java -Xss4m -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_Goto.epf -i /storage/chc-comp/hopv/lia/termination/append02.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:36:03,946 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:36:03,950 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:36:03,961 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:36:03,961 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:36:03,962 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:36:03,963 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:36:03,965 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:36:03,967 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:36:03,967 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:36:03,969 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:36:03,969 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:36:03,970 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:36:03,971 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:36:03,973 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:36:03,974 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:36:03,976 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:36:03,985 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:36:03,986 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:36:03,987 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:36:03,988 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:36:03,993 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:36:03,993 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:36:03,995 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:36:03,996 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:36:03,997 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:36:03,997 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:36:03,998 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:36:04,003 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:36:04,003 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:36:04,004 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:36:04,004 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:36:04,004 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:36:04,005 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:36:04,006 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:36:04,007 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:36:04,023 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:36:04,023 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:36:04,023 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:36:04,024 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:36:04,024 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:36:04,025 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:36:04,025 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:36:04,025 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:36:04,025 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:36:04,026 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:36:04,026 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:36:04,026 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:36:04,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:36:04,026 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:36:04,027 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:36:04,027 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:36:04,027 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:36:04,027 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:36:04,027 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:36:04,027 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:36:04,028 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:36:04,030 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:36:04,030 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:36:04,068 INFO ]: Repository-Root is: /tmp [2018-06-25 09:36:04,088 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:36:04,096 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:36:04,097 INFO ]: Initializing SmtParser... [2018-06-25 09:36:04,097 INFO ]: SmtParser initialized [2018-06-25 09:36:04,098 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/append02.smt2 [2018-06-25 09:36:04,099 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 [2018-06-25 09:36:04,186 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/append02.smt2 unknown [2018-06-25 09:36:04,655 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/append02.smt2 [2018-06-25 09:36:04,660 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:36:04,666 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:36:04,666 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:36:04,666 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:36:04,666 INFO ]: ChcToBoogie initialized [2018-06-25 09:36:04,670 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:36:04" (1/1) ... [2018-06-25 09:36:04,734 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:04 Unit [2018-06-25 09:36:04,734 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:36:04,735 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:36:04,735 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:36:04,735 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:36:04,754 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:04" (1/1) ... [2018-06-25 09:36:04,754 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:04" (1/1) ... [2018-06-25 09:36:04,762 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:04" (1/1) ... [2018-06-25 09:36:04,762 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:04" (1/1) ... [2018-06-25 09:36:04,775 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:04" (1/1) ... [2018-06-25 09:36:04,777 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:04" (1/1) ... [2018-06-25 09:36:04,779 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:04" (1/1) ... [2018-06-25 09:36:04,790 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:36:04,791 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:36:04,791 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:36:04,791 INFO ]: RCFGBuilder initialized [2018-06-25 09:36:04,792 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:04" (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) [2018-06-25 09:36:04,804 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:36:04,804 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:36:04,804 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:36:04,804 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:36:04,804 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:36:04,804 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 [2018-06-25 09:36:05,329 INFO ]: Using library mode [2018-06-25 09:36:05,329 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:36:05 BoogieIcfgContainer [2018-06-25 09:36:05,330 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:36:05,331 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:36:05,331 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:36:05,334 INFO ]: TraceAbstraction initialized [2018-06-25 09:36:05,334 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:36:04" (1/3) ... [2018-06-25 09:36:05,334 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e02a75d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:36:05, skipping insertion in model container [2018-06-25 09:36:05,335 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:04" (2/3) ... [2018-06-25 09:36:05,335 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e02a75d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:36:05, skipping insertion in model container [2018-06-25 09:36:05,335 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:36:05" (3/3) ... [2018-06-25 09:36:05,336 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:36:05,344 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:36:05,354 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:36:05,403 INFO ]: Using default assertion order modulation [2018-06-25 09:36:05,404 INFO ]: Interprodecural is true [2018-06-25 09:36:05,404 INFO ]: Hoare is false [2018-06-25 09:36:05,404 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:36:05,404 INFO ]: Backedges is TWOTRACK [2018-06-25 09:36:05,404 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:36:05,404 INFO ]: Difference is false [2018-06-25 09:36:05,404 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:36:05,404 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:36:05,422 INFO ]: Start isEmpty. Operand 24 states. [2018-06-25 09:36:05,436 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 09:36:05,437 INFO ]: Found error trace [2018-06-25 09:36:05,437 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:36:05,438 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:36:05,443 INFO ]: Analyzing trace with hash 937774839, now seen corresponding path program 1 times [2018-06-25 09:36:05,446 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:36:05,446 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:36:05,494 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:05,494 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:36:05,494 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:05,525 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:36:05,566 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:36:05,570 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:36:05,570 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 09:36:05,572 INFO ]: Interpolant automaton has 2 states [2018-06-25 09:36:05,586 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 09:36:05,586 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:36:05,588 INFO ]: Start difference. First operand 24 states. Second operand 2 states. [2018-06-25 09:36:05,607 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:36:05,607 INFO ]: Finished difference Result 22 states and 29 transitions. [2018-06-25 09:36:05,607 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 09:36:05,609 INFO ]: Start accepts. Automaton has 2 states. Word has length 7 [2018-06-25 09:36:05,609 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:36:05,618 INFO ]: With dead ends: 22 [2018-06-25 09:36:05,618 INFO ]: Without dead ends: 20 [2018-06-25 09:36:05,619 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 [2018-06-25 09:36:05,633 INFO ]: Start minimizeSevpa. Operand 20 states. [2018-06-25 09:36:05,659 INFO ]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-06-25 09:36:05,660 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-25 09:36:05,661 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2018-06-25 09:36:05,662 INFO ]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 7 [2018-06-25 09:36:05,662 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:36:05,663 INFO ]: Abstraction has 20 states and 26 transitions. [2018-06-25 09:36:05,663 INFO ]: Interpolant automaton has 2 states. [2018-06-25 09:36:05,663 INFO ]: Start isEmpty. Operand 20 states and 26 transitions. [2018-06-25 09:36:05,666 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 09:36:05,666 INFO ]: Found error trace [2018-06-25 09:36:05,666 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:36:05,666 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:36:05,666 INFO ]: Analyzing trace with hash 1911133131, now seen corresponding path program 1 times [2018-06-25 09:36:05,666 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:36:05,666 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:36:05,667 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:05,667 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:36:05,667 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:05,697 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:36:05,829 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:36:05,829 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:36:05,829 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:36:05,830 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:36:05,831 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:36:05,831 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:36:05,831 INFO ]: Start difference. First operand 20 states and 26 transitions. Second operand 4 states. [2018-06-25 09:36:06,099 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:36:06,099 INFO ]: Finished difference Result 33 states and 41 transitions. [2018-06-25 09:36:06,100 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:36:06,100 INFO ]: Start accepts. Automaton has 4 states. Word has length 12 [2018-06-25 09:36:06,100 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:36:06,101 INFO ]: With dead ends: 33 [2018-06-25 09:36:06,102 INFO ]: Without dead ends: 33 [2018-06-25 09:36:06,102 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:36:06,102 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-25 09:36:06,109 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-06-25 09:36:06,109 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-25 09:36:06,111 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2018-06-25 09:36:06,111 INFO ]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 12 [2018-06-25 09:36:06,111 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:36:06,111 INFO ]: Abstraction has 33 states and 41 transitions. [2018-06-25 09:36:06,111 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:36:06,111 INFO ]: Start isEmpty. Operand 33 states and 41 transitions. [2018-06-25 09:36:06,112 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-25 09:36:06,112 INFO ]: Found error trace [2018-06-25 09:36:06,112 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:36:06,112 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:36:06,112 INFO ]: Analyzing trace with hash -1662944044, now seen corresponding path program 1 times [2018-06-25 09:36:06,112 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:36:06,112 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:36:06,113 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:06,113 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:36:06,113 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:06,141 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:36:06,233 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:36:06,233 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:36:06,233 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 09:36:06,233 INFO ]: Interpolant automaton has 3 states [2018-06-25 09:36:06,233 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 09:36:06,233 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 09:36:06,234 INFO ]: Start difference. First operand 33 states and 41 transitions. Second operand 3 states. [2018-06-25 09:36:06,274 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:36:06,274 INFO ]: Finished difference Result 26 states and 31 transitions. [2018-06-25 09:36:06,274 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 09:36:06,274 INFO ]: Start accepts. Automaton has 3 states. Word has length 13 [2018-06-25 09:36:06,275 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:36:06,275 INFO ]: With dead ends: 26 [2018-06-25 09:36:06,275 INFO ]: Without dead ends: 0 [2018-06-25 09:36:06,275 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 09:36:06,275 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:36:06,275 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:36:06,275 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:36:06,275 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:36:06,275 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-06-25 09:36:06,275 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:36:06,275 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:36:06,275 INFO ]: Interpolant automaton has 3 states. [2018-06-25 09:36:06,275 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:36:06,275 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:36:06,280 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:36:06 BoogieIcfgContainer [2018-06-25 09:36:06,280 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:36:06,281 INFO ]: Toolchain (without parser) took 1620.40 ms. Allocated memory is still 301.5 MB. Free memory was 241.9 MB in the beginning and 189.8 MB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 3.6 GB. [2018-06-25 09:36:06,282 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 301.5 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:36:06,282 INFO ]: ChcToBoogie took 68.00 ms. Allocated memory is still 301.5 MB. Free memory was 240.9 MB in the beginning and 238.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:36:06,283 INFO ]: Boogie Preprocessor took 55.67 ms. Allocated memory is still 301.5 MB. Free memory was 238.9 MB in the beginning and 236.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:36:06,283 INFO ]: RCFGBuilder took 538.89 ms. Allocated memory is still 301.5 MB. Free memory was 236.9 MB in the beginning and 219.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. [2018-06-25 09:36:06,284 INFO ]: TraceAbstraction took 949.24 ms. Allocated memory is still 301.5 MB. Free memory was 219.8 MB in the beginning and 189.8 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:36:06,288 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 301.5 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 68.00 ms. Allocated memory is still 301.5 MB. Free memory was 240.9 MB in the beginning and 238.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 55.67 ms. Allocated memory is still 301.5 MB. Free memory was 238.9 MB in the beginning and 236.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 538.89 ms. Allocated memory is still 301.5 MB. Free memory was 236.9 MB in the beginning and 219.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 949.24 ms. Allocated memory is still 301.5 MB. Free memory was 219.8 MB in the beginning and 189.8 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 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 2 procedures, 24 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 30 SDslu, 29 SDs, 0 SdLazy, 30 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, 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, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 607 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-36-06-306.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/append02.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-36-06-306.csv Received shutdown request...