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_e2_2755.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 18:14:29,462 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 18:14:29,465 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 18:14:29,478 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 18:14:29,478 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 18:14:29,479 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 18:14:29,480 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 18:14:29,484 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 18:14:29,486 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 18:14:29,486 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 18:14:29,488 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 18:14:29,489 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 18:14:29,489 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 18:14:29,490 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 18:14:29,491 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 18:14:29,491 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 18:14:29,495 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 18:14:29,505 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 18:14:29,506 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 18:14:29,507 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 18:14:29,508 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 18:14:29,510 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 18:14:29,510 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 18:14:29,510 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 18:14:29,514 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 18:14:29,515 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 18:14:29,515 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 18:14:29,516 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 18:14:29,517 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 18:14:29,517 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 18:14:29,517 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 18:14:29,521 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 18:14:29,522 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 18:14:29,522 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 18:14:29,523 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 18:14:29,523 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 18:14:29,544 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 18:14:29,544 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 18:14:29,546 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 18:14:29,546 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 18:14:29,547 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 18:14:29,547 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 18:14:29,548 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 18:14:29,548 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 18:14:29,548 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 18:14:29,548 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 18:14:29,548 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 18:14:29,548 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 18:14:29,549 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 18:14:29,549 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 18:14:29,549 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 18:14:29,549 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 18:14:29,549 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 18:14:29,549 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 18:14:29,550 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 18:14:29,555 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 18:14:29,555 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 18:14:29,602 INFO ]: Repository-Root is: /tmp [2018-06-22 18:14:29,614 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 18:14:29,620 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 18:14:29,621 INFO ]: Initializing SmtParser... [2018-06-22 18:14:29,621 INFO ]: SmtParser initialized [2018-06-22 18:14:29,623 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e2_2755.smt2 [2018-06-22 18:14:29,624 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 18:14:29,713 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e2_2755.smt2 unknown [2018-06-22 18:14:30,186 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e2_2755.smt2 [2018-06-22 18:14:30,190 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 18:14:30,205 INFO ]: Walking toolchain with 4 elements. [2018-06-22 18:14:30,205 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 18:14:30,205 INFO ]: Initializing ChcToBoogie... [2018-06-22 18:14:30,205 INFO ]: ChcToBoogie initialized [2018-06-22 18:14:30,208 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:14:30" (1/1) ... [2018-06-22 18:14:30,328 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:30 Unit [2018-06-22 18:14:30,328 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 18:14:30,329 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 18:14:30,329 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 18:14:30,329 INFO ]: Boogie Preprocessor initialized [2018-06-22 18:14:30,350 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:30" (1/1) ... [2018-06-22 18:14:30,350 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:30" (1/1) ... [2018-06-22 18:14:30,362 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:30" (1/1) ... [2018-06-22 18:14:30,362 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:30" (1/1) ... [2018-06-22 18:14:30,377 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:30" (1/1) ... [2018-06-22 18:14:30,378 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:30" (1/1) ... [2018-06-22 18:14:30,381 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:30" (1/1) ... [2018-06-22 18:14:30,385 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 18:14:30,386 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 18:14:30,386 INFO ]: Initializing RCFGBuilder... [2018-06-22 18:14:30,386 INFO ]: RCFGBuilder initialized [2018-06-22 18:14:30,387 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:30" (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) [2018-06-22 18:14:30,401 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 18:14:30,401 INFO ]: Found specification of procedure False [2018-06-22 18:14:30,401 INFO ]: Found implementation of procedure False [2018-06-22 18:14:30,401 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 18:14:30,401 INFO ]: Found specification of procedure state [2018-06-22 18:14:30,401 INFO ]: Found implementation of procedure state [2018-06-22 18:14:30,401 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 18:14:30,401 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 18:14:30,401 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 [2018-06-22 18:14:30,860 INFO ]: Using library mode [2018-06-22 18:14:30,860 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:14:30 BoogieIcfgContainer [2018-06-22 18:14:30,860 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 18:14:30,862 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 18:14:30,862 INFO ]: Initializing TraceAbstraction... [2018-06-22 18:14:30,868 INFO ]: TraceAbstraction initialized [2018-06-22 18:14:30,868 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:14:30" (1/3) ... [2018-06-22 18:14:30,869 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85e4792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 06:14:30, skipping insertion in model container [2018-06-22 18:14:30,869 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:30" (2/3) ... [2018-06-22 18:14:30,870 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85e4792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:14:30, skipping insertion in model container [2018-06-22 18:14:30,870 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:14:30" (3/3) ... [2018-06-22 18:14:30,872 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 18:14:30,882 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 18:14:30,892 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 18:14:30,940 INFO ]: Using default assertion order modulation [2018-06-22 18:14:30,941 INFO ]: Interprodecural is true [2018-06-22 18:14:30,941 INFO ]: Hoare is false [2018-06-22 18:14:30,941 INFO ]: Compute interpolants for FPandBP [2018-06-22 18:14:30,941 INFO ]: Backedges is TWOTRACK [2018-06-22 18:14:30,941 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 18:14:30,941 INFO ]: Difference is false [2018-06-22 18:14:30,941 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 18:14:30,941 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 18:14:30,958 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 18:14:30,970 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 18:14:30,970 INFO ]: Found error trace [2018-06-22 18:14:30,971 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:14:30,971 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:14:30,976 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 18:14:30,978 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:14:30,979 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:14:31,020 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:14:31,020 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:14:31,020 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:14:31,127 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:14:31,400 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 18:14:31,402 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 18:14:31,402 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 18:14:31,403 INFO ]: Interpolant automaton has 4 states [2018-06-22 18:14:31,414 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 18:14:31,414 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:14:31,416 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 18:14:31,566 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:14:31,566 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 18:14:31,567 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 18:14:31,568 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 18:14:31,568 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:14:31,578 INFO ]: With dead ends: 13 [2018-06-22 18:14:31,578 INFO ]: Without dead ends: 13 [2018-06-22 18:14:31,581 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 18:14:31,596 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 18:14:31,623 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 18:14:31,625 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 18:14:31,625 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 18:14:31,627 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 18:14:31,627 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:14:31,627 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 18:14:31,627 INFO ]: Interpolant automaton has 4 states. [2018-06-22 18:14:31,627 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 18:14:31,628 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 18:14:31,628 INFO ]: Found error trace [2018-06-22 18:14:31,628 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:14:31,629 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:14:31,629 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 18:14:31,629 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:14:31,629 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:14:31,630 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:14:31,630 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:14:31,630 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:14:31,729 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:14:32,777 WARN ]: Spent 814.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 31 [2018-06-22 18:14:33,000 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 1 [2018-06-22 18:14:33,002 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:14:33,003 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:14:33,003 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 18:14:33,020 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:14:33,143 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:14:33,155 INFO ]: Computing forward predicates... [2018-06-22 18:14:34,853 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:34,864 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:34,916 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:34,921 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:34,928 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:34,932 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:34,969 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:34,972 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:34,986 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:35,006 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:35,068 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:14:35,078 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:14:35,100 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:35,103 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:35,120 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:35,892 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:35,894 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:35,903 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:35,915 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:36,049 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:36,051 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:36,073 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:36,077 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:14:36,101 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:36,272 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:36,279 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:36,290 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:36,303 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:14:36,685 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:14:36,694 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:36,753 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:36,766 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 18:14:37,041 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:37,043 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:15:01,718 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:15:01,753 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 18:15:01,753 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 18:15:01,753 INFO ]: Interpolant automaton has 7 states [2018-06-22 18:15:01,753 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 18:15:01,754 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 18:15:01,754 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-22 18:15:02,380 WARN ]: Spent 476.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-06-22 18:15:02,469 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:15:02,469 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 18:15:02,471 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 18:15:02,471 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 18:15:02,471 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:15:02,471 INFO ]: With dead ends: 15 [2018-06-22 18:15:02,471 INFO ]: Without dead ends: 15 [2018-06-22 18:15:02,472 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-22 18:15:02,472 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 18:15:02,475 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 18:15:02,475 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 18:15:02,475 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 18:15:02,475 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 18:15:02,475 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:15:02,475 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 18:15:02,475 INFO ]: Interpolant automaton has 7 states. [2018-06-22 18:15:02,475 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 18:15:02,476 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 18:15:02,476 INFO ]: Found error trace [2018-06-22 18:15:02,476 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:15:02,476 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:15:02,476 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 18:15:02,476 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:15:02,476 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:15:02,477 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:15:02,477 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:15:02,477 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:15:02,567 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:15:03,204 WARN ]: Spent 184.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2018-06-22 18:15:03,344 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 18:15:03,344 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:15:03,344 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 [2018-06-22 18:15:03,352 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 18:15:03,488 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 18:15:03,488 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:15:03,495 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 18:15:34,201 INFO ]: Timeout while computing interpolants [2018-06-22 18:15:34,401 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:15:34,401 WARN ]: Verification canceled [2018-06-22 18:15:34,406 WARN ]: Timeout [2018-06-22 18:15:34,406 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:15:34 BoogieIcfgContainer [2018-06-22 18:15:34,406 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 18:15:34,407 INFO ]: Toolchain (without parser) took 64216.35 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 238.5 MB in the beginning and 769.0 MB in the end (delta: -530.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 18:15:34,408 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 304.1 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 18:15:34,409 INFO ]: ChcToBoogie took 123.54 ms. Allocated memory is still 304.1 MB. Free memory was 236.5 MB in the beginning and 234.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:15:34,409 INFO ]: Boogie Preprocessor took 56.24 ms. Allocated memory is still 304.1 MB. Free memory was 234.5 MB in the beginning and 232.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:15:34,410 INFO ]: RCFGBuilder took 474.78 ms. Allocated memory is still 304.1 MB. Free memory was 232.6 MB in the beginning and 204.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 3.6 GB. [2018-06-22 18:15:34,410 INFO ]: TraceAbstraction took 63544.60 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 204.6 MB in the beginning and 769.0 MB in the end (delta: -564.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 18:15:34,413 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 268.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 123.54 ms. Allocated memory is still 304.1 MB. Free memory was 236.5 MB in the beginning and 234.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 56.24 ms. Allocated memory is still 304.1 MB. Free memory was 234.5 MB in the beginning and 232.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 474.78 ms. Allocated memory is still 304.1 MB. Free memory was 232.6 MB in the beginning and 204.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 63544.60 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 204.6 MB in the beginning and 769.0 MB in the end (delta: -564.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 17 quantified variables from 23 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 63.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.8s 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, 30.1s 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_e2_2755.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_18-15-34-431.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/FIREFLY_luke_1a_e2_284_e2_2755.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_18-15-34-431.csv Completed graceful shutdown