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_1_e1_846_e1_1317.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:25:58,962 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:25:58,965 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:25:58,977 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:25:58,978 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:25:58,978 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:25:58,980 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:25:58,984 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:25:58,985 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:25:58,987 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:25:58,987 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:25:58,988 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:25:58,988 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:25:58,990 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:25:58,990 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:25:58,993 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:25:58,995 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:25:58,998 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:25:58,999 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:25:59,000 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:25:59,002 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:25:59,004 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:25:59,004 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:25:59,005 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:25:59,005 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:25:59,006 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:25:59,007 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:25:59,008 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:25:59,009 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:25:59,009 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:25:59,010 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:25:59,011 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:25:59,011 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:25:59,012 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:25:59,012 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:25:59,013 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:25:59,037 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:25:59,037 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:25:59,038 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:25:59,038 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:25:59,039 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:25:59,039 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:25:59,039 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:25:59,039 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:25:59,040 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:25:59,040 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:25:59,040 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:25:59,040 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:25:59,041 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:25:59,041 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:25:59,041 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:25:59,041 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:25:59,041 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:25:59,041 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:25:59,042 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:25:59,042 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:25:59,042 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:25:59,043 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:25:59,045 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:25:59,094 INFO ]: Repository-Root is: /tmp [2018-06-25 16:25:59,112 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:25:59,119 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:25:59,121 INFO ]: Initializing SmtParser... [2018-06-25 16:25:59,121 INFO ]: SmtParser initialized [2018-06-25 16:25:59,122 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e1_846_e1_1317.smt2 [2018-06-25 16:25:59,123 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 16:25:59,219 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e1_846_e1_1317.smt2 unknown [2018-06-25 16:25:59,682 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e1_846_e1_1317.smt2 [2018-06-25 16:25:59,693 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:25:59,699 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:25:59,699 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:25:59,699 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:25:59,699 INFO ]: ChcToBoogie initialized [2018-06-25 16:25:59,712 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:25:59" (1/1) ... [2018-06-25 16:25:59,810 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:59 Unit [2018-06-25 16:25:59,810 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:25:59,811 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:25:59,811 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:25:59,811 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:25:59,838 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:59" (1/1) ... [2018-06-25 16:25:59,838 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:59" (1/1) ... [2018-06-25 16:25:59,850 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:59" (1/1) ... [2018-06-25 16:25:59,850 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:59" (1/1) ... [2018-06-25 16:25:59,863 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:59" (1/1) ... [2018-06-25 16:25:59,864 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:59" (1/1) ... [2018-06-25 16:25:59,866 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:59" (1/1) ... [2018-06-25 16:25:59,872 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:25:59,872 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:25:59,873 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:25:59,873 INFO ]: RCFGBuilder initialized [2018-06-25 16:25:59,873 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:59" (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 16:25:59,884 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:25:59,884 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:25:59,884 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:25:59,884 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:25:59,884 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:25:59,884 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 16:26:00,331 INFO ]: Using library mode [2018-06-25 16:26:00,332 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:26:00 BoogieIcfgContainer [2018-06-25 16:26:00,332 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:26:00,333 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:26:00,333 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:26:00,338 INFO ]: TraceAbstraction initialized [2018-06-25 16:26:00,338 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:25:59" (1/3) ... [2018-06-25 16:26:00,339 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f69455a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:26:00, skipping insertion in model container [2018-06-25 16:26:00,339 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:25:59" (2/3) ... [2018-06-25 16:26:00,339 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f69455a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:26:00, skipping insertion in model container [2018-06-25 16:26:00,339 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:26:00" (3/3) ... [2018-06-25 16:26:00,342 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:26:00,352 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:26:00,360 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:26:00,410 INFO ]: Using default assertion order modulation [2018-06-25 16:26:00,410 INFO ]: Interprodecural is true [2018-06-25 16:26:00,410 INFO ]: Hoare is false [2018-06-25 16:26:00,410 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:26:00,410 INFO ]: Backedges is TWOTRACK [2018-06-25 16:26:00,410 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:26:00,410 INFO ]: Difference is false [2018-06-25 16:26:00,411 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:26:00,411 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:26:00,427 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:26:00,443 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:26:00,443 INFO ]: Found error trace [2018-06-25 16:26:00,444 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:26:00,444 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:26:00,449 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 16:26:00,452 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:26:00,452 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:26:00,499 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:26:00,499 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:26:00,500 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:26:00,613 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:26:00,778 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:26:00,781 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:26:00,781 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:26:00,783 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:26:00,798 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:26:00,799 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:26:00,802 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:26:00,900 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:26:00,902 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:26:00,902 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:26:00,904 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:26:00,904 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:26:00,915 INFO ]: With dead ends: 9 [2018-06-25 16:26:00,915 INFO ]: Without dead ends: 9 [2018-06-25 16:26:00,917 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 16:26:00,932 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:26:00,961 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:26:00,962 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:26:00,962 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:26:00,968 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:26:00,969 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:26:00,969 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:26:00,969 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:26:00,969 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:26:00,969 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:26:00,969 INFO ]: Found error trace [2018-06-25 16:26:00,969 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:26:00,969 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:26:00,969 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 16:26:00,969 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:26:00,969 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:26:00,970 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:26:00,970 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:26:00,970 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:26:01,080 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:26:01,243 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:26:01,243 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:26:01,243 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 16:26:01,256 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:26:01,403 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:26:01,415 INFO ]: Computing forward predicates... [2018-06-25 16:26:01,591 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:26:01,623 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:26:01,623 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 16:26:01,624 INFO ]: Interpolant automaton has 5 states [2018-06-25 16:26:01,624 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 16:26:01,624 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:26:01,624 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 16:26:01,736 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:26:01,736 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 16:26:01,738 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 16:26:01,738 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 16:26:01,738 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:26:01,738 INFO ]: With dead ends: 10 [2018-06-25 16:26:01,738 INFO ]: Without dead ends: 10 [2018-06-25 16:26:01,739 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:26:01,739 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 16:26:01,740 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 16:26:01,740 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 16:26:01,740 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 16:26:01,740 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 16:26:01,740 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:26:01,741 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 16:26:01,741 INFO ]: Interpolant automaton has 5 states. [2018-06-25 16:26:01,741 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 16:26:01,741 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 16:26:01,741 INFO ]: Found error trace [2018-06-25 16:26:01,741 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:26:01,741 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:26:01,741 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 16:26:01,741 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:26:01,741 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:26:01,743 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:26:01,743 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:26:01,743 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:26:01,867 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:26:02,078 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:26:02,078 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:26:02,078 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 16:26:02,084 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 16:26:02,239 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:26:02,239 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:26:02,245 INFO ]: Computing forward predicates... [2018-06-25 16:26:03,012 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:26:03,034 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:26:03,035 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-25 16:26:03,035 INFO ]: Interpolant automaton has 8 states [2018-06-25 16:26:03,035 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 16:26:03,035 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-25 16:26:03,035 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-25 16:26:03,260 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:26:03,260 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 16:26:03,280 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 16:26:03,280 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-25 16:26:03,280 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:26:03,280 INFO ]: With dead ends: 11 [2018-06-25 16:26:03,280 INFO ]: Without dead ends: 11 [2018-06-25 16:26:03,281 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-25 16:26:03,281 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 16:26:03,282 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 16:26:03,282 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 16:26:03,282 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 16:26:03,282 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 16:26:03,282 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:26:03,282 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 16:26:03,282 INFO ]: Interpolant automaton has 8 states. [2018-06-25 16:26:03,282 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 16:26:03,283 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 16:26:03,283 INFO ]: Found error trace [2018-06-25 16:26:03,283 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:26:03,283 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:26:03,283 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-25 16:26:03,283 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:26:03,283 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:26:03,284 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:26:03,284 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:26:03,284 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:26:03,380 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:26:03,846 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:26:03,846 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:26:03,846 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 16:26:03,852 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 16:26:04,039 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 16:26:04,039 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:26:04,048 INFO ]: Computing forward predicates... [2018-06-25 16:26:04,439 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:26:05,176 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:26:05,831 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 16:26:06,070 WARN ]: Simplifying disjunction of 24192 conjuctions. This might take some time... Received shutdown request... [2018-06-25 16:27:19,104 INFO ]: Timeout while computing interpolants [2018-06-25 16:27:19,305 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:27:19,305 WARN ]: Verification canceled [2018-06-25 16:27:19,309 WARN ]: Timeout [2018-06-25 16:27:19,309 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:27:19 BoogieIcfgContainer [2018-06-25 16:27:19,309 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:27:19,310 INFO ]: Toolchain (without parser) took 79616.33 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 242.6 MB in the beginning and 399.6 MB in the end (delta: -157.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-25 16:27:19,312 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 302.0 MB. Free memory is still 267.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:27:19,312 INFO ]: ChcToBoogie took 111.62 ms. Allocated memory is still 302.0 MB. Free memory was 242.6 MB in the beginning and 239.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:27:19,312 INFO ]: Boogie Preprocessor took 60.93 ms. Allocated memory is still 302.0 MB. Free memory was 239.6 MB in the beginning and 238.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-25 16:27:19,313 INFO ]: RCFGBuilder took 459.42 ms. Allocated memory is still 302.0 MB. Free memory was 238.6 MB in the beginning and 206.2 MB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 3.6 GB. [2018-06-25 16:27:19,313 INFO ]: TraceAbstraction took 78976.07 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 205.2 MB in the beginning and 399.6 MB in the end (delta: -194.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-25 16:27:19,323 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 302.0 MB. Free memory is still 267.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 111.62 ms. Allocated memory is still 302.0 MB. Free memory was 242.6 MB in the beginning and 239.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 60.93 ms. Allocated memory is still 302.0 MB. Free memory was 239.6 MB in the beginning and 238.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 459.42 ms. Allocated memory is still 302.0 MB. Free memory was 238.6 MB in the beginning and 206.2 MB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 3.6 GB. * TraceAbstraction took 78976.07 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 205.2 MB in the beginning and 399.6 MB in the end (delta: -194.4 MB). Peak memory consumption was 1.1 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 11 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 24192 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 78.9s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 40 SDs, 0 SdLazy, 34 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1252 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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_1_e1_846_e1_1317.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-27-19-336.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e1_846_e1_1317.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_16-27-19-336.csv Completed graceful shutdown