java -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/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/MOESI_all.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 16:24:08,865 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 16:24:08,868 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 16:24:08,885 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 16:24:08,886 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 16:24:08,887 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 16:24:08,888 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 16:24:08,892 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 16:24:08,894 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 16:24:08,896 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 16:24:08,897 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 16:24:08,897 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 16:24:08,898 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 16:24:08,901 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 16:24:08,901 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 16:24:08,902 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 16:24:08,915 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 16:24:08,917 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 16:24:08,918 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 16:24:08,919 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 16:24:08,920 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 16:24:08,922 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 16:24:08,923 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 16:24:08,923 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 16:24:08,927 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 16:24:08,928 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 16:24:08,928 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 16:24:08,929 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 16:24:08,933 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 16:24:08,933 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 16:24:08,934 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 16:24:08,934 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 16:24:08,934 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 16:24:08,935 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 16:24:08,940 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 16:24:08,940 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 16:24:08,953 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 16:24:08,953 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 16:24:08,954 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 16:24:08,954 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 16:24:08,955 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 16:24:08,956 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 16:24:08,956 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 16:24:08,956 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 16:24:08,956 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 16:24:08,956 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 16:24:08,957 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 16:24:08,957 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 16:24:08,957 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 16:24:08,957 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 16:24:08,957 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 16:24:08,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 16:24:08,958 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 16:24:08,959 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 16:24:08,959 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 16:24:09,008 INFO ]: Repository-Root is: /tmp [2018-06-18 16:24:09,023 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 16:24:09,029 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 16:24:09,031 INFO ]: Initializing SmtParser... [2018-06-18 16:24:09,031 INFO ]: SmtParser initialized [2018-06-18 16:24:09,032 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/MOESI_all.smt2 [2018-06-18 16:24:09,033 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 [2018-06-18 16:24:09,125 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MOESI_all.smt2 unknown [2018-06-18 16:24:09,661 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/MOESI_all.smt2 [2018-06-18 16:24:09,665 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 16:24:09,671 INFO ]: Walking toolchain with 4 elements. [2018-06-18 16:24:09,671 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 16:24:09,671 INFO ]: Initializing ChcToBoogie... [2018-06-18 16:24:09,671 INFO ]: ChcToBoogie initialized [2018-06-18 16:24:09,681 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:24:09" (1/1) ... [2018-06-18 16:24:09,791 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:24:09 Unit [2018-06-18 16:24:09,791 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 16:24:09,792 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 16:24:09,792 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 16:24:09,792 INFO ]: Boogie Preprocessor initialized [2018-06-18 16:24:09,811 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:24:09" (1/1) ... [2018-06-18 16:24:09,811 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:24:09" (1/1) ... [2018-06-18 16:24:09,822 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:24:09" (1/1) ... [2018-06-18 16:24:09,822 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:24:09" (1/1) ... [2018-06-18 16:24:09,829 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:24:09" (1/1) ... [2018-06-18 16:24:09,831 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:24:09" (1/1) ... [2018-06-18 16:24:09,836 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:24:09" (1/1) ... [2018-06-18 16:24:09,839 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 16:24:09,840 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 16:24:09,840 INFO ]: Initializing RCFGBuilder... [2018-06-18 16:24:09,840 INFO ]: RCFGBuilder initialized [2018-06-18 16:24:09,844 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:24:09" (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 [2018-06-18 16:24:09,863 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 16:24:09,863 INFO ]: Found specification of procedure False [2018-06-18 16:24:09,863 INFO ]: Found implementation of procedure False [2018-06-18 16:24:09,863 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 16:24:09,863 INFO ]: Found specification of procedure state [2018-06-18 16:24:09,863 INFO ]: Found implementation of procedure state [2018-06-18 16:24:09,863 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 16:24:09,863 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 16:24:09,863 INFO ]: Found implementation of procedure Ultimate.START [2018-06-18 16:24:10,313 INFO ]: Using library mode [2018-06-18 16:24:10,313 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:24:10 BoogieIcfgContainer [2018-06-18 16:24:10,313 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 16:24:10,316 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 16:24:10,316 INFO ]: Initializing TraceAbstraction... [2018-06-18 16:24:10,319 INFO ]: TraceAbstraction initialized [2018-06-18 16:24:10,319 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:24:09" (1/3) ... [2018-06-18 16:24:10,323 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7890d535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 04:24:10, skipping insertion in model container [2018-06-18 16:24:10,323 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:24:09" (2/3) ... [2018-06-18 16:24:10,323 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7890d535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 04:24:10, skipping insertion in model container [2018-06-18 16:24:10,323 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:24:10" (3/3) ... [2018-06-18 16:24:10,325 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 16:24:10,335 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 16:24:10,345 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 16:24:10,395 INFO ]: Using default assertion order modulation [2018-06-18 16:24:10,395 INFO ]: Interprodecural is true [2018-06-18 16:24:10,395 INFO ]: Hoare is false [2018-06-18 16:24:10,395 INFO ]: Compute interpolants for FPandBP [2018-06-18 16:24:10,396 INFO ]: Backedges is TWOTRACK [2018-06-18 16:24:10,396 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 16:24:10,396 INFO ]: Difference is false [2018-06-18 16:24:10,396 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 16:24:10,396 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 16:24:10,414 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 16:24:10,424 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 16:24:10,424 INFO ]: Found error trace [2018-06-18 16:24:10,425 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:24:10,425 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:24:10,431 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-18 16:24:10,433 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:24:10,433 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:24:10,474 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:24:10,474 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:24:10,474 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:24:10,564 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:24:10,574 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:24:10,796 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 16:24:10,799 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 16:24:10,799 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 16:24:10,801 INFO ]: Interpolant automaton has 4 states [2018-06-18 16:24:10,819 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 16:24:10,820 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 16:24:10,822 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 16:24:10,965 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:24:10,965 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 16:24:10,967 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 16:24:10,968 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 16:24:10,969 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:24:10,983 INFO ]: With dead ends: 13 [2018-06-18 16:24:10,983 INFO ]: Without dead ends: 13 [2018-06-18 16:24:10,985 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 [2018-06-18 16:24:11,003 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 16:24:11,029 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 16:24:11,031 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 16:24:11,031 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 16:24:11,032 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 16:24:11,033 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:24:11,033 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 16:24:11,033 INFO ]: Interpolant automaton has 4 states. [2018-06-18 16:24:11,033 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 16:24:11,035 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 16:24:11,035 INFO ]: Found error trace [2018-06-18 16:24:11,035 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:24:11,035 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:24:11,035 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-18 16:24:11,035 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:24:11,035 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:24:11,036 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:24:11,036 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:24:11,036 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:24:11,263 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:24:11,264 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:24:15,254 WARN ]: Spent 3.52 s on a formula simplification. DAG size of input: 336 DAG size of output: 186 [2018-06-18 16:24:15,756 WARN ]: Spent 343.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 4 [2018-06-18 16:24:15,760 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:24:15,760 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:24:15,760 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 [2018-06-18 16:24:15,776 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:24:15,872 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:24:15,887 INFO ]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown