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.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 18:17:22,210 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 18:17:22,212 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 18:17:22,223 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 18:17:22,224 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 18:17:22,224 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 18:17:22,226 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 18:17:22,227 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 18:17:22,229 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 18:17:22,229 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 18:17:22,230 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 18:17:22,230 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 18:17:22,231 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 18:17:22,237 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 18:17:22,238 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 18:17:22,239 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 18:17:22,240 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 18:17:22,248 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 18:17:22,250 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 18:17:22,251 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 18:17:22,255 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 18:17:22,257 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 18:17:22,257 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 18:17:22,258 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 18:17:22,259 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 18:17:22,259 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 18:17:22,260 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 18:17:22,261 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 18:17:22,261 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 18:17:22,262 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 18:17:22,262 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 18:17:22,263 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 18:17:22,263 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 18:17:22,264 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 18:17:22,264 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 18:17:22,265 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 18:17:22,284 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 18:17:22,284 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 18:17:22,285 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 18:17:22,285 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 18:17:22,286 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 18:17:22,286 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 18:17:22,286 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 18:17:22,287 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 18:17:22,287 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 18:17:22,287 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 18:17:22,287 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 18:17:22,287 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 18:17:22,288 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 18:17:22,288 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 18:17:22,288 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 18:17:22,288 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 18:17:22,288 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 18:17:22,288 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 18:17:22,289 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 18:17:22,290 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 18:17:22,291 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 18:17:22,340 INFO ]: Repository-Root is: /tmp [2018-06-22 18:17:22,356 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 18:17:22,361 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 18:17:22,363 INFO ]: Initializing SmtParser... [2018-06-22 18:17:22,364 INFO ]: SmtParser initialized [2018-06-22 18:17:22,364 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a.smt2 [2018-06-22 18:17:22,365 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 18:17:22,456 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a.smt2 unknown [2018-06-22 18:17:22,965 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a.smt2 [2018-06-22 18:17:22,970 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 18:17:22,977 INFO ]: Walking toolchain with 4 elements. [2018-06-22 18:17:22,978 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 18:17:22,978 INFO ]: Initializing ChcToBoogie... [2018-06-22 18:17:22,978 INFO ]: ChcToBoogie initialized [2018-06-22 18:17:22,981 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:17:22" (1/1) ... [2018-06-22 18:17:23,065 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:17:23 Unit [2018-06-22 18:17:23,065 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 18:17:23,066 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 18:17:23,066 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 18:17:23,066 INFO ]: Boogie Preprocessor initialized [2018-06-22 18:17:23,094 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:17:23" (1/1) ... [2018-06-22 18:17:23,094 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:17:23" (1/1) ... [2018-06-22 18:17:23,108 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:17:23" (1/1) ... [2018-06-22 18:17:23,108 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:17:23" (1/1) ... [2018-06-22 18:17:23,118 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:17:23" (1/1) ... [2018-06-22 18:17:23,119 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:17:23" (1/1) ... [2018-06-22 18:17:23,122 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:17:23" (1/1) ... [2018-06-22 18:17:23,126 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 18:17:23,127 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 18:17:23,127 INFO ]: Initializing RCFGBuilder... [2018-06-22 18:17:23,127 INFO ]: RCFGBuilder initialized [2018-06-22 18:17:23,128 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:17:23" (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 18:17:23,149 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 18:17:23,149 INFO ]: Found specification of procedure False [2018-06-22 18:17:23,149 INFO ]: Found implementation of procedure False [2018-06-22 18:17:23,149 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 18:17:23,149 INFO ]: Found specification of procedure state [2018-06-22 18:17:23,149 INFO ]: Found implementation of procedure state [2018-06-22 18:17:23,149 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 18:17:23,149 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 18:17:23,149 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 18:17:23,537 INFO ]: Using library mode [2018-06-22 18:17:23,538 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:17:23 BoogieIcfgContainer [2018-06-22 18:17:23,538 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 18:17:23,539 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 18:17:23,539 INFO ]: Initializing TraceAbstraction... [2018-06-22 18:17:23,543 INFO ]: TraceAbstraction initialized [2018-06-22 18:17:23,543 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:17:22" (1/3) ... [2018-06-22 18:17:23,544 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 06:17:23, skipping insertion in model container [2018-06-22 18:17:23,544 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:17:23" (2/3) ... [2018-06-22 18:17:23,545 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 06:17:23, skipping insertion in model container [2018-06-22 18:17:23,545 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:17:23" (3/3) ... [2018-06-22 18:17:23,547 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 18:17:23,557 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 18:17:23,567 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 18:17:23,622 INFO ]: Using default assertion order modulation [2018-06-22 18:17:23,622 INFO ]: Interprodecural is true [2018-06-22 18:17:23,622 INFO ]: Hoare is false [2018-06-22 18:17:23,622 INFO ]: Compute interpolants for FPandBP [2018-06-22 18:17:23,622 INFO ]: Backedges is TWOTRACK [2018-06-22 18:17:23,622 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 18:17:23,623 INFO ]: Difference is false [2018-06-22 18:17:23,623 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 18:17:23,623 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 18:17:23,640 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 18:17:23,660 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 18:17:23,661 INFO ]: Found error trace [2018-06-22 18:17:23,662 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:17:23,663 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:17:23,668 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 18:17:23,669 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:17:23,670 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:17:23,713 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:17:23,713 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:17:23,713 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:17:23,834 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:17:24,113 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 18:17:24,117 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 18:17:24,117 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 18:17:24,119 INFO ]: Interpolant automaton has 4 states [2018-06-22 18:17:24,135 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 18:17:24,135 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:17:24,138 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 18:17:24,285 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:17:24,285 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 18:17:24,286 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 18:17:24,287 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 18:17:24,288 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:17:24,316 INFO ]: With dead ends: 13 [2018-06-22 18:17:24,316 INFO ]: Without dead ends: 13 [2018-06-22 18:17:24,318 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 18:17:24,335 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 18:17:24,375 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 18:17:24,376 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 18:17:24,377 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 18:17:24,379 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 18:17:24,379 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:17:24,379 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 18:17:24,379 INFO ]: Interpolant automaton has 4 states. [2018-06-22 18:17:24,379 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 18:17:24,381 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 18:17:24,381 INFO ]: Found error trace [2018-06-22 18:17:24,381 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:17:24,381 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:17:24,381 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 18:17:24,381 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:17:24,382 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:17:24,382 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:17:24,382 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:17:24,382 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:17:24,521 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:17:25,030 WARN ]: Spent 258.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 31 [2018-06-22 18:17:25,199 WARN ]: Spent 132.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 6 [2018-06-22 18:17:25,329 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:17:25,329 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:17:25,329 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 18:17:25,347 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:17:25,478 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:17:25,493 INFO ]: Computing forward predicates... [2018-06-22 18:17:27,076 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:17:27,137 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:17:27,351 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:17:27,353 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:17:27,362 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:17:27,366 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:17:27,423 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 18:17:27,516 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:17:27,522 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:17:27,536 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:17:28,521 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:17:28,527 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:17:28,531 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:17:28,535 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:17:28,552 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:17:28,557 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:17:28,570 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:17:28,572 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:17:28,602 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:17:29,044 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:17:29,054 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:17:29,144 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:17:29,175 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:17:29,199 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:17:29,201 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:17:29,223 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:17:29,224 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:17:29,237 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:17:29,251 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:17:29,443 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:17:29,449 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:17:29,451 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:17:29,452 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:17:29,455 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:17:29,475 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:17:29,476 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:17:29,477 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:17:29,495 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:17:29,501 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:17:50,231 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:17:50,267 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 18:17:50,267 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 18:17:50,268 INFO ]: Interpolant automaton has 7 states [2018-06-22 18:17:50,268 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 18:17:50,268 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 18:17:50,268 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-22 18:17:50,461 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:17:50,461 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 18:17:50,462 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 18:17:50,462 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 18:17:50,462 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:17:50,463 INFO ]: With dead ends: 15 [2018-06-22 18:17:50,463 INFO ]: Without dead ends: 15 [2018-06-22 18:17:50,464 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-22 18:17:50,464 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 18:17:50,467 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 18:17:50,467 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 18:17:50,467 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 18:17:50,467 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 18:17:50,468 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:17:50,468 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 18:17:50,468 INFO ]: Interpolant automaton has 7 states. [2018-06-22 18:17:50,468 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 18:17:50,468 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 18:17:50,468 INFO ]: Found error trace [2018-06-22 18:17:50,468 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:17:50,468 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:17:50,469 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 18:17:50,469 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:17:50,469 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:17:50,470 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:17:50,470 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:17:50,470 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:17:50,568 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:17:51,071 WARN ]: Spent 227.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 43 [2018-06-22 18:17:51,392 WARN ]: Spent 309.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2018-06-22 18:17:51,595 WARN ]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2018-06-22 18:17:51,627 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 18:17:51,628 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:17:51,628 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 18:17:51,643 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 18:17:51,786 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 18:17:51,786 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:17:51,795 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 18:18:30,116 INFO ]: Timeout while computing interpolants [2018-06-22 18:18:30,316 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:18:30,317 WARN ]: Verification canceled [2018-06-22 18:18:30,320 WARN ]: Timeout [2018-06-22 18:18:30,321 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:18:30 BoogieIcfgContainer [2018-06-22 18:18:30,321 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 18:18:30,321 INFO ]: Toolchain (without parser) took 67350.86 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 245.9 MB in the beginning and 1.2 GB in the end (delta: -972.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 18:18:30,322 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 18:18:30,327 INFO ]: ChcToBoogie took 87.78 ms. Allocated memory is still 309.3 MB. Free memory was 244.9 MB in the beginning and 242.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:18:30,328 INFO ]: Boogie Preprocessor took 60.66 ms. Allocated memory is still 309.3 MB. Free memory was 242.9 MB in the beginning and 240.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:18:30,328 INFO ]: RCFGBuilder took 410.69 ms. Allocated memory is still 309.3 MB. Free memory was 240.8 MB in the beginning and 211.8 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:18:30,329 INFO ]: TraceAbstraction took 66781.51 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 211.8 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 18:18:30,332 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 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 87.78 ms. Allocated memory is still 309.3 MB. Free memory was 244.9 MB in the beginning and 242.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 60.66 ms. Allocated memory is still 309.3 MB. Free memory was 242.9 MB in the beginning and 240.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 410.69 ms. Allocated memory is still 309.3 MB. Free memory was 240.8 MB in the beginning and 211.8 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 66781.51 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 211.8 MB in the beginning and 1.2 GB in the end (delta: -1.0 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 26 quantified variables from 32 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 66.7s 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, 2 ImplicationChecksByTransitivity, 0.9s 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, 0.3s SatisfiabilityAnalysisTime, 25.8s 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.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_18-18-30-345.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/FIREFLY_luke_1a.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_18-18-30-345.csv Completed graceful shutdown