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_4_e2_532.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:48:45,644 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:48:45,646 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:48:45,660 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:48:45,660 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:48:45,661 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:48:45,665 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:48:45,667 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:48:45,668 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:48:45,669 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:48:45,671 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:48:45,671 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:48:45,672 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:48:45,673 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:48:45,674 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:48:45,675 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:48:45,677 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:48:45,679 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:48:45,680 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:48:45,681 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:48:45,682 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:48:45,685 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:48:45,685 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:48:45,685 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:48:45,686 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:48:45,687 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:48:45,688 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:48:45,689 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:48:45,690 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:48:45,690 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:48:45,690 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:48:45,691 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:48:45,691 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:48:45,692 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:48:45,693 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:48:45,693 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:48:45,716 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:48:45,717 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:48:45,717 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:48:45,717 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:48:45,718 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:48:45,718 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:48:45,719 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:48:45,722 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:48:45,723 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:48:45,723 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:48:45,723 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:48:45,723 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:48:45,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:48:45,723 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:48:45,723 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:48:45,724 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:48:45,724 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:48:45,724 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:48:45,724 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:48:45,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:48:45,724 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:48:45,725 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:48:45,726 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:48:45,770 INFO ]: Repository-Root is: /tmp [2018-06-25 16:48:45,789 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:48:45,793 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:48:45,794 INFO ]: Initializing SmtParser... [2018-06-25 16:48:45,795 INFO ]: SmtParser initialized [2018-06-25 16:48:45,795 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_532.smt2 [2018-06-25 16:48:45,796 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 16:48:45,886 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_532.smt2 unknown [2018-06-25 16:48:46,342 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_532.smt2 [2018-06-25 16:48:46,347 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:48:46,357 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:48:46,357 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:48:46,357 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:48:46,358 INFO ]: ChcToBoogie initialized [2018-06-25 16:48:46,366 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:48:46" (1/1) ... [2018-06-25 16:48:46,443 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:48:46 Unit [2018-06-25 16:48:46,443 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:48:46,444 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:48:46,444 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:48:46,444 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:48:46,459 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:48:46" (1/1) ... [2018-06-25 16:48:46,459 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:48:46" (1/1) ... [2018-06-25 16:48:46,466 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:48:46" (1/1) ... [2018-06-25 16:48:46,467 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:48:46" (1/1) ... [2018-06-25 16:48:46,473 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:48:46" (1/1) ... [2018-06-25 16:48:46,475 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:48:46" (1/1) ... [2018-06-25 16:48:46,477 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:48:46" (1/1) ... [2018-06-25 16:48:46,480 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:48:46,481 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:48:46,481 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:48:46,481 INFO ]: RCFGBuilder initialized [2018-06-25 16:48:46,482 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:48:46" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:48:46,497 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:48:46,497 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:48:46,497 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:48:46,497 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:48:46,497 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:48:46,497 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 16:48:46,930 INFO ]: Using library mode [2018-06-25 16:48:46,931 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:48:46 BoogieIcfgContainer [2018-06-25 16:48:46,931 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:48:46,932 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:48:46,932 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:48:46,938 INFO ]: TraceAbstraction initialized [2018-06-25 16:48:46,938 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:48:46" (1/3) ... [2018-06-25 16:48:46,939 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a069082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:48:46, skipping insertion in model container [2018-06-25 16:48:46,939 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:48:46" (2/3) ... [2018-06-25 16:48:46,939 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a069082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:48:46, skipping insertion in model container [2018-06-25 16:48:46,939 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:48:46" (3/3) ... [2018-06-25 16:48:46,941 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:48:46,950 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:48:46,959 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:48:47,003 INFO ]: Using default assertion order modulation [2018-06-25 16:48:47,003 INFO ]: Interprodecural is true [2018-06-25 16:48:47,003 INFO ]: Hoare is false [2018-06-25 16:48:47,003 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:48:47,003 INFO ]: Backedges is TWOTRACK [2018-06-25 16:48:47,003 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:48:47,003 INFO ]: Difference is false [2018-06-25 16:48:47,003 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:48:47,003 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:48:47,019 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:48:47,033 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:48:47,033 INFO ]: Found error trace [2018-06-25 16:48:47,033 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:48:47,034 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:48:47,040 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 16:48:47,043 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:48:47,043 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:48:47,074 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:48:47,074 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:48:47,074 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:48:47,157 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:48:47,289 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:48:47,290 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:48:47,290 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:48:47,292 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:48:47,303 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:48:47,303 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:48:47,305 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:48:47,363 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:48:47,363 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:48:47,366 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:48:47,367 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:48:47,367 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:48:47,380 INFO ]: With dead ends: 9 [2018-06-25 16:48:47,380 INFO ]: Without dead ends: 9 [2018-06-25 16:48:47,382 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 16:48:47,400 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:48:47,426 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:48:47,427 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:48:47,427 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:48:47,428 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:48:47,428 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:48:47,428 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:48:47,428 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:48:47,428 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:48:47,429 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:48:47,429 INFO ]: Found error trace [2018-06-25 16:48:47,429 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:48:47,429 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:48:47,430 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 16:48:47,430 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:48:47,430 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:48:47,431 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:48:47,431 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:48:47,431 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:48:47,560 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:48:47,752 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:48:47,752 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:48:47,752 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 [2018-06-25 16:48:47,758 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:48:47,904 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:48:47,915 INFO ]: Computing forward predicates... [2018-06-25 16:48:48,197 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:48:48,228 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:48:48,228 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-25 16:48:48,229 INFO ]: Interpolant automaton has 6 states [2018-06-25 16:48:48,229 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 16:48:48,229 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-25 16:48:48,229 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-25 16:48:48,399 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:48:48,399 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 16:48:48,400 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 16:48:48,400 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-25 16:48:48,400 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:48:48,401 INFO ]: With dead ends: 11 [2018-06-25 16:48:48,401 INFO ]: Without dead ends: 11 [2018-06-25 16:48:48,401 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 [2018-06-25 16:48:48,402 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 16:48:48,403 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 16:48:48,403 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 16:48:48,403 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 16:48:48,403 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-25 16:48:48,403 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:48:48,403 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 16:48:48,403 INFO ]: Interpolant automaton has 6 states. [2018-06-25 16:48:48,403 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 16:48:48,403 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 16:48:48,403 INFO ]: Found error trace [2018-06-25 16:48:48,404 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:48:48,404 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:48:48,405 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-25 16:48:48,405 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:48:48,405 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:48:48,406 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:48:48,406 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:48:48,406 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:48:48,563 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:48:49,156 WARN ]: Spent 300.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2018-06-25 16:48:49,398 WARN ]: Spent 159.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 12 [2018-06-25 16:48:49,429 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:48:49,429 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:48:49,429 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 16:48:49,439 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 16:48:49,631 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:48:49,631 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:48:49,637 INFO ]: Computing forward predicates... [2018-06-25 16:48:50,127 WARN ]: Spent 119.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-06-25 16:48:50,260 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:48:50,281 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:48:50,281 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-25 16:48:50,281 INFO ]: Interpolant automaton has 10 states [2018-06-25 16:48:50,282 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 16:48:50,282 INFO ]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-25 16:48:50,282 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-25 16:48:50,409 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:48:50,409 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-25 16:48:50,409 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 16:48:50,409 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-25 16:48:50,409 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:48:50,410 INFO ]: With dead ends: 13 [2018-06-25 16:48:50,410 INFO ]: Without dead ends: 13 [2018-06-25 16:48:50,410 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-06-25 16:48:50,410 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 16:48:50,412 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 16:48:50,412 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 16:48:50,412 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-25 16:48:50,412 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-25 16:48:50,412 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:48:50,412 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-25 16:48:50,412 INFO ]: Interpolant automaton has 10 states. [2018-06-25 16:48:50,412 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-25 16:48:50,413 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 16:48:50,413 INFO ]: Found error trace [2018-06-25 16:48:50,413 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:48:50,413 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:48:50,413 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-25 16:48:50,413 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:48:50,413 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:48:50,414 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:48:50,414 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:48:50,414 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:48:50,673 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:48:52,440 WARN ]: Spent 787.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 20 [2018-06-25 16:48:53,313 WARN ]: Spent 716.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 12 [2018-06-25 16:48:54,171 WARN ]: Spent 807.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 20 [2018-06-25 16:48:54,201 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:48:54,201 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:48:54,201 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 16:48:54,214 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 16:48:54,434 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-25 16:48:54,435 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:48:54,443 INFO ]: Computing forward predicates... [2018-06-25 16:48:54,957 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:48:54,978 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:48:54,978 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-25 16:48:54,978 INFO ]: Interpolant automaton has 14 states [2018-06-25 16:48:54,978 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-25 16:48:54,979 INFO ]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-06-25 16:48:54,979 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-25 16:48:55,131 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:48:55,131 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-25 16:48:55,132 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-25 16:48:55,132 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-25 16:48:55,132 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:48:55,132 INFO ]: With dead ends: 15 [2018-06-25 16:48:55,132 INFO ]: Without dead ends: 15 [2018-06-25 16:48:55,133 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2018-06-25 16:48:55,133 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-25 16:48:55,134 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-25 16:48:55,134 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-25 16:48:55,135 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-25 16:48:55,135 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-25 16:48:55,135 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:48:55,135 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-25 16:48:55,135 INFO ]: Interpolant automaton has 14 states. [2018-06-25 16:48:55,135 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-25 16:48:55,136 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-25 16:48:55,136 INFO ]: Found error trace [2018-06-25 16:48:55,138 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:48:55,138 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:48:55,138 INFO ]: Analyzing trace with hash -414382217, now seen corresponding path program 4 times [2018-06-25 16:48:55,138 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:48:55,138 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:48:55,139 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:48:55,139 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:48:55,139 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:48:55,502 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:48:57,025 WARN ]: Spent 530.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 12 [2018-06-25 16:48:58,516 WARN ]: Spent 1.34 s on a formula simplification. DAG size of input: 410 DAG size of output: 39 [2018-06-25 16:49:00,194 WARN ]: Spent 1.49 s on a formula simplification. DAG size of input: 514 DAG size of output: 12 [2018-06-25 16:49:03,735 WARN ]: Spent 3.34 s on a formula simplification. DAG size of input: 668 DAG size of output: 55 [2018-06-25 16:49:05,852 WARN ]: Spent 1.99 s on a formula simplification. DAG size of input: 543 DAG size of output: 31 [2018-06-25 16:49:08,876 WARN ]: Spent 2.77 s on a formula simplification. DAG size of input: 893 DAG size of output: 39 [2018-06-25 16:49:08,889 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:49:08,889 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:49:08,889 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:49:08,896 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 16:49:09,233 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 16:49:09,234 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:49:09,249 INFO ]: Computing forward predicates... [2018-06-25 16:49:09,756 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:49:09,777 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:49:09,777 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-06-25 16:49:09,777 INFO ]: Interpolant automaton has 18 states [2018-06-25 16:49:09,777 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-25 16:49:09,777 INFO ]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2018-06-25 16:49:09,778 INFO ]: Start difference. First operand 15 states and 15 transitions. Second operand 18 states. [2018-06-25 16:49:09,947 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:49:09,947 INFO ]: Finished difference Result 17 states and 17 transitions. [2018-06-25 16:49:09,948 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-25 16:49:09,948 INFO ]: Start accepts. Automaton has 18 states. Word has length 14 [2018-06-25 16:49:09,948 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:49:09,948 INFO ]: With dead ends: 17 [2018-06-25 16:49:09,948 INFO ]: Without dead ends: 17 [2018-06-25 16:49:09,949 INFO ]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2018-06-25 16:49:09,949 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-25 16:49:09,951 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-25 16:49:09,951 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-25 16:49:09,952 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-06-25 16:49:09,952 INFO ]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-06-25 16:49:09,952 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:49:09,952 INFO ]: Abstraction has 17 states and 17 transitions. [2018-06-25 16:49:09,952 INFO ]: Interpolant automaton has 18 states. [2018-06-25 16:49:09,952 INFO ]: Start isEmpty. Operand 17 states and 17 transitions. [2018-06-25 16:49:09,952 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-25 16:49:09,952 INFO ]: Found error trace [2018-06-25 16:49:09,952 INFO ]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:49:09,953 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:49:09,953 INFO ]: Analyzing trace with hash 1237160535, now seen corresponding path program 5 times [2018-06-25 16:49:09,953 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:49:09,953 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:49:09,954 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:49:09,954 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:49:09,954 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:49:21,841 INFO ]: Conjunction of SSA is unsat Received shutdown request... [2018-06-25 16:49:45,462 FATAL]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:210) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:228) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:410) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:425) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-06-25 16:49:45,466 INFO ]: Toolchain (without parser) took 59118.71 ms. Allocated memory was 305.1 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 246.7 MB in the beginning and 777.0 MB in the end (delta: -530.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-25 16:49:45,467 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.1 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:49:45,467 INFO ]: ChcToBoogie took 86.42 ms. Allocated memory is still 305.1 MB. Free memory was 246.7 MB in the beginning and 243.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:49:45,467 INFO ]: Boogie Preprocessor took 36.47 ms. Allocated memory is still 305.1 MB. Free memory was 243.7 MB in the beginning and 242.7 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-25 16:49:45,468 INFO ]: RCFGBuilder took 450.02 ms. Allocated memory is still 305.1 MB. Free memory was 242.7 MB in the beginning and 211.6 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 3.6 GB. [2018-06-25 16:49:45,468 INFO ]: TraceAbstraction took 58532.67 ms. Allocated memory was 305.1 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 210.6 MB in the beginning and 777.5 MB in the end (delta: -566.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-25 16:49:45,470 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 305.1 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 86.42 ms. Allocated memory is still 305.1 MB. Free memory was 246.7 MB in the beginning and 243.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 36.47 ms. Allocated memory is still 305.1 MB. Free memory was 243.7 MB in the beginning and 242.7 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * RCFGBuilder took 450.02 ms. Allocated memory is still 305.1 MB. Free memory was 242.7 MB in the beginning and 211.6 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 58532.67 ms. Allocated memory was 305.1 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 210.6 MB in the beginning and 777.5 MB in the end (delta: -566.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_4_e2_532.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-49-45-483.csv Completed graceful shutdown