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/fact_exn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:31:54,265 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:31:54,267 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:31:54,283 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:31:54,283 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:31:54,284 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:31:54,285 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:31:54,287 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:31:54,288 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:31:54,290 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:31:54,291 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:31:54,291 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:31:54,292 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:31:54,295 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:31:54,296 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:31:54,297 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:31:54,298 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:31:54,308 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:31:54,309 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:31:54,310 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:31:54,311 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:31:54,316 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:31:54,316 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:31:54,316 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:31:54,317 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:31:54,318 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:31:54,318 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:31:54,321 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:31:54,322 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:31:54,322 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:31:54,323 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:31:54,323 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:31:54,324 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:31:54,324 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:31:54,329 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:31:54,329 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 11:31:54,349 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:31:54,349 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:31:54,349 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:31:54,349 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:31:54,350 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:31:54,350 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:31:54,351 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:31:54,352 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:31:54,352 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:31:54,352 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:31:54,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:31:54,352 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:31:54,352 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:31:54,353 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:31:54,353 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:31:54,353 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:31:54,353 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:31:54,353 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:31:54,353 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:31:54,354 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:31:54,357 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:31:54,408 INFO ]: Repository-Root is: /tmp [2018-06-22 11:31:54,423 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:31:54,427 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:31:54,429 INFO ]: Initializing SmtParser... [2018-06-22 11:31:54,429 INFO ]: SmtParser initialized [2018-06-22 11:31:54,430 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/fact_exn.smt2 [2018-06-22 11:31:54,431 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 11:31:54,515 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/fact_exn.smt2 unknown [2018-06-22 11:31:54,683 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/fact_exn.smt2 [2018-06-22 11:31:54,688 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:31:54,693 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:31:54,694 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:31:54,694 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:31:54,694 INFO ]: ChcToBoogie initialized [2018-06-22 11:31:54,697 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:31:54" (1/1) ... [2018-06-22 11:31:54,732 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:54 Unit [2018-06-22 11:31:54,732 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:31:54,733 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:31:54,733 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:31:54,733 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:31:54,749 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:54" (1/1) ... [2018-06-22 11:31:54,749 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:54" (1/1) ... [2018-06-22 11:31:54,763 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:54" (1/1) ... [2018-06-22 11:31:54,763 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:54" (1/1) ... [2018-06-22 11:31:54,765 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:54" (1/1) ... [2018-06-22 11:31:54,767 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:54" (1/1) ... [2018-06-22 11:31:54,768 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:54" (1/1) ... [2018-06-22 11:31:54,769 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:31:54,770 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:31:54,770 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:31:54,770 INFO ]: RCFGBuilder initialized [2018-06-22 11:31:54,771 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:54" (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 11:31:54,788 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:31:54,788 INFO ]: Found specification of procedure False [2018-06-22 11:31:54,788 INFO ]: Found implementation of procedure False [2018-06-22 11:31:54,788 INFO ]: Specification and implementation of procedure exnDLRunknownCLN4 given in one single declaration [2018-06-22 11:31:54,788 INFO ]: Found specification of procedure exnDLRunknownCLN4 [2018-06-22 11:31:54,788 INFO ]: Found implementation of procedure exnDLRunknownCLN4 [2018-06-22 11:31:54,788 INFO ]: Specification and implementation of procedure DLRinnerFuncCLN1-exnDLRunknownCLN2 given in one single declaration [2018-06-22 11:31:54,788 INFO ]: Found specification of procedure DLRinnerFuncCLN1-exnDLRunknownCLN2 [2018-06-22 11:31:54,788 INFO ]: Found implementation of procedure DLRinnerFuncCLN1-exnDLRunknownCLN2 [2018-06-22 11:31:54,788 INFO ]: Specification and implementation of procedure factDLRunknownCLN6 given in one single declaration [2018-06-22 11:31:54,788 INFO ]: Found specification of procedure factDLRunknownCLN6 [2018-06-22 11:31:54,788 INFO ]: Found implementation of procedure factDLRunknownCLN6 [2018-06-22 11:31:54,788 INFO ]: Specification and implementation of procedure factDLRunknownCLN7 given in one single declaration [2018-06-22 11:31:54,788 INFO ]: Found specification of procedure factDLRunknownCLN7 [2018-06-22 11:31:54,788 INFO ]: Found implementation of procedure factDLRunknownCLN7 [2018-06-22 11:31:54,788 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:31:54,789 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:31:54,789 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 11:31:55,017 INFO ]: Using library mode [2018-06-22 11:31:55,018 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:31:55 BoogieIcfgContainer [2018-06-22 11:31:55,027 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:31:55,029 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:31:55,029 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:31:55,032 INFO ]: TraceAbstraction initialized [2018-06-22 11:31:55,032 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:31:54" (1/3) ... [2018-06-22 11:31:55,033 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4873a05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:31:55, skipping insertion in model container [2018-06-22 11:31:55,033 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:31:54" (2/3) ... [2018-06-22 11:31:55,033 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4873a05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:31:55, skipping insertion in model container [2018-06-22 11:31:55,034 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:31:55" (3/3) ... [2018-06-22 11:31:55,035 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:31:55,047 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:31:55,054 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:31:55,105 INFO ]: Using default assertion order modulation [2018-06-22 11:31:55,106 INFO ]: Interprodecural is true [2018-06-22 11:31:55,106 INFO ]: Hoare is false [2018-06-22 11:31:55,106 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:31:55,106 INFO ]: Backedges is TWOTRACK [2018-06-22 11:31:55,106 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:31:55,106 INFO ]: Difference is false [2018-06-22 11:31:55,106 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:31:55,106 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:31:55,124 INFO ]: Start isEmpty. Operand 27 states. [2018-06-22 11:31:55,134 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:31:55,134 INFO ]: Found error trace [2018-06-22 11:31:55,135 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:31:55,135 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:31:55,140 INFO ]: Analyzing trace with hash 66098863, now seen corresponding path program 1 times [2018-06-22 11:31:55,142 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:31:55,143 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:31:55,182 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:55,182 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:55,182 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:55,195 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:55,215 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:31:55,217 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:31:55,217 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:31:55,218 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:31:55,228 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:31:55,228 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:31:55,230 INFO ]: Start difference. First operand 27 states. Second operand 2 states. [2018-06-22 11:31:55,248 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:31:55,248 INFO ]: Finished difference Result 25 states and 29 transitions. [2018-06-22 11:31:55,248 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:31:55,250 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:31:55,250 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:31:55,273 INFO ]: With dead ends: 25 [2018-06-22 11:31:55,273 INFO ]: Without dead ends: 25 [2018-06-22 11:31:55,275 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 11:31:55,288 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 11:31:55,307 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 11:31:55,308 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 11:31:55,310 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2018-06-22 11:31:55,311 INFO ]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 5 [2018-06-22 11:31:55,311 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:31:55,311 INFO ]: Abstraction has 25 states and 29 transitions. [2018-06-22 11:31:55,311 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:31:55,311 INFO ]: Start isEmpty. Operand 25 states and 29 transitions. [2018-06-22 11:31:55,312 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:31:55,312 INFO ]: Found error trace [2018-06-22 11:31:55,312 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:31:55,312 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:31:55,312 INFO ]: Analyzing trace with hash -2026756271, now seen corresponding path program 1 times [2018-06-22 11:31:55,312 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:31:55,312 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:31:55,314 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:55,314 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:55,314 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:55,338 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:55,436 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:31:55,436 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:31:55,436 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:31:55,438 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:31:55,442 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:31:55,442 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:31:55,442 INFO ]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2018-06-22 11:31:55,514 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:31:55,514 INFO ]: Finished difference Result 25 states and 28 transitions. [2018-06-22 11:31:55,515 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:31:55,515 INFO ]: Start accepts. Automaton has 4 states. Word has length 17 [2018-06-22 11:31:55,515 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:31:55,515 INFO ]: With dead ends: 25 [2018-06-22 11:31:55,516 INFO ]: Without dead ends: 24 [2018-06-22 11:31:55,516 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:31:55,517 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-22 11:31:55,520 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-06-22 11:31:55,520 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 11:31:55,520 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-06-22 11:31:55,521 INFO ]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2018-06-22 11:31:55,521 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:31:55,521 INFO ]: Abstraction has 24 states and 26 transitions. [2018-06-22 11:31:55,521 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:31:55,521 INFO ]: Start isEmpty. Operand 24 states and 26 transitions. [2018-06-22 11:31:55,522 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:31:55,522 INFO ]: Found error trace [2018-06-22 11:31:55,522 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:31:55,522 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:31:55,522 INFO ]: Analyzing trace with hash -86937801, now seen corresponding path program 1 times [2018-06-22 11:31:55,522 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:31:55,522 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:31:55,523 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:55,523 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:31:55,523 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:31:55,549 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:31:55,818 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:31:55,818 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:31:55,818 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:31:55,818 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:31:55,818 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:31:55,819 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:31:55,819 INFO ]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2018-06-22 11:31:55,899 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:31:55,899 INFO ]: Finished difference Result 18 states and 20 transitions. [2018-06-22 11:31:55,900 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:31:55,900 INFO ]: Start accepts. Automaton has 5 states. Word has length 25 [2018-06-22 11:31:55,900 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:31:55,900 INFO ]: With dead ends: 18 [2018-06-22 11:31:55,900 INFO ]: Without dead ends: 0 [2018-06-22 11:31:55,900 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:31:55,901 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:31:55,901 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:31:55,901 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:31:55,901 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:31:55,901 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 11:31:55,901 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:31:55,901 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:31:55,901 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:31:55,901 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:31:55,901 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:31:55,905 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:31:55 BoogieIcfgContainer [2018-06-22 11:31:55,905 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:31:55,906 INFO ]: Toolchain (without parser) took 1217.74 ms. Allocated memory is still 307.8 MB. Free memory was 263.1 MB in the beginning and 228.1 MB in the end (delta: 35.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:31:55,907 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:31:55,908 INFO ]: ChcToBoogie took 38.26 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:31:55,908 INFO ]: Boogie Preprocessor took 36.99 ms. Allocated memory is still 307.8 MB. Free memory was 260.1 MB in the beginning and 259.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:31:55,909 INFO ]: RCFGBuilder took 256.73 ms. Allocated memory is still 307.8 MB. Free memory was 259.1 MB in the beginning and 251.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:31:55,909 INFO ]: TraceAbstraction took 876.05 ms. Allocated memory is still 307.8 MB. Free memory was 251.1 MB in the beginning and 228.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:31:55,912 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 38.26 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 36.99 ms. Allocated memory is still 307.8 MB. Free memory was 260.1 MB in the beginning and 259.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 256.73 ms. Allocated memory is still 307.8 MB. Free memory was 259.1 MB in the beginning and 251.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 876.05 ms. Allocated memory is still 307.8 MB. Free memory was 251.1 MB in the beginning and 228.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 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 6 procedures, 27 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 0 SDslu, 95 SDs, 0 SdLazy, 12 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 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/fact_exn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-31-55-930.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fact_exn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-31-55-930.csv Received shutdown request...