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/termination/append02.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:38:06,202 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:38:06,204 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:38:06,217 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:38:06,217 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:38:06,218 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:38:06,220 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:38:06,222 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:38:06,224 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:38:06,225 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:38:06,226 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:38:06,227 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:38:06,228 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:38:06,229 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:38:06,230 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:38:06,231 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:38:06,234 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:38:06,236 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:38:06,238 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:38:06,240 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:38:06,241 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:38:06,244 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:38:06,245 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:38:06,245 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:38:06,246 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:38:06,247 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:38:06,248 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:38:06,249 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:38:06,251 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:38:06,251 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:38:06,252 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:38:06,253 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:38:06,254 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:38:06,255 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:38:06,256 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:38:06,256 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 11:38:06,272 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:38:06,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:38:06,273 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:38:06,273 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:38:06,274 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:38:06,275 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:38:06,275 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:38:06,275 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:38:06,276 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:38:06,276 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:38:06,276 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:38:06,276 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:38:06,277 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:38:06,277 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:38:06,277 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:38:06,277 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:38:06,278 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:38:06,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:38:06,278 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:38:06,280 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:38:06,280 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:38:06,336 INFO ]: Repository-Root is: /tmp [2018-06-22 11:38:06,358 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:38:06,363 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:38:06,365 INFO ]: Initializing SmtParser... [2018-06-22 11:38:06,365 INFO ]: SmtParser initialized [2018-06-22 11:38:06,366 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/append02.smt2 [2018-06-22 11:38:06,368 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 11:38:06,469 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/append02.smt2 unknown [2018-06-22 11:38:06,860 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/append02.smt2 [2018-06-22 11:38:06,865 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:38:06,872 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:38:06,872 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:38:06,872 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:38:06,872 INFO ]: ChcToBoogie initialized [2018-06-22 11:38:06,876 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:38:06" (1/1) ... [2018-06-22 11:38:06,932 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:38:06 Unit [2018-06-22 11:38:06,932 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:38:06,933 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:38:06,933 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:38:06,933 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:38:06,955 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:38:06" (1/1) ... [2018-06-22 11:38:06,955 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:38:06" (1/1) ... [2018-06-22 11:38:06,964 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:38:06" (1/1) ... [2018-06-22 11:38:06,965 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:38:06" (1/1) ... [2018-06-22 11:38:06,969 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:38:06" (1/1) ... [2018-06-22 11:38:06,974 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:38:06" (1/1) ... [2018-06-22 11:38:06,975 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:38:06" (1/1) ... [2018-06-22 11:38:06,977 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:38:06,978 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:38:06,978 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:38:06,978 INFO ]: RCFGBuilder initialized [2018-06-22 11:38:06,979 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:38:06" (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 11:38:06,991 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:38:06,991 INFO ]: Found specification of procedure False [2018-06-22 11:38:06,991 INFO ]: Found implementation of procedure False [2018-06-22 11:38:06,991 INFO ]: Specification and implementation of procedure failDLRunknownCLN30 given in one single declaration [2018-06-22 11:38:06,991 INFO ]: Found specification of procedure failDLRunknownCLN30 [2018-06-22 11:38:06,991 INFO ]: Found implementation of procedure failDLRunknownCLN30 [2018-06-22 11:38:06,991 INFO ]: Specification and implementation of procedure append_1030DLRunknownCLN17 given in one single declaration [2018-06-22 11:38:06,991 INFO ]: Found specification of procedure append_1030DLRunknownCLN17 [2018-06-22 11:38:06,991 INFO ]: Found implementation of procedure append_1030DLRunknownCLN17 [2018-06-22 11:38:06,991 INFO ]: Specification and implementation of procedure append_without_checking_1072DLRunknownCLN26 given in one single declaration [2018-06-22 11:38:06,991 INFO ]: Found specification of procedure append_without_checking_1072DLRunknownCLN26 [2018-06-22 11:38:06,991 INFO ]: Found implementation of procedure append_without_checking_1072DLRunknownCLN26 [2018-06-22 11:38:06,991 INFO ]: Specification and implementation of procedure append_1030DLRunknownCLN8 given in one single declaration [2018-06-22 11:38:06,991 INFO ]: Found specification of procedure append_1030DLRunknownCLN8 [2018-06-22 11:38:06,991 INFO ]: Found implementation of procedure append_1030DLRunknownCLN8 [2018-06-22 11:38:06,991 INFO ]: Specification and implementation of procedure botDLRunknownCLN29 given in one single declaration [2018-06-22 11:38:06,992 INFO ]: Found specification of procedure botDLRunknownCLN29 [2018-06-22 11:38:06,992 INFO ]: Found implementation of procedure botDLRunknownCLN29 [2018-06-22 11:38:06,992 INFO ]: Specification and implementation of procedure failDLRunknownCLN31 given in one single declaration [2018-06-22 11:38:06,992 INFO ]: Found specification of procedure failDLRunknownCLN31 [2018-06-22 11:38:06,992 INFO ]: Found implementation of procedure failDLRunknownCLN31 [2018-06-22 11:38:06,992 INFO ]: Specification and implementation of procedure main_1034DLRunknownCLN37 given in one single declaration [2018-06-22 11:38:06,992 INFO ]: Found specification of procedure main_1034DLRunknownCLN37 [2018-06-22 11:38:06,992 INFO ]: Found implementation of procedure main_1034DLRunknownCLN37 [2018-06-22 11:38:06,992 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:38:06,992 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:38:06,992 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 11:38:07,611 INFO ]: Using library mode [2018-06-22 11:38:07,612 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:38:07 BoogieIcfgContainer [2018-06-22 11:38:07,612 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:38:07,614 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:38:07,614 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:38:07,617 INFO ]: TraceAbstraction initialized [2018-06-22 11:38:07,617 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:38:06" (1/3) ... [2018-06-22 11:38:07,618 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3b21ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:38:07, skipping insertion in model container [2018-06-22 11:38:07,618 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:38:06" (2/3) ... [2018-06-22 11:38:07,618 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3b21ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:38:07, skipping insertion in model container [2018-06-22 11:38:07,618 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:38:07" (3/3) ... [2018-06-22 11:38:07,620 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:38:07,633 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:38:07,640 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:38:07,687 INFO ]: Using default assertion order modulation [2018-06-22 11:38:07,687 INFO ]: Interprodecural is true [2018-06-22 11:38:07,687 INFO ]: Hoare is false [2018-06-22 11:38:07,687 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:38:07,687 INFO ]: Backedges is TWOTRACK [2018-06-22 11:38:07,687 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:38:07,687 INFO ]: Difference is false [2018-06-22 11:38:07,687 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:38:07,687 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:38:07,702 INFO ]: Start isEmpty. Operand 41 states. [2018-06-22 11:38:07,713 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:38:07,713 INFO ]: Found error trace [2018-06-22 11:38:07,714 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:38:07,714 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:38:07,719 INFO ]: Analyzing trace with hash 271893247, now seen corresponding path program 1 times [2018-06-22 11:38:07,721 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:38:07,721 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:38:07,764 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:38:07,764 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:38:07,764 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:38:07,780 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:38:07,814 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:38:07,817 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:38:07,817 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:38:07,818 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:38:07,831 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:38:07,831 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:38:07,833 INFO ]: Start difference. First operand 41 states. Second operand 2 states. [2018-06-22 11:38:07,854 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:38:07,855 INFO ]: Finished difference Result 33 states and 37 transitions. [2018-06-22 11:38:07,855 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:38:07,856 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:38:07,856 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:38:07,879 INFO ]: With dead ends: 33 [2018-06-22 11:38:07,879 INFO ]: Without dead ends: 29 [2018-06-22 11:38:07,881 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 11:38:07,898 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 11:38:07,921 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 11:38:07,922 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 11:38:07,923 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-06-22 11:38:07,924 INFO ]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 5 [2018-06-22 11:38:07,924 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:38:07,924 INFO ]: Abstraction has 29 states and 33 transitions. [2018-06-22 11:38:07,924 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:38:07,924 INFO ]: Start isEmpty. Operand 29 states and 33 transitions. [2018-06-22 11:38:07,926 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:38:07,926 INFO ]: Found error trace [2018-06-22 11:38:07,926 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:38:07,926 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:38:07,926 INFO ]: Analyzing trace with hash -2021122345, now seen corresponding path program 1 times [2018-06-22 11:38:07,926 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:38:07,926 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:38:07,927 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:38:07,927 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:38:07,927 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:38:07,973 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:38:08,248 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:38:08,248 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:38:08,248 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:38:08,250 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:38:08,250 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:38:08,250 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:38:08,250 INFO ]: Start difference. First operand 29 states and 33 transitions. Second operand 4 states. [2018-06-22 11:38:08,426 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:38:08,426 INFO ]: Finished difference Result 23 states and 27 transitions. [2018-06-22 11:38:08,427 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:38:08,427 INFO ]: Start accepts. Automaton has 4 states. Word has length 21 [2018-06-22 11:38:08,428 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:38:08,428 INFO ]: With dead ends: 23 [2018-06-22 11:38:08,428 INFO ]: Without dead ends: 0 [2018-06-22 11:38:08,429 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 3 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 11:38:08,429 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:38:08,429 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:38:08,429 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:38:08,429 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:38:08,429 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 11:38:08,429 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:38:08,429 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:38:08,429 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:38:08,429 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:38:08,429 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:38:08,436 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:38:08 BoogieIcfgContainer [2018-06-22 11:38:08,436 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:38:08,437 INFO ]: Toolchain (without parser) took 1571.37 ms. Allocated memory is still 306.2 MB. Free memory was 248.7 MB in the beginning and 202.6 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 3.6 GB. [2018-06-22 11:38:08,439 INFO ]: SmtParser took 0.12 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:38:08,439 INFO ]: ChcToBoogie took 60.79 ms. Allocated memory is still 306.2 MB. Free memory was 247.7 MB in the beginning and 245.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:38:08,446 INFO ]: Boogie Preprocessor took 44.10 ms. Allocated memory is still 306.2 MB. Free memory was 245.8 MB in the beginning and 243.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:38:08,446 INFO ]: RCFGBuilder took 634.28 ms. Allocated memory is still 306.2 MB. Free memory was 243.8 MB in the beginning and 224.7 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:38:08,447 INFO ]: TraceAbstraction took 822.37 ms. Allocated memory is still 306.2 MB. Free memory was 224.7 MB in the beginning and 202.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:38:08,451 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.12 ms. Allocated memory is still 306.2 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 60.79 ms. Allocated memory is still 306.2 MB. Free memory was 247.7 MB in the beginning and 245.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 44.10 ms. Allocated memory is still 306.2 MB. Free memory was 245.8 MB in the beginning and 243.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 634.28 ms. Allocated memory is still 306.2 MB. Free memory was 243.8 MB in the beginning and 224.7 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 822.37 ms. Allocated memory is still 306.2 MB. Free memory was 224.7 MB in the beginning and 202.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 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 9 procedures, 41 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 62 SDtfs, 0 SDslu, 43 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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/append02.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-38-08-462.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/append02.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-38-08-462.csv Received shutdown request...