java -Xss4m -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_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 15:46:15,496 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 15:46:15,498 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 15:46:15,510 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 15:46:15,510 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 15:46:15,511 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 15:46:15,512 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 15:46:15,517 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 15:46:15,518 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 15:46:15,519 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 15:46:15,521 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 15:46:15,521 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 15:46:15,522 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 15:46:15,523 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 15:46:15,524 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 15:46:15,524 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 15:46:15,528 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 15:46:15,538 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 15:46:15,539 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 15:46:15,540 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 15:46:15,541 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 15:46:15,543 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 15:46:15,543 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 15:46:15,543 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 15:46:15,549 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 15:46:15,550 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 15:46:15,551 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 15:46:15,551 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 15:46:15,552 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 15:46:15,552 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 15:46:15,556 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 15:46:15,557 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 15:46:15,557 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 15:46:15,558 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 15:46:15,558 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 15:46:15,559 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 15:46:15,580 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 15:46:15,580 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 15:46:15,580 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 15:46:15,580 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 15:46:15,581 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 15:46:15,582 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 15:46:15,582 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 15:46:15,583 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 15:46:15,583 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 15:46:15,583 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 15:46:15,583 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 15:46:15,583 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 15:46:15,584 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 15:46:15,584 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 15:46:15,584 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 15:46:15,584 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 15:46:15,584 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 15:46:15,584 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 15:46:15,585 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 15:46:15,585 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 15:46:15,585 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 15:46:15,587 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 15:46:15,587 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 15:46:15,625 INFO ]: Repository-Root is: /tmp [2018-06-25 15:46:15,640 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 15:46:15,643 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 15:46:15,646 INFO ]: Initializing SmtParser... [2018-06-25 15:46:15,646 INFO ]: SmtParser initialized [2018-06-25 15:46:15,647 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284.smt2 [2018-06-25 15:46:15,648 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 [2018-06-25 15:46:15,737 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284.smt2 unknown [2018-06-25 15:46:16,215 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284.smt2 [2018-06-25 15:46:16,219 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 15:46:16,230 INFO ]: Walking toolchain with 4 elements. [2018-06-25 15:46:16,231 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 15:46:16,231 INFO ]: Initializing ChcToBoogie... [2018-06-25 15:46:16,231 INFO ]: ChcToBoogie initialized [2018-06-25 15:46:16,239 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 03:46:16" (1/1) ... [2018-06-25 15:46:16,376 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:46:16 Unit [2018-06-25 15:46:16,376 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 15:46:16,377 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 15:46:16,377 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 15:46:16,377 INFO ]: Boogie Preprocessor initialized [2018-06-25 15:46:16,402 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:46:16" (1/1) ... [2018-06-25 15:46:16,402 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:46:16" (1/1) ... [2018-06-25 15:46:16,424 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:46:16" (1/1) ... [2018-06-25 15:46:16,424 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:46:16" (1/1) ... [2018-06-25 15:46:16,441 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:46:16" (1/1) ... [2018-06-25 15:46:16,442 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:46:16" (1/1) ... [2018-06-25 15:46:16,445 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:46:16" (1/1) ... [2018-06-25 15:46:16,449 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 15:46:16,451 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 15:46:16,451 INFO ]: Initializing RCFGBuilder... [2018-06-25 15:46:16,451 INFO ]: RCFGBuilder initialized [2018-06-25 15:46:16,452 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:46:16" (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) [2018-06-25 15:46:16,470 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 15:46:16,470 INFO ]: Found specification of procedure gotoProc [2018-06-25 15:46:16,470 INFO ]: Found implementation of procedure gotoProc [2018-06-25 15:46:16,470 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 15:46:16,470 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 15:46:16,470 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 [2018-06-25 15:46:16,924 INFO ]: Using library mode [2018-06-25 15:46:16,925 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 03:46:16 BoogieIcfgContainer [2018-06-25 15:46:16,925 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 15:46:16,926 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 15:46:16,926 INFO ]: Initializing TraceAbstraction... [2018-06-25 15:46:16,929 INFO ]: TraceAbstraction initialized [2018-06-25 15:46:16,929 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 03:46:16" (1/3) ... [2018-06-25 15:46:16,930 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59236ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 03:46:16, skipping insertion in model container [2018-06-25 15:46:16,930 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:46:16" (2/3) ... [2018-06-25 15:46:16,930 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59236ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 03:46:16, skipping insertion in model container [2018-06-25 15:46:16,930 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 03:46:16" (3/3) ... [2018-06-25 15:46:16,932 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 15:46:16,941 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 15:46:16,951 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 15:46:16,999 INFO ]: Using default assertion order modulation [2018-06-25 15:46:17,000 INFO ]: Interprodecural is true [2018-06-25 15:46:17,000 INFO ]: Hoare is false [2018-06-25 15:46:17,000 INFO ]: Compute interpolants for FPandBP [2018-06-25 15:46:17,000 INFO ]: Backedges is TWOTRACK [2018-06-25 15:46:17,000 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 15:46:17,000 INFO ]: Difference is false [2018-06-25 15:46:17,000 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 15:46:17,000 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 15:46:17,016 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 15:46:17,028 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 15:46:17,028 INFO ]: Found error trace [2018-06-25 15:46:17,029 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:46:17,029 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:46:17,034 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 15:46:17,037 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:46:17,037 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:46:17,084 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:46:17,084 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:46:17,084 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:46:17,245 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:46:17,412 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:46:17,415 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 15:46:17,415 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 15:46:17,417 INFO ]: Interpolant automaton has 3 states [2018-06-25 15:46:17,432 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 15:46:17,433 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 15:46:17,435 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 15:46:17,533 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:46:17,533 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 15:46:17,535 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 15:46:17,536 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 15:46:17,536 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:46:17,545 INFO ]: With dead ends: 9 [2018-06-25 15:46:17,545 INFO ]: Without dead ends: 9 [2018-06-25 15:46:17,548 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 15:46:17,567 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 15:46:17,598 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 15:46:17,599 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 15:46:17,599 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 15:46:17,601 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 15:46:17,601 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:46:17,601 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 15:46:17,601 INFO ]: Interpolant automaton has 3 states. [2018-06-25 15:46:17,601 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 15:46:17,601 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 15:46:17,601 INFO ]: Found error trace [2018-06-25 15:46:17,601 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:46:17,601 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:46:17,601 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 15:46:17,602 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:46:17,602 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:46:17,602 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:46:17,602 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:46:17,602 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:46:17,699 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:46:18,045 WARN ]: Spent 133.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-06-25 15:46:18,046 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:46:18,046 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:46:18,046 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 [2018-06-25 15:46:18,064 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:46:18,274 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:46:18,287 INFO ]: Computing forward predicates... [2018-06-25 15:46:19,672 WARN ]: expecting exponential blowup for input size 15 [2018-06-25 15:46:19,989 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:46:19,992 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:46:19,995 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:46:19,999 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:46:20,060 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:46:20,068 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 15:46:20,075 WARN ]: expecting exponential blowup for input size 13 [2018-06-25 15:46:20,112 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:46:20,114 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:46:20,123 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:46:20,142 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:46:20,167 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:46:20,185 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:46:20,239 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:46:20,327 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:46:20,328 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:46:20,331 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:46:20,341 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:46:20,377 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:46:20,385 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:46:20,386 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:46:20,399 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:46:20,400 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:46:20,452 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:46:20,454 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:46:20,462 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:46:20,474 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:46:20,490 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:46:20,580 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:46:20,581 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 15:46:20,598 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:46:21,412 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:46:21,414 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:46:21,433 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:46:21,433 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 15:46:21,438 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:46:21,439 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:46:21,442 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:46:21,559 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:46:21,562 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 15:46:21,571 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:46:21,586 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:46:21,592 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:46:52,929 WARN ]: Spent 326.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 8 [2018-06-25 15:46:52,931 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:46:52,954 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 15:46:52,954 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 15:46:52,955 INFO ]: Interpolant automaton has 5 states [2018-06-25 15:46:52,955 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 15:46:52,955 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 15:46:52,955 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 15:46:53,013 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:46:53,013 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 15:46:53,013 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 15:46:53,013 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 15:46:53,013 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:46:53,014 INFO ]: With dead ends: 10 [2018-06-25 15:46:53,014 INFO ]: Without dead ends: 10 [2018-06-25 15:46:53,014 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 15:46:53,015 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 15:46:53,016 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 15:46:53,016 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 15:46:53,016 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 15:46:53,016 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 15:46:53,016 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:46:53,016 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 15:46:53,016 INFO ]: Interpolant automaton has 5 states. [2018-06-25 15:46:53,016 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 15:46:53,016 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 15:46:53,016 INFO ]: Found error trace [2018-06-25 15:46:53,016 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:46:53,017 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:46:53,017 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 15:46:53,017 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:46:53,017 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:46:53,019 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:46:53,019 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:46:53,019 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:46:53,172 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:46:53,545 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2018-06-25 15:46:53,552 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:46:53,552 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:46:53,552 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 [2018-06-25 15:46:53,563 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 15:46:53,729 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 15:46:53,729 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:46:53,741 INFO ]: Computing forward predicates... [2018-06-25 15:46:58,169 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 15:46:58,170 WARN ]: expecting exponential blowup for input size 19 Received shutdown request... [2018-06-25 15:47:14,268 INFO ]: Timeout while computing interpolants [2018-06-25 15:47:14,468 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 15:47:14,469 WARN ]: Verification canceled [2018-06-25 15:47:14,473 WARN ]: Timeout [2018-06-25 15:47:14,473 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 03:47:14 BoogieIcfgContainer [2018-06-25 15:47:14,473 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 15:47:14,474 INFO ]: Toolchain (without parser) took 58254.25 ms. Allocated memory was 307.8 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 242.1 MB in the beginning and 716.9 MB in the end (delta: -474.8 MB). Peak memory consumption was 2.6 GB. Max. memory is 3.6 GB. [2018-06-25 15:47:14,475 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 307.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 15:47:14,475 INFO ]: ChcToBoogie took 145.92 ms. Allocated memory is still 307.8 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. [2018-06-25 15:47:14,476 INFO ]: Boogie Preprocessor took 73.37 ms. Allocated memory is still 307.8 MB. Free memory was 238.1 MB in the beginning and 236.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 15:47:14,476 INFO ]: RCFGBuilder took 474.08 ms. Allocated memory is still 307.8 MB. Free memory was 236.1 MB in the beginning and 198.2 MB in the end (delta: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 3.6 GB. [2018-06-25 15:47:14,486 INFO ]: TraceAbstraction took 57547.36 ms. Allocated memory was 307.8 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 198.2 MB in the beginning and 716.9 MB in the end (delta: -518.7 MB). Peak memory consumption was 2.6 GB. Max. memory is 3.6 GB. [2018-06-25 15:47:14,489 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 307.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 145.92 ms. Allocated memory is still 307.8 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. * Boogie Preprocessor took 73.37 ms. Allocated memory is still 307.8 MB. Free memory was 238.1 MB in the beginning and 236.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 474.08 ms. Allocated memory is still 307.8 MB. Free memory was 236.1 MB in the beginning and 198.2 MB in the end (delta: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57547.36 ms. Allocated memory was 307.8 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 198.2 MB in the beginning and 716.9 MB in the end (delta: -518.7 MB). Peak memory consumption was 2.6 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 10 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was transforming 19 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 57.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 20 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, 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, 35.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 287 SizeOfPredicates, 2 NumberOfNonLiveVariables, 652 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_15-47-14-499.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/FIREFLY_luke_1a_e2_284.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_15-47-14-499.csv Completed graceful shutdown