java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1275_e5_846.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:42:19,410 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:42:19,412 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:42:19,427 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:42:19,428 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:42:19,429 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:42:19,430 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:42:19,432 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:42:19,433 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:42:19,435 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:42:19,435 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:42:19,436 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:42:19,436 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:42:19,437 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:42:19,440 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:42:19,441 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:42:19,442 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:42:19,452 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:42:19,453 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:42:19,454 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:42:19,455 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:42:19,460 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:42:19,460 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:42:19,460 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:42:19,461 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:42:19,462 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:42:19,463 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:42:19,465 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:42:19,466 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:42:19,466 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:42:19,466 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:42:19,467 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:42:19,467 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:42:19,472 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:42:19,472 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:42:19,472 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:42:19,496 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:42:19,496 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:42:19,497 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:42:19,497 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:42:19,498 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:42:19,499 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:42:19,499 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:42:19,499 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:42:19,499 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:42:19,499 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:42:19,500 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:42:19,500 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:42:19,500 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:42:19,500 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:42:19,500 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:42:19,501 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:42:19,501 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:42:19,501 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:42:19,501 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:42:19,501 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:42:19,501 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:42:19,503 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:42:19,503 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:42:19,546 INFO ]: Repository-Root is: /tmp [2018-06-25 16:42:19,560 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:42:19,566 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:42:19,568 INFO ]: Initializing SmtParser... [2018-06-25 16:42:19,568 INFO ]: SmtParser initialized [2018-06-25 16:42:19,569 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1275_e5_846.smt2 [2018-06-25 16:42:19,570 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 16:42:19,663 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1275_e5_846.smt2 unknown [2018-06-25 16:42:20,144 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e3_1275_e5_846.smt2 [2018-06-25 16:42:20,149 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:42:20,155 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:42:20,155 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:42:20,155 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:42:20,155 INFO ]: ChcToBoogie initialized [2018-06-25 16:42:20,159 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:42:20" (1/1) ... [2018-06-25 16:42:20,253 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:42:20 Unit [2018-06-25 16:42:20,253 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:42:20,254 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:42:20,254 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:42:20,254 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:42:20,277 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:42:20" (1/1) ... [2018-06-25 16:42:20,277 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:42:20" (1/1) ... [2018-06-25 16:42:20,287 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:42:20" (1/1) ... [2018-06-25 16:42:20,287 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:42:20" (1/1) ... [2018-06-25 16:42:20,293 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:42:20" (1/1) ... [2018-06-25 16:42:20,295 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:42:20" (1/1) ... [2018-06-25 16:42:20,297 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:42:20" (1/1) ... [2018-06-25 16:42:20,301 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:42:20,302 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:42:20,302 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:42:20,302 INFO ]: RCFGBuilder initialized [2018-06-25 16:42:20,303 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:42:20" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:42:20,337 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:42:20,337 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:42:20,337 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:42:20,337 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:42:20,337 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:42:20,337 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 16:42:20,749 INFO ]: Using library mode [2018-06-25 16:42:20,749 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:42:20 BoogieIcfgContainer [2018-06-25 16:42:20,749 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:42:20,750 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:42:20,750 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:42:20,754 INFO ]: TraceAbstraction initialized [2018-06-25 16:42:20,754 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:42:20" (1/3) ... [2018-06-25 16:42:20,755 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a19240a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:42:20, skipping insertion in model container [2018-06-25 16:42:20,755 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:42:20" (2/3) ... [2018-06-25 16:42:20,755 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a19240a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:42:20, skipping insertion in model container [2018-06-25 16:42:20,755 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:42:20" (3/3) ... [2018-06-25 16:42:20,757 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:42:20,767 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:42:20,778 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:42:20,837 INFO ]: Using default assertion order modulation [2018-06-25 16:42:20,838 INFO ]: Interprodecural is true [2018-06-25 16:42:20,838 INFO ]: Hoare is false [2018-06-25 16:42:20,838 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:42:20,838 INFO ]: Backedges is TWOTRACK [2018-06-25 16:42:20,838 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:42:20,838 INFO ]: Difference is false [2018-06-25 16:42:20,838 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:42:20,838 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:42:20,856 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:42:20,872 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:42:20,872 INFO ]: Found error trace [2018-06-25 16:42:20,873 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:42:20,874 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:42:20,879 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 16:42:20,882 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:42:20,882 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:42:20,932 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:42:20,932 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:42:20,932 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:42:21,049 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:42:21,171 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:42:21,174 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:42:21,174 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:42:21,176 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:42:21,188 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:42:21,188 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:42:21,190 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:42:21,276 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:42:21,276 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:42:21,276 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:42:21,277 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:42:21,278 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:42:21,284 INFO ]: With dead ends: 9 [2018-06-25 16:42:21,284 INFO ]: Without dead ends: 9 [2018-06-25 16:42:21,285 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 16:42:21,300 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:42:21,316 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:42:21,317 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:42:21,318 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:42:21,319 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:42:21,319 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:42:21,319 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:42:21,319 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:42:21,319 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:42:21,320 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:42:21,320 INFO ]: Found error trace [2018-06-25 16:42:21,320 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:42:21,320 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:42:21,320 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 16:42:21,320 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:42:21,320 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:42:21,321 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:42:21,321 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:42:21,321 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:42:21,444 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:42:21,693 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:42:21,693 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:42:21,693 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 16:42:21,708 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 16:42:21,871 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:42:21,884 INFO ]: Computing forward predicates... [2018-06-25 16:42:22,122 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:42:22,151 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:42:22,151 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-25 16:42:22,152 INFO ]: Interpolant automaton has 6 states [2018-06-25 16:42:22,152 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 16:42:22,152 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-25 16:42:22,152 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-25 16:42:22,335 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:42:22,335 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 16:42:22,336 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 16:42:22,336 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-25 16:42:22,336 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:42:22,336 INFO ]: With dead ends: 11 [2018-06-25 16:42:22,336 INFO ]: Without dead ends: 11 [2018-06-25 16:42:22,337 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 16:42:22,337 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 16:42:22,338 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 16:42:22,338 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 16:42:22,338 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 16:42:22,338 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-25 16:42:22,339 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:42:22,339 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 16:42:22,339 INFO ]: Interpolant automaton has 6 states. [2018-06-25 16:42:22,339 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 16:42:22,339 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 16:42:22,339 INFO ]: Found error trace [2018-06-25 16:42:22,339 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:42:22,339 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:42:22,339 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-25 16:42:22,339 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:42:22,339 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:42:22,341 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:42:22,341 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:42:22,341 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:42:22,512 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:42:23,160 WARN ]: Spent 225.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 31 [2018-06-25 16:42:23,253 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:42:23,253 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:42:23,253 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 16:42:23,267 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 16:42:23,471 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:42:23,471 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:42:23,480 INFO ]: Computing forward predicates... [2018-06-25 16:42:24,032 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-06-25 16:42:24,035 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:42:24,068 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:42:24,068 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-25 16:42:24,068 INFO ]: Interpolant automaton has 10 states [2018-06-25 16:42:24,068 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 16:42:24,068 INFO ]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-25 16:42:24,068 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-25 16:42:24,392 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:42:24,392 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-25 16:42:24,392 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 16:42:24,392 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-25 16:42:24,393 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:42:24,393 INFO ]: With dead ends: 13 [2018-06-25 16:42:24,393 INFO ]: Without dead ends: 13 [2018-06-25 16:42:24,393 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-06-25 16:42:24,393 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 16:42:24,395 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 16:42:24,395 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 16:42:24,395 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-25 16:42:24,396 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-25 16:42:24,396 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:42:24,396 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-25 16:42:24,396 INFO ]: Interpolant automaton has 10 states. [2018-06-25 16:42:24,396 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-25 16:42:24,396 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 16:42:24,396 INFO ]: Found error trace [2018-06-25 16:42:24,396 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:42:24,396 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:42:24,396 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-25 16:42:24,396 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:42:24,397 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:42:24,397 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:42:24,397 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:42:24,397 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:42:24,726 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:42:26,029 WARN ]: Spent 548.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 12 [2018-06-25 16:42:26,476 WARN ]: Spent 354.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 12 [2018-06-25 16:42:27,185 WARN ]: Spent 667.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 12 [2018-06-25 16:42:27,786 WARN ]: Spent 494.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 12 [2018-06-25 16:42:27,793 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:42:27,793 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:42:27,793 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 16:42:27,802 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 16:42:28,068 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-25 16:42:28,068 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:42:28,079 INFO ]: Computing forward predicates... [2018-06-25 16:42:28,283 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:42:28,305 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:42:28,309 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-25 16:42:28,310 INFO ]: Interpolant automaton has 14 states [2018-06-25 16:42:28,310 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-25 16:42:28,310 INFO ]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-06-25 16:42:28,310 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-25 16:42:28,438 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:42:28,438 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-25 16:42:28,439 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-25 16:42:28,439 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-25 16:42:28,439 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:42:28,439 INFO ]: With dead ends: 15 [2018-06-25 16:42:28,439 INFO ]: Without dead ends: 15 [2018-06-25 16:42:28,440 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-06-25 16:42:28,440 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-25 16:42:28,442 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-25 16:42:28,442 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-25 16:42:28,442 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-25 16:42:28,442 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-25 16:42:28,442 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:42:28,442 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-25 16:42:28,442 INFO ]: Interpolant automaton has 14 states. [2018-06-25 16:42:28,442 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-25 16:42:28,443 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-25 16:42:28,443 INFO ]: Found error trace [2018-06-25 16:42:28,443 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:42:28,443 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:42:28,443 INFO ]: Analyzing trace with hash -414382217, now seen corresponding path program 4 times [2018-06-25 16:42:28,443 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:42:28,443 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:42:28,444 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:42:28,444 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:42:28,444 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:42:28,921 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:42:52,242 WARN ]: Spent 3.63 s on a formula simplification. DAG size of input: 557 DAG size of output: 12 [2018-06-25 16:42:58,090 WARN ]: Spent 5.49 s on a formula simplification. DAG size of input: 910 DAG size of output: 12 [2018-06-25 16:43:16,586 WARN ]: Spent 17.65 s on a formula simplification. DAG size of input: 1875 DAG size of output: 21 [2018-06-25 16:43:24,667 WARN ]: Spent 7.57 s on a formula simplification. DAG size of input: 1394 DAG size of output: 12 Received shutdown request... [2018-06-25 16:43:30,516 WARN ]: Removed 2 from assertion stack [2018-06-25 16:43:30,517 WARN ]: Verification canceled [2018-06-25 16:43:30,520 WARN ]: Timeout [2018-06-25 16:43:30,521 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:43:30 BoogieIcfgContainer [2018-06-25 16:43:30,521 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:43:30,522 INFO ]: Toolchain (without parser) took 70372.44 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 249.2 MB in the beginning and 1.1 GB in the end (delta: -888.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 16:43:30,523 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:43:30,524 INFO ]: ChcToBoogie took 98.35 ms. Allocated memory is still 307.8 MB. Free memory was 249.2 MB in the beginning and 246.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:43:30,524 INFO ]: Boogie Preprocessor took 47.40 ms. Allocated memory is still 307.8 MB. Free memory was 246.2 MB in the beginning and 245.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-25 16:43:30,524 INFO ]: RCFGBuilder took 447.65 ms. Allocated memory is still 307.8 MB. Free memory was 244.2 MB in the beginning and 213.1 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 3.6 GB. [2018-06-25 16:43:30,525 INFO ]: TraceAbstraction took 69770.36 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 213.1 MB in the beginning and 1.1 GB in the end (delta: -924.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-25 16:43:30,527 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 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 98.35 ms. Allocated memory is still 307.8 MB. Free memory was 249.2 MB in the beginning and 246.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.40 ms. Allocated memory is still 307.8 MB. Free memory was 246.2 MB in the beginning and 245.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 447.65 ms. Allocated memory is still 307.8 MB. Free memory was 244.2 MB in the beginning and 213.1 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 69770.36 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 213.1 MB in the beginning and 1.1 GB in the end (delta: -924.5 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 PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 1017. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 69.6s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 105 SDs, 0 SdLazy, 70 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.9s 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, 1.1s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 2282 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2895 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_3_e3_1275_e5_846.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-43-30-538.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_3_e3_1275_e5_846.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_16-43-30-538.csv Completed graceful shutdown