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_e1_2924.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 18:14:09,222 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 18:14:09,224 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 18:14:09,235 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 18:14:09,235 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 18:14:09,236 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 18:14:09,237 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 18:14:09,239 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 18:14:09,241 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 18:14:09,241 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 18:14:09,242 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 18:14:09,242 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 18:14:09,243 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 18:14:09,245 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 18:14:09,245 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 18:14:09,246 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 18:14:09,248 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 18:14:09,250 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 18:14:09,252 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 18:14:09,253 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 18:14:09,254 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 18:14:09,257 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 18:14:09,257 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 18:14:09,257 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 18:14:09,258 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 18:14:09,260 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 18:14:09,260 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 18:14:09,261 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 18:14:09,262 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 18:14:09,263 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 18:14:09,263 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 18:14:09,264 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 18:14:09,264 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 18:14:09,265 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 18:14:09,266 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 18:14:09,266 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 18:14:09,288 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 18:14:09,289 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 18:14:09,289 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 18:14:09,289 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 18:14:09,290 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 18:14:09,290 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 18:14:09,291 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 18:14:09,291 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 18:14:09,291 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 18:14:09,291 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 18:14:09,292 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 18:14:09,292 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 18:14:09,292 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 18:14:09,292 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 18:14:09,293 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 18:14:09,293 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 18:14:09,293 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 18:14:09,293 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 18:14:09,293 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 18:14:09,295 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 18:14:09,295 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 18:14:09,346 INFO ]: Repository-Root is: /tmp [2018-06-22 18:14:09,362 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 18:14:09,368 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 18:14:09,369 INFO ]: Initializing SmtParser... [2018-06-22 18:14:09,369 INFO ]: SmtParser initialized [2018-06-22 18:14:09,370 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e1_2924.smt2 [2018-06-22 18:14:09,371 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 18:14:09,462 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e1_2924.smt2 unknown [2018-06-22 18:14:09,934 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/FIREFLY_luke_1a_e2_284_e1_2924.smt2 [2018-06-22 18:14:09,939 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 18:14:09,944 INFO ]: Walking toolchain with 4 elements. [2018-06-22 18:14:09,945 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 18:14:09,945 INFO ]: Initializing ChcToBoogie... [2018-06-22 18:14:09,945 INFO ]: ChcToBoogie initialized [2018-06-22 18:14:09,948 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:14:09" (1/1) ... [2018-06-22 18:14:10,040 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:10 Unit [2018-06-22 18:14:10,041 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 18:14:10,041 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 18:14:10,041 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 18:14:10,041 INFO ]: Boogie Preprocessor initialized [2018-06-22 18:14:10,090 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:10" (1/1) ... [2018-06-22 18:14:10,090 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:10" (1/1) ... [2018-06-22 18:14:10,103 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:10" (1/1) ... [2018-06-22 18:14:10,103 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:10" (1/1) ... [2018-06-22 18:14:10,120 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:10" (1/1) ... [2018-06-22 18:14:10,121 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:10" (1/1) ... [2018-06-22 18:14:10,124 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:10" (1/1) ... [2018-06-22 18:14:10,137 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 18:14:10,137 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 18:14:10,137 INFO ]: Initializing RCFGBuilder... [2018-06-22 18:14:10,137 INFO ]: RCFGBuilder initialized [2018-06-22 18:14:10,138 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:10" (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 18:14:10,152 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 18:14:10,152 INFO ]: Found specification of procedure False [2018-06-22 18:14:10,152 INFO ]: Found implementation of procedure False [2018-06-22 18:14:10,152 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 18:14:10,152 INFO ]: Found specification of procedure state [2018-06-22 18:14:10,152 INFO ]: Found implementation of procedure state [2018-06-22 18:14:10,152 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 18:14:10,152 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 18:14:10,152 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 18:14:10,549 INFO ]: Using library mode [2018-06-22 18:14:10,550 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:14:10 BoogieIcfgContainer [2018-06-22 18:14:10,550 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 18:14:10,553 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 18:14:10,553 INFO ]: Initializing TraceAbstraction... [2018-06-22 18:14:10,556 INFO ]: TraceAbstraction initialized [2018-06-22 18:14:10,556 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:14:09" (1/3) ... [2018-06-22 18:14:10,557 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 06:14:10, skipping insertion in model container [2018-06-22 18:14:10,557 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:14:10" (2/3) ... [2018-06-22 18:14:10,557 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 06:14:10, skipping insertion in model container [2018-06-22 18:14:10,557 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:14:10" (3/3) ... [2018-06-22 18:14:10,559 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 18:14:10,569 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 18:14:10,579 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 18:14:10,617 INFO ]: Using default assertion order modulation [2018-06-22 18:14:10,618 INFO ]: Interprodecural is true [2018-06-22 18:14:10,618 INFO ]: Hoare is false [2018-06-22 18:14:10,618 INFO ]: Compute interpolants for FPandBP [2018-06-22 18:14:10,618 INFO ]: Backedges is TWOTRACK [2018-06-22 18:14:10,618 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 18:14:10,618 INFO ]: Difference is false [2018-06-22 18:14:10,618 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 18:14:10,618 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 18:14:10,631 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 18:14:10,644 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 18:14:10,644 INFO ]: Found error trace [2018-06-22 18:14:10,645 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:14:10,645 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:14:10,652 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 18:14:10,654 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:14:10,655 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:14:10,700 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:14:10,700 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:14:10,700 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:14:10,809 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:14:11,014 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 18:14:11,017 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 18:14:11,017 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 18:14:11,019 INFO ]: Interpolant automaton has 4 states [2018-06-22 18:14:11,034 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 18:14:11,035 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:14:11,038 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 18:14:11,173 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:14:11,173 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 18:14:11,174 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 18:14:11,176 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 18:14:11,176 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:14:11,191 INFO ]: With dead ends: 13 [2018-06-22 18:14:11,191 INFO ]: Without dead ends: 13 [2018-06-22 18:14:11,194 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 18:14:11,211 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 18:14:11,248 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 18:14:11,250 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 18:14:11,250 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 18:14:11,252 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 18:14:11,252 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:14:11,252 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 18:14:11,252 INFO ]: Interpolant automaton has 4 states. [2018-06-22 18:14:11,252 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 18:14:11,253 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 18:14:11,253 INFO ]: Found error trace [2018-06-22 18:14:11,254 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:14:11,254 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:14:11,254 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 18:14:11,254 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:14:11,254 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:14:11,255 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:14:11,255 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:14:11,255 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:14:11,350 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:14:11,908 WARN ]: Spent 315.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 31 [2018-06-22 18:14:11,956 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:14:11,957 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:14:11,957 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 18:14:11,964 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:14:12,090 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:14:12,104 INFO ]: Computing forward predicates... [2018-06-22 18:14:13,725 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:13,797 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:13,925 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:13,927 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:13,932 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:13,935 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:14:13,973 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 18:14:14,021 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:14,024 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:14,033 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:14,436 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:14,443 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:14,446 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:14,451 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:14,461 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:14,465 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:14,474 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:14,477 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:14,500 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:14,719 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:14,727 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:14,772 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:14,777 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:14:14,797 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:14,799 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:14,814 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:14,816 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:14,826 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:14,838 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:15,062 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:15,069 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:15,073 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:15,074 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 18:14:15,075 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 18:14:15,092 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:15,093 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 18:14:15,094 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:14:15,109 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 18:14:15,115 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 18:14:39,384 WARN ]: Spent 169.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 9 [2018-06-22 18:14:39,429 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 18:14:39,464 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 18:14:39,464 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 18:14:39,465 INFO ]: Interpolant automaton has 7 states [2018-06-22 18:14:39,465 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 18:14:39,465 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 18:14:39,465 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-22 18:14:39,652 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 18:14:39,652 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 18:14:39,653 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 18:14:39,653 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 18:14:39,653 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 18:14:39,654 INFO ]: With dead ends: 15 [2018-06-22 18:14:39,654 INFO ]: Without dead ends: 15 [2018-06-22 18:14:39,655 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-22 18:14:39,655 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 18:14:39,657 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 18:14:39,657 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 18:14:39,657 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 18:14:39,657 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 18:14:39,657 INFO ]: Finished accepts. word is rejected. [2018-06-22 18:14:39,658 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 18:14:39,658 INFO ]: Interpolant automaton has 7 states. [2018-06-22 18:14:39,658 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 18:14:39,658 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 18:14:39,658 INFO ]: Found error trace [2018-06-22 18:14:39,658 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 18:14:39,658 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 18:14:39,658 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 18:14:39,658 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 18:14:39,658 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 18:14:39,660 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:14:39,660 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 18:14:39,660 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 18:14:39,812 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:14:40,433 WARN ]: Spent 211.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 43 [2018-06-22 18:14:40,660 WARN ]: Spent 212.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2018-06-22 18:14:40,809 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2018-06-22 18:14:40,842 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 18:14:40,842 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 18:14:40,842 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 18:14:40,859 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 18:14:40,980 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 18:14:40,980 INFO ]: Conjunction of SSA is unsat [2018-06-22 18:14:40,988 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 18:15:15,965 INFO ]: Timeout while computing interpolants [2018-06-22 18:15:16,166 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 18:15:16,166 WARN ]: Verification canceled [2018-06-22 18:15:16,171 WARN ]: Timeout [2018-06-22 18:15:16,171 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:15:16 BoogieIcfgContainer [2018-06-22 18:15:16,171 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 18:15:16,172 INFO ]: Toolchain (without parser) took 66232.76 ms. Allocated memory was 304.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 241.0 MB in the beginning and 533.3 MB in the end (delta: -292.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 18:15:16,175 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 18:15:16,176 INFO ]: ChcToBoogie took 96.26 ms. Allocated memory is still 304.6 MB. Free memory was 240.0 MB in the beginning and 238.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:15:16,176 INFO ]: Boogie Preprocessor took 95.45 ms. Allocated memory is still 304.6 MB. Free memory was 238.0 MB in the beginning and 236.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 18:15:16,177 INFO ]: RCFGBuilder took 412.59 ms. Allocated memory is still 304.6 MB. Free memory was 236.0 MB in the beginning and 207.0 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 3.6 GB. [2018-06-22 18:15:16,177 INFO ]: TraceAbstraction took 65618.69 ms. Allocated memory was 304.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 207.0 MB in the beginning and 533.3 MB in the end (delta: -326.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 18:15:16,190 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 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 96.26 ms. Allocated memory is still 304.6 MB. Free memory was 240.0 MB in the beginning and 238.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 95.45 ms. Allocated memory is still 304.6 MB. Free memory was 238.0 MB in the beginning and 236.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 412.59 ms. Allocated memory is still 304.6 MB. Free memory was 236.0 MB in the beginning and 207.0 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65618.69 ms. Allocated memory was 304.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 207.0 MB in the beginning and 533.3 MB in the end (delta: -326.4 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 24 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 65.5s 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s 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, 28.1s 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_e1_2924.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_18-15-16-202.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/FIREFLY_luke_1a_e2_284_e1_2924.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_18-15-16-202.csv Completed graceful shutdown