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/FIREFLY_luke_1a.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 15:34:07,520 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 15:34:07,522 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 15:34:07,536 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 15:34:07,537 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 15:34:07,538 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 15:34:07,539 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 15:34:07,550 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 15:34:07,552 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 15:34:07,553 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 15:34:07,553 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 15:34:07,554 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 15:34:07,555 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 15:34:07,556 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 15:34:07,556 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 15:34:07,560 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 15:34:07,562 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 15:34:07,574 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 15:34:07,576 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 15:34:07,577 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 15:34:07,579 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 15:34:07,581 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 15:34:07,588 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 15:34:07,588 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 15:34:07,589 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 15:34:07,590 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 15:34:07,591 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 15:34:07,591 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 15:34:07,593 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 15:34:07,593 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 15:34:07,593 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 15:34:07,601 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 15:34:07,601 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 15:34:07,602 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 15:34:07,603 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 15:34:07,603 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 15:34:07,626 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 15:34:07,627 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 15:34:07,628 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 15:34:07,628 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 15:34:07,629 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 15:34:07,629 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 15:34:07,630 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 15:34:07,630 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 15:34:07,630 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 15:34:07,630 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 15:34:07,630 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 15:34:07,633 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 15:34:07,634 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 15:34:07,634 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 15:34:07,634 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 15:34:07,634 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 15:34:07,635 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 15:34:07,636 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 15:34:07,636 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 15:34:07,693 INFO ]: Repository-Root is: /tmp [2018-06-18 15:34:07,707 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 15:34:07,712 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 15:34:07,713 INFO ]: Initializing SmtParser... [2018-06-18 15:34:07,714 INFO ]: SmtParser initialized [2018-06-18 15:34:07,714 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a.smt2 [2018-06-18 15:34:07,716 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 15:34:07,812 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a.smt2 unknown [2018-06-18 15:34:08,428 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a.smt2 [2018-06-18 15:34:08,432 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 15:34:08,449 INFO ]: Walking toolchain with 4 elements. [2018-06-18 15:34:08,449 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 15:34:08,449 INFO ]: Initializing ChcToBoogie... [2018-06-18 15:34:08,450 INFO ]: ChcToBoogie initialized [2018-06-18 15:34:08,456 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 03:34:08" (1/1) ... [2018-06-18 15:34:08,582 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:34:08 Unit [2018-06-18 15:34:08,582 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 15:34:08,583 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 15:34:08,583 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 15:34:08,583 INFO ]: Boogie Preprocessor initialized [2018-06-18 15:34:08,605 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:34:08" (1/1) ... [2018-06-18 15:34:08,605 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:34:08" (1/1) ... [2018-06-18 15:34:08,629 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:34:08" (1/1) ... [2018-06-18 15:34:08,629 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:34:08" (1/1) ... [2018-06-18 15:34:08,638 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:34:08" (1/1) ... [2018-06-18 15:34:08,639 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:34:08" (1/1) ... [2018-06-18 15:34:08,643 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:34:08" (1/1) ... [2018-06-18 15:34:08,647 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 15:34:08,648 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 15:34:08,648 INFO ]: Initializing RCFGBuilder... [2018-06-18 15:34:08,648 INFO ]: RCFGBuilder initialized [2018-06-18 15:34:08,649 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:34:08" (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 15:34:08,670 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 15:34:08,670 INFO ]: Found specification of procedure False [2018-06-18 15:34:08,670 INFO ]: Found implementation of procedure False [2018-06-18 15:34:08,670 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 15:34:08,670 INFO ]: Found specification of procedure state [2018-06-18 15:34:08,670 INFO ]: Found implementation of procedure state [2018-06-18 15:34:08,670 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 15:34:08,670 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 15:34:08,670 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 15:34:09,185 INFO ]: Using library mode [2018-06-18 15:34:09,186 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 03:34:09 BoogieIcfgContainer [2018-06-18 15:34:09,186 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 15:34:09,187 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 15:34:09,187 INFO ]: Initializing TraceAbstraction... [2018-06-18 15:34:09,194 INFO ]: TraceAbstraction initialized [2018-06-18 15:34:09,194 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 03:34:08" (1/3) ... [2018-06-18 15:34:09,195 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eae13e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 03:34:09, skipping insertion in model container [2018-06-18 15:34:09,195 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:34:08" (2/3) ... [2018-06-18 15:34:09,195 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eae13e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 03:34:09, skipping insertion in model container [2018-06-18 15:34:09,195 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 03:34:09" (3/3) ... [2018-06-18 15:34:09,198 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 15:34:09,208 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 15:34:09,218 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 15:34:09,271 INFO ]: Using default assertion order modulation [2018-06-18 15:34:09,272 INFO ]: Interprodecural is true [2018-06-18 15:34:09,272 INFO ]: Hoare is false [2018-06-18 15:34:09,272 INFO ]: Compute interpolants for FPandBP [2018-06-18 15:34:09,272 INFO ]: Backedges is TWOTRACK [2018-06-18 15:34:09,272 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 15:34:09,272 INFO ]: Difference is false [2018-06-18 15:34:09,272 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 15:34:09,272 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 15:34:09,292 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 15:34:09,306 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 15:34:09,306 INFO ]: Found error trace [2018-06-18 15:34:09,308 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:34:09,308 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:34:09,313 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 15:34:09,315 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:34:09,316 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:34:09,370 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:34:09,370 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:34:09,370 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:34:09,457 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:34:09,466 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:34:09,717 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 15:34:09,719 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 15:34:09,719 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 15:34:09,721 INFO ]: Interpolant automaton has 4 states [2018-06-18 15:34:09,732 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 15:34:09,732 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 15:34:09,734 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 15:34:09,893 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 15:34:09,894 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 15:34:09,895 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 15:34:09,896 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 15:34:09,897 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 15:34:09,911 INFO ]: With dead ends: 13 [2018-06-18 15:34:09,911 INFO ]: Without dead ends: 13 [2018-06-18 15:34:09,913 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 15:34:09,931 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 15:34:09,961 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 15:34:09,963 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 15:34:09,963 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 15:34:09,965 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 15:34:09,965 INFO ]: Finished accepts. word is rejected. [2018-06-18 15:34:09,965 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 15:34:09,965 INFO ]: Interpolant automaton has 4 states. [2018-06-18 15:34:09,965 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 15:34:09,966 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 15:34:09,966 INFO ]: Found error trace [2018-06-18 15:34:09,966 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:34:09,967 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:34:09,967 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 15:34:09,967 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:34:09,967 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:34:09,968 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:34:09,968 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:34:09,968 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:34:10,074 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:34:10,075 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:34:10,938 WARN ]: Spent 569.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 34 [2018-06-18 15:34:11,012 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 15:34:11,012 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 15:34:11,013 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 15:34:11,023 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:34:11,161 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:34:11,174 INFO ]: Computing forward predicates... [2018-06-18 15:34:13,192 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:34:13,220 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 15:34:13,943 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 15:34:13,999 WARN ]: expecting exponential blowup for input size 11 [2018-06-18 15:34:14,367 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 15:34:14,376 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:34:14,491 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 15:34:14,495 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 15:34:14,499 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:34:14,505 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 15:34:14,521 WARN ]: expecting exponential blowup for input size 11 [2018-06-18 15:34:14,547 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 15:34:14,755 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:34:14,772 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:34:14,813 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 15:34:14,818 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 15:34:15,461 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 15:34:15,462 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 15:34:15,489 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 15:34:15,491 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 15:34:15,512 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:34:15,516 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:34:15,522 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:34:15,530 WARN ]: expecting exponential blowup for input size 10 [2018-06-18 15:34:34,794 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 15:34:34,821 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 15:34:34,821 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-18 15:34:34,822 INFO ]: Interpolant automaton has 7 states [2018-06-18 15:34:34,822 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-18 15:34:34,822 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-18 15:34:34,822 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-18 15:34:34,965 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 15:34:34,965 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 15:34:34,966 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 15:34:34,966 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-18 15:34:34,966 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 15:34:34,967 INFO ]: With dead ends: 15 [2018-06-18 15:34:34,967 INFO ]: Without dead ends: 15 [2018-06-18 15:34:34,968 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-18 15:34:34,968 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 15:34:34,970 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 15:34:34,970 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 15:34:34,970 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 15:34:34,970 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 15:34:34,970 INFO ]: Finished accepts. word is rejected. [2018-06-18 15:34:34,970 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 15:34:34,970 INFO ]: Interpolant automaton has 7 states. [2018-06-18 15:34:34,971 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 15:34:34,971 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 15:34:34,971 INFO ]: Found error trace [2018-06-18 15:34:34,971 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:34:34,971 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:34:34,971 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 15:34:34,971 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:34:34,971 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:34:34,972 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:34:34,972 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:34:34,972 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:34:35,162 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:34:35,163 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:34:36,011 WARN ]: Spent 444.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 49 [2018-06-18 15:34:36,590 WARN ]: Spent 537.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 94 [2018-06-18 15:34:36,769 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2018-06-18 15:34:36,807 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 15:34:36,807 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 15:34:36,807 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) [2018-06-18 15:34:36,822 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 15:34:36,943 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 15:34:36,943 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:34:36,951 INFO ]: Computing forward predicates... [2018-06-18 15:34:37,103 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 15:34:37,104 WARN ]: expecting exponential blowup for input size 26 Received shutdown request... [2018-06-18 15:35:01,470 INFO ]: Timeout while computing interpolants [2018-06-18 15:35:01,672 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 15:35:01,672 WARN ]: Verification canceled [2018-06-18 15:35:01,677 WARN ]: Timeout [2018-06-18 15:35:01,677 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 03:35:01 BoogieIcfgContainer [2018-06-18 15:35:01,677 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 15:35:01,678 INFO ]: Toolchain (without parser) took 53245.11 ms. Allocated memory was 308.8 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 243.2 MB in the beginning and 964.3 MB in the end (delta: -721.2 MB). Peak memory consumption was 2.7 GB. Max. memory is 3.6 GB. [2018-06-18 15:35:01,679 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 15:35:01,679 INFO ]: ChcToBoogie took 133.28 ms. Allocated memory is still 308.8 MB. Free memory was 243.2 MB in the beginning and 237.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-18 15:35:01,679 INFO ]: Boogie Preprocessor took 64.38 ms. Allocated memory is still 308.8 MB. Free memory was 237.1 MB in the beginning and 236.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-18 15:35:01,680 INFO ]: RCFGBuilder took 537.76 ms. Allocated memory is still 308.8 MB. Free memory was 236.1 MB in the beginning and 207.1 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 3.6 GB. [2018-06-18 15:35:01,680 INFO ]: TraceAbstraction took 52489.73 ms. Allocated memory was 308.8 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 207.1 MB in the beginning and 964.3 MB in the end (delta: -757.3 MB). Peak memory consumption was 2.7 GB. Max. memory is 3.6 GB. [2018-06-18 15:35:01,690 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 133.28 ms. Allocated memory is still 308.8 MB. Free memory was 243.2 MB in the beginning and 237.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 64.38 ms. Allocated memory is still 308.8 MB. Free memory was 237.1 MB in the beginning and 236.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 537.76 ms. Allocated memory is still 308.8 MB. Free memory was 236.1 MB in the beginning and 207.1 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 52489.73 ms. Allocated memory was 308.8 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 207.1 MB in the beginning and 964.3 MB in the end (delta: -757.3 MB). Peak memory consumption was 2.7 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 26 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 52.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 8 SDslu, 39 SDs, 0 SdLazy, 23 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s 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, 0.2s SatisfiabilityAnalysisTime, 24.8s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1308 SizeOfPredicates, 30 NumberOfNonLiveVariables, 526 ConjunctsInSsa, 38 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/FIREFLY_luke_1a.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_15-35-01-708.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/FIREFLY_luke_1a.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_15-35-01-708.csv Completed graceful shutdown