java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e3_3091.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 18:15:19,474 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 18:15:19,476 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 18:15:19,487 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 18:15:19,487 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 18:15:19,488 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 18:15:19,489 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 18:15:19,491 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 18:15:19,493 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 18:15:19,494 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 18:15:19,495 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 18:15:19,495 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 18:15:19,496 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 18:15:19,497 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 18:15:19,498 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 18:15:19,498 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 18:15:19,500 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 18:15:19,502 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 18:15:19,504 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 18:15:19,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 18:15:19,506 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 18:15:19,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 18:15:19,509 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 18:15:19,509 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 18:15:19,510 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 18:15:19,511 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 18:15:19,511 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 18:15:19,512 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 18:15:19,513 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 18:15:19,513 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 18:15:19,514 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 18:15:19,515 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 18:15:19,515 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 18:15:19,516 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 18:15:19,516 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 18:15:19,517 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 18:15:19,530 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 18:15:19,530 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 18:15:19,531 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 18:15:19,531 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 18:15:19,532 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 18:15:19,532 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 18:15:19,532 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 18:15:19,533 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 18:15:19,533 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 18:15:19,533 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 18:15:19,533 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 18:15:19,534 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 18:15:19,534 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 18:15:19,534 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 18:15:19,534 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 18:15:19,534 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 18:15:19,535 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 18:15:19,535 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 18:15:19,535 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 18:15:19,536 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 18:15:19,538 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 18:15:19,588 INFO ]: Repository-Root is: /tmp [2018-06-22 18:15:19,599 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 18:15:19,607 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 18:15:19,608 INFO ]: Initializing SmtParser... [2018-06-22 18:15:19,608 INFO ]: SmtParser initialized [2018-06-22 18:15:19,609 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e3_3091.smt2 [2018-06-22 18:15:19,611 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 [2018-06-22 18:15:19,709 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e3_3091.smt2 unknown [2018-06-22 18:15:20,271 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e3_3091.smt2 [2018-06-22 18:15:20,275 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 18:15:20,291 INFO ]: Walking toolchain with 4 elements. [2018-06-22 18:15:20,291 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 18:15:20,291 INFO ]: Initializing ChcToBoogie... [2018-06-22 18:15:20,292 INFO ]: ChcToBoogie initialized [2018-06-22 18:15:20,300 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:15:20" (1/1) ... [2018-06-22 18:15:20,382 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:15:20 Unit [2018-06-22 18:15:20,382 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 18:15:20,383 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 18:15:20,383 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 18:15:20,383 INFO ]: Boogie Preprocessor initialized [2018-06-22 18:15:20,432 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:15:20" (1/1) ... [2018-06-22 18:15:20,432 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:15:20" (1/1) ... [2018-06-22 18:15:20,453 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:15:20" (1/1) ... [2018-06-22 18:15:20,453 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:15:20" (1/1) ... [2018-06-22 18:15:20,465 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:15:20" (1/1) ... [2018-06-22 18:15:20,467 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:15:20" (1/1) ... [2018-06-22 18:15:20,470 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:15:20" (1/1) ... [2018-06-22 18:15:20,474 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 18:15:20,474 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 18:15:20,474 INFO ]: Initializing RCFGBuilder... [2018-06-22 18:15:20,474 INFO ]: RCFGBuilder initialized [2018-06-22 18:15:20,475 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:15:20" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 18:15:20,486 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 18:15:20,486 INFO ]: Found specification of procedure False [2018-06-22 18:15:20,486 INFO ]: Found implementation of procedure False [2018-06-22 18:15:20,486 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 18:15:20,486 INFO ]: Found specification of procedure state [2018-06-22 18:15:20,486 INFO ]: Found implementation of procedure state [2018-06-22 18:15:20,486 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 18:15:20,486 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 18:15:20,486 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 18:15:20,821 INFO ]: Using library mode [2018-06-22 18:15:20,822 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:15:20 BoogieIcfgContainer [2018-06-22 18:15:20,822 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 18:15:20,826 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 18:15:20,826 INFO ]: Initializing TraceAbstraction... [2018-06-22 18:15:20,831 INFO ]: TraceAbstraction initialized [2018-06-22 18:15:20,831 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:15:20" (1/3) ... [2018-06-22 18:15:20,832 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e4ed36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 06:15:20, skipping insertion in model container [2018-06-22 18:15:20,832 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:15:20" (2/3) ... [2018-06-22 18:15:20,832 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e4ed36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:15:20, skipping insertion in model container [2018-06-22 18:15:20,833 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:15:20" (3/3) ... [2018-06-22 18:15:20,835 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 18:15:20,845 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 18:15:20,858 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 18:15:20,900 INFO ]: Using default assertion order modulation [2018-06-22 18:15:20,900 INFO ]: Interprodecural is true [2018-06-22 18:15:20,900 INFO ]: Hoare is false [2018-06-22 18:15:20,900 INFO ]: Compute interpolants for FPandBP [2018-06-22 18:15:20,900 INFO ]: Backedges is TWOTRACK [2018-06-22 18:15:20,900 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 18:15:20,900 INFO ]: Difference is false [2018-06-22 18:15:20,901 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 18:15:20,901 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 18:15:20,913 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 18:15:20,923 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 18:15:20,924 INFO ]: Found error trace [2018-06-22 18:15:20,927 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:15:20,927 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:15:20,933 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 18:15:20,935 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:15:20,936 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:15:20,976 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:15:20,976 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:15:20,976 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:15:21,087 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:15:21,380 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 18:15:21,381 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 18:15:21,381 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 18:15:21,383 INFO ]: Interpolant automaton has 4 states [2018-06-22 18:15:21,393 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 18:15:21,393 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:15:21,395 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 18:15:21,553 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:15:21,553 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 18:15:21,554 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 18:15:21,556 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 18:15:21,556 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:15:21,568 INFO ]: With dead ends: 13 [2018-06-22 18:15:21,568 INFO ]: Without dead ends: 13 [2018-06-22 18:15:21,570 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 [2018-06-22 18:15:21,583 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 18:15:21,621 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 18:15:21,622 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 18:15:21,623 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 18:15:21,625 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 18:15:21,625 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:15:21,625 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 18:15:21,625 INFO ]: Interpolant automaton has 4 states. [2018-06-22 18:15:21,625 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 18:15:21,627 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 18:15:21,627 INFO ]: Found error trace [2018-06-22 18:15:21,627 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:15:21,627 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:15:21,627 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 18:15:21,628 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:15:21,628 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:15:21,628 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:15:21,628 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:15:21,628 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:15:21,702 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:15:22,258 WARN ]: Spent 368.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 31 [2018-06-22 18:15:22,391 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:15:22,391 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:15:22,391 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 [2018-06-22 18:15:22,398 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:15:22,545 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:15:22,557 INFO ]: Computing forward predicates... [2018-06-22 18:15:24,317 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:15:24,330 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:15:24,361 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:15:24,366 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:15:24,372 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:15:24,376 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:15:24,415 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:15:24,418 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:15:24,435 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:15:24,460 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:15:24,564 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:15:24,596 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:15:24,631 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:15:24,639 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:15:24,654 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:15:25,379 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:15:25,384 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:15:25,397 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:15:25,411 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:15:25,541 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:15:25,543 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:15:25,599 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:15:25,604 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:15:25,625 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:15:25,808 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:15:25,818 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:15:25,825 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:15:25,837 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:15:26,173 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:15:26,184 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:15:26,241 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:15:26,252 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 18:15:26,468 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:15:26,469 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:15:49,498 WARN ]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 9 [2018-06-22 18:15:49,514 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:15:49,543 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 18:15:49,544 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 18:15:49,544 INFO ]: Interpolant automaton has 7 states [2018-06-22 18:15:49,544 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 18:15:49,544 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 18:15:49,545 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-22 18:15:50,677 WARN ]: Spent 1.03 s on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-06-22 18:15:50,764 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:15:50,764 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 18:15:50,765 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 18:15:50,765 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 18:15:50,766 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:15:50,766 INFO ]: With dead ends: 15 [2018-06-22 18:15:50,766 INFO ]: Without dead ends: 15 [2018-06-22 18:15:50,767 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-22 18:15:50,767 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 18:15:50,770 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 18:15:50,770 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 18:15:50,770 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 18:15:50,770 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 18:15:50,771 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:15:50,771 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 18:15:50,771 INFO ]: Interpolant automaton has 7 states. [2018-06-22 18:15:50,771 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 18:15:50,771 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 18:15:50,771 INFO ]: Found error trace [2018-06-22 18:15:50,771 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:15:50,771 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:15:50,772 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 18:15:50,772 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:15:50,772 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:15:50,773 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:15:50,773 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:15:50,773 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:15:50,963 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:15:51,622 WARN ]: Spent 317.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 59 [2018-06-22 18:15:52,264 WARN ]: Spent 557.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 83 [2018-06-22 18:15:52,432 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2018-06-22 18:15:52,494 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 18:15:52,494 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:15:52,494 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) [2018-06-22 18:15:52,510 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:15:52,654 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 18:15:52,654 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:15:52,661 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 18:16:21,123 INFO ]: Timeout while computing interpolants [2018-06-22 18:16:21,324 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:16:21,324 WARN ]: Verification canceled [2018-06-22 18:16:21,328 WARN ]: Timeout [2018-06-22 18:16:21,329 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:16:21 BoogieIcfgContainer [2018-06-22 18:16:21,329 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 18:16:21,330 INFO ]: Toolchain (without parser) took 61053.64 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 243.1 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 18:16:21,330 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 18:16:21,331 INFO ]: ChcToBoogie took 90.95 ms. Allocated memory is still 306.7 MB. Free memory was 242.1 MB in the beginning and 240.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:16:21,331 INFO ]: Boogie Preprocessor took 91.15 ms. Allocated memory is still 306.7 MB. Free memory was 240.1 MB in the beginning and 238.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:16:21,332 INFO ]: RCFGBuilder took 347.79 ms. Allocated memory is still 306.7 MB. Free memory was 238.1 MB in the beginning and 209.0 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:16:21,332 INFO ]: TraceAbstraction took 60502.34 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 209.0 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 18:16:21,345 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 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 90.95 ms. Allocated memory is still 306.7 MB. Free memory was 242.1 MB in the beginning and 240.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 91.15 ms. Allocated memory is still 306.7 MB. Free memory was 240.1 MB in the beginning and 238.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 347.79 ms. Allocated memory is still 306.7 MB. Free memory was 238.1 MB in the beginning and 209.0 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60502.34 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 209.0 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). 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 XnfDer was eliminating 23 quantified variables from 31 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 60.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 8 SDslu, 39 SDs, 0 SdLazy, 23 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 27.9s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1236 SizeOfPredicates, 33 NumberOfNonLiveVariables, 526 ConjunctsInSsa, 40 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_e2_284_e3_3091.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_18-16-21-356.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/FIREFLY_luke_1a_e2_284_e3_3091.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_18-16-21-356.csv Completed graceful shutdown