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_5.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:57:03,819 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:57:03,822 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:57:03,836 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:57:03,837 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:57:03,838 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:57:03,839 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:57:03,843 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:57:03,844 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:57:03,846 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:57:03,847 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:57:03,847 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:57:03,848 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:57:03,852 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:57:03,853 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:57:03,854 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:57:03,863 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:57:03,865 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:57:03,866 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:57:03,869 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:57:03,871 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:57:03,873 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:57:03,874 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:57:03,874 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:57:03,877 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:57:03,878 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:57:03,879 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:57:03,879 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:57:03,880 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:57:03,881 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:57:03,885 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:57:03,886 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:57:03,886 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:57:03,887 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:57:03,887 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:57:03,888 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:57:03,922 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:57:03,923 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:57:03,923 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:57:03,923 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:57:03,926 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:57:03,926 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:57:03,926 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:57:03,926 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:57:03,927 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:57:03,927 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:57:03,927 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:57:03,927 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:57:03,927 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:57:03,927 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:57:03,928 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:57:03,928 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:57:03,928 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:57:03,928 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:57:03,928 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:57:03,929 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:57:03,938 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:57:03,940 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:57:03,940 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:57:04,017 INFO ]: Repository-Root is: /tmp [2018-06-25 16:57:04,038 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:57:04,044 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:57:04,046 INFO ]: Initializing SmtParser... [2018-06-25 16:57:04,046 INFO ]: SmtParser initialized [2018-06-25 16:57:04,047 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_5.smt2 [2018-06-25 16:57:04,048 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 16:57:04,147 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_5.smt2 unknown [2018-06-25 16:57:04,751 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_5.smt2 [2018-06-25 16:57:04,760 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:57:04,775 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:57:04,781 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:57:04,782 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:57:04,782 INFO ]: ChcToBoogie initialized [2018-06-25 16:57:04,791 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:57:04" (1/1) ... [2018-06-25 16:57:04,931 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:57:04 Unit [2018-06-25 16:57:04,931 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:57:04,932 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:57:04,932 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:57:04,932 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:57:04,981 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:57:04" (1/1) ... [2018-06-25 16:57:04,981 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:57:04" (1/1) ... [2018-06-25 16:57:05,012 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:57:04" (1/1) ... [2018-06-25 16:57:05,012 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:57:04" (1/1) ... [2018-06-25 16:57:05,018 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:57:04" (1/1) ... [2018-06-25 16:57:05,020 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:57:04" (1/1) ... [2018-06-25 16:57:05,022 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:57:04" (1/1) ... [2018-06-25 16:57:05,026 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:57:05,027 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:57:05,027 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:57:05,027 INFO ]: RCFGBuilder initialized [2018-06-25 16:57:05,028 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:57:04" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-25 16:57:05,057 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:57:05,057 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:57:05,057 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:57:05,057 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:57:05,057 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:57:05,057 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 16:57:05,533 INFO ]: Using library mode [2018-06-25 16:57:05,533 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:57:05 BoogieIcfgContainer [2018-06-25 16:57:05,533 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:57:05,535 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:57:05,535 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:57:05,540 INFO ]: TraceAbstraction initialized [2018-06-25 16:57:05,540 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:57:04" (1/3) ... [2018-06-25 16:57:05,547 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a119ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:57:05, skipping insertion in model container [2018-06-25 16:57:05,548 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:57:04" (2/3) ... [2018-06-25 16:57:05,548 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a119ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:57:05, skipping insertion in model container [2018-06-25 16:57:05,548 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:57:05" (3/3) ... [2018-06-25 16:57:05,554 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:57:05,587 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:57:05,598 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:57:05,662 INFO ]: Using default assertion order modulation [2018-06-25 16:57:05,662 INFO ]: Interprodecural is true [2018-06-25 16:57:05,662 INFO ]: Hoare is false [2018-06-25 16:57:05,662 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:57:05,663 INFO ]: Backedges is TWOTRACK [2018-06-25 16:57:05,663 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:57:05,663 INFO ]: Difference is false [2018-06-25 16:57:05,663 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:57:05,663 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:57:05,689 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:57:05,716 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:57:05,716 INFO ]: Found error trace [2018-06-25 16:57:05,717 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:57:05,717 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:57:05,731 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 16:57:05,734 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:57:05,735 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:57:05,819 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:57:05,819 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:57:05,819 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:57:05,997 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:57:06,168 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:57:06,171 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:57:06,171 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:57:06,173 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:57:06,190 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:57:06,191 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:57:06,194 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:57:06,316 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:57:06,316 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:57:06,317 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:57:06,318 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:57:06,319 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:57:06,328 INFO ]: With dead ends: 9 [2018-06-25 16:57:06,328 INFO ]: Without dead ends: 9 [2018-06-25 16:57:06,330 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 16:57:06,350 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:57:06,401 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:57:06,402 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:57:06,403 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:57:06,404 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:57:06,404 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:57:06,405 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:57:06,405 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:57:06,405 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:57:06,405 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:57:06,405 INFO ]: Found error trace [2018-06-25 16:57:06,405 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:57:06,405 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:57:06,405 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 16:57:06,405 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:57:06,405 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:57:06,406 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:57:06,406 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:57:06,406 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:57:06,610 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:57:06,848 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:57:06,848 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:57:06,848 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) [2018-06-25 16:57:06,873 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:57:07,040 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:57:07,053 INFO ]: Computing forward predicates... [2018-06-25 16:57:07,316 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:57:07,376 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:57:07,376 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-25 16:57:07,377 INFO ]: Interpolant automaton has 6 states [2018-06-25 16:57:07,377 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 16:57:07,377 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-25 16:57:07,377 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-25 16:57:07,658 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:57:07,658 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 16:57:07,659 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 16:57:07,659 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-25 16:57:07,659 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:57:07,660 INFO ]: With dead ends: 11 [2018-06-25 16:57:07,660 INFO ]: Without dead ends: 11 [2018-06-25 16:57:07,660 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-25 16:57:07,661 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 16:57:07,662 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 16:57:07,662 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 16:57:07,662 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 16:57:07,662 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-25 16:57:07,663 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:57:07,663 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 16:57:07,663 INFO ]: Interpolant automaton has 6 states. [2018-06-25 16:57:07,663 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 16:57:07,667 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 16:57:07,667 INFO ]: Found error trace [2018-06-25 16:57:07,667 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:57:07,667 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:57:07,667 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-25 16:57:07,667 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:57:07,667 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:57:07,668 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:57:07,668 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:57:07,668 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:57:07,990 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:57:09,838 WARN ]: Spent 1.34 s on a formula simplification. DAG size of input: 43 DAG size of output: 20 [2018-06-25 16:57:11,082 WARN ]: Spent 1.09 s on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2018-06-25 16:57:11,256 WARN ]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-25 16:57:11,258 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:57:11,258 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:57:11,258 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) [2018-06-25 16:57:11,284 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:57:11,592 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:57:11,592 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:57:11,602 INFO ]: Computing forward predicates... [2018-06-25 16:57:12,213 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:57:12,254 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:57:12,254 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-25 16:57:12,254 INFO ]: Interpolant automaton has 10 states [2018-06-25 16:57:12,255 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 16:57:12,255 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-25 16:57:12,255 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-25 16:57:12,712 WARN ]: Spent 364.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2018-06-25 16:57:13,379 WARN ]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-06-25 16:57:13,568 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:57:13,568 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-25 16:57:13,571 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 16:57:13,571 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-25 16:57:13,572 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:57:13,572 INFO ]: With dead ends: 13 [2018-06-25 16:57:13,572 INFO ]: Without dead ends: 13 [2018-06-25 16:57:13,572 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-25 16:57:13,572 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 16:57:13,574 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 16:57:13,574 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 16:57:13,574 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-25 16:57:13,574 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-25 16:57:13,574 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:57:13,574 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-25 16:57:13,574 INFO ]: Interpolant automaton has 10 states. [2018-06-25 16:57:13,574 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-25 16:57:13,574 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 16:57:13,574 INFO ]: Found error trace [2018-06-25 16:57:13,574 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:57:13,575 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:57:13,576 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-25 16:57:13,576 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:57:13,576 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:57:13,577 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:57:13,577 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:57:13,577 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:57:14,040 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:57:17,778 WARN ]: Spent 2.47 s on a formula simplification. DAG size of input: 130 DAG size of output: 20 [2018-06-25 16:57:32,331 WARN ]: Spent 14.17 s on a formula simplification. DAG size of input: 439 DAG size of output: 26 [2018-06-25 16:57:43,959 WARN ]: Spent 11.41 s on a formula simplification. DAG size of input: 382 DAG size of output: 26 [2018-06-25 16:57:51,542 WARN ]: Spent 7.33 s on a formula simplification. DAG size of input: 447 DAG size of output: 28 [2018-06-25 16:57:51,662 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:57:51,662 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:57:51,662 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 16:57:51,680 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 16:57:52,007 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-25 16:57:52,007 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:57:52,022 INFO ]: Computing forward predicates... [2018-06-25 16:57:52,636 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:57:52,674 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:57:52,674 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-25 16:57:52,674 INFO ]: Interpolant automaton has 14 states [2018-06-25 16:57:52,674 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-25 16:57:52,675 INFO ]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2018-06-25 16:57:52,675 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-25 16:57:53,000 WARN ]: Spent 253.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2018-06-25 16:57:53,498 WARN ]: Spent 433.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2018-06-25 16:57:53,900 WARN ]: Spent 355.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2018-06-25 16:57:54,498 WARN ]: Spent 536.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-06-25 16:57:54,785 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2018-06-25 16:57:54,863 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:57:54,863 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-25 16:57:54,865 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-25 16:57:54,865 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-25 16:57:54,865 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:57:54,865 INFO ]: With dead ends: 15 [2018-06-25 16:57:54,865 INFO ]: Without dead ends: 15 [2018-06-25 16:57:54,866 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2018-06-25 16:57:54,866 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-25 16:57:54,867 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-25 16:57:54,867 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-25 16:57:54,873 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-25 16:57:54,873 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-25 16:57:54,873 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:57:54,873 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-25 16:57:54,873 INFO ]: Interpolant automaton has 14 states. [2018-06-25 16:57:54,873 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-25 16:57:54,874 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-25 16:57:54,874 INFO ]: Found error trace [2018-06-25 16:57:54,874 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:57:54,874 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:57:54,874 INFO ]: Analyzing trace with hash -414382217, now seen corresponding path program 4 times [2018-06-25 16:57:54,874 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:57:54,874 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:57:54,875 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:57:54,875 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:57:54,875 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:57:57,791 INFO ]: Conjunction of SSA is unsat Received shutdown request... [2018-06-25 16:58:18,980 WARN ]: Unable to check validity of interpolant: cancelled [2018-06-25 16:58:19,211 WARN ]: Unable to check validity of interpolant: cancelled [2018-06-25 16:58:19,338 WARN ]: Unable to check validity of interpolant: cancelled [2018-06-25 16:58:19,474 WARN ]: Unable to check validity of interpolant: cancelled [2018-06-25 16:58:19,535 WARN ]: Unable to check validity of interpolant: cancelled [2018-06-25 16:58:19,536 WARN ]: Unable to check validity of interpolant: cancelled [2018-06-25 16:58:19,536 WARN ]: Unable to check validity of interpolant: cancelled [2018-06-25 16:58:19,537 WARN ]: Unable to check validity of interpolant: cancelled [2018-06-25 16:58:19,538 WARN ]: Unable to check validity of interpolant: cancelled [2018-06-25 16:58:19,557 WARN ]: Verification canceled [2018-06-25 16:58:19,571 WARN ]: Timeout [2018-06-25 16:58:19,580 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:58:19 BoogieIcfgContainer [2018-06-25 16:58:19,580 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:58:19,581 INFO ]: Toolchain (without parser) took 74820.06 ms. Allocated memory was 312.0 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 253.4 MB in the beginning and 390.1 MB in the end (delta: -136.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-25 16:58:19,582 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 312.0 MB. Free memory is still 277.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:58:19,582 INFO ]: ChcToBoogie took 150.34 ms. Allocated memory is still 312.0 MB. Free memory was 253.4 MB in the beginning and 250.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:58:19,583 INFO ]: Boogie Preprocessor took 93.95 ms. Allocated memory is still 312.0 MB. Free memory was 250.3 MB in the beginning and 249.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-25 16:58:19,583 INFO ]: RCFGBuilder took 506.82 ms. Allocated memory is still 312.0 MB. Free memory was 249.2 MB in the beginning and 217.1 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 3.6 GB. [2018-06-25 16:58:19,592 INFO ]: TraceAbstraction took 74045.16 ms. Allocated memory was 312.0 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 217.1 MB in the beginning and 390.1 MB in the end (delta: -173.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-25 16:58:19,594 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 312.0 MB. Free memory is still 277.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 150.34 ms. Allocated memory is still 312.0 MB. Free memory was 253.4 MB in the beginning and 250.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 93.95 ms. Allocated memory is still 312.0 MB. Free memory was 250.3 MB in the beginning and 249.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 506.82 ms. Allocated memory is still 312.0 MB. Free memory was 249.2 MB in the beginning and 217.1 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 74045.16 ms. Allocated memory was 312.0 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 217.1 MB in the beginning and 390.1 MB in the end (delta: -173.0 MB). Peak memory consumption was 1.2 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 NestedInterpolantsBuilder was constructing predicates for 13 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 73.9s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 3.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 100 SDs, 0 SdLazy, 70 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 43.2s 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: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 42.8s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 4338 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2895 ConjunctsInSsa, 160 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_5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-58-19-630.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_16-58-19-630.csv Completed graceful shutdown