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/vmt-chc-benchmarks/lustre/durationThm_3_e3_442_e6_113.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 15:02:48,937 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 15:02:48,940 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 15:02:48,950 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 15:02:48,951 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 15:02:48,952 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 15:02:48,953 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 15:02:48,955 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 15:02:48,956 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 15:02:48,957 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 15:02:48,959 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 15:02:48,959 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 15:02:48,960 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 15:02:48,961 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 15:02:48,962 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 15:02:48,962 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 15:02:48,969 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 15:02:48,972 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 15:02:48,973 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 15:02:48,974 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 15:02:48,976 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 15:02:48,978 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 15:02:48,978 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 15:02:48,979 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 15:02:48,979 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 15:02:48,980 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 15:02:48,981 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 15:02:48,982 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 15:02:48,983 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 15:02:48,983 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 15:02:48,983 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 15:02:48,984 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 15:02:48,984 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 15:02:48,985 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 15:02:48,986 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 15:02:48,986 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 15:02:49,004 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 15:02:49,004 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 15:02:49,005 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 15:02:49,005 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 15:02:49,006 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 15:02:49,006 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 15:02:49,006 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 15:02:49,007 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 15:02:49,007 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 15:02:49,007 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 15:02:49,007 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 15:02:49,007 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 15:02:49,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 15:02:49,008 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 15:02:49,008 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 15:02:49,008 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 15:02:49,008 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 15:02:49,009 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 15:02:49,009 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 15:02:49,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 15:02:49,009 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 15:02:49,011 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 15:02:49,011 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 15:02:49,049 INFO ]: Repository-Root is: /tmp [2018-06-25 15:02:49,064 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 15:02:49,071 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 15:02:49,072 INFO ]: Initializing SmtParser... [2018-06-25 15:02:49,073 INFO ]: SmtParser initialized [2018-06-25 15:02:49,073 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_3_e3_442_e6_113.smt2 [2018-06-25 15:02:49,074 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 15:02:49,167 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_3_e3_442_e6_113.smt2 unknown [2018-06-25 15:02:49,444 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_3_e3_442_e6_113.smt2 [2018-06-25 15:02:49,449 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 15:02:49,455 INFO ]: Walking toolchain with 4 elements. [2018-06-25 15:02:49,455 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 15:02:49,455 INFO ]: Initializing ChcToBoogie... [2018-06-25 15:02:49,455 INFO ]: ChcToBoogie initialized [2018-06-25 15:02:49,458 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 03:02:49" (1/1) ... [2018-06-25 15:02:49,517 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:02:49 Unit [2018-06-25 15:02:49,518 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 15:02:49,518 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 15:02:49,518 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 15:02:49,518 INFO ]: Boogie Preprocessor initialized [2018-06-25 15:02:49,539 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:02:49" (1/1) ... [2018-06-25 15:02:49,539 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:02:49" (1/1) ... [2018-06-25 15:02:49,545 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:02:49" (1/1) ... [2018-06-25 15:02:49,546 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:02:49" (1/1) ... [2018-06-25 15:02:49,549 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:02:49" (1/1) ... [2018-06-25 15:02:49,551 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:02:49" (1/1) ... [2018-06-25 15:02:49,552 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:02:49" (1/1) ... [2018-06-25 15:02:49,559 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 15:02:49,560 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 15:02:49,560 INFO ]: Initializing RCFGBuilder... [2018-06-25 15:02:49,560 INFO ]: RCFGBuilder initialized [2018-06-25 15:02:49,561 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:02:49" (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 15:02:49,572 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 15:02:49,572 INFO ]: Found specification of procedure gotoProc [2018-06-25 15:02:49,572 INFO ]: Found implementation of procedure gotoProc [2018-06-25 15:02:49,572 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 15:02:49,572 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 15:02:49,572 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 15:02:49,826 INFO ]: Using library mode [2018-06-25 15:02:49,827 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 03:02:49 BoogieIcfgContainer [2018-06-25 15:02:49,827 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 15:02:49,828 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 15:02:49,828 INFO ]: Initializing TraceAbstraction... [2018-06-25 15:02:49,831 INFO ]: TraceAbstraction initialized [2018-06-25 15:02:49,831 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 03:02:49" (1/3) ... [2018-06-25 15:02:49,832 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621843e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 03:02:49, skipping insertion in model container [2018-06-25 15:02:49,832 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:02:49" (2/3) ... [2018-06-25 15:02:49,832 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621843e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 03:02:49, skipping insertion in model container [2018-06-25 15:02:49,832 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 03:02:49" (3/3) ... [2018-06-25 15:02:49,834 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 15:02:49,843 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 15:02:49,849 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 15:02:49,886 INFO ]: Using default assertion order modulation [2018-06-25 15:02:49,886 INFO ]: Interprodecural is true [2018-06-25 15:02:49,886 INFO ]: Hoare is false [2018-06-25 15:02:49,886 INFO ]: Compute interpolants for FPandBP [2018-06-25 15:02:49,886 INFO ]: Backedges is TWOTRACK [2018-06-25 15:02:49,886 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 15:02:49,886 INFO ]: Difference is false [2018-06-25 15:02:49,886 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 15:02:49,886 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 15:02:49,898 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 15:02:49,909 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 15:02:49,909 INFO ]: Found error trace [2018-06-25 15:02:49,909 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:02:49,910 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:02:49,916 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 15:02:49,919 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:02:49,920 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:02:49,968 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:02:49,968 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:02:49,968 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:02:50,024 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:02:50,151 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:02:50,153 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 15:02:50,153 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 15:02:50,154 INFO ]: Interpolant automaton has 3 states [2018-06-25 15:02:50,164 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 15:02:50,165 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 15:02:50,166 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 15:02:50,205 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:02:50,205 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 15:02:50,206 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 15:02:50,207 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 15:02:50,207 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:02:50,213 INFO ]: With dead ends: 9 [2018-06-25 15:02:50,213 INFO ]: Without dead ends: 9 [2018-06-25 15:02:50,214 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 15:02:50,232 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 15:02:50,255 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 15:02:50,256 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 15:02:50,257 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 15:02:50,258 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 15:02:50,258 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:02:50,258 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 15:02:50,258 INFO ]: Interpolant automaton has 3 states. [2018-06-25 15:02:50,258 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 15:02:50,258 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 15:02:50,258 INFO ]: Found error trace [2018-06-25 15:02:50,258 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:02:50,259 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:02:50,259 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 15:02:50,259 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:02:50,259 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:02:50,260 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:02:50,260 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:02:50,260 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:02:50,317 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:02:50,602 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:02:50,602 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:02:50,602 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 [2018-06-25 15:02:50,617 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:02:50,702 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:02:50,711 INFO ]: Computing forward predicates... [2018-06-25 15:02:50,989 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:02:51,009 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 15:02:51,010 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 15:02:51,010 INFO ]: Interpolant automaton has 5 states [2018-06-25 15:02:51,010 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 15:02:51,010 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 15:02:51,011 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 15:02:51,064 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:02:51,064 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 15:02:51,064 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 15:02:51,064 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 15:02:51,064 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:02:51,065 INFO ]: With dead ends: 11 [2018-06-25 15:02:51,065 INFO ]: Without dead ends: 11 [2018-06-25 15:02:51,065 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 15:02:51,066 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 15:02:51,067 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 15:02:51,067 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 15:02:51,067 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 15:02:51,067 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-25 15:02:51,067 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:02:51,067 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 15:02:51,067 INFO ]: Interpolant automaton has 5 states. [2018-06-25 15:02:51,067 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 15:02:51,068 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 15:02:51,068 INFO ]: Found error trace [2018-06-25 15:02:51,068 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:02:51,069 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:02:51,069 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-25 15:02:51,069 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:02:51,069 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:02:51,070 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:02:51,070 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:02:51,070 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:02:51,177 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:02:51,780 WARN ]: Spent 300.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-06-25 15:02:51,983 WARN ]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-06-25 15:02:52,005 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:02:52,005 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:02:52,005 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 15:02:52,012 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 15:02:52,100 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 15:02:52,100 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:02:52,105 INFO ]: Computing forward predicates... [2018-06-25 15:02:52,242 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:02:52,905 WARN ]: Spent 475.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-06-25 15:02:53,013 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:02:53,817 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:02:53,839 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 15:02:53,839 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-25 15:02:53,839 INFO ]: Interpolant automaton has 9 states [2018-06-25 15:02:53,839 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-25 15:02:53,839 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-25 15:02:53,839 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-25 15:02:54,001 WARN ]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 35 [2018-06-25 15:02:54,189 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2018-06-25 15:02:54,225 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:02:54,225 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-25 15:02:54,225 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 15:02:54,225 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-25 15:02:54,225 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:02:54,226 INFO ]: With dead ends: 12 [2018-06-25 15:02:54,226 INFO ]: Without dead ends: 12 [2018-06-25 15:02:54,226 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-06-25 15:02:54,226 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 15:02:54,227 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-25 15:02:54,227 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-25 15:02:54,228 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-25 15:02:54,228 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-25 15:02:54,228 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:02:54,228 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-25 15:02:54,228 INFO ]: Interpolant automaton has 9 states. [2018-06-25 15:02:54,228 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-25 15:02:54,228 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 15:02:54,228 INFO ]: Found error trace [2018-06-25 15:02:54,228 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:02:54,229 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:02:54,229 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 3 times [2018-06-25 15:02:54,229 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:02:54,229 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:02:54,229 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:02:54,230 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 15:02:54,230 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:02:54,298 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:02:54,576 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 2 [2018-06-25 15:02:54,781 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:02:54,782 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:02:54,782 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 15:02:54,798 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 15:02:54,873 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 15:02:54,873 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:02:54,878 INFO ]: Computing forward predicates... [2018-06-25 15:02:55,927 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2018-06-25 15:02:55,986 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:02:55,997 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:02:56,004 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:02:56,007 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:02:56,010 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:02:56,014 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:02:56,371 WARN ]: Spent 173.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 24 [2018-06-25 15:02:57,248 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:02:57,282 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 15:02:57,282 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-06-25 15:02:57,282 INFO ]: Interpolant automaton has 11 states [2018-06-25 15:02:57,283 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-25 15:02:57,283 INFO ]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-06-25 15:02:57,283 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-06-25 15:02:57,515 WARN ]: Spent 199.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 48 [2018-06-25 15:02:57,724 WARN ]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2018-06-25 15:02:57,828 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:02:57,828 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-25 15:02:57,832 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 15:02:57,832 INFO ]: Start accepts. Automaton has 11 states. Word has length 11 [2018-06-25 15:02:57,832 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:02:57,833 INFO ]: With dead ends: 13 [2018-06-25 15:02:57,833 INFO ]: Without dead ends: 13 [2018-06-25 15:02:57,833 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-06-25 15:02:57,833 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 15:02:57,834 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 15:02:57,834 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 15:02:57,835 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-25 15:02:57,835 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-25 15:02:57,835 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:02:57,835 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-25 15:02:57,835 INFO ]: Interpolant automaton has 11 states. [2018-06-25 15:02:57,835 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-25 15:02:57,835 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 15:02:57,835 INFO ]: Found error trace [2018-06-25 15:02:57,835 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:02:57,835 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:02:57,835 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 4 times [2018-06-25 15:02:57,835 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:02:57,835 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:02:57,836 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:02:57,836 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 15:02:57,836 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:02:57,940 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:02:58,752 WARN ]: Spent 348.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2018-06-25 15:02:59,027 WARN ]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2018-06-25 15:02:59,133 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:02:59,133 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:02:59,133 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 15:02:59,146 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 15:02:59,220 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 15:02:59,220 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:02:59,225 INFO ]: Computing forward predicates... [2018-06-25 15:02:59,343 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:02:59,367 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:01,089 WARN ]: Spent 1.10 s on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-06-25 15:03:01,117 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:01,120 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:02,983 WARN ]: Spent 1.27 s on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2018-06-25 15:03:03,053 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:03,453 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2018-06-25 15:03:06,552 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:03:06,578 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 15:03:06,578 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-25 15:03:06,578 INFO ]: Interpolant automaton has 13 states [2018-06-25 15:03:06,579 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-25 15:03:06,579 INFO ]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-06-25 15:03:06,579 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-06-25 15:03:06,737 WARN ]: Spent 141.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 44 [2018-06-25 15:03:07,154 WARN ]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2018-06-25 15:03:07,252 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:03:07,252 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-25 15:03:07,253 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-25 15:03:07,253 INFO ]: Start accepts. Automaton has 13 states. Word has length 12 [2018-06-25 15:03:07,253 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:03:07,253 INFO ]: With dead ends: 15 [2018-06-25 15:03:07,254 INFO ]: Without dead ends: 15 [2018-06-25 15:03:07,254 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2018-06-25 15:03:07,254 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-25 15:03:07,255 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-25 15:03:07,255 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-25 15:03:07,256 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-25 15:03:07,256 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-25 15:03:07,256 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:03:07,256 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-25 15:03:07,256 INFO ]: Interpolant automaton has 13 states. [2018-06-25 15:03:07,256 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-25 15:03:07,256 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-25 15:03:07,256 INFO ]: Found error trace [2018-06-25 15:03:07,256 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:03:07,256 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:03:07,256 INFO ]: Analyzing trace with hash 726730004, now seen corresponding path program 5 times [2018-06-25 15:03:07,256 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:03:07,256 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:03:07,257 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:03:07,257 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 15:03:07,257 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:03:07,454 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:03:07,849 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 2 [2018-06-25 15:03:08,122 WARN ]: Spent 227.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2018-06-25 15:03:08,256 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2018-06-25 15:03:08,463 WARN ]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2018-06-25 15:03:08,731 WARN ]: Spent 198.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2018-06-25 15:03:09,128 WARN ]: Spent 288.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2018-06-25 15:03:09,291 WARN ]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 39 [2018-06-25 15:03:09,310 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:03:09,311 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:03:09,311 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 15:03:09,316 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-25 15:03:09,421 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-06-25 15:03:09,421 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:03:09,430 INFO ]: Computing forward predicates... [2018-06-25 15:03:09,441 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:03:09,503 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:03:10,626 WARN ]: Spent 198.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-06-25 15:03:10,646 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:03:10,651 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:10,654 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:10,662 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:10,674 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:03:10,679 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:03:11,069 WARN ]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2018-06-25 15:03:11,198 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:11,222 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:11,786 WARN ]: Spent 267.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 47 [2018-06-25 15:03:11,803 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 15:03:11,810 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:03:11,835 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 15:03:13,260 WARN ]: Spent 450.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 43 [2018-06-25 15:03:13,338 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:13,339 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:13,340 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:13,342 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:13,343 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:13,772 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 36 [2018-06-25 15:03:13,798 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 15:03:14,248 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:03:14,272 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 15:03:14,272 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-25 15:03:14,273 INFO ]: Interpolant automaton has 17 states [2018-06-25 15:03:14,273 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-25 15:03:14,273 INFO ]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2018-06-25 15:03:14,273 INFO ]: Start difference. First operand 15 states and 15 transitions. Second operand 17 states. [2018-06-25 15:03:14,567 WARN ]: Spent 240.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 91 [2018-06-25 15:03:14,877 WARN ]: Spent 287.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 114 [2018-06-25 15:03:15,278 WARN ]: Spent 376.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 124 [2018-06-25 15:03:15,503 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2018-06-25 15:03:15,751 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2018-06-25 15:03:16,004 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:03:16,004 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-25 15:03:16,005 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-25 15:03:16,005 INFO ]: Start accepts. Automaton has 17 states. Word has length 14 [2018-06-25 15:03:16,005 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:03:16,005 INFO ]: With dead ends: 12 [2018-06-25 15:03:16,005 INFO ]: Without dead ends: 0 [2018-06-25 15:03:16,005 INFO ]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-06-25 15:03:16,005 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 15:03:16,005 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 15:03:16,005 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 15:03:16,005 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 15:03:16,005 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-06-25 15:03:16,005 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:03:16,005 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 15:03:16,005 INFO ]: Interpolant automaton has 17 states. [2018-06-25 15:03:16,005 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 15:03:16,006 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 15:03:16,009 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 03:03:16 BoogieIcfgContainer [2018-06-25 15:03:16,009 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 15:03:16,010 INFO ]: Toolchain (without parser) took 26560.07 ms. Allocated memory was 307.8 MB in the beginning and 685.8 MB in the end (delta: 378.0 MB). Free memory was 260.3 MB in the beginning and 363.5 MB in the end (delta: -103.2 MB). Peak memory consumption was 274.8 MB. Max. memory is 3.6 GB. [2018-06-25 15:03:16,010 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 15:03:16,011 INFO ]: ChcToBoogie took 62.72 ms. Allocated memory is still 307.8 MB. Free memory was 260.3 MB in the beginning and 258.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 15:03:16,011 INFO ]: Boogie Preprocessor took 41.13 ms. Allocated memory is still 307.8 MB. Free memory was 258.3 MB in the beginning and 256.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 15:03:16,012 INFO ]: RCFGBuilder took 267.06 ms. Allocated memory is still 307.8 MB. Free memory was 256.3 MB in the beginning and 244.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-25 15:03:16,012 INFO ]: TraceAbstraction took 26181.32 ms. Allocated memory was 307.8 MB in the beginning and 685.8 MB in the end (delta: 378.0 MB). Free memory was 244.3 MB in the beginning and 363.5 MB in the end (delta: -119.1 MB). Peak memory consumption was 258.9 MB. Max. memory is 3.6 GB. [2018-06-25 15:03:16,015 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 272.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.72 ms. Allocated memory is still 307.8 MB. Free memory was 260.3 MB in the beginning and 258.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.13 ms. Allocated memory is still 307.8 MB. Free memory was 258.3 MB in the beginning and 256.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 267.06 ms. Allocated memory is still 307.8 MB. Free memory was 256.3 MB in the beginning and 244.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 26181.32 ms. Allocated memory was 307.8 MB in the beginning and 685.8 MB in the end (delta: 378.0 MB). Free memory was 244.3 MB in the beginning and 363.5 MB in the end (delta: -119.1 MB). Peak memory consumption was 258.9 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, 10 locations, 1 error locations. SAFE Result, 26.1s OverallTime, 6 OverallIterations, 7 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 0 SDslu, 144 SDs, 0 SdLazy, 126 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=5, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 21.3s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 28931 SizeOfPredicates, 20 NumberOfNonLiveVariables, 2120 ConjunctsInSsa, 509 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/120 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/durationThm_3_e3_442_e6_113.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_15-03-16-025.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/durationThm_3_e3_442_e6_113.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_15-03-16-025.csv Received shutdown request...