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/ticket3i_4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 17:03:58,395 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 17:03:58,397 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 17:03:58,416 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 17:03:58,418 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 17:03:58,419 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 17:03:58,420 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 17:03:58,424 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 17:03:58,426 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 17:03:58,429 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 17:03:58,430 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 17:03:58,430 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 17:03:58,431 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 17:03:58,436 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 17:03:58,436 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 17:03:58,437 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 17:03:58,450 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 17:03:58,452 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 17:03:58,454 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 17:03:58,455 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 17:03:58,456 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 17:03:58,461 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 17:03:58,462 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 17:03:58,462 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 17:03:58,463 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 17:03:58,464 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 17:03:58,466 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 17:03:58,467 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 17:03:58,468 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 17:03:58,468 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 17:03:58,476 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 17:03:58,477 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 17:03:58,477 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 17:03:58,478 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 17:03:58,478 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 17:03:58,479 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 17:03:58,503 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 17:03:58,503 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 17:03:58,504 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 17:03:58,504 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 17:03:58,505 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 17:03:58,506 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 17:03:58,506 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 17:03:58,506 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 17:03:58,506 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 17:03:58,507 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 17:03:58,509 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 17:03:58,510 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 17:03:58,510 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 17:03:58,510 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 17:03:58,510 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 17:03:58,510 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 17:03:58,511 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 17:03:58,512 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 17:03:58,512 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 17:03:58,568 INFO ]: Repository-Root is: /tmp [2018-06-18 17:03:58,587 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 17:03:58,592 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 17:03:58,593 INFO ]: Initializing SmtParser... [2018-06-18 17:03:58,594 INFO ]: SmtParser initialized [2018-06-18 17:03:58,595 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_4.smt2 [2018-06-18 17:03:58,596 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 17:03:58,698 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_4.smt2 unknown [2018-06-18 17:03:59,229 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_4.smt2 [2018-06-18 17:03:59,233 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 17:03:59,244 INFO ]: Walking toolchain with 4 elements. [2018-06-18 17:03:59,244 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 17:03:59,244 INFO ]: Initializing ChcToBoogie... [2018-06-18 17:03:59,244 INFO ]: ChcToBoogie initialized [2018-06-18 17:03:59,260 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 05:03:59" (1/1) ... [2018-06-18 17:03:59,420 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 05:03:59 Unit [2018-06-18 17:03:59,420 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 17:03:59,421 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 17:03:59,421 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 17:03:59,421 INFO ]: Boogie Preprocessor initialized [2018-06-18 17:03:59,448 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 05:03:59" (1/1) ... [2018-06-18 17:03:59,448 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 05:03:59" (1/1) ... [2018-06-18 17:03:59,464 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 05:03:59" (1/1) ... [2018-06-18 17:03:59,464 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 05:03:59" (1/1) ... [2018-06-18 17:03:59,474 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 05:03:59" (1/1) ... [2018-06-18 17:03:59,475 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 05:03:59" (1/1) ... [2018-06-18 17:03:59,479 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 05:03:59" (1/1) ... [2018-06-18 17:03:59,484 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 17:03:59,485 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 17:03:59,485 INFO ]: Initializing RCFGBuilder... [2018-06-18 17:03:59,485 INFO ]: RCFGBuilder initialized [2018-06-18 17:03:59,486 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 05:03:59" (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 17:03:59,496 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 17:03:59,496 INFO ]: Found specification of procedure False [2018-06-18 17:03:59,496 INFO ]: Found implementation of procedure False [2018-06-18 17:03:59,496 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 17:03:59,496 INFO ]: Found specification of procedure state [2018-06-18 17:03:59,496 INFO ]: Found implementation of procedure state [2018-06-18 17:03:59,496 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 17:03:59,496 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 17:03:59,496 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 17:04:00,044 INFO ]: Using library mode [2018-06-18 17:04:00,044 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 05:04:00 BoogieIcfgContainer [2018-06-18 17:04:00,045 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 17:04:00,048 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 17:04:00,048 INFO ]: Initializing TraceAbstraction... [2018-06-18 17:04:00,053 INFO ]: TraceAbstraction initialized [2018-06-18 17:04:00,053 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 05:03:59" (1/3) ... [2018-06-18 17:04:00,054 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57153859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 05:04:00, skipping insertion in model container [2018-06-18 17:04:00,054 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 05:03:59" (2/3) ... [2018-06-18 17:04:00,054 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57153859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 05:04:00, skipping insertion in model container [2018-06-18 17:04:00,054 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 05:04:00" (3/3) ... [2018-06-18 17:04:00,057 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 17:04:00,067 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 17:04:00,078 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 17:04:00,127 INFO ]: Using default assertion order modulation [2018-06-18 17:04:00,127 INFO ]: Interprodecural is true [2018-06-18 17:04:00,127 INFO ]: Hoare is false [2018-06-18 17:04:00,127 INFO ]: Compute interpolants for FPandBP [2018-06-18 17:04:00,127 INFO ]: Backedges is TWOTRACK [2018-06-18 17:04:00,127 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 17:04:00,128 INFO ]: Difference is false [2018-06-18 17:04:00,128 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 17:04:00,128 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 17:04:00,145 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 17:04:00,161 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 17:04:00,161 INFO ]: Found error trace [2018-06-18 17:04:00,163 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 17:04:00,163 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 17:04:00,168 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 17:04:00,169 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 17:04:00,170 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 17:04:00,205 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 17:04:00,205 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 17:04:00,205 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 17:04:00,325 INFO ]: Conjunction of SSA is unsat [2018-06-18 17:04:00,335 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 17:04:00,760 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2018-06-18 17:04:00,763 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 17:04:00,766 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 17:04:00,766 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 17:04:00,768 INFO ]: Interpolant automaton has 4 states [2018-06-18 17:04:00,785 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 17:04:00,785 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 17:04:00,788 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 17:04:00,944 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 17:04:00,944 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 17:04:00,946 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 17:04:00,947 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 17:04:00,947 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 17:04:00,964 INFO ]: With dead ends: 13 [2018-06-18 17:04:00,965 INFO ]: Without dead ends: 13 [2018-06-18 17:04:00,966 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 17:04:00,985 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 17:04:01,025 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 17:04:01,027 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 17:04:01,027 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 17:04:01,028 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 17:04:01,028 INFO ]: Finished accepts. word is rejected. [2018-06-18 17:04:01,029 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 17:04:01,029 INFO ]: Interpolant automaton has 4 states. [2018-06-18 17:04:01,029 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 17:04:01,032 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 17:04:01,032 INFO ]: Found error trace [2018-06-18 17:04:01,032 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 17:04:01,032 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 17:04:01,032 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 17:04:01,032 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 17:04:01,032 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 17:04:01,033 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 17:04:01,033 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 17:04:01,033 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 17:04:01,187 INFO ]: Conjunction of SSA is unsat [2018-06-18 17:04:01,188 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 17:04:01,848 WARN ]: Spent 413.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2018-06-18 17:04:01,911 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 17:04:01,911 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 17:04:01,911 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 17:04:01,919 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 17:04:02,070 INFO ]: Conjunction of SSA is unsat [2018-06-18 17:04:02,082 INFO ]: Computing forward predicates... [2018-06-18 17:04:02,690 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 17:04:03,889 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 17:04:05,584 WARN ]: Spent 237.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 17 [2018-06-18 17:04:05,669 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 17:04:05,706 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 17:04:05,706 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 17:04:05,707 INFO ]: Interpolant automaton has 8 states [2018-06-18 17:04:05,707 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 17:04:05,707 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-18 17:04:05,707 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 17:04:06,113 WARN ]: Spent 187.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2018-06-18 17:04:06,192 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 17:04:06,192 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 17:04:06,193 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 17:04:06,193 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 17:04:06,193 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 17:04:06,194 INFO ]: With dead ends: 15 [2018-06-18 17:04:06,194 INFO ]: Without dead ends: 15 [2018-06-18 17:04:06,194 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-06-18 17:04:06,195 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 17:04:06,198 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 17:04:06,198 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 17:04:06,198 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 17:04:06,198 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 17:04:06,198 INFO ]: Finished accepts. word is rejected. [2018-06-18 17:04:06,198 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 17:04:06,198 INFO ]: Interpolant automaton has 8 states. [2018-06-18 17:04:06,198 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 17:04:06,199 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 17:04:06,199 INFO ]: Found error trace [2018-06-18 17:04:06,199 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 17:04:06,199 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 17:04:06,199 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 17:04:06,199 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 17:04:06,199 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 17:04:06,200 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 17:04:06,200 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 17:04:06,200 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 17:04:06,280 INFO ]: Conjunction of SSA is unsat [2018-06-18 17:04:06,281 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 17:04:06,755 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 17:04:06,755 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 17:04:06,755 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 17:04:06,762 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 17:04:06,922 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 17:04:06,922 INFO ]: Conjunction of SSA is unsat [2018-06-18 17:04:06,930 INFO ]: Computing forward predicates... [2018-06-18 17:04:06,980 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 17:04:07,000 WARN ]: expecting exponential blowup for input size 17 Received shutdown request... [2018-06-18 17:04:57,011 INFO ]: Timeout while computing interpolants [2018-06-18 17:04:57,212 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 17:04:57,213 WARN ]: Verification canceled [2018-06-18 17:04:57,227 WARN ]: Timeout [2018-06-18 17:04:57,227 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 05:04:57 BoogieIcfgContainer [2018-06-18 17:04:57,227 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 17:04:57,228 INFO ]: Toolchain (without parser) took 57994.15 ms. Allocated memory was 304.1 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 237.5 MB in the beginning and 945.0 MB in the end (delta: -707.5 MB). Peak memory consumption was 2.7 GB. Max. memory is 3.6 GB. [2018-06-18 17:04:57,229 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 17:04:57,229 INFO ]: ChcToBoogie took 176.10 ms. Allocated memory is still 304.1 MB. Free memory was 236.5 MB in the beginning and 231.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 3.6 GB. [2018-06-18 17:04:57,241 INFO ]: Boogie Preprocessor took 63.15 ms. Allocated memory is still 304.1 MB. Free memory was 231.5 MB in the beginning and 230.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-18 17:04:57,242 INFO ]: RCFGBuilder took 559.87 ms. Allocated memory is still 304.1 MB. Free memory was 230.4 MB in the beginning and 197.0 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 3.6 GB. [2018-06-18 17:04:57,242 INFO ]: TraceAbstraction took 57179.13 ms. Allocated memory was 304.1 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 197.0 MB in the beginning and 945.0 MB in the end (delta: -748.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 3.6 GB. [2018-06-18 17:04:57,255 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 304.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 176.10 ms. Allocated memory is still 304.1 MB. Free memory was 236.5 MB in the beginning and 231.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 63.15 ms. Allocated memory is still 304.1 MB. Free memory was 231.5 MB in the beginning and 230.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 559.87 ms. Allocated memory is still 304.1 MB. Free memory was 230.4 MB in the beginning and 197.0 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57179.13 ms. Allocated memory was 304.1 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 197.0 MB in the beginning and 945.0 MB in the end (delta: -748.0 MB). Peak memory consumption was 2.6 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 transforming 17 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 57.1s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 41 SDs, 0 SdLazy, 27 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, 6 ImplicationChecksByTransitivity, 1.4s 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, 4.7s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1816 SizeOfPredicates, 29 NumberOfNonLiveVariables, 617 ConjunctsInSsa, 45 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/ticket3i_4.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_17-04-57-282.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ticket3i_4.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_17-04-57-282.csv Completed graceful shutdown