java -Xss1g -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_e3_291.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:16:19,393 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:16:19,396 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:16:19,410 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:16:19,410 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:16:19,411 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:16:19,412 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:16:19,414 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:16:19,415 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:16:19,416 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:16:19,418 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:16:19,418 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:16:19,419 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:16:19,422 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:16:19,422 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:16:19,423 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:16:19,425 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:16:19,434 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:16:19,435 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:16:19,436 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:16:19,437 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:16:19,442 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:16:19,442 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:16:19,442 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:16:19,443 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:16:19,447 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:16:19,448 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:16:19,449 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:16:19,450 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:16:19,450 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:16:19,450 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:16:19,455 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:16:19,455 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:16:19,456 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:16:19,456 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:16:19,457 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:16:19,477 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:16:19,477 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:16:19,478 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:16:19,478 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:16:19,479 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:16:19,479 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:16:19,479 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:16:19,479 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:16:19,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:16:19,480 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:16:19,480 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:16:19,480 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:16:19,480 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:16:19,480 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:16:19,481 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:16:19,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:16:19,482 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:16:19,483 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:16:19,483 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:16:19,539 INFO ]: Repository-Root is: /tmp [2018-06-22 09:16:19,553 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:16:19,558 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:16:19,560 INFO ]: Initializing SmtParser... [2018-06-22 09:16:19,560 INFO ]: SmtParser initialized [2018-06-22 09:16:19,561 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e4_987_e3_291.smt2 [2018-06-22 09:16:19,562 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 [2018-06-22 09:16:19,651 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e4_987_e3_291.smt2 unknown [2018-06-22 09:16:20,180 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e4_987_e3_291.smt2 [2018-06-22 09:16:20,185 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:16:20,198 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:16:20,198 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:16:20,198 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:16:20,198 INFO ]: ChcToBoogie initialized [2018-06-22 09:16:20,210 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:16:20" (1/1) ... [2018-06-22 09:16:20,290 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:16:20 Unit [2018-06-22 09:16:20,291 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:16:20,291 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:16:20,291 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:16:20,291 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:16:20,308 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:16:20" (1/1) ... [2018-06-22 09:16:20,308 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:16:20" (1/1) ... [2018-06-22 09:16:20,322 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:16:20" (1/1) ... [2018-06-22 09:16:20,322 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:16:20" (1/1) ... [2018-06-22 09:16:20,331 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:16:20" (1/1) ... [2018-06-22 09:16:20,336 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:16:20" (1/1) ... [2018-06-22 09:16:20,338 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:16:20" (1/1) ... [2018-06-22 09:16:20,345 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:16:20,346 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:16:20,346 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:16:20,346 INFO ]: RCFGBuilder initialized [2018-06-22 09:16:20,347 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:16:20" (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) [2018-06-22 09:16:20,357 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:16:20,357 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:16:20,357 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:16:20,357 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:16:20,357 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:16:20,357 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 [2018-06-22 09:16:20,797 INFO ]: Using library mode [2018-06-22 09:16:20,798 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:16:20 BoogieIcfgContainer [2018-06-22 09:16:20,798 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:16:20,799 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:16:20,799 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:16:20,803 INFO ]: TraceAbstraction initialized [2018-06-22 09:16:20,803 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:16:20" (1/3) ... [2018-06-22 09:16:20,804 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4fa8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:16:20, skipping insertion in model container [2018-06-22 09:16:20,804 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:16:20" (2/3) ... [2018-06-22 09:16:20,804 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4fa8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:16:20, skipping insertion in model container [2018-06-22 09:16:20,804 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:16:20" (3/3) ... [2018-06-22 09:16:20,806 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:16:20,815 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:16:20,824 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:16:20,880 INFO ]: Using default assertion order modulation [2018-06-22 09:16:20,881 INFO ]: Interprodecural is true [2018-06-22 09:16:20,881 INFO ]: Hoare is false [2018-06-22 09:16:20,881 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:16:20,881 INFO ]: Backedges is TWOTRACK [2018-06-22 09:16:20,881 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:16:20,881 INFO ]: Difference is false [2018-06-22 09:16:20,881 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:16:20,881 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:16:20,903 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:16:20,917 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:16:20,917 INFO ]: Found error trace [2018-06-22 09:16:20,918 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:16:20,918 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:16:20,924 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 09:16:20,926 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:16:20,926 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:16:20,976 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:16:20,977 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:16:20,977 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:16:21,101 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:16:21,255 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:16:21,258 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:16:21,258 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:16:21,260 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:16:21,275 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:16:21,276 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:16:21,278 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:16:21,368 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:16:21,368 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:16:21,369 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:16:21,370 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:16:21,370 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:16:21,382 INFO ]: With dead ends: 9 [2018-06-22 09:16:21,383 INFO ]: Without dead ends: 9 [2018-06-22 09:16:21,384 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 [2018-06-22 09:16:21,398 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:16:21,418 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:16:21,420 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:16:21,420 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:16:21,422 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:16:21,422 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:16:21,422 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:16:21,422 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:16:21,422 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:16:21,422 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:16:21,422 INFO ]: Found error trace [2018-06-22 09:16:21,422 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:16:21,423 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:16:21,423 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 09:16:21,423 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:16:21,423 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:16:21,424 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:16:21,424 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:16:21,424 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:16:21,542 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:16:21,752 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:16:21,752 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:16:21,752 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 [2018-06-22 09:16:21,759 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:16:21,923 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:16:21,933 INFO ]: Computing forward predicates... [2018-06-22 09:16:22,220 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:16:22,257 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:16:22,258 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 09:16:22,258 INFO ]: Interpolant automaton has 6 states [2018-06-22 09:16:22,258 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 09:16:22,258 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:16:22,258 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 09:16:22,435 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:16:22,435 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 09:16:22,436 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 09:16:22,436 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 09:16:22,436 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:16:22,436 INFO ]: With dead ends: 11 [2018-06-22 09:16:22,436 INFO ]: Without dead ends: 11 [2018-06-22 09:16:22,437 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:16:22,437 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 09:16:22,438 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 09:16:22,438 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 09:16:22,439 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 09:16:22,439 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 09:16:22,439 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:16:22,439 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 09:16:22,439 INFO ]: Interpolant automaton has 6 states. [2018-06-22 09:16:22,439 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 09:16:22,439 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 09:16:22,439 INFO ]: Found error trace [2018-06-22 09:16:22,439 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:16:22,439 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:16:22,440 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 09:16:22,440 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:16:22,440 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:16:22,442 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:16:22,442 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:16:22,442 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:16:22,655 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:16:23,662 WARN ]: Spent 699.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2018-06-22 09:16:23,878 WARN ]: Spent 198.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2018-06-22 09:16:23,986 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:16:23,986 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:16:23,986 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 [2018-06-22 09:16:23,993 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:16:24,227 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:16:24,227 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:16:24,236 INFO ]: Computing forward predicates... [2018-06-22 09:16:24,777 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:16:24,797 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:16:24,797 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 09:16:24,797 INFO ]: Interpolant automaton has 10 states [2018-06-22 09:16:24,797 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 09:16:24,797 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 09:16:24,798 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 09:16:25,019 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:16:25,019 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 09:16:25,019 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 09:16:25,019 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 09:16:25,019 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:16:25,019 INFO ]: With dead ends: 13 [2018-06-22 09:16:25,019 INFO ]: Without dead ends: 13 [2018-06-22 09:16:25,020 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-22 09:16:25,020 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 09:16:25,021 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 09:16:25,021 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 09:16:25,022 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 09:16:25,022 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 09:16:25,022 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:16:25,022 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 09:16:25,022 INFO ]: Interpolant automaton has 10 states. [2018-06-22 09:16:25,022 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 09:16:25,022 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 09:16:25,022 INFO ]: Found error trace [2018-06-22 09:16:25,022 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:16:25,022 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:16:25,022 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 09:16:25,023 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:16:25,023 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:16:25,023 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:16:25,023 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:16:25,023 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:16:25,274 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:16:26,231 WARN ]: Spent 288.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2018-06-22 09:16:27,143 WARN ]: Spent 860.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 27 [2018-06-22 09:16:28,194 WARN ]: Spent 906.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 29 [2018-06-22 09:16:28,705 WARN ]: Spent 433.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 29 [2018-06-22 09:16:28,758 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:16:28,758 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:16:28,758 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 [2018-06-22 09:16:28,772 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 09:16:28,996 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 09:16:28,996 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:16:29,006 INFO ]: Computing forward predicates... [2018-06-22 09:16:29,263 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:16:29,291 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:16:29,291 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 09:16:29,292 INFO ]: Interpolant automaton has 14 states [2018-06-22 09:16:29,292 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 09:16:29,292 INFO ]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-06-22 09:16:29,292 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 09:16:29,573 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2018-06-22 09:16:29,755 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:16:29,755 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 09:16:29,756 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 09:16:29,756 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 09:16:29,756 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:16:29,756 INFO ]: With dead ends: 15 [2018-06-22 09:16:29,756 INFO ]: Without dead ends: 15 [2018-06-22 09:16:29,757 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2018-06-22 09:16:29,757 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 09:16:29,758 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 09:16:29,758 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 09:16:29,759 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 09:16:29,759 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-22 09:16:29,759 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:16:29,759 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 09:16:29,759 INFO ]: Interpolant automaton has 14 states. [2018-06-22 09:16:29,759 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 09:16:29,759 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 09:16:29,759 INFO ]: Found error trace [2018-06-22 09:16:29,759 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:16:29,759 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:16:29,759 INFO ]: Analyzing trace with hash 726730004, now seen corresponding path program 4 times [2018-06-22 09:16:29,759 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:16:29,759 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:16:29,762 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:16:29,762 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:16:29,762 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:16:31,459 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:16:48,920 WARN ]: Spent 10.24 s on a formula simplification. DAG size of input: 1063 DAG size of output: 25 Received shutdown request... [2018-06-22 09:17:25,453 WARN ]: Removed 2 from assertion stack [2018-06-22 09:17:25,453 WARN ]: Verification canceled [2018-06-22 09:17:25,456 WARN ]: Timeout [2018-06-22 09:17:25,457 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:17:25 BoogieIcfgContainer [2018-06-22 09:17:25,457 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:17:25,457 INFO ]: Toolchain (without parser) took 65272.13 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 250.3 MB in the beginning and 1.2 GB in the end (delta: -988.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 09:17:25,458 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:17:25,458 INFO ]: ChcToBoogie took 92.75 ms. Allocated memory is still 308.8 MB. Free memory was 250.3 MB in the beginning and 247.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:17:25,459 INFO ]: Boogie Preprocessor took 53.75 ms. Allocated memory is still 308.8 MB. Free memory was 247.3 MB in the beginning and 246.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 09:17:25,459 INFO ]: RCFGBuilder took 452.41 ms. Allocated memory is still 308.8 MB. Free memory was 245.3 MB in the beginning and 214.7 MB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 3.6 GB. [2018-06-22 09:17:25,469 INFO ]: TraceAbstraction took 64657.49 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 214.7 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 09:17:25,471 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 92.75 ms. Allocated memory is still 308.8 MB. Free memory was 250.3 MB in the beginning and 247.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 53.75 ms. Allocated memory is still 308.8 MB. Free memory was 247.3 MB in the beginning and 246.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 452.41 ms. Allocated memory is still 308.8 MB. Free memory was 245.3 MB in the beginning and 214.7 MB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64657.49 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 214.7 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). 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 3258. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 64.5s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 110 SDs, 0 SdLazy, 74 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 5.2s 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, 1.0s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 4239 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2895 ConjunctsInSsa, 112 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_e3_291.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-17-25-485.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_3_e4_987_e3_291.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-17-25-485.csv Completed graceful shutdown