java -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/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 16:38:33,036 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 16:38:33,038 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 16:38:33,053 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 16:38:33,053 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 16:38:33,054 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 16:38:33,056 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 16:38:33,058 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 16:38:33,060 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 16:38:33,062 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 16:38:33,063 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 16:38:33,063 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 16:38:33,064 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 16:38:33,068 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 16:38:33,068 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 16:38:33,069 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 16:38:33,071 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 16:38:33,085 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 16:38:33,086 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 16:38:33,087 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 16:38:33,088 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 16:38:33,091 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 16:38:33,091 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 16:38:33,091 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 16:38:33,092 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 16:38:33,097 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 16:38:33,098 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 16:38:33,099 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 16:38:33,100 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 16:38:33,100 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 16:38:33,100 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 16:38:33,106 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 16:38:33,106 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 16:38:33,107 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 16:38:33,108 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 16:38:33,108 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 16:38:33,129 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 16:38:33,129 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 16:38:33,130 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 16:38:33,130 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 16:38:33,131 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 16:38:33,131 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 16:38:33,132 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 16:38:33,132 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 16:38:33,132 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 16:38:33,132 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 16:38:33,132 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 16:38:33,132 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 16:38:33,134 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 16:38:33,134 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 16:38:33,134 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 16:38:33,134 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 16:38:33,134 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 16:38:33,136 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 16:38:33,136 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 16:38:33,187 INFO ]: Repository-Root is: /tmp [2018-06-18 16:38:33,201 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 16:38:33,205 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 16:38:33,207 INFO ]: Initializing SmtParser... [2018-06-18 16:38:33,207 INFO ]: SmtParser initialized [2018-06-18 16:38:33,208 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_4.smt2 [2018-06-18 16:38:33,209 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 [2018-06-18 16:38:33,293 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_4.smt2 unknown [2018-06-18 16:38:33,862 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/swimmingpool_4.smt2 [2018-06-18 16:38:33,867 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 16:38:33,872 INFO ]: Walking toolchain with 4 elements. [2018-06-18 16:38:33,872 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 16:38:33,872 INFO ]: Initializing ChcToBoogie... [2018-06-18 16:38:33,872 INFO ]: ChcToBoogie initialized [2018-06-18 16:38:33,879 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:38:33" (1/1) ... [2018-06-18 16:38:33,982 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:38:33 Unit [2018-06-18 16:38:33,982 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 16:38:33,983 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 16:38:33,983 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 16:38:33,983 INFO ]: Boogie Preprocessor initialized [2018-06-18 16:38:34,011 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:38:33" (1/1) ... [2018-06-18 16:38:34,011 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:38:33" (1/1) ... [2018-06-18 16:38:34,026 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:38:33" (1/1) ... [2018-06-18 16:38:34,026 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:38:33" (1/1) ... [2018-06-18 16:38:34,035 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:38:33" (1/1) ... [2018-06-18 16:38:34,036 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:38:33" (1/1) ... [2018-06-18 16:38:34,039 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:38:33" (1/1) ... [2018-06-18 16:38:34,045 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 16:38:34,045 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 16:38:34,045 INFO ]: Initializing RCFGBuilder... [2018-06-18 16:38:34,045 INFO ]: RCFGBuilder initialized [2018-06-18 16:38:34,046 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:38:33" (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) [2018-06-18 16:38:34,061 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 16:38:34,061 INFO ]: Found specification of procedure False [2018-06-18 16:38:34,061 INFO ]: Found implementation of procedure False [2018-06-18 16:38:34,061 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 16:38:34,061 INFO ]: Found specification of procedure state [2018-06-18 16:38:34,061 INFO ]: Found implementation of procedure state [2018-06-18 16:38:34,061 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 16:38:34,061 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 16:38:34,061 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 [2018-06-18 16:38:34,569 INFO ]: Using library mode [2018-06-18 16:38:34,570 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:38:34 BoogieIcfgContainer [2018-06-18 16:38:34,570 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 16:38:34,571 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 16:38:34,571 INFO ]: Initializing TraceAbstraction... [2018-06-18 16:38:34,577 INFO ]: TraceAbstraction initialized [2018-06-18 16:38:34,577 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:38:33" (1/3) ... [2018-06-18 16:38:34,578 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1022c675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 04:38:34, skipping insertion in model container [2018-06-18 16:38:34,578 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:38:33" (2/3) ... [2018-06-18 16:38:34,578 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1022c675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 04:38:34, skipping insertion in model container [2018-06-18 16:38:34,578 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:38:34" (3/3) ... [2018-06-18 16:38:34,580 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 16:38:34,591 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 16:38:34,602 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 16:38:34,649 INFO ]: Using default assertion order modulation [2018-06-18 16:38:34,649 INFO ]: Interprodecural is true [2018-06-18 16:38:34,649 INFO ]: Hoare is false [2018-06-18 16:38:34,649 INFO ]: Compute interpolants for FPandBP [2018-06-18 16:38:34,649 INFO ]: Backedges is TWOTRACK [2018-06-18 16:38:34,649 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 16:38:34,649 INFO ]: Difference is false [2018-06-18 16:38:34,649 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 16:38:34,649 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 16:38:34,663 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 16:38:34,677 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 16:38:34,677 INFO ]: Found error trace [2018-06-18 16:38:34,678 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:38:34,678 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:38:34,685 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-18 16:38:34,688 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:38:34,688 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:38:34,730 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:38:34,730 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:38:34,730 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:38:34,858 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:38:34,869 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:38:35,232 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 16:38:35,235 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 16:38:35,235 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 16:38:35,237 INFO ]: Interpolant automaton has 4 states [2018-06-18 16:38:35,253 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 16:38:35,253 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 16:38:35,256 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 16:38:35,397 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:38:35,397 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 16:38:35,398 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 16:38:35,400 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 16:38:35,400 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:38:35,414 INFO ]: With dead ends: 13 [2018-06-18 16:38:35,415 INFO ]: Without dead ends: 13 [2018-06-18 16:38:35,418 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 16:38:35,435 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 16:38:35,474 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 16:38:35,475 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 16:38:35,475 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 16:38:35,476 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 16:38:35,476 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:38:35,476 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 16:38:35,476 INFO ]: Interpolant automaton has 4 states. [2018-06-18 16:38:35,476 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 16:38:35,478 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 16:38:35,478 INFO ]: Found error trace [2018-06-18 16:38:35,478 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:38:35,478 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:38:35,478 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-18 16:38:35,478 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:38:35,479 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:38:35,479 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:38:35,479 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:38:35,479 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:38:35,595 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:38:35,596 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:38:37,025 WARN ]: Spent 1.17 s on a formula simplification. DAG size of input: 60 DAG size of output: 28 [2018-06-18 16:38:37,180 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 1 [2018-06-18 16:38:37,182 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:38:37,182 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:38:37,182 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 [2018-06-18 16:38:37,193 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:38:37,373 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:38:37,385 INFO ]: Computing forward predicates... [2018-06-18 16:38:37,694 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 16:38:39,016 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:38:39,052 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:38:39,052 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 16:38:39,053 INFO ]: Interpolant automaton has 8 states [2018-06-18 16:38:39,053 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 16:38:39,053 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-18 16:38:39,053 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 16:38:39,424 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:38:39,424 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 16:38:39,425 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 16:38:39,425 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 16:38:39,425 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:38:39,425 INFO ]: With dead ends: 15 [2018-06-18 16:38:39,425 INFO ]: Without dead ends: 15 [2018-06-18 16:38:39,426 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-06-18 16:38:39,426 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 16:38:39,429 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 16:38:39,429 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 16:38:39,430 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 16:38:39,430 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 16:38:39,430 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:38:39,430 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 16:38:39,430 INFO ]: Interpolant automaton has 8 states. [2018-06-18 16:38:39,430 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 16:38:39,431 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 16:38:39,431 INFO ]: Found error trace [2018-06-18 16:38:39,431 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:38:39,431 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:38:39,431 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-18 16:38:39,431 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:38:39,431 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:38:39,432 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:38:39,432 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:38:39,432 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:38:39,580 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:38:39,581 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:38:40,025 WARN ]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2018-06-18 16:38:40,134 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:38:40,134 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:38:40,134 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 [2018-06-18 16:38:40,143 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 16:38:40,321 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 16:38:40,321 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:38:40,330 INFO ]: Computing forward predicates... [2018-06-18 16:38:40,558 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:38:40,570 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:38:40,593 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:38:40,603 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:38:40,605 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:38:40,613 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 16:38:40,667 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-18 16:38:43,487 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-18 16:38:43,527 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 16:38:43,608 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-18 16:38:46,067 INFO ]: Simplified to disjunction of 5184 conjuctions. [2018-06-18 16:39:05,431 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,432 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,433 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,435 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,436 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,439 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,441 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,442 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,445 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,482 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,523 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,529 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:39:05,552 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,553 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:39:05,566 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,569 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,570 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,572 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,578 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,579 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,581 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,582 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,964 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,979 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,981 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,983 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,984 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:05,987 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,023 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,025 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,027 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,028 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,057 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,058 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:39:06,064 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,066 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,069 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,070 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,079 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,080 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:39:06,097 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,098 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,100 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:06,103 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:09,784 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:39:09,785 WARN ]: expecting exponential blowup for input size 16 [2018-06-18 16:39:22,950 WARN ]: Simplifying disjunction of 1026432 conjuctions. This might take some time... Received shutdown request... [2018-06-18 16:39:29,984 INFO ]: Timeout while computing interpolants [2018-06-18 16:39:30,184 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 16:39:30,185 WARN ]: Verification canceled [2018-06-18 16:39:30,190 WARN ]: Timeout [2018-06-18 16:39:30,190 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 04:39:30 BoogieIcfgContainer [2018-06-18 16:39:30,190 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 16:39:30,191 INFO ]: Toolchain (without parser) took 56323.51 ms. Allocated memory was 308.8 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 241.2 MB in the beginning and 456.8 MB in the end (delta: -215.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 3.6 GB. [2018-06-18 16:39:30,192 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 16:39:30,192 INFO ]: ChcToBoogie took 110.50 ms. Allocated memory is still 308.8 MB. Free memory was 240.2 MB in the beginning and 236.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:39:30,193 INFO ]: Boogie Preprocessor took 61.54 ms. Allocated memory is still 308.8 MB. Free memory was 236.2 MB in the beginning and 234.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:39:30,193 INFO ]: RCFGBuilder took 524.86 ms. Allocated memory is still 308.8 MB. Free memory was 234.2 MB in the beginning and 202.2 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:39:30,194 INFO ]: TraceAbstraction took 55618.53 ms. Allocated memory was 308.8 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 202.2 MB in the beginning and 456.8 MB in the end (delta: -254.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 3.6 GB. [2018-06-18 16:39:30,196 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 110.50 ms. Allocated memory is still 308.8 MB. Free memory was 240.2 MB in the beginning and 236.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 61.54 ms. Allocated memory is still 308.8 MB. Free memory was 236.2 MB in the beginning and 234.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 524.86 ms. Allocated memory is still 308.8 MB. Free memory was 234.2 MB in the beginning and 202.2 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 55618.53 ms. Allocated memory was 308.8 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 202.2 MB in the beginning and 456.8 MB in the end (delta: -254.6 MB). Peak memory consumption was 2.1 GB. 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 18 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 1026432 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 55.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 47 SDs, 0 SdLazy, 33 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1236 SizeOfPredicates, 21 NumberOfNonLiveVariables, 674 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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_4.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_16-39-30-215.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/swimmingpool_4.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_16-39-30-215.csv Completed graceful shutdown