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/hopv/lia/mochi/twice.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:36:22,885 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:36:22,888 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:36:22,899 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:36:22,901 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:36:22,902 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:36:22,903 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:36:22,905 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:36:22,906 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:36:22,908 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:36:22,909 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:36:22,909 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:36:22,910 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:36:22,915 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:36:22,916 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:36:22,916 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:36:22,928 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:36:22,930 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:36:22,931 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:36:22,932 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:36:22,934 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:36:22,936 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:36:22,936 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:36:22,936 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:36:22,937 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:36:22,938 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:36:22,939 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:36:22,940 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:36:22,941 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:36:22,941 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:36:22,942 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:36:22,942 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:36:22,943 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:36:22,943 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:36:22,944 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:36:22,944 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 11:36:22,965 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:36:22,966 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:36:22,966 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:36:22,966 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:36:22,967 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:36:22,967 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:36:22,968 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:36:22,968 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:36:22,968 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:36:22,968 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:36:22,969 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:36:22,969 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:36:22,969 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:36:22,969 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:36:22,969 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:36:22,970 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:36:22,970 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:36:22,970 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:36:22,970 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:36:22,972 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:36:22,972 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:36:23,025 INFO ]: Repository-Root is: /tmp [2018-06-22 11:36:23,045 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:36:23,051 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:36:23,053 INFO ]: Initializing SmtParser... [2018-06-22 11:36:23,053 INFO ]: SmtParser initialized [2018-06-22 11:36:23,054 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/twice.smt2 [2018-06-22 11:36:23,056 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 11:36:23,151 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/twice.smt2 unknown [2018-06-22 11:36:23,297 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/twice.smt2 [2018-06-22 11:36:23,302 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:36:23,310 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:36:23,310 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:36:23,311 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:36:23,311 INFO ]: ChcToBoogie initialized [2018-06-22 11:36:23,315 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:36:23" (1/1) ... [2018-06-22 11:36:23,366 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:23 Unit [2018-06-22 11:36:23,367 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:36:23,367 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:36:23,368 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:36:23,368 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:36:23,393 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:23" (1/1) ... [2018-06-22 11:36:23,393 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:23" (1/1) ... [2018-06-22 11:36:23,404 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:23" (1/1) ... [2018-06-22 11:36:23,405 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:23" (1/1) ... [2018-06-22 11:36:23,407 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:23" (1/1) ... [2018-06-22 11:36:23,409 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:23" (1/1) ... [2018-06-22 11:36:23,410 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:23" (1/1) ... [2018-06-22 11:36:23,412 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:36:23,416 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:36:23,416 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:36:23,416 INFO ]: RCFGBuilder initialized [2018-06-22 11:36:23,417 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:23" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 11:36:23,430 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:36:23,430 INFO ]: Found specification of procedure False [2018-06-22 11:36:23,430 INFO ]: Found implementation of procedure False [2018-06-22 11:36:23,430 INFO ]: Specification and implementation of procedure twiceDLRunknownCLN6 given in one single declaration [2018-06-22 11:36:23,430 INFO ]: Found specification of procedure twiceDLRunknownCLN6 [2018-06-22 11:36:23,430 INFO ]: Found implementation of procedure twiceDLRunknownCLN6 [2018-06-22 11:36:23,430 INFO ]: Specification and implementation of procedure twiceDLRunknownCLN4 given in one single declaration [2018-06-22 11:36:23,430 INFO ]: Found specification of procedure twiceDLRunknownCLN4 [2018-06-22 11:36:23,430 INFO ]: Found implementation of procedure twiceDLRunknownCLN4 [2018-06-22 11:36:23,430 INFO ]: Specification and implementation of procedure fDLRunknownCLN2 given in one single declaration [2018-06-22 11:36:23,430 INFO ]: Found specification of procedure fDLRunknownCLN2 [2018-06-22 11:36:23,430 INFO ]: Found implementation of procedure fDLRunknownCLN2 [2018-06-22 11:36:23,431 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:36:23,431 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:36:23,431 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 [2018-06-22 11:36:23,689 INFO ]: Using library mode [2018-06-22 11:36:23,689 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:36:23 BoogieIcfgContainer [2018-06-22 11:36:23,689 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:36:23,691 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:36:23,691 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:36:23,694 INFO ]: TraceAbstraction initialized [2018-06-22 11:36:23,695 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:36:23" (1/3) ... [2018-06-22 11:36:23,696 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb1c26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:36:23, skipping insertion in model container [2018-06-22 11:36:23,696 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:23" (2/3) ... [2018-06-22 11:36:23,696 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb1c26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:36:23, skipping insertion in model container [2018-06-22 11:36:23,696 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:36:23" (3/3) ... [2018-06-22 11:36:23,699 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:36:23,711 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:36:23,723 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:36:23,778 INFO ]: Using default assertion order modulation [2018-06-22 11:36:23,779 INFO ]: Interprodecural is true [2018-06-22 11:36:23,779 INFO ]: Hoare is false [2018-06-22 11:36:23,779 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:36:23,779 INFO ]: Backedges is TWOTRACK [2018-06-22 11:36:23,779 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:36:23,779 INFO ]: Difference is false [2018-06-22 11:36:23,779 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:36:23,779 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:36:23,809 INFO ]: Start isEmpty. Operand 21 states. [2018-06-22 11:36:23,823 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:36:23,823 INFO ]: Found error trace [2018-06-22 11:36:23,824 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:36:23,824 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:23,831 INFO ]: Analyzing trace with hash 61576236, now seen corresponding path program 1 times [2018-06-22 11:36:23,832 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:23,833 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:23,870 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:23,870 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:23,870 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:23,889 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:23,914 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:36:23,915 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:36:23,916 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:36:23,917 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:36:23,928 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:36:23,928 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:36:23,930 INFO ]: Start difference. First operand 21 states. Second operand 2 states. [2018-06-22 11:36:23,952 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:23,952 INFO ]: Finished difference Result 19 states and 19 transitions. [2018-06-22 11:36:23,952 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:36:23,953 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:36:23,953 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:23,976 INFO ]: With dead ends: 19 [2018-06-22 11:36:23,976 INFO ]: Without dead ends: 19 [2018-06-22 11:36:23,978 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:36:23,999 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:36:24,016 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 11:36:24,017 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:36:24,018 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-06-22 11:36:24,019 INFO ]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 5 [2018-06-22 11:36:24,019 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:24,019 INFO ]: Abstraction has 19 states and 19 transitions. [2018-06-22 11:36:24,019 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:36:24,019 INFO ]: Start isEmpty. Operand 19 states and 19 transitions. [2018-06-22 11:36:24,021 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:36:24,021 INFO ]: Found error trace [2018-06-22 11:36:24,021 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:24,021 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:24,022 INFO ]: Analyzing trace with hash -757780875, now seen corresponding path program 1 times [2018-06-22 11:36:24,022 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:24,022 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:24,023 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:24,023 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:24,023 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:24,058 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:24,468 INFO ]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:36:24,468 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:24,468 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 11:36:24,478 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:24,516 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:24,527 INFO ]: Computing forward predicates... [2018-06-22 11:36:26,395 INFO ]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 11:36:26,435 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:36:26,435 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 12 [2018-06-22 11:36:26,436 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:36:26,436 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:36:26,437 INFO ]: CoverageRelationStatistics Valid=26, Invalid=105, Unknown=1, NotChecked=0, Total=132 [2018-06-22 11:36:26,437 INFO ]: Start difference. First operand 19 states and 19 transitions. Second operand 12 states. [2018-06-22 11:36:26,717 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:26,717 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 11:36:26,717 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:36:26,717 INFO ]: Start accepts. Automaton has 12 states. Word has length 25 [2018-06-22 11:36:26,717 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:26,717 INFO ]: With dead ends: 15 [2018-06-22 11:36:26,717 INFO ]: Without dead ends: 0 [2018-06-22 11:36:26,719 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=33, Invalid=122, Unknown=1, NotChecked=0, Total=156 [2018-06-22 11:36:26,719 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:36:26,719 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:36:26,719 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:36:26,719 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:36:26,720 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 11:36:26,720 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:26,720 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:36:26,720 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:36:26,720 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:36:26,720 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:36:26,725 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:36:26 BoogieIcfgContainer [2018-06-22 11:36:26,726 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:36:26,726 INFO ]: Toolchain (without parser) took 3423.63 ms. Allocated memory is still 309.3 MB. Free memory was 266.7 MB in the beginning and 206.1 MB in the end (delta: 60.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:26,728 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:36:26,728 INFO ]: ChcToBoogie took 56.52 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 263.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:26,729 INFO ]: Boogie Preprocessor took 44.93 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 262.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:36:26,729 INFO ]: RCFGBuilder took 273.81 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 255.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:26,730 INFO ]: TraceAbstraction took 3034.87 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 206.1 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:26,734 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.52 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 263.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 44.93 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 262.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 273.81 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 255.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3034.87 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 206.1 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 3 SDslu, 74 SDs, 0 SdLazy, 31 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 0.0s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 3 QuantifiedInterpolants, 4504 SizeOfPredicates, 6 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 12/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/twice.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-36-26-752.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/twice.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-36-26-752.csv Received shutdown request...