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/PRODUCER_CONSUMMER_luke_2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 16:29:28,369 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 16:29:28,371 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 16:29:28,390 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 16:29:28,391 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 16:29:28,392 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 16:29:28,394 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 16:29:28,396 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 16:29:28,399 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 16:29:28,400 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 16:29:28,403 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 16:29:28,403 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 16:29:28,404 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 16:29:28,406 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 16:29:28,408 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 16:29:28,409 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 16:29:28,411 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 16:29:28,425 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 16:29:28,427 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 16:29:28,428 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 16:29:28,429 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 16:29:28,431 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 16:29:28,432 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 16:29:28,432 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 16:29:28,436 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 16:29:28,437 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 16:29:28,438 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 16:29:28,439 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 16:29:28,444 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 16:29:28,444 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 16:29:28,445 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 16:29:28,446 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 16:29:28,446 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 16:29:28,451 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 16:29:28,452 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 16:29:28,452 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 16:29:28,473 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 16:29:28,473 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 16:29:28,473 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 16:29:28,473 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 16:29:28,476 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 16:29:28,477 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 16:29:28,477 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 16:29:28,477 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 16:29:28,477 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 16:29:28,477 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 16:29:28,478 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 16:29:28,478 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 16:29:28,478 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 16:29:28,478 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 16:29:28,478 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 16:29:28,478 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 16:29:28,481 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 16:29:28,483 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 16:29:28,483 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 16:29:28,537 INFO ]: Repository-Root is: /tmp [2018-06-18 16:29:28,557 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 16:29:28,561 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 16:29:28,562 INFO ]: Initializing SmtParser... [2018-06-18 16:29:28,563 INFO ]: SmtParser initialized [2018-06-18 16:29:28,563 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_2.smt2 [2018-06-18 16:29:28,565 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 16:29:28,659 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_2.smt2 unknown [2018-06-18 16:29:29,060 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMMER_luke_2.smt2 [2018-06-18 16:29:29,066 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 16:29:29,072 INFO ]: Walking toolchain with 4 elements. [2018-06-18 16:29:29,073 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 16:29:29,073 INFO ]: Initializing ChcToBoogie... [2018-06-18 16:29:29,073 INFO ]: ChcToBoogie initialized [2018-06-18 16:29:29,080 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:29:29" (1/1) ... [2018-06-18 16:29:29,155 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:29:29 Unit [2018-06-18 16:29:29,155 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 16:29:29,156 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 16:29:29,156 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 16:29:29,156 INFO ]: Boogie Preprocessor initialized [2018-06-18 16:29:29,173 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:29:29" (1/1) ... [2018-06-18 16:29:29,173 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:29:29" (1/1) ... [2018-06-18 16:29:29,182 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:29:29" (1/1) ... [2018-06-18 16:29:29,182 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:29:29" (1/1) ... [2018-06-18 16:29:29,189 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:29:29" (1/1) ... [2018-06-18 16:29:29,190 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:29:29" (1/1) ... [2018-06-18 16:29:29,192 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:29:29" (1/1) ... [2018-06-18 16:29:29,195 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 16:29:29,195 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 16:29:29,195 INFO ]: Initializing RCFGBuilder... [2018-06-18 16:29:29,195 INFO ]: RCFGBuilder initialized [2018-06-18 16:29:29,196 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:29:29" (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 16:29:29,209 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 16:29:29,209 INFO ]: Found specification of procedure False [2018-06-18 16:29:29,209 INFO ]: Found implementation of procedure False [2018-06-18 16:29:29,209 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 16:29:29,209 INFO ]: Found specification of procedure state [2018-06-18 16:29:29,209 INFO ]: Found implementation of procedure state [2018-06-18 16:29:29,209 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 16:29:29,209 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 16:29:29,209 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 16:29:29,609 INFO ]: Using library mode [2018-06-18 16:29:29,610 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:29:29 BoogieIcfgContainer [2018-06-18 16:29:29,610 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 16:29:29,612 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 16:29:29,612 INFO ]: Initializing TraceAbstraction... [2018-06-18 16:29:29,620 INFO ]: TraceAbstraction initialized [2018-06-18 16:29:29,620 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:29:29" (1/3) ... [2018-06-18 16:29:29,621 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5891a3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 04:29:29, skipping insertion in model container [2018-06-18 16:29:29,621 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:29:29" (2/3) ... [2018-06-18 16:29:29,621 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5891a3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 04:29:29, skipping insertion in model container [2018-06-18 16:29:29,621 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:29:29" (3/3) ... [2018-06-18 16:29:29,623 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 16:29:29,630 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 16:29:29,638 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 16:29:29,681 INFO ]: Using default assertion order modulation [2018-06-18 16:29:29,682 INFO ]: Interprodecural is true [2018-06-18 16:29:29,682 INFO ]: Hoare is false [2018-06-18 16:29:29,682 INFO ]: Compute interpolants for FPandBP [2018-06-18 16:29:29,682 INFO ]: Backedges is TWOTRACK [2018-06-18 16:29:29,682 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 16:29:29,682 INFO ]: Difference is false [2018-06-18 16:29:29,682 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 16:29:29,682 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 16:29:29,696 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 16:29:29,707 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 16:29:29,707 INFO ]: Found error trace [2018-06-18 16:29:29,708 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:29:29,708 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:29:29,712 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 16:29:29,713 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:29:29,714 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:29:29,755 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:29:29,755 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:29:29,755 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:29:29,842 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:29:29,853 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:29:30,030 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 16:29:30,032 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 16:29:30,032 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 16:29:30,033 INFO ]: Interpolant automaton has 4 states [2018-06-18 16:29:30,044 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 16:29:30,045 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 16:29:30,047 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 16:29:30,150 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:29:30,150 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 16:29:30,151 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 16:29:30,152 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 16:29:30,152 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:29:30,162 INFO ]: With dead ends: 13 [2018-06-18 16:29:30,162 INFO ]: Without dead ends: 13 [2018-06-18 16:29:30,164 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 16:29:30,184 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 16:29:30,209 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 16:29:30,210 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 16:29:30,211 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 16:29:30,212 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 16:29:30,212 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:29:30,213 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 16:29:30,213 INFO ]: Interpolant automaton has 4 states. [2018-06-18 16:29:30,213 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 16:29:30,214 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 16:29:30,214 INFO ]: Found error trace [2018-06-18 16:29:30,214 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:29:30,214 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:29:30,215 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 16:29:30,215 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:29:30,215 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:29:30,216 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:29:30,216 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:29:30,216 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:29:30,280 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:29:30,281 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:29:31,544 WARN ]: Spent 1.04 s on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2018-06-18 16:29:31,790 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:29:31,790 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:29:31,790 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 16:29:31,808 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:29:31,906 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:29:31,919 INFO ]: Computing forward predicates... [2018-06-18 16:29:32,123 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:29:32,149 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:29:32,162 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:29:33,361 WARN ]: Spent 382.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-06-18 16:29:33,443 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:29:33,467 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:29:33,467 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 16:29:33,467 INFO ]: Interpolant automaton has 8 states [2018-06-18 16:29:33,467 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 16:29:33,468 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-18 16:29:33,468 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 16:29:33,705 WARN ]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2018-06-18 16:29:33,792 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:29:33,792 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 16:29:33,793 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 16:29:33,793 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 16:29:33,793 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:29:33,793 INFO ]: With dead ends: 15 [2018-06-18 16:29:33,793 INFO ]: Without dead ends: 15 [2018-06-18 16:29:33,794 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-18 16:29:33,794 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 16:29:33,797 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 16:29:33,797 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 16:29:33,798 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 16:29:33,798 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 16:29:33,798 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:29:33,798 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 16:29:33,798 INFO ]: Interpolant automaton has 8 states. [2018-06-18 16:29:33,798 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 16:29:33,799 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 16:29:33,799 INFO ]: Found error trace [2018-06-18 16:29:33,799 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:29:33,799 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:29:33,799 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 16:29:33,799 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:29:33,799 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:29:33,800 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:29:33,800 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:29:33,800 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:29:33,898 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:29:33,898 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:29:34,496 WARN ]: Spent 347.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2018-06-18 16:29:34,614 WARN ]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2018-06-18 16:29:34,677 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:29:34,678 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:29:34,678 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 16:29:34,693 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 16:29:34,772 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 16:29:34,772 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:29:34,780 INFO ]: Computing forward predicates... [2018-06-18 16:29:34,823 WARN ]: expecting exponential blowup for input size 15 [2018-06-18 16:29:35,977 WARN ]: Simplifying disjunction of 69984 conjuctions. This might take some time... Received shutdown request... [2018-06-18 16:30:48,372 INFO ]: Timeout while computing interpolants [2018-06-18 16:30:48,572 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 16:30:48,573 WARN ]: Verification canceled [2018-06-18 16:30:48,576 WARN ]: Timeout [2018-06-18 16:30:48,576 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 04:30:48 BoogieIcfgContainer [2018-06-18 16:30:48,576 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 16:30:48,577 INFO ]: Toolchain (without parser) took 79511.15 ms. Allocated memory was 303.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 251.4 MB in the beginning and 805.7 MB in the end (delta: -554.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-18 16:30:48,578 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 303.0 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 16:30:48,579 INFO ]: ChcToBoogie took 82.62 ms. Allocated memory is still 303.0 MB. Free memory was 251.4 MB in the beginning and 247.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:30:48,579 INFO ]: Boogie Preprocessor took 38.53 ms. Allocated memory is still 303.0 MB. Free memory is still 247.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 16:30:48,579 INFO ]: RCFGBuilder took 414.95 ms. Allocated memory is still 303.0 MB. Free memory was 247.4 MB in the beginning and 231.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:30:48,580 INFO ]: TraceAbstraction took 78964.73 ms. Allocated memory was 303.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 231.4 MB in the beginning and 805.7 MB in the end (delta: -574.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-18 16:30:48,588 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 303.0 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 82.62 ms. Allocated memory is still 303.0 MB. Free memory was 251.4 MB in the beginning and 247.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.53 ms. Allocated memory is still 303.0 MB. Free memory is still 247.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 414.95 ms. Allocated memory is still 303.0 MB. Free memory was 247.4 MB in the beginning and 231.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 78964.73 ms. Allocated memory was 303.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 231.4 MB in the beginning and 805.7 MB in the end (delta: -574.2 MB). Peak memory consumption was 1.3 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 69984 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 78.9s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 8 SDslu, 45 SDs, 0 SdLazy, 28 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.0s 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, 0.1s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2064 SizeOfPredicates, 36 NumberOfNonLiveVariables, 295 ConjunctsInSsa, 44 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/PRODUCER_CONSUMMER_luke_2.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_16-30-48-606.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMMER_luke_2.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_16-30-48-606.csv Completed graceful shutdown