java -Xss4m -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_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_5.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 17:19:02,174 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 17:19:02,176 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 17:19:02,193 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 17:19:02,193 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 17:19:02,194 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 17:19:02,204 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 17:19:02,207 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 17:19:02,208 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 17:19:02,209 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 17:19:02,210 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 17:19:02,211 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 17:19:02,223 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 17:19:02,224 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 17:19:02,225 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 17:19:02,233 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 17:19:02,244 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 17:19:02,247 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 17:19:02,248 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 17:19:02,259 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 17:19:02,260 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 17:19:02,270 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 17:19:02,270 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 17:19:02,271 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 17:19:02,272 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 17:19:02,281 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 17:19:02,282 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 17:19:02,283 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 17:19:02,284 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 17:19:02,284 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 17:19:02,289 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 17:19:02,290 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 17:19:02,291 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 17:19:02,291 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 17:19:02,292 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 17:19:02,292 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 17:19:02,330 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 17:19:02,330 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 17:19:02,331 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 17:19:02,331 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 17:19:02,333 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 17:19:02,333 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 17:19:02,333 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 17:19:02,333 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 17:19:02,334 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 17:19:02,334 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 17:19:02,334 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 17:19:02,334 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 17:19:02,334 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 17:19:02,335 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 17:19:02,335 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 17:19:02,335 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 17:19:02,335 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 17:19:02,335 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 17:19:02,336 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 17:19:02,337 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 17:19:02,337 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 17:19:02,338 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 17:19:02,339 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 17:19:02,393 INFO ]: Repository-Root is: /tmp [2018-06-25 17:19:02,424 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 17:19:02,430 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 17:19:02,431 INFO ]: Initializing SmtParser... [2018-06-25 17:19:02,432 INFO ]: SmtParser initialized [2018-06-25 17:19:02,432 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_5.smt2 [2018-06-25 17:19:02,434 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 [2018-06-25 17:19:02,535 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_5.smt2 unknown [2018-06-25 17:19:03,186 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_5.smt2 [2018-06-25 17:19:03,192 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 17:19:03,209 INFO ]: Walking toolchain with 4 elements. [2018-06-25 17:19:03,210 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 17:19:03,210 INFO ]: Initializing ChcToBoogie... [2018-06-25 17:19:03,210 INFO ]: ChcToBoogie initialized [2018-06-25 17:19:03,214 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 05:19:03" (1/1) ... [2018-06-25 17:19:03,359 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:19:03 Unit [2018-06-25 17:19:03,359 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 17:19:03,360 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 17:19:03,360 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 17:19:03,360 INFO ]: Boogie Preprocessor initialized [2018-06-25 17:19:03,391 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:19:03" (1/1) ... [2018-06-25 17:19:03,392 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:19:03" (1/1) ... [2018-06-25 17:19:03,415 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:19:03" (1/1) ... [2018-06-25 17:19:03,415 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:19:03" (1/1) ... [2018-06-25 17:19:03,430 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:19:03" (1/1) ... [2018-06-25 17:19:03,432 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:19:03" (1/1) ... [2018-06-25 17:19:03,440 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:19:03" (1/1) ... [2018-06-25 17:19:03,444 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 17:19:03,445 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 17:19:03,445 INFO ]: Initializing RCFGBuilder... [2018-06-25 17:19:03,445 INFO ]: RCFGBuilder initialized [2018-06-25 17:19:03,448 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:19:03" (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 [2018-06-25 17:19:03,481 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 17:19:03,481 INFO ]: Found specification of procedure gotoProc [2018-06-25 17:19:03,481 INFO ]: Found implementation of procedure gotoProc [2018-06-25 17:19:03,481 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 17:19:03,481 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 17:19:03,481 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 17:19:04,050 INFO ]: Using library mode [2018-06-25 17:19:04,050 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 05:19:04 BoogieIcfgContainer [2018-06-25 17:19:04,050 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 17:19:04,052 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 17:19:04,052 INFO ]: Initializing TraceAbstraction... [2018-06-25 17:19:04,057 INFO ]: TraceAbstraction initialized [2018-06-25 17:19:04,057 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 05:19:03" (1/3) ... [2018-06-25 17:19:04,058 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf1ff1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 05:19:04, skipping insertion in model container [2018-06-25 17:19:04,058 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:19:03" (2/3) ... [2018-06-25 17:19:04,058 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf1ff1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 05:19:04, skipping insertion in model container [2018-06-25 17:19:04,058 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 05:19:04" (3/3) ... [2018-06-25 17:19:04,060 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 17:19:04,071 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 17:19:04,082 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 17:19:04,139 INFO ]: Using default assertion order modulation [2018-06-25 17:19:04,140 INFO ]: Interprodecural is true [2018-06-25 17:19:04,140 INFO ]: Hoare is false [2018-06-25 17:19:04,140 INFO ]: Compute interpolants for FPandBP [2018-06-25 17:19:04,140 INFO ]: Backedges is TWOTRACK [2018-06-25 17:19:04,140 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 17:19:04,140 INFO ]: Difference is false [2018-06-25 17:19:04,140 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 17:19:04,141 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 17:19:04,155 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 17:19:04,176 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 17:19:04,176 INFO ]: Found error trace [2018-06-25 17:19:04,178 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:19:04,178 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:19:04,190 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 17:19:04,198 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:19:04,199 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:19:04,276 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:19:04,277 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:19:04,278 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:19:04,439 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:19:04,630 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:19:04,633 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 17:19:04,633 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 17:19:04,636 INFO ]: Interpolant automaton has 3 states [2018-06-25 17:19:04,653 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 17:19:04,654 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 17:19:04,657 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 17:19:04,750 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 17:19:04,750 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 17:19:04,751 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 17:19:04,753 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 17:19:04,753 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 17:19:04,771 INFO ]: With dead ends: 9 [2018-06-25 17:19:04,771 INFO ]: Without dead ends: 9 [2018-06-25 17:19:04,774 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 [2018-06-25 17:19:04,795 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 17:19:04,831 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 17:19:04,833 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 17:19:04,833 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 17:19:04,835 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 17:19:04,836 INFO ]: Finished accepts. word is rejected. [2018-06-25 17:19:04,836 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 17:19:04,836 INFO ]: Interpolant automaton has 3 states. [2018-06-25 17:19:04,836 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 17:19:04,836 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 17:19:04,836 INFO ]: Found error trace [2018-06-25 17:19:04,836 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:19:04,836 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:19:04,836 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 17:19:04,836 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:19:04,836 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:19:04,837 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:19:04,837 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:19:04,837 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:19:04,990 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:19:05,346 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:19:05,347 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 17:19:05,347 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 [2018-06-25 17:19:05,374 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:19:05,649 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:19:05,664 INFO ]: Computing forward predicates... [2018-06-25 17:19:06,585 WARN ]: Spent 224.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 6 [2018-06-25 17:19:06,603 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:19:06,667 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 17:19:06,667 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-25 17:19:06,668 INFO ]: Interpolant automaton has 6 states [2018-06-25 17:19:06,668 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 17:19:06,668 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-25 17:19:06,669 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-25 17:19:06,880 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 17:19:06,880 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 17:19:06,881 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 17:19:06,881 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-25 17:19:06,881 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 17:19:06,881 INFO ]: With dead ends: 11 [2018-06-25 17:19:06,881 INFO ]: Without dead ends: 11 [2018-06-25 17:19:06,882 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-25 17:19:06,882 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 17:19:06,883 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 17:19:06,883 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 17:19:06,884 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 17:19:06,884 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-25 17:19:06,884 INFO ]: Finished accepts. word is rejected. [2018-06-25 17:19:06,884 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 17:19:06,884 INFO ]: Interpolant automaton has 6 states. [2018-06-25 17:19:06,884 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 17:19:06,884 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 17:19:06,884 INFO ]: Found error trace [2018-06-25 17:19:06,884 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:19:06,885 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:19:06,885 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-25 17:19:06,885 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:19:06,885 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:19:06,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:19:06,886 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:19:06,886 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:19:07,102 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:19:07,624 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 11 [2018-06-25 17:19:08,555 WARN ]: Spent 837.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2018-06-25 17:19:08,624 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:19:08,624 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 17:19:08,624 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 17:19:08,643 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 17:19:08,987 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 17:19:08,987 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:19:09,005 INFO ]: Computing forward predicates... [2018-06-25 17:19:09,365 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:19:09,387 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:19:09,390 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:19:09,393 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:19:09,396 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:19:09,399 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:19:09,402 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:19:09,405 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:19:09,407 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:19:09,411 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:19:09,431 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 17:19:09,485 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:19:09,517 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 17:19:09,651 WARN ]: Simplifying disjunction of 5832 conjuctions. This might take some time... [2018-06-25 17:19:14,658 INFO ]: Simplified to disjunction of 3888 conjuctions. [2018-06-25 17:19:14,682 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 17:19:14,709 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 17:19:14,737 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 17:19:14,757 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 17:19:14,799 WARN ]: Simplifying disjunction of 5832 conjuctions. This might take some time... [2018-06-25 17:19:20,271 INFO ]: Simplified to disjunction of 3888 conjuctions. [2018-06-25 17:19:20,294 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 17:19:20,319 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 17:19:20,353 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 17:20:15,375 WARN ]: Spent 1.48 s on a formula simplification. DAG size of input: 94 DAG size of output: 33 [2018-06-25 17:20:15,415 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 17:20:15,872 WARN ]: Simplifying disjunction of 15552 conjuctions. This might take some time... Received shutdown request... [2018-06-25 17:20:23,511 INFO ]: Timeout while computing interpolants [2018-06-25 17:20:23,712 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 17:20:23,712 WARN ]: Verification canceled [2018-06-25 17:20:23,719 WARN ]: Timeout [2018-06-25 17:20:23,719 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 05:20:23 BoogieIcfgContainer [2018-06-25 17:20:23,719 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 17:20:23,720 INFO ]: Toolchain (without parser) took 80527.90 ms. Allocated memory was 310.4 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 243.9 MB in the beginning and 351.5 MB in the end (delta: -107.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-25 17:20:23,730 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 310.4 MB. Free memory is still 276.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 17:20:23,730 INFO ]: ChcToBoogie took 150.07 ms. Allocated memory is still 310.4 MB. Free memory was 243.9 MB in the beginning and 241.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 17:20:23,730 INFO ]: Boogie Preprocessor took 84.13 ms. Allocated memory is still 310.4 MB. Free memory was 241.0 MB in the beginning and 238.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 17:20:23,731 INFO ]: RCFGBuilder took 605.48 ms. Allocated memory is still 310.4 MB. Free memory was 238.9 MB in the beginning and 196.8 MB in the end (delta: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 3.6 GB. [2018-06-25 17:20:23,731 INFO ]: TraceAbstraction took 79667.42 ms. Allocated memory was 310.4 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 196.8 MB in the beginning and 351.5 MB in the end (delta: -154.7 MB). Peak memory consumption was 995.9 MB. Max. memory is 3.6 GB. [2018-06-25 17:20:23,745 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 310.4 MB. Free memory is still 276.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 150.07 ms. Allocated memory is still 310.4 MB. Free memory was 243.9 MB in the beginning and 241.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 84.13 ms. Allocated memory is still 310.4 MB. Free memory was 241.0 MB in the beginning and 238.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 605.48 ms. Allocated memory is still 310.4 MB. Free memory was 238.9 MB in the beginning and 196.8 MB in the end (delta: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 79667.42 ms. Allocated memory was 310.4 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 196.8 MB in the beginning and 351.5 MB in the end (delta: -154.7 MB). Peak memory consumption was 995.9 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 11 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 15552 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 79.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 20 SDs, 0 SdLazy, 14 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 294 SizeOfPredicates, 2 NumberOfNonLiveVariables, 830 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/swimmingpool_5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_17-20-23-765.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/swimmingpool_5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_17-20-23-765.csv Completed graceful shutdown