java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/car_5.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:57:55,287 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:57:55,289 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:57:55,304 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:57:55,304 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:57:55,305 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:57:55,306 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:57:55,313 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:57:55,316 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:57:55,316 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:57:55,317 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:57:55,317 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:57:55,318 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:57:55,319 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:57:55,320 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:57:55,321 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:57:55,322 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:57:55,324 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:57:55,326 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:57:55,327 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:57:55,328 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:57:55,330 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:57:55,331 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:57:55,331 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:57:55,332 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:57:55,333 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:57:55,333 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:57:55,334 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:57:55,335 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:57:55,335 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:57:55,336 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:57:55,337 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:57:55,337 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:57:55,338 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:57:55,338 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:57:55,339 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 15:57:55,351 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:57:55,352 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:57:55,352 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:57:55,352 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:57:55,353 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:57:55,353 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:57:55,354 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:57:55,354 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:57:55,354 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:57:55,354 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:57:55,354 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:57:55,355 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:57:55,355 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:57:55,355 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:57:55,355 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:57:55,355 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:57:55,356 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:57:55,356 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:57:55,356 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:57:55,357 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:57:55,358 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:57:55,396 INFO ]: Repository-Root is: /tmp [2018-06-22 15:57:55,408 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:57:55,411 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:57:55,413 INFO ]: Initializing SmtParser... [2018-06-22 15:57:55,413 INFO ]: SmtParser initialized [2018-06-22 15:57:55,415 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_5.smt2 [2018-06-22 15:57:55,416 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 15:57:55,505 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_5.smt2 unknown [2018-06-22 15:57:55,855 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_5.smt2 [2018-06-22 15:57:55,868 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:57:55,874 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:57:55,874 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:57:55,874 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:57:55,875 INFO ]: ChcToBoogie initialized [2018-06-22 15:57:55,878 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:57:55" (1/1) ... [2018-06-22 15:57:55,923 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:55 Unit [2018-06-22 15:57:55,923 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:57:55,923 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:57:55,923 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:57:55,923 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:57:55,942 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:55" (1/1) ... [2018-06-22 15:57:55,943 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:55" (1/1) ... [2018-06-22 15:57:55,954 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:55" (1/1) ... [2018-06-22 15:57:55,954 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:55" (1/1) ... [2018-06-22 15:57:55,960 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:55" (1/1) ... [2018-06-22 15:57:55,962 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:55" (1/1) ... [2018-06-22 15:57:55,979 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:55" (1/1) ... [2018-06-22 15:57:55,981 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:57:55,982 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:57:55,982 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:57:55,982 INFO ]: RCFGBuilder initialized [2018-06-22 15:57:55,983 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:55" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 15:57:56,000 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:57:56,000 INFO ]: Found specification of procedure False [2018-06-22 15:57:56,000 INFO ]: Found implementation of procedure False [2018-06-22 15:57:56,000 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:57:56,000 INFO ]: Found specification of procedure state [2018-06-22 15:57:56,000 INFO ]: Found implementation of procedure state [2018-06-22 15:57:56,000 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:57:56,000 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:57:56,000 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:57:56,338 INFO ]: Using library mode [2018-06-22 15:57:56,338 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:57:56 BoogieIcfgContainer [2018-06-22 15:57:56,338 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:57:56,340 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:57:56,340 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:57:56,348 INFO ]: TraceAbstraction initialized [2018-06-22 15:57:56,348 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:57:55" (1/3) ... [2018-06-22 15:57:56,349 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e97f3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:57:56, skipping insertion in model container [2018-06-22 15:57:56,349 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:55" (2/3) ... [2018-06-22 15:57:56,349 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e97f3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:57:56, skipping insertion in model container [2018-06-22 15:57:56,349 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:57:56" (3/3) ... [2018-06-22 15:57:56,352 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:57:56,359 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:57:56,366 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:57:56,400 INFO ]: Using default assertion order modulation [2018-06-22 15:57:56,400 INFO ]: Interprodecural is true [2018-06-22 15:57:56,400 INFO ]: Hoare is false [2018-06-22 15:57:56,401 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:57:56,401 INFO ]: Backedges is TWOTRACK [2018-06-22 15:57:56,401 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:57:56,401 INFO ]: Difference is false [2018-06-22 15:57:56,401 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:57:56,401 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:57:56,414 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:57:56,424 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:57:56,424 INFO ]: Found error trace [2018-06-22 15:57:56,425 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:57:56,425 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:57:56,430 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 15:57:56,432 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:57:56,433 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:57:56,471 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:56,471 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:57:56,471 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:56,535 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:56,675 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:57:56,677 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:57:56,677 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:57:56,678 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:57:56,688 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:57:56,689 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:57:56,690 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:57:56,799 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:57:56,799 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:57:56,799 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:57:56,801 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:57:56,801 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:57:56,811 INFO ]: With dead ends: 13 [2018-06-22 15:57:56,811 INFO ]: Without dead ends: 13 [2018-06-22 15:57:56,812 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:57:56,824 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:57:56,843 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:57:56,844 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:57:56,845 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:57:56,846 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:57:56,846 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:57:56,846 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:57:56,846 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:57:56,846 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:57:56,847 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:57:56,847 INFO ]: Found error trace [2018-06-22 15:57:56,848 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:57:56,848 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:57:56,848 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 15:57:56,848 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:57:56,848 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:57:56,849 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:56,849 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:57:56,849 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:56,924 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:57,302 WARN ]: Spent 204.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 21 [2018-06-22 15:57:57,488 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:57:57,488 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:57:57,488 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:57:57,496 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:57:57,621 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:57,631 INFO ]: Computing forward predicates... [2018-06-22 15:57:58,051 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 5 [2018-06-22 15:57:58,243 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:57:58,277 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:57:58,277 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 15:57:58,277 INFO ]: Interpolant automaton has 8 states [2018-06-22 15:57:58,278 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 15:57:58,278 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 15:57:58,278 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 15:57:58,623 WARN ]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-06-22 15:57:58,843 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:57:58,843 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:57:58,843 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:57:58,843 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 15:57:58,843 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:57:58,844 INFO ]: With dead ends: 15 [2018-06-22 15:57:58,844 INFO ]: Without dead ends: 15 [2018-06-22 15:57:58,846 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 15:57:58,846 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:57:58,848 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:57:58,848 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:57:58,851 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:57:58,851 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:57:58,851 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:57:58,851 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:57:58,851 INFO ]: Interpolant automaton has 8 states. [2018-06-22 15:57:58,851 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:57:58,852 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:57:58,852 INFO ]: Found error trace [2018-06-22 15:57:58,852 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:57:58,852 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:57:58,852 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 15:57:58,852 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:57:58,852 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:57:58,853 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:58,853 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:57:58,853 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:58,929 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:59,227 WARN ]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 15:57:59,363 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:57:59,363 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:57:59,363 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:57:59,382 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:57:59,471 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:57:59,471 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:59,476 INFO ]: Computing forward predicates... [2018-06-22 15:57:59,897 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:57:59,932 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:57:59,932 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 15:57:59,932 INFO ]: Interpolant automaton has 12 states [2018-06-22 15:57:59,932 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 15:57:59,932 INFO ]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:57:59,932 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 15:58:00,254 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-06-22 15:58:00,438 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:58:00,438 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:58:00,439 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:58:00,439 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 15:58:00,439 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:58:00,440 INFO ]: With dead ends: 17 [2018-06-22 15:58:00,440 INFO ]: Without dead ends: 17 [2018-06-22 15:58:00,440 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:58:00,440 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:58:00,443 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:58:00,443 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:58:00,444 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:58:00,444 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:58:00,444 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:58:00,444 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:58:00,444 INFO ]: Interpolant automaton has 12 states. [2018-06-22 15:58:00,444 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:58:00,445 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:58:00,445 INFO ]: Found error trace [2018-06-22 15:58:00,445 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:58:00,445 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:58:00,445 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 15:58:00,446 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:58:00,446 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:58:00,446 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:00,446 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:58:00,446 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:00,488 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:00,895 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:58:00,895 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:58:00,895 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) [2018-06-22 15:58:00,912 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:58:01,011 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:58:01,011 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:01,016 INFO ]: Computing forward predicates... [2018-06-22 15:58:01,423 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:58:01,444 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:58:01,444 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 15:58:01,444 INFO ]: Interpolant automaton has 16 states [2018-06-22 15:58:01,444 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 15:58:01,445 INFO ]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:58:01,445 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 15:58:01,612 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-06-22 15:58:01,913 WARN ]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-06-22 15:58:02,060 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:58:02,060 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 15:58:02,061 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 15:58:02,061 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 15:58:02,061 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:58:02,062 INFO ]: With dead ends: 19 [2018-06-22 15:58:02,062 INFO ]: Without dead ends: 19 [2018-06-22 15:58:02,062 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-06-22 15:58:02,062 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 15:58:02,066 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 15:58:02,066 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 15:58:02,066 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 15:58:02,066 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 15:58:02,066 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:58:02,066 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 15:58:02,066 INFO ]: Interpolant automaton has 16 states. [2018-06-22 15:58:02,066 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 15:58:02,067 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 15:58:02,067 INFO ]: Found error trace [2018-06-22 15:58:02,067 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:58:02,067 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:58:02,067 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 15:58:02,068 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:58:02,068 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:58:02,068 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:02,068 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:58:02,068 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:02,129 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:02,576 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:58:02,576 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:58:02,576 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 [2018-06-22 15:58:02,586 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 15:58:02,675 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 15:58:02,675 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:02,680 INFO ]: Computing forward predicates... [2018-06-22 15:58:03,426 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:58:03,446 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:58:03,446 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2018-06-22 15:58:03,446 INFO ]: Interpolant automaton has 20 states [2018-06-22 15:58:03,446 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 15:58:03,446 INFO ]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2018-06-22 15:58:03,446 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 15:58:03,651 WARN ]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2018-06-22 15:58:03,809 WARN ]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2018-06-22 15:58:04,055 WARN ]: Spent 220.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2018-06-22 15:58:04,298 WARN ]: Spent 220.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2018-06-22 15:58:04,449 WARN ]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2018-06-22 15:58:04,481 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:58:04,481 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 15:58:04,481 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 15:58:04,481 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 15:58:04,481 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:58:04,482 INFO ]: With dead ends: 21 [2018-06-22 15:58:04,482 INFO ]: Without dead ends: 21 [2018-06-22 15:58:04,482 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2018-06-22 15:58:04,483 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 15:58:04,485 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 15:58:04,486 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 15:58:04,487 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 15:58:04,487 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 15:58:04,487 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:58:04,487 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 15:58:04,487 INFO ]: Interpolant automaton has 20 states. [2018-06-22 15:58:04,487 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 15:58:04,488 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 15:58:04,488 INFO ]: Found error trace [2018-06-22 15:58:04,488 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:58:04,488 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:58:04,488 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 15:58:04,488 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:58:04,488 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:58:04,489 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:04,489 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:58:04,489 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:04,545 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:05,034 WARN ]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-06-22 15:58:05,594 WARN ]: Spent 483.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2018-06-22 15:58:05,876 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:58:05,876 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:58:05,876 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 [2018-06-22 15:58:05,882 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 15:58:06,007 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 15:58:06,007 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:06,013 INFO ]: Computing forward predicates... [2018-06-22 15:58:06,292 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-06-22 15:58:07,520 WARN ]: Spent 369.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-06-22 15:58:07,569 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:58:07,601 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:58:07,601 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2018-06-22 15:58:07,602 INFO ]: Interpolant automaton has 24 states [2018-06-22 15:58:07,602 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 15:58:07,602 INFO ]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2018-06-22 15:58:07,602 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 24 states. [2018-06-22 15:58:08,284 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2018-06-22 15:58:08,437 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2018-06-22 15:58:08,632 WARN ]: Spent 163.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2018-06-22 15:58:08,820 WARN ]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2018-06-22 15:58:09,118 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2018-06-22 15:58:09,279 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:58:09,279 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 15:58:09,280 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 15:58:09,280 INFO ]: Start accepts. Automaton has 24 states. Word has length 29 [2018-06-22 15:58:09,280 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:58:09,281 INFO ]: With dead ends: 23 [2018-06-22 15:58:09,281 INFO ]: Without dead ends: 23 [2018-06-22 15:58:09,281 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2018-06-22 15:58:09,281 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 15:58:09,284 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 15:58:09,284 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 15:58:09,285 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 15:58:09,285 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-22 15:58:09,285 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:58:09,285 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 15:58:09,285 INFO ]: Interpolant automaton has 24 states. [2018-06-22 15:58:09,285 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 15:58:09,286 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 15:58:09,286 INFO ]: Found error trace [2018-06-22 15:58:09,286 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:58:09,286 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:58:09,286 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 6 times [2018-06-22 15:58:09,287 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:58:09,287 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:58:09,287 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:09,287 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:58:09,287 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:09,354 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:09,839 WARN ]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-06-22 15:58:10,492 WARN ]: Spent 579.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2018-06-22 15:58:11,414 WARN ]: Spent 185.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 11 [2018-06-22 15:58:11,458 INFO ]: Checked inductivity of 78 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 15:58:11,458 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:58:11,458 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:58:11,464 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 15:58:11,576 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-22 15:58:11,576 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:11,583 INFO ]: Computing forward predicates... [2018-06-22 15:58:12,298 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 15:58:12,328 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:58:12,328 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2018-06-22 15:58:12,329 INFO ]: Interpolant automaton has 28 states [2018-06-22 15:58:12,329 INFO ]: Constructing interpolant automaton starting with 28 interpolants. [2018-06-22 15:58:12,329 INFO ]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2018-06-22 15:58:12,329 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 28 states. [2018-06-22 15:58:12,620 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 78 [2018-06-22 15:58:12,930 WARN ]: Spent 170.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2018-06-22 15:58:13,148 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 84 [2018-06-22 15:58:13,371 WARN ]: Spent 194.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 88 [2018-06-22 15:58:13,852 WARN ]: Spent 448.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2018-06-22 15:58:14,064 WARN ]: Spent 173.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2018-06-22 15:58:14,305 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2018-06-22 15:58:14,342 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:58:14,399 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 15:58:14,399 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 15:58:14,399 INFO ]: Start accepts. Automaton has 28 states. Word has length 33 [2018-06-22 15:58:14,400 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:58:14,400 INFO ]: With dead ends: 25 [2018-06-22 15:58:14,400 INFO ]: Without dead ends: 25 [2018-06-22 15:58:14,401 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=239, Invalid=1021, Unknown=0, NotChecked=0, Total=1260 [2018-06-22 15:58:14,401 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 15:58:14,404 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 15:58:14,404 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 15:58:14,405 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 15:58:14,405 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 33 [2018-06-22 15:58:14,405 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:58:14,405 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 15:58:14,405 INFO ]: Interpolant automaton has 28 states. [2018-06-22 15:58:14,405 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 15:58:14,406 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 15:58:14,406 INFO ]: Found error trace [2018-06-22 15:58:14,406 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:58:14,407 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:58:14,407 INFO ]: Analyzing trace with hash -1494134477, now seen corresponding path program 7 times [2018-06-22 15:58:14,407 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:58:14,407 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:58:14,407 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:14,407 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:58:14,407 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:14,480 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:15,709 INFO ]: Checked inductivity of 105 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 15:58:15,709 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:58:15,709 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:58:15,715 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:58:15,835 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:15,843 INFO ]: Computing forward predicates... [2018-06-22 15:58:16,665 INFO ]: Checked inductivity of 105 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 15:58:16,686 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:58:16,687 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 29 [2018-06-22 15:58:16,687 INFO ]: Interpolant automaton has 29 states [2018-06-22 15:58:16,687 INFO ]: Constructing interpolant automaton starting with 29 interpolants. [2018-06-22 15:58:16,687 INFO ]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2018-06-22 15:58:16,688 INFO ]: Start difference. First operand 25 states and 26 transitions. Second operand 29 states. [2018-06-22 15:58:16,972 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2018-06-22 15:58:17,256 WARN ]: Spent 183.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2018-06-22 15:58:17,526 WARN ]: Spent 243.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2018-06-22 15:58:17,783 WARN ]: Spent 228.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2018-06-22 15:58:18,028 WARN ]: Spent 213.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2018-06-22 15:58:18,315 WARN ]: Spent 200.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2018-06-22 15:58:18,549 WARN ]: Spent 196.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2018-06-22 15:58:18,785 WARN ]: Spent 195.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2018-06-22 15:58:19,025 WARN ]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2018-06-22 15:58:19,064 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:58:19,064 INFO ]: Finished difference Result 29 states and 30 transitions. [2018-06-22 15:58:19,065 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 15:58:19,065 INFO ]: Start accepts. Automaton has 29 states. Word has length 37 [2018-06-22 15:58:19,065 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:58:19,066 INFO ]: With dead ends: 29 [2018-06-22 15:58:19,066 INFO ]: Without dead ends: 29 [2018-06-22 15:58:19,066 INFO ]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=318, Invalid=1164, Unknown=0, NotChecked=0, Total=1482 [2018-06-22 15:58:19,066 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 15:58:19,069 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 15:58:19,070 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 15:58:19,070 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-06-22 15:58:19,070 INFO ]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 37 [2018-06-22 15:58:19,071 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:58:19,071 INFO ]: Abstraction has 29 states and 30 transitions. [2018-06-22 15:58:19,071 INFO ]: Interpolant automaton has 29 states. [2018-06-22 15:58:19,071 INFO ]: Start isEmpty. Operand 29 states and 30 transitions. [2018-06-22 15:58:19,072 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 15:58:19,072 INFO ]: Found error trace [2018-06-22 15:58:19,072 INFO ]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:58:19,072 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:58:19,072 INFO ]: Analyzing trace with hash 996918775, now seen corresponding path program 8 times [2018-06-22 15:58:19,072 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:58:19,072 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:58:19,073 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:19,073 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:58:19,073 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:19,202 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:19,971 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 24 [2018-06-22 15:58:20,314 WARN ]: Spent 225.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 28 [2018-06-22 15:58:20,647 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 43 [2018-06-22 15:58:20,834 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 50 [2018-06-22 15:58:21,157 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 36 [2018-06-22 15:58:21,636 WARN ]: Spent 180.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 31 [2018-06-22 15:58:21,907 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 16 [2018-06-22 15:58:22,154 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 16 [2018-06-22 15:58:22,462 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 11 [2018-06-22 15:58:22,491 INFO ]: Checked inductivity of 171 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-06-22 15:58:22,491 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:58:22,491 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:58:22,497 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:58:22,676 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:58:22,676 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:22,684 INFO ]: Computing forward predicates... [2018-06-22 15:58:23,779 INFO ]: Checked inductivity of 171 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-06-22 15:58:23,800 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:58:23,800 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 35 [2018-06-22 15:58:23,800 INFO ]: Interpolant automaton has 35 states [2018-06-22 15:58:23,800 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-22 15:58:23,801 INFO ]: CoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 15:58:23,801 INFO ]: Start difference. First operand 29 states and 30 transitions. Second operand 35 states. [2018-06-22 15:58:24,157 WARN ]: Spent 269.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 102 [2018-06-22 15:58:24,490 WARN ]: Spent 238.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 90 [2018-06-22 15:58:25,026 WARN ]: Spent 455.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 105 [2018-06-22 15:58:25,599 WARN ]: Spent 502.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 109 [2018-06-22 15:58:25,955 WARN ]: Spent 312.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 106 [2018-06-22 15:58:26,296 WARN ]: Spent 293.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 106 [2018-06-22 15:58:26,633 WARN ]: Spent 287.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 103 [2018-06-22 15:58:26,969 WARN ]: Spent 276.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 100 [2018-06-22 15:58:27,313 WARN ]: Spent 284.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 100 [2018-06-22 15:58:27,641 WARN ]: Spent 268.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2018-06-22 15:58:27,966 WARN ]: Spent 259.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 94 [2018-06-22 15:58:28,028 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:58:28,028 INFO ]: Finished difference Result 33 states and 34 transitions. [2018-06-22 15:58:28,028 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 15:58:28,028 INFO ]: Start accepts. Automaton has 35 states. Word has length 45 [2018-06-22 15:58:28,028 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:58:28,029 INFO ]: With dead ends: 33 [2018-06-22 15:58:28,029 INFO ]: Without dead ends: 33 [2018-06-22 15:58:28,030 INFO ]: 0 DeclaredPredicates, 78 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=443, Invalid=1719, Unknown=0, NotChecked=0, Total=2162 [2018-06-22 15:58:28,030 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-22 15:58:28,034 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-06-22 15:58:28,034 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-22 15:58:28,035 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-06-22 15:58:28,035 INFO ]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 45 [2018-06-22 15:58:28,035 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:58:28,035 INFO ]: Abstraction has 33 states and 34 transitions. [2018-06-22 15:58:28,035 INFO ]: Interpolant automaton has 35 states. [2018-06-22 15:58:28,035 INFO ]: Start isEmpty. Operand 33 states and 34 transitions. [2018-06-22 15:58:28,036 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-22 15:58:28,036 INFO ]: Found error trace [2018-06-22 15:58:28,037 INFO ]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:58:28,037 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:58:28,037 INFO ]: Analyzing trace with hash 1955719355, now seen corresponding path program 9 times [2018-06-22 15:58:28,037 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:58:28,037 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:58:28,037 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:28,037 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:58:28,037 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:28,381 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:31,332 WARN ]: Spent 971.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2018-06-22 15:58:32,484 WARN ]: Spent 442.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 53 [2018-06-22 15:58:32,623 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2018-06-22 15:58:32,866 WARN ]: Spent 227.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2018-06-22 15:58:34,234 WARN ]: Spent 1.29 s on a formula simplification. DAG size of input: 374 DAG size of output: 50 [2018-06-22 15:58:34,741 WARN ]: Spent 454.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 51 [2018-06-22 15:58:35,759 WARN ]: Spent 926.00 ms on a formula simplification. DAG size of input: 390 DAG size of output: 50 [2018-06-22 15:58:36,462 WARN ]: Spent 626.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 50 [2018-06-22 15:58:36,677 WARN ]: Spent 193.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2018-06-22 15:58:39,698 WARN ]: Spent 2.79 s on a formula simplification. DAG size of input: 287 DAG size of output: 47 [2018-06-22 15:58:42,172 WARN ]: Spent 2.28 s on a formula simplification. DAG size of input: 301 DAG size of output: 50 [2018-06-22 15:58:44,503 WARN ]: Spent 2.11 s on a formula simplification. DAG size of input: 273 DAG size of output: 30 [2018-06-22 15:58:48,159 WARN ]: Spent 3.37 s on a formula simplification. DAG size of input: 464 DAG size of output: 43 [2018-06-22 15:58:50,727 WARN ]: Spent 2.26 s on a formula simplification. DAG size of input: 366 DAG size of output: 35 [2018-06-22 15:58:53,437 WARN ]: Spent 2.40 s on a formula simplification. DAG size of input: 674 DAG size of output: 40 [2018-06-22 15:58:56,932 WARN ]: Spent 3.01 s on a formula simplification. DAG size of input: 1107 DAG size of output: 30 Received shutdown request... [2018-06-22 15:59:00,376 WARN ]: Removed 16 from assertion stack [2018-06-22 15:59:00,376 WARN ]: Verification canceled [2018-06-22 15:59:00,381 WARN ]: Timeout [2018-06-22 15:59:00,381 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:59:00 BoogieIcfgContainer [2018-06-22 15:59:00,381 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:59:00,382 INFO ]: Toolchain (without parser) took 64512.98 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 952.6 MB). Free memory was 257.9 MB in the beginning and 881.5 MB in the end (delta: -623.6 MB). Peak memory consumption was 955.4 MB. Max. memory is 3.6 GB. [2018-06-22 15:59:00,382 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:59:00,382 INFO ]: ChcToBoogie took 48.62 ms. Allocated memory is still 309.3 MB. Free memory was 257.9 MB in the beginning and 255.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:59:00,383 INFO ]: Boogie Preprocessor took 57.93 ms. Allocated memory is still 309.3 MB. Free memory was 255.9 MB in the beginning and 253.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:59:00,383 INFO ]: RCFGBuilder took 356.50 ms. Allocated memory is still 309.3 MB. Free memory was 253.9 MB in the beginning and 237.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 3.6 GB. [2018-06-22 15:59:00,383 INFO ]: TraceAbstraction took 64041.19 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 952.6 MB). Free memory was 237.7 MB in the beginning and 881.5 MB in the end (delta: -643.7 MB). Peak memory consumption was 935.3 MB. Max. memory is 3.6 GB. [2018-06-22 15:59:00,386 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 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 48.62 ms. Allocated memory is still 309.3 MB. Free memory was 257.9 MB in the beginning and 255.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 57.93 ms. Allocated memory is still 309.3 MB. Free memory was 255.9 MB in the beginning and 253.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 356.50 ms. Allocated memory is still 309.3 MB. Free memory was 253.9 MB in the beginning and 237.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64041.19 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 952.6 MB). Free memory was 237.7 MB in the beginning and 881.5 MB in the end (delta: -643.7 MB). Peak memory consumption was 935.3 MB. 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 54 with TraceHistMax 12, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 846. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 63.9s OverallTime, 10 OverallIterations, 12 TraceHistogramMax, 13.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 98 SDtfs, 419 SDslu, 771 SDs, 0 SdLazy, 598 SolverSat, 500 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 376 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 22.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=9, 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 16.3s InterpolantComputationTime, 449 NumberOfCodeBlocks, 449 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 432 ConstructedInterpolants, 0 QuantifiedInterpolants, 140400 SizeOfPredicates, 389 NumberOfNonLiveVariables, 5544 ConjunctsInSsa, 397 ConjunctsInUnsatCore, 17 InterpolantComputations, 1 PerfectInterpolantSequences, 279/958 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/car_5.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-59-00-396.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_5.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-59-00-396.csv Completed graceful shutdown