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/metros_3_e4_987_e2_80.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:46:04,976 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:46:04,978 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:46:04,989 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:46:04,989 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:46:04,992 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:46:04,993 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:46:04,995 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:46:04,996 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:46:04,997 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:46:04,998 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:46:04,998 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:46:05,000 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:46:05,001 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:46:05,001 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:46:05,002 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:46:05,004 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:46:05,006 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:46:05,007 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:46:05,008 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:46:05,010 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:46:05,012 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:46:05,012 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:46:05,012 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:46:05,013 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:46:05,014 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:46:05,015 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:46:05,016 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:46:05,017 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:46:05,017 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:46:05,018 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:46:05,018 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:46:05,019 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:46:05,020 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:46:05,020 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:46:05,021 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:46:05,034 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:46:05,034 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:46:05,035 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:46:05,035 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:46:05,036 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:46:05,036 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:46:05,036 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:46:05,037 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:46:05,037 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:46:05,037 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:46:05,037 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:46:05,037 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:46:05,038 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:46:05,038 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:46:05,038 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:46:05,038 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:46:05,039 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:46:05,039 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:46:05,039 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:46:05,039 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:46:05,039 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:46:05,041 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:46:05,041 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:46:05,077 INFO ]: Repository-Root is: /tmp [2018-06-25 16:46:05,095 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:46:05,100 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:46:05,101 INFO ]: Initializing SmtParser... [2018-06-25 16:46:05,101 INFO ]: SmtParser initialized [2018-06-25 16:46:05,102 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e4_987_e2_80.smt2 [2018-06-25 16:46:05,103 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 16:46:05,191 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e4_987_e2_80.smt2 unknown [2018-06-25 16:46:05,624 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e4_987_e2_80.smt2 [2018-06-25 16:46:05,628 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:46:05,633 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:46:05,634 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:46:05,634 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:46:05,634 INFO ]: ChcToBoogie initialized [2018-06-25 16:46:05,637 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:46:05" (1/1) ... [2018-06-25 16:46:05,703 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:46:05 Unit [2018-06-25 16:46:05,703 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:46:05,704 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:46:05,704 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:46:05,704 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:46:05,718 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:46:05" (1/1) ... [2018-06-25 16:46:05,719 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:46:05" (1/1) ... [2018-06-25 16:46:05,726 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:46:05" (1/1) ... [2018-06-25 16:46:05,726 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:46:05" (1/1) ... [2018-06-25 16:46:05,736 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:46:05" (1/1) ... [2018-06-25 16:46:05,738 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:46:05" (1/1) ... [2018-06-25 16:46:05,740 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:46:05" (1/1) ... [2018-06-25 16:46:05,743 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:46:05,744 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:46:05,744 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:46:05,744 INFO ]: RCFGBuilder initialized [2018-06-25 16:46:05,745 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:46:05" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:46:05,764 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:46:05,764 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:46:05,764 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:46:05,764 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:46:05,764 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:46:05,764 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 16:46:06,179 INFO ]: Using library mode [2018-06-25 16:46:06,180 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:46:06 BoogieIcfgContainer [2018-06-25 16:46:06,185 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:46:06,187 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:46:06,187 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:46:06,190 INFO ]: TraceAbstraction initialized [2018-06-25 16:46:06,190 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:46:05" (1/3) ... [2018-06-25 16:46:06,192 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23defe17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:46:06, skipping insertion in model container [2018-06-25 16:46:06,192 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:46:05" (2/3) ... [2018-06-25 16:46:06,192 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23defe17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:46:06, skipping insertion in model container [2018-06-25 16:46:06,192 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:46:06" (3/3) ... [2018-06-25 16:46:06,194 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:46:06,203 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:46:06,211 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:46:06,263 INFO ]: Using default assertion order modulation [2018-06-25 16:46:06,264 INFO ]: Interprodecural is true [2018-06-25 16:46:06,264 INFO ]: Hoare is false [2018-06-25 16:46:06,264 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:46:06,264 INFO ]: Backedges is TWOTRACK [2018-06-25 16:46:06,264 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:46:06,264 INFO ]: Difference is false [2018-06-25 16:46:06,264 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:46:06,264 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:46:06,281 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:46:06,293 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:46:06,294 INFO ]: Found error trace [2018-06-25 16:46:06,294 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:46:06,295 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:46:06,299 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 16:46:06,302 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:46:06,303 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:46:06,351 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:46:06,351 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:46:06,351 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:46:06,441 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:46:06,576 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:46:06,579 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:46:06,579 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:46:06,581 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:46:06,596 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:46:06,596 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:46:06,600 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:46:06,676 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:46:06,676 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:46:06,677 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:46:06,678 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:46:06,678 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:46:06,686 INFO ]: With dead ends: 9 [2018-06-25 16:46:06,686 INFO ]: Without dead ends: 9 [2018-06-25 16:46:06,688 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 16:46:06,703 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:46:06,731 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:46:06,732 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:46:06,732 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:46:06,734 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:46:06,734 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:46:06,734 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:46:06,734 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:46:06,734 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:46:06,734 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:46:06,734 INFO ]: Found error trace [2018-06-25 16:46:06,734 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:46:06,734 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:46:06,735 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 16:46:06,735 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:46:06,735 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:46:06,735 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:46:06,735 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:46:06,736 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:46:06,847 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:46:07,158 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:46:07,158 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:46:07,159 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 16:46:07,173 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:46:07,315 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:46:07,328 INFO ]: Computing forward predicates... [2018-06-25 16:46:07,579 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:46:07,615 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:46:07,615 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-25 16:46:07,615 INFO ]: Interpolant automaton has 6 states [2018-06-25 16:46:07,615 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 16:46:07,615 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-25 16:46:07,616 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-25 16:46:07,904 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:46:07,904 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 16:46:07,905 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 16:46:07,905 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-25 16:46:07,905 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:46:07,905 INFO ]: With dead ends: 11 [2018-06-25 16:46:07,905 INFO ]: Without dead ends: 11 [2018-06-25 16:46:07,906 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-25 16:46:07,906 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 16:46:07,907 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 16:46:07,907 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 16:46:07,908 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 16:46:07,908 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-25 16:46:07,908 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:46:07,908 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 16:46:07,908 INFO ]: Interpolant automaton has 6 states. [2018-06-25 16:46:07,908 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 16:46:07,908 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 16:46:07,908 INFO ]: Found error trace [2018-06-25 16:46:07,908 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:46:07,908 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:46:07,909 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-25 16:46:07,909 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:46:07,909 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:46:07,909 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:46:07,909 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:46:07,909 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:46:08,054 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:46:09,038 WARN ]: Spent 691.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 17 [2018-06-25 16:46:09,225 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 21 [2018-06-25 16:46:09,242 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:46:09,242 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:46:09,242 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 16:46:09,249 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 16:46:09,463 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:46:09,463 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:46:09,470 INFO ]: Computing forward predicates... [2018-06-25 16:46:10,115 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:46:10,136 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:46:10,136 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-25 16:46:10,136 INFO ]: Interpolant automaton has 10 states [2018-06-25 16:46:10,136 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 16:46:10,136 INFO ]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-25 16:46:10,137 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-25 16:46:10,285 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:46:10,285 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-25 16:46:10,285 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 16:46:10,285 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-25 16:46:10,285 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:46:10,286 INFO ]: With dead ends: 13 [2018-06-25 16:46:10,286 INFO ]: Without dead ends: 13 [2018-06-25 16:46:10,286 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-06-25 16:46:10,286 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 16:46:10,287 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 16:46:10,287 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 16:46:10,288 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-25 16:46:10,288 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-25 16:46:10,288 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:46:10,288 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-25 16:46:10,288 INFO ]: Interpolant automaton has 10 states. [2018-06-25 16:46:10,288 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-25 16:46:10,288 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 16:46:10,288 INFO ]: Found error trace [2018-06-25 16:46:10,288 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:46:10,289 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:46:10,289 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-25 16:46:10,289 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:46:10,289 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:46:10,290 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:46:10,290 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:46:10,290 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:46:10,536 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:46:11,893 WARN ]: Spent 655.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 17 [2018-06-25 16:46:12,626 WARN ]: Spent 685.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 25 [2018-06-25 16:46:13,804 WARN ]: Spent 1.03 s on a formula simplification. DAG size of input: 374 DAG size of output: 22 [2018-06-25 16:46:15,574 WARN ]: Spent 1.71 s on a formula simplification. DAG size of input: 207 DAG size of output: 36 [2018-06-25 16:46:15,822 WARN ]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-25 16:46:15,824 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:46:15,824 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:46:15,824 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 16:46:15,843 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 16:46:16,089 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-25 16:46:16,089 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:46:16,097 INFO ]: Computing forward predicates... [2018-06-25 16:46:16,337 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:46:16,359 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:46:16,359 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-25 16:46:16,359 INFO ]: Interpolant automaton has 14 states [2018-06-25 16:46:16,360 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-25 16:46:16,360 INFO ]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2018-06-25 16:46:16,360 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-25 16:46:16,666 WARN ]: Spent 237.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-06-25 16:46:16,942 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:46:16,942 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-25 16:46:16,945 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-25 16:46:16,945 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-25 16:46:16,945 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:46:16,946 INFO ]: With dead ends: 15 [2018-06-25 16:46:16,946 INFO ]: Without dead ends: 15 [2018-06-25 16:46:16,946 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2018-06-25 16:46:16,946 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-25 16:46:16,948 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-25 16:46:16,948 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-25 16:46:16,948 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-25 16:46:16,948 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-25 16:46:16,948 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:46:16,948 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-25 16:46:16,948 INFO ]: Interpolant automaton has 14 states. [2018-06-25 16:46:16,948 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-25 16:46:16,949 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-25 16:46:16,949 INFO ]: Found error trace [2018-06-25 16:46:16,949 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:46:16,949 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:46:16,949 INFO ]: Analyzing trace with hash -414382217, now seen corresponding path program 4 times [2018-06-25 16:46:16,949 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:46:16,949 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:46:16,950 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:46:16,950 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:46:16,950 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:46:18,199 INFO ]: Conjunction of SSA is unsat Received shutdown request... [2018-06-25 16:47:12,413 WARN ]: Removed 2 from assertion stack [2018-06-25 16:47:12,413 WARN ]: Verification canceled [2018-06-25 16:47:12,417 WARN ]: Timeout [2018-06-25 16:47:12,417 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:47:12 BoogieIcfgContainer [2018-06-25 16:47:12,417 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:47:12,417 INFO ]: Toolchain (without parser) took 66788.92 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 248.2 MB in the beginning and 187.6 MB in the end (delta: 60.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 16:47:12,418 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:47:12,418 INFO ]: ChcToBoogie took 69.34 ms. Allocated memory is still 308.8 MB. Free memory was 248.2 MB in the beginning and 245.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:47:12,419 INFO ]: Boogie Preprocessor took 39.84 ms. Allocated memory is still 308.8 MB. Free memory was 245.2 MB in the beginning and 244.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-25 16:47:12,419 INFO ]: RCFGBuilder took 441.19 ms. Allocated memory is still 308.8 MB. Free memory was 244.2 MB in the beginning and 212.1 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 3.6 GB. [2018-06-25 16:47:12,422 INFO ]: TraceAbstraction took 66230.13 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 212.1 MB in the beginning and 187.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 16:47:12,425 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 308.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 69.34 ms. Allocated memory is still 308.8 MB. Free memory was 248.2 MB in the beginning and 245.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 39.84 ms. Allocated memory is still 308.8 MB. Free memory was 245.2 MB in the beginning and 244.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 441.19 ms. Allocated memory is still 308.8 MB. Free memory was 244.2 MB in the beginning and 212.1 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 66230.13 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 212.1 MB in the beginning and 187.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 15 with TraceHistMax 7, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 2688. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 66.1s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 95 SDs, 0 SdLazy, 68 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=4, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 3337 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2895 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_3_e4_987_e2_80.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-47-12-437.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_3_e4_987_e2_80.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_16-47-12-437.csv Completed graceful shutdown