java -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/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 12:59:13,392 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 12:59:13,394 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 12:59:13,411 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 12:59:13,411 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 12:59:13,412 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 12:59:13,414 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 12:59:13,416 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 12:59:13,418 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 12:59:13,419 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 12:59:13,421 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 12:59:13,421 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 12:59:13,422 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 12:59:13,423 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 12:59:13,423 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 12:59:13,427 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 12:59:13,429 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 12:59:13,438 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 12:59:13,440 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 12:59:13,441 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 12:59:13,442 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 12:59:13,447 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 12:59:13,447 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 12:59:13,447 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 12:59:13,448 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 12:59:13,449 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 12:59:13,450 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 12:59:13,453 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 12:59:13,454 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 12:59:13,454 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 12:59:13,454 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 12:59:13,455 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 12:59:13,455 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 12:59:13,460 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 12:59:13,461 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 12:59:13,461 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 12:59:13,485 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 12:59:13,486 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 12:59:13,486 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 12:59:13,486 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 12:59:13,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 12:59:13,488 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 12:59:13,488 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 12:59:13,488 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 12:59:13,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 12:59:13,488 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 12:59:13,489 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 12:59:13,492 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 12:59:13,492 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 12:59:13,492 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 12:59:13,492 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 12:59:13,492 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 12:59:13,493 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 12:59:13,494 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 12:59:13,494 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 12:59:13,544 INFO ]: Repository-Root is: /tmp [2018-06-18 12:59:13,559 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 12:59:13,564 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 12:59:13,565 INFO ]: Initializing SmtParser... [2018-06-18 12:59:13,565 INFO ]: SmtParser initialized [2018-06-18 12:59:13,567 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-4.smt2 [2018-06-18 12:59:13,569 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 [2018-06-18 12:59:13,662 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-4.smt2 unknown [2018-06-18 12:59:14,138 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-4.smt2 [2018-06-18 12:59:14,147 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 12:59:14,154 INFO ]: Walking toolchain with 4 elements. [2018-06-18 12:59:14,154 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 12:59:14,154 INFO ]: Initializing ChcToBoogie... [2018-06-18 12:59:14,155 INFO ]: ChcToBoogie initialized [2018-06-18 12:59:14,161 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 12:59:14" (1/1) ... [2018-06-18 12:59:18,739 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 12:59:18 Unit [2018-06-18 12:59:18,739 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 12:59:18,740 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 12:59:18,740 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 12:59:18,740 INFO ]: Boogie Preprocessor initialized [2018-06-18 12:59:18,764 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 12:59:18" (1/1) ... [2018-06-18 12:59:18,765 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 12:59:18" (1/1) ... [2018-06-18 12:59:18,890 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 12:59:18" (1/1) ... [2018-06-18 12:59:18,891 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 12:59:18" (1/1) ... [2018-06-18 12:59:19,049 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 12:59:18" (1/1) ... [2018-06-18 12:59:19,050 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 12:59:18" (1/1) ... [2018-06-18 12:59:19,172 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 12:59:18" (1/1) ... [2018-06-18 12:59:19,256 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 12:59:19,256 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 12:59:19,256 INFO ]: Initializing RCFGBuilder... [2018-06-18 12:59:19,256 INFO ]: RCFGBuilder initialized [2018-06-18 12:59:19,257 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 12:59:18" (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 [2018-06-18 12:59:19,266 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 12:59:19,266 INFO ]: Found specification of procedure False [2018-06-18 12:59:19,266 INFO ]: Found implementation of procedure False [2018-06-18 12:59:19,266 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 12:59:19,266 INFO ]: Found specification of procedure state [2018-06-18 12:59:19,266 INFO ]: Found implementation of procedure state [2018-06-18 12:59:19,266 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 12:59:19,266 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 12:59:19,266 INFO ]: Found implementation of procedure Ultimate.START [2018-06-18 12:59:23,107 INFO ]: Using library mode [2018-06-18 12:59:23,107 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 12:59:23 BoogieIcfgContainer [2018-06-18 12:59:23,107 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 12:59:23,108 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 12:59:23,108 INFO ]: Initializing TraceAbstraction... [2018-06-18 12:59:23,111 INFO ]: TraceAbstraction initialized [2018-06-18 12:59:23,112 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 12:59:14" (1/3) ... [2018-06-18 12:59:23,113 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2b9c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 12:59:23, skipping insertion in model container [2018-06-18 12:59:23,113 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 12:59:18" (2/3) ... [2018-06-18 12:59:23,113 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2b9c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 12:59:23, skipping insertion in model container [2018-06-18 12:59:23,113 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 12:59:23" (3/3) ... [2018-06-18 12:59:23,115 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 12:59:23,124 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 12:59:23,132 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 12:59:23,173 INFO ]: Using default assertion order modulation [2018-06-18 12:59:23,174 INFO ]: Interprodecural is true [2018-06-18 12:59:23,174 INFO ]: Hoare is false [2018-06-18 12:59:23,174 INFO ]: Compute interpolants for FPandBP [2018-06-18 12:59:23,174 INFO ]: Backedges is TWOTRACK [2018-06-18 12:59:23,174 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 12:59:23,174 INFO ]: Difference is false [2018-06-18 12:59:23,174 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 12:59:23,174 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 12:59:23,191 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 12:59:23,201 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 12:59:23,201 INFO ]: Found error trace [2018-06-18 12:59:23,202 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 12:59:23,202 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 12:59:23,207 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-18 12:59:23,209 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 12:59:23,210 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 12:59:23,251 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 12:59:23,251 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 12:59:23,251 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 12:59:23,291 INFO ]: Conjunction of SSA is unsat [2018-06-18 12:59:23,300 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 12:59:23,460 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 12:59:23,462 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 12:59:23,462 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 12:59:23,464 INFO ]: Interpolant automaton has 4 states [2018-06-18 12:59:23,478 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 12:59:23,478 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 12:59:23,480 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 12:59:23,617 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 12:59:23,617 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 12:59:23,618 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 12:59:23,619 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 12:59:23,620 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 12:59:23,633 INFO ]: With dead ends: 13 [2018-06-18 12:59:23,633 INFO ]: Without dead ends: 13 [2018-06-18 12:59:23,635 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 12:59:23,656 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 12:59:23,694 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 12:59:23,695 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 12:59:23,695 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 12:59:23,698 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 12:59:23,698 INFO ]: Finished accepts. word is rejected. [2018-06-18 12:59:23,698 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 12:59:23,698 INFO ]: Interpolant automaton has 4 states. [2018-06-18 12:59:23,699 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 12:59:23,700 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 12:59:23,700 INFO ]: Found error trace [2018-06-18 12:59:23,700 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 12:59:23,700 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 12:59:23,700 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-18 12:59:23,700 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 12:59:23,700 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 12:59:23,701 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 12:59:23,701 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 12:59:23,701 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 12:59:23,872 INFO ]: Conjunction of SSA is unsat [2018-06-18 12:59:23,873 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 12:59:24,153 WARN ]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-18 12:59:24,320 WARN ]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-18 12:59:24,450 WARN ]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-18 12:59:24,452 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 12:59:24,452 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 12:59:24,452 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) [2018-06-18 12:59:24,473 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 12:59:24,571 INFO ]: Conjunction of SSA is unsat [2018-06-18 12:59:24,591 INFO ]: Computing forward predicates... [2018-06-18 12:59:27,379 WARN ]: Spent 1.97 s on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2018-06-18 12:59:27,666 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 12:59:27,689 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 12:59:27,689 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-18 12:59:27,689 INFO ]: Interpolant automaton has 9 states [2018-06-18 12:59:27,689 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-18 12:59:27,690 INFO ]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-06-18 12:59:27,690 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-18 12:59:27,973 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 12:59:27,973 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 12:59:27,973 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 12:59:27,973 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-18 12:59:27,974 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 12:59:27,974 INFO ]: With dead ends: 15 [2018-06-18 12:59:27,974 INFO ]: Without dead ends: 15 [2018-06-18 12:59:27,975 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-06-18 12:59:27,975 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 12:59:27,978 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 12:59:27,978 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 12:59:27,978 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 12:59:27,978 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 12:59:27,978 INFO ]: Finished accepts. word is rejected. [2018-06-18 12:59:27,978 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 12:59:27,978 INFO ]: Interpolant automaton has 9 states. [2018-06-18 12:59:27,978 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 12:59:27,979 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 12:59:27,979 INFO ]: Found error trace [2018-06-18 12:59:27,979 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 12:59:27,979 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 12:59:27,979 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-18 12:59:27,979 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 12:59:27,979 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 12:59:27,980 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 12:59:27,980 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 12:59:27,980 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 12:59:28,105 INFO ]: Conjunction of SSA is unsat [2018-06-18 12:59:28,106 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 12:59:28,512 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 12:59:28,512 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 12:59:28,512 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 [2018-06-18 12:59:30,570 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 12:59:30,658 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 12:59:30,658 INFO ]: Conjunction of SSA is unsat [2018-06-18 12:59:30,668 INFO ]: Computing forward predicates... [2018-06-18 12:59:31,386 WARN ]: Spent 207.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 23 [2018-06-18 12:59:31,741 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2018-06-18 12:59:31,849 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 12:59:31,882 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 12:59:31,882 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-18 12:59:31,883 INFO ]: Interpolant automaton has 12 states [2018-06-18 12:59:31,883 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-18 12:59:31,883 INFO ]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-06-18 12:59:31,883 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-18 12:59:32,088 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 12:59:32,088 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 12:59:32,089 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 12:59:32,089 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-18 12:59:32,090 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 12:59:32,090 INFO ]: With dead ends: 17 [2018-06-18 12:59:32,090 INFO ]: Without dead ends: 17 [2018-06-18 12:59:32,090 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-06-18 12:59:32,091 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 12:59:32,093 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 12:59:32,093 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 12:59:32,094 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 12:59:32,094 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 12:59:32,094 INFO ]: Finished accepts. word is rejected. [2018-06-18 12:59:32,094 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 12:59:32,094 INFO ]: Interpolant automaton has 12 states. [2018-06-18 12:59:32,094 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 12:59:32,095 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 12:59:32,095 INFO ]: Found error trace [2018-06-18 12:59:32,095 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 12:59:32,095 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 12:59:32,095 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-18 12:59:32,095 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 12:59:32,095 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 12:59:32,096 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 12:59:32,096 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 12:59:32,096 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 12:59:32,299 INFO ]: Conjunction of SSA is unsat [2018-06-18 12:59:32,300 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 12:59:32,744 WARN ]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-18 12:59:33,026 WARN ]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2018-06-18 12:59:33,161 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 12:59:33,161 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 12:59:33,161 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 [2018-06-18 12:59:33,175 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-18 12:59:33,315 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 12:59:33,315 INFO ]: Conjunction of SSA is unsat [2018-06-18 12:59:33,327 INFO ]: Computing forward predicates... [2018-06-18 12:59:38,154 WARN ]: Spent 2.04 s on a formula simplification. DAG size of input: 230 DAG size of output: 54 [2018-06-18 12:59:40,260 WARN ]: Spent 732.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 72 [2018-06-18 12:59:41,988 WARN ]: Spent 386.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 54 [2018-06-18 12:59:42,603 WARN ]: Spent 192.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 8 [2018-06-18 12:59:44,014 WARN ]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 40 [2018-06-18 12:59:44,029 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 12:59:44,051 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 12:59:44,051 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-18 12:59:44,052 INFO ]: Interpolant automaton has 16 states [2018-06-18 12:59:44,052 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-18 12:59:44,052 INFO ]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-06-18 12:59:44,052 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-18 12:59:45,292 WARN ]: Spent 1.19 s on a formula simplification. DAG size of input: 165 DAG size of output: 132 [2018-06-18 12:59:45,532 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 18 [2018-06-18 12:59:45,880 WARN ]: Spent 319.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 34 [2018-06-18 12:59:46,824 WARN ]: Spent 817.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 122 [2018-06-18 12:59:46,872 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 12:59:46,872 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-18 12:59:46,875 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-18 12:59:46,875 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-18 12:59:46,875 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 12:59:46,876 INFO ]: With dead ends: 19 [2018-06-18 12:59:46,876 INFO ]: Without dead ends: 19 [2018-06-18 12:59:46,876 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-06-18 12:59:46,876 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-18 12:59:46,879 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-18 12:59:46,879 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-18 12:59:46,880 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-18 12:59:46,880 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-18 12:59:46,880 INFO ]: Finished accepts. word is rejected. [2018-06-18 12:59:46,880 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-18 12:59:46,880 INFO ]: Interpolant automaton has 16 states. [2018-06-18 12:59:46,880 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-18 12:59:46,881 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-18 12:59:46,881 INFO ]: Found error trace [2018-06-18 12:59:46,881 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 12:59:46,881 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 12:59:46,881 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-18 12:59:46,881 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 12:59:46,881 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 12:59:46,881 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 12:59:46,881 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 12:59:46,881 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 12:59:47,093 INFO ]: Conjunction of SSA is unsat [2018-06-18 12:59:47,094 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 12:59:47,603 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-18 12:59:48,544 WARN ]: Spent 892.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2018-06-18 12:59:49,072 WARN ]: Spent 432.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 89 [2018-06-18 12:59:49,322 WARN ]: Spent 233.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2018-06-18 12:59:49,695 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 12:59:49,695 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 12:59:49,695 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 [2018-06-18 12:59:49,706 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-18 12:59:49,867 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 12:59:49,867 INFO ]: Conjunction of SSA is unsat [2018-06-18 12:59:49,882 INFO ]: Computing forward predicates... [2018-06-18 12:59:51,579 WARN ]: Spent 665.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 56 [2018-06-18 12:59:53,213 WARN ]: Spent 725.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 83 [2018-06-18 12:59:54,666 WARN ]: Spent 702.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 79 [2018-06-18 12:59:56,066 WARN ]: Spent 365.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 54 [2018-06-18 12:59:56,289 INFO ]: Checked inductivity of 36 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 12:59:56,313 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 12:59:56,313 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2018-06-18 12:59:56,313 INFO ]: Interpolant automaton has 19 states [2018-06-18 12:59:56,313 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-18 12:59:56,313 INFO ]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2018-06-18 12:59:56,314 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 19 states. [2018-06-18 12:59:57,303 WARN ]: Spent 937.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 132 [2018-06-18 12:59:57,522 WARN ]: Spent 141.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 21 [2018-06-18 12:59:57,674 WARN ]: Spent 118.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 22 [2018-06-18 12:59:57,833 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 23 [2018-06-18 12:59:58,205 WARN ]: Spent 264.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 41 [2018-06-18 12:59:59,008 WARN ]: Spent 756.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 120 [2018-06-18 12:59:59,072 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 12:59:59,072 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-18 12:59:59,072 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-18 12:59:59,072 INFO ]: Start accepts. Automaton has 19 states. Word has length 25 [2018-06-18 12:59:59,072 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 12:59:59,073 INFO ]: With dead ends: 23 [2018-06-18 12:59:59,073 INFO ]: Without dead ends: 23 [2018-06-18 12:59:59,073 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2018-06-18 12:59:59,073 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-18 12:59:59,078 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-18 12:59:59,078 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-18 12:59:59,079 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-18 12:59:59,079 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 25 [2018-06-18 12:59:59,079 INFO ]: Finished accepts. word is rejected. [2018-06-18 12:59:59,079 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-18 12:59:59,079 INFO ]: Interpolant automaton has 19 states. [2018-06-18 12:59:59,079 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-18 12:59:59,080 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-18 12:59:59,080 INFO ]: Found error trace [2018-06-18 12:59:59,080 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 12:59:59,080 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 12:59:59,080 INFO ]: Analyzing trace with hash 800064122, now seen corresponding path program 5 times [2018-06-18 12:59:59,080 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 12:59:59,080 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 12:59:59,081 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 12:59:59,081 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 12:59:59,081 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 12:59:59,590 INFO ]: Conjunction of SSA is unsat [2018-06-18 12:59:59,591 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:00:00,442 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-18 13:00:00,833 WARN ]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-06-18 13:00:01,180 WARN ]: Spent 331.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 90 [2018-06-18 13:00:01,894 WARN ]: Spent 686.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 126 [2018-06-18 13:00:02,363 WARN ]: Spent 430.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 92 [2018-06-18 13:00:02,927 WARN ]: Spent 523.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 121 [2018-06-18 13:00:03,302 WARN ]: Spent 252.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 42 [2018-06-18 13:00:03,446 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 41 [2018-06-18 13:00:03,766 WARN ]: Spent 272.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 43 [2018-06-18 13:00:03,868 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-18 13:00:03,868 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:00:03,868 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:00:03,874 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-18 13:00:04,339 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-18 13:00:04,339 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:00:04,367 INFO ]: Computing forward predicates... [2018-06-18 13:00:05,989 WARN ]: Spent 135.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 23 Received shutdown request... [2018-06-18 13:00:06,194 INFO ]: Timeout while computing interpolants [2018-06-18 13:00:06,395 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:00:06,395 WARN ]: Verification canceled [2018-06-18 13:00:06,399 WARN ]: Timeout [2018-06-18 13:00:06,399 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 01:00:06 BoogieIcfgContainer [2018-06-18 13:00:06,399 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 13:00:06,400 INFO ]: Toolchain (without parser) took 52252.57 ms. Allocated memory was 304.1 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 232.5 MB in the beginning and 914.0 MB in the end (delta: -681.4 MB). Peak memory consumption was 860.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:00:06,401 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 304.1 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 13:00:06,401 INFO ]: ChcToBoogie took 4585.41 ms. Allocated memory was 304.1 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 232.5 MB in the beginning and 710.0 MB in the end (delta: -477.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-18 13:00:06,401 INFO ]: Boogie Preprocessor took 515.68 ms. Allocated memory is still 1.4 GB. Free memory was 710.0 MB in the beginning and 629.8 MB in the end (delta: 80.2 MB). Peak memory consumption was 80.2 MB. Max. memory is 3.6 GB. [2018-06-18 13:00:06,402 INFO ]: RCFGBuilder took 3850.85 ms. Allocated memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: 231.7 MB). Free memory was 629.8 MB in the beginning and 458.2 MB in the end (delta: 171.6 MB). Peak memory consumption was 512.2 MB. Max. memory is 3.6 GB. [2018-06-18 13:00:06,402 INFO ]: TraceAbstraction took 43290.79 ms. Allocated memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: 263.2 MB). Free memory was 458.2 MB in the beginning and 914.0 MB in the end (delta: -455.7 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 13:00:06,404 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 304.1 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 4585.41 ms. Allocated memory was 304.1 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 232.5 MB in the beginning and 710.0 MB in the end (delta: -477.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. * Boogie Preprocessor took 515.68 ms. Allocated memory is still 1.4 GB. Free memory was 710.0 MB in the beginning and 629.8 MB in the end (delta: 80.2 MB). Peak memory consumption was 80.2 MB. Max. memory is 3.6 GB. * RCFGBuilder took 3850.85 ms. Allocated memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: 231.7 MB). Free memory was 629.8 MB in the beginning and 458.2 MB in the end (delta: 171.6 MB). Peak memory consumption was 512.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 43290.79 ms. Allocated memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: 263.2 MB). Free memory was 458.2 MB in the beginning and 914.0 MB in the end (delta: -455.7 MB). There was no memory consumed. 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 34 with TraceHistMax 7, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 4 quantified variables from 11 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 43.2s OverallTime, 6 OverallIterations, 7 TraceHistogramMax, 6.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 77 SDslu, 211 SDs, 0 SdLazy, 173 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 19.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=5, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 26.0s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 75800 SizeOfPredicates, 1147 NumberOfNonLiveVariables, 1496 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 42/140 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/simple_array_inversion-4.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_13-00-06-416.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_array_inversion-4.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_13-00-06-416.csv Completed graceful shutdown