12 locations, 20 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 81.04 ms. Allocated memory is still 309.9 MB. Free memory was 216.3 MB in the beginning and 214.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.82 ms. Allocated memory is still 309.9 MB. Free memory was 214.3 MB in the beginning and 212.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 582.73 ms. Allocated memory is still 309.9 MB. Free memory was 212.4 MB in the beginning and 192.4 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 506.26 ms. Allocated memory was 309.9 MB in the beginning and 327.2 MB in the end (delta: 17.3 MB). Free memory was 192.2 MB in the beginning and 271.3 MB in the end (delta: -79.1 MB). Peak memory consumption was 8.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1593.42 ms. Allocated memory is still 327.2 MB. Free memory was 271.3 MB in the beginning and 199.4 MB in the end (delta: 71.9 MB). Peak memory consumption was 71.9 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, 12 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 7 SDslu, 31 SDs, 0 SdLazy, 30 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 284 SizeOfPredicates, 10 NumberOfNonLiveVariables, 864 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 4/5 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/toChurch05.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-29-34-156.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/toChurch05.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-29-34-156.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/toChurch05.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-29-34-156.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/toChurch05.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-29-34-156.csv Received shutdown request...