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/ticket3i_3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:33:25,942 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:33:25,944 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:33:25,959 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:33:25,959 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:33:25,960 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:33:25,961 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:33:25,965 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:33:25,967 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:33:25,969 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:33:25,970 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:33:25,970 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:33:25,971 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:33:25,972 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:33:25,976 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:33:25,977 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:33:25,979 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:33:25,992 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:33:25,993 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:33:25,994 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:33:25,995 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:33:26,001 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:33:26,001 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:33:26,001 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:33:26,002 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:33:26,003 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:33:26,003 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:33:26,004 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:33:26,005 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:33:26,005 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:33:26,006 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:33:26,006 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:33:26,007 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:33:26,007 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:33:26,008 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:33:26,008 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 20:33:26,021 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:33:26,022 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:33:26,022 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:33:26,022 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:33:26,023 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:33:26,023 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:33:26,023 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:33:26,024 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:33:26,024 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:33:26,024 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:33:26,024 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:33:26,025 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:33:26,025 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:33:26,025 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:33:26,025 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:33:26,025 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:33:26,026 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:33:26,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:33:26,026 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:33:26,027 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:33:26,028 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:33:26,082 INFO ]: Repository-Root is: /tmp [2018-06-22 20:33:26,097 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:33:26,103 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:33:26,104 INFO ]: Initializing SmtParser... [2018-06-22 20:33:26,104 INFO ]: SmtParser initialized [2018-06-22 20:33:26,105 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_3.smt2 [2018-06-22 20:33:26,107 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 20:33:26,199 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_3.smt2 unknown [2018-06-22 20:33:26,804 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ticket3i_3.smt2 [2018-06-22 20:33:26,809 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:33:26,820 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:33:26,821 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:33:26,821 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:33:26,821 INFO ]: ChcToBoogie initialized [2018-06-22 20:33:26,829 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:33:26" (1/1) ... [2018-06-22 20:33:26,890 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:33:26 Unit [2018-06-22 20:33:26,890 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:33:26,891 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:33:26,891 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:33:26,891 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:33:26,913 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:33:26" (1/1) ... [2018-06-22 20:33:26,913 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:33:26" (1/1) ... [2018-06-22 20:33:26,928 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:33:26" (1/1) ... [2018-06-22 20:33:26,928 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:33:26" (1/1) ... [2018-06-22 20:33:26,948 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:33:26" (1/1) ... [2018-06-22 20:33:26,958 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:33:26" (1/1) ... [2018-06-22 20:33:26,961 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:33:26" (1/1) ... [2018-06-22 20:33:26,966 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:33:26,966 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:33:26,966 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:33:26,966 INFO ]: RCFGBuilder initialized [2018-06-22 20:33:26,967 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:33:26" (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 20:33:26,977 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:33:26,977 INFO ]: Found specification of procedure False [2018-06-22 20:33:26,977 INFO ]: Found implementation of procedure False [2018-06-22 20:33:26,977 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:33:26,977 INFO ]: Found specification of procedure state [2018-06-22 20:33:26,977 INFO ]: Found implementation of procedure state [2018-06-22 20:33:26,977 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:33:26,977 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:33:26,977 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 20:33:27,398 INFO ]: Using library mode [2018-06-22 20:33:27,398 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:33:27 BoogieIcfgContainer [2018-06-22 20:33:27,398 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:33:27,402 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:33:27,402 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:33:27,406 INFO ]: TraceAbstraction initialized [2018-06-22 20:33:27,406 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:33:26" (1/3) ... [2018-06-22 20:33:27,407 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9b8dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:33:27, skipping insertion in model container [2018-06-22 20:33:27,407 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:33:26" (2/3) ... [2018-06-22 20:33:27,408 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9b8dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:33:27, skipping insertion in model container [2018-06-22 20:33:27,408 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:33:27" (3/3) ... [2018-06-22 20:33:27,409 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:33:27,419 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:33:27,433 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:33:27,478 INFO ]: Using default assertion order modulation [2018-06-22 20:33:27,478 INFO ]: Interprodecural is true [2018-06-22 20:33:27,478 INFO ]: Hoare is false [2018-06-22 20:33:27,478 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:33:27,478 INFO ]: Backedges is TWOTRACK [2018-06-22 20:33:27,478 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:33:27,478 INFO ]: Difference is false [2018-06-22 20:33:27,478 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:33:27,478 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:33:27,491 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:33:27,504 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:33:27,504 INFO ]: Found error trace [2018-06-22 20:33:27,505 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:33:27,505 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:33:27,512 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 20:33:27,514 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:33:27,515 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:33:27,549 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:33:27,549 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:33:27,549 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:33:27,679 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:33:27,974 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:33:27,976 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:33:27,977 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:33:27,978 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:33:27,996 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:33:27,996 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:33:27,999 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:33:28,142 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:33:28,143 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:33:28,144 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:33:28,145 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:33:28,145 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:33:28,159 INFO ]: With dead ends: 13 [2018-06-22 20:33:28,159 INFO ]: Without dead ends: 13 [2018-06-22 20:33:28,161 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 20:33:28,178 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:33:28,208 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:33:28,209 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:33:28,210 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:33:28,212 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:33:28,212 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:33:28,212 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:33:28,212 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:33:28,212 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:33:28,214 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:33:28,214 INFO ]: Found error trace [2018-06-22 20:33:28,214 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:33:28,214 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:33:28,214 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 20:33:28,214 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:33:28,214 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:33:28,215 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:33:28,215 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:33:28,215 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:33:28,354 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:33:29,646 WARN ]: Spent 990.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 41 [2018-06-22 20:33:29,852 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 1 [2018-06-22 20:33:29,855 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:33:29,855 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:33:29,855 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 20:33:29,864 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:33:30,005 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:33:30,020 INFO ]: Computing forward predicates... [2018-06-22 20:33:30,133 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 20:33:30,147 WARN ]: expecting exponential blowup for input size 16