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_e7_244.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:57:23,627 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:57:23,629 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:57:23,640 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:57:23,641 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:57:23,641 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:57:23,643 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:57:23,644 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:57:23,646 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:57:23,647 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:57:23,648 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:57:23,648 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:57:23,649 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:57:23,650 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:57:23,650 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:57:23,651 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:57:23,653 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:57:23,655 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:57:23,657 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:57:23,658 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:57:23,659 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:57:23,661 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:57:23,662 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:57:23,662 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:57:23,663 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:57:23,664 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:57:23,665 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:57:23,665 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:57:23,666 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:57:23,667 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:57:23,667 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:57:23,668 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:57:23,668 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:57:23,669 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:57:23,670 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:57:23,670 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 15:57:23,684 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:57:23,684 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:57:23,684 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:57:23,685 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:57:23,686 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:57:23,686 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:57:23,686 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:57:23,686 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:57:23,687 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:57:23,687 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:57:23,687 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:57:23,688 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:57:23,688 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:57:23,688 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:57:23,688 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:57:23,688 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:57:23,689 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:57:23,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:57:23,689 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:57:23,691 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:57:23,691 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:57:23,733 INFO ]: Repository-Root is: /tmp [2018-06-22 15:57:23,750 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:57:23,756 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:57:23,758 INFO ]: Initializing SmtParser... [2018-06-22 15:57:23,758 INFO ]: SmtParser initialized [2018-06-22 15:57:23,759 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_5_e7_244.smt2 [2018-06-22 15:57:23,760 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 15:57:23,850 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_5_e7_244.smt2 unknown [2018-06-22 15:57:24,167 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_5_e7_244.smt2 [2018-06-22 15:57:24,172 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:57:24,177 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:57:24,178 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:57:24,178 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:57:24,178 INFO ]: ChcToBoogie initialized [2018-06-22 15:57:24,184 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:57:24" (1/1) ... [2018-06-22 15:57:24,249 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:24 Unit [2018-06-22 15:57:24,249 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:57:24,250 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:57:24,250 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:57:24,250 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:57:24,272 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:24" (1/1) ... [2018-06-22 15:57:24,272 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:24" (1/1) ... [2018-06-22 15:57:24,291 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:24" (1/1) ... [2018-06-22 15:57:24,291 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:24" (1/1) ... [2018-06-22 15:57:24,295 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:24" (1/1) ... [2018-06-22 15:57:24,304 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:24" (1/1) ... [2018-06-22 15:57:24,306 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:24" (1/1) ... [2018-06-22 15:57:24,308 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:57:24,309 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:57:24,309 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:57:24,309 INFO ]: RCFGBuilder initialized [2018-06-22 15:57:24,310 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:24" (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 15:57:24,334 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:57:24,334 INFO ]: Found specification of procedure False [2018-06-22 15:57:24,334 INFO ]: Found implementation of procedure False [2018-06-22 15:57:24,334 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:57:24,334 INFO ]: Found specification of procedure state [2018-06-22 15:57:24,334 INFO ]: Found implementation of procedure state [2018-06-22 15:57:24,334 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:57:24,334 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:57:24,334 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 15:57:24,741 INFO ]: Using library mode [2018-06-22 15:57:24,742 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:57:24 BoogieIcfgContainer [2018-06-22 15:57:24,742 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:57:24,743 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:57:24,743 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:57:24,746 INFO ]: TraceAbstraction initialized [2018-06-22 15:57:24,747 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:57:24" (1/3) ... [2018-06-22 15:57:24,747 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 03:57:24, skipping insertion in model container [2018-06-22 15:57:24,748 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:57:24" (2/3) ... [2018-06-22 15:57:24,748 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 03:57:24, skipping insertion in model container [2018-06-22 15:57:24,748 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:57:24" (3/3) ... [2018-06-22 15:57:24,750 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:57:24,758 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:57:24,768 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:57:24,817 INFO ]: Using default assertion order modulation [2018-06-22 15:57:24,818 INFO ]: Interprodecural is true [2018-06-22 15:57:24,818 INFO ]: Hoare is false [2018-06-22 15:57:24,818 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:57:24,818 INFO ]: Backedges is TWOTRACK [2018-06-22 15:57:24,818 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:57:24,818 INFO ]: Difference is false [2018-06-22 15:57:24,819 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:57:24,819 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:57:24,830 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:57:24,843 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:57:24,843 INFO ]: Found error trace [2018-06-22 15:57:24,844 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:57:24,844 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:57:24,848 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 15:57:24,850 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:57:24,850 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:57:24,881 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:24,881 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:57:24,881 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:24,952 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:25,143 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:57:25,146 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:57:25,146 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:57:25,148 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:57:25,160 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:57:25,160 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:57:25,162 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:57:25,285 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:57:25,285 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:57:25,286 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:57:25,287 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:57:25,288 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:57:25,297 INFO ]: With dead ends: 13 [2018-06-22 15:57:25,298 INFO ]: Without dead ends: 13 [2018-06-22 15:57:25,299 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 15:57:25,312 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:57:25,332 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:57:25,337 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:57:25,338 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:57:25,340 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:57:25,340 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:57:25,340 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:57:25,340 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:57:25,340 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:57:25,342 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:57:25,342 INFO ]: Found error trace [2018-06-22 15:57:25,342 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:57:25,342 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:57:25,342 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 15:57:25,342 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:57:25,342 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:57:25,344 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:25,344 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:57:25,344 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:25,416 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:25,829 WARN ]: Spent 253.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 21 [2018-06-22 15:57:25,919 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:57:25,919 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:57:25,919 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 15:57:25,936 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:57:26,047 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:26,056 INFO ]: Computing forward predicates... [2018-06-22 15:57:26,308 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:57:26,342 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:57:26,342 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 15:57:26,342 INFO ]: Interpolant automaton has 8 states [2018-06-22 15:57:26,342 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 15:57:26,342 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 15:57:26,342 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 15:57:26,826 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:57:26,826 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:57:26,827 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:57:26,827 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 15:57:26,827 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:57:26,827 INFO ]: With dead ends: 15 [2018-06-22 15:57:26,828 INFO ]: Without dead ends: 15 [2018-06-22 15:57:26,828 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 15:57:26,828 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:57:26,831 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:57:26,831 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:57:26,831 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:57:26,832 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:57:26,832 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:57:26,832 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:57:26,832 INFO ]: Interpolant automaton has 8 states. [2018-06-22 15:57:26,832 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:57:26,832 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:57:26,832 INFO ]: Found error trace [2018-06-22 15:57:26,832 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:57:26,833 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:57:26,833 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 15:57:26,833 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:57:26,833 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:57:26,834 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:26,834 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:57:26,834 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:26,905 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:27,417 WARN ]: Spent 362.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2018-06-22 15:57:27,469 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:57:27,470 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:57:27,504 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 15:57:27,510 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:57:27,605 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:57:27,605 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:27,611 INFO ]: Computing forward predicates... [2018-06-22 15:57:28,352 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:57:28,371 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:57:28,371 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 15:57:28,372 INFO ]: Interpolant automaton has 12 states [2018-06-22 15:57:28,372 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 15:57:28,372 INFO ]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:57:28,372 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 15:57:28,566 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-06-22 15:57:28,714 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:57:28,714 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:57:28,714 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:57:28,714 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 15:57:28,715 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:57:28,715 INFO ]: With dead ends: 17 [2018-06-22 15:57:28,715 INFO ]: Without dead ends: 17 [2018-06-22 15:57:28,716 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:57:28,716 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:57:28,718 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:57:28,718 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:57:28,719 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:57:28,719 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:57:28,719 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:57:28,719 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:57:28,720 INFO ]: Interpolant automaton has 12 states. [2018-06-22 15:57:28,720 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:57:28,720 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:57:28,720 INFO ]: Found error trace [2018-06-22 15:57:28,720 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:57:28,720 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:57:28,721 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 15:57:28,721 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:57:28,721 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:57:28,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:28,721 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:57:28,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:28,775 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:29,315 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:57:29,316 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:57:29,316 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:57:29,327 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 15:57:29,431 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:57:29,431 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:29,437 INFO ]: Computing forward predicates... [2018-06-22 15:57:29,983 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:57:30,016 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:57:30,016 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 15:57:30,017 INFO ]: Interpolant automaton has 16 states [2018-06-22 15:57:30,017 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 15:57:30,017 INFO ]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:57:30,017 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 15:57:30,210 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2018-06-22 15:57:30,482 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-06-22 15:57:30,611 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-06-22 15:57:30,737 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:57:30,737 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 15:57:30,738 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 15:57:30,738 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 15:57:30,738 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:57:30,739 INFO ]: With dead ends: 21 [2018-06-22 15:57:30,739 INFO ]: Without dead ends: 21 [2018-06-22 15:57:30,739 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2018-06-22 15:57:30,739 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 15:57:30,742 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 15:57:30,742 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 15:57:30,743 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 15:57:30,743 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-06-22 15:57:30,743 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:57:30,743 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 15:57:30,743 INFO ]: Interpolant automaton has 16 states. [2018-06-22 15:57:30,743 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 15:57:30,744 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 15:57:30,744 INFO ]: Found error trace [2018-06-22 15:57:30,744 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:57:30,744 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:57:30,744 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 4 times [2018-06-22 15:57:30,745 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:57:30,745 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:57:30,745 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:30,745 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:57:30,745 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:30,820 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:31,500 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:57:31,500 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:57:31,500 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 15:57:31,511 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 15:57:31,605 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 15:57:31,606 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:31,611 INFO ]: Computing forward predicates... [2018-06-22 15:57:31,970 WARN ]: Spent 135.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 18 [2018-06-22 15:57:32,390 INFO ]: Checked inductivity of 55 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 15:57:32,412 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:57:32,412 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 23 [2018-06-22 15:57:32,412 INFO ]: Interpolant automaton has 23 states [2018-06-22 15:57:32,412 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-22 15:57:32,412 INFO ]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2018-06-22 15:57:32,412 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 23 states. [2018-06-22 15:57:32,622 WARN ]: Spent 150.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2018-06-22 15:57:32,825 WARN ]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-06-22 15:57:33,037 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2018-06-22 15:57:33,299 WARN ]: Spent 163.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2018-06-22 15:57:33,470 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2018-06-22 15:57:33,680 WARN ]: Spent 183.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2018-06-22 15:57:33,724 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:57:33,724 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 15:57:33,726 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 15:57:33,726 INFO ]: Start accepts. Automaton has 23 states. Word has length 29 [2018-06-22 15:57:33,726 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:57:33,727 INFO ]: With dead ends: 23 [2018-06-22 15:57:33,727 INFO ]: Without dead ends: 23 [2018-06-22 15:57:33,727 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2018-06-22 15:57:33,727 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 15:57:33,731 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 15:57:33,731 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 15:57:33,732 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 15:57:33,732 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-22 15:57:33,733 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:57:33,733 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 15:57:33,733 INFO ]: Interpolant automaton has 23 states. [2018-06-22 15:57:33,733 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 15:57:33,733 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 15:57:33,733 INFO ]: Found error trace [2018-06-22 15:57:33,733 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:57:33,734 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:57:33,734 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 5 times [2018-06-22 15:57:33,734 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:57:33,734 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:57:33,734 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:33,734 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:57:33,734 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:33,809 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:34,258 WARN ]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-06-22 15:57:34,661 WARN ]: Spent 327.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-06-22 15:57:35,325 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 15:57:35,325 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:57:35,325 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 15:57:35,332 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 15:57:35,452 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-22 15:57:35,452 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:35,462 INFO ]: Computing forward predicates... [2018-06-22 15:57:37,123 WARN ]: Spent 960.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-06-22 15:57:37,603 INFO ]: Checked inductivity of 78 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 15:57:37,622 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:57:37,623 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 27 [2018-06-22 15:57:37,623 INFO ]: Interpolant automaton has 27 states [2018-06-22 15:57:37,623 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-22 15:57:37,623 INFO ]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2018-06-22 15:57:37,623 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 27 states. [2018-06-22 15:57:37,955 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2018-06-22 15:57:38,163 WARN ]: Spent 173.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2018-06-22 15:57:38,371 WARN ]: Spent 159.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2018-06-22 15:57:38,626 WARN ]: Spent 223.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2018-06-22 15:57:38,796 WARN ]: Spent 137.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2018-06-22 15:57:38,981 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2018-06-22 15:57:39,136 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2018-06-22 15:57:39,305 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2018-06-22 15:57:39,343 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:57:39,343 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-22 15:57:39,345 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 15:57:39,345 INFO ]: Start accepts. Automaton has 27 states. Word has length 33 [2018-06-22 15:57:39,345 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:57:39,346 INFO ]: With dead ends: 27 [2018-06-22 15:57:39,346 INFO ]: Without dead ends: 27 [2018-06-22 15:57:39,346 INFO ]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2018-06-22 15:57:39,346 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 15:57:39,350 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 15:57:39,350 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 15:57:39,351 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-22 15:57:39,351 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 33 [2018-06-22 15:57:39,351 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:57:39,351 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-22 15:57:39,351 INFO ]: Interpolant automaton has 27 states. [2018-06-22 15:57:39,351 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-22 15:57:39,352 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 15:57:39,352 INFO ]: Found error trace [2018-06-22 15:57:39,352 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:57:39,352 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:57:39,352 INFO ]: Analyzing trace with hash 1618126293, now seen corresponding path program 6 times [2018-06-22 15:57:39,352 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:57:39,352 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:57:39,353 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:39,353 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:57:39,353 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:39,560 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:40,169 WARN ]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-06-22 15:57:40,829 WARN ]: Spent 585.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 25 [2018-06-22 15:57:41,116 WARN ]: Spent 208.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 28 [2018-06-22 15:57:41,239 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2018-06-22 15:57:41,366 WARN ]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2018-06-22 15:57:41,568 WARN ]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2018-06-22 15:57:41,798 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 29 [2018-06-22 15:57:41,956 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 27 [2018-06-22 15:57:42,426 WARN ]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 11 [2018-06-22 15:57:42,454 INFO ]: Checked inductivity of 136 backedges. 3 proven. 96 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-06-22 15:57:42,454 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:57:42,454 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 15:57:42,469 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 15:57:42,707 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-06-22 15:57:42,707 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:42,724 INFO ]: Computing forward predicates... [2018-06-22 15:57:43,901 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 15:57:43,921 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:57:43,921 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 35 [2018-06-22 15:57:43,921 INFO ]: Interpolant automaton has 35 states [2018-06-22 15:57:43,922 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-22 15:57:43,922 INFO ]: CoverageRelationStatistics Valid=92, Invalid=1098, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 15:57:43,922 INFO ]: Start difference. First operand 27 states and 28 transitions. Second operand 35 states. [2018-06-22 15:57:44,288 WARN ]: Spent 237.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 94 [2018-06-22 15:57:44,724 WARN ]: Spent 372.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 98 [2018-06-22 15:57:45,095 WARN ]: Spent 322.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 105 [2018-06-22 15:57:45,441 WARN ]: Spent 288.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 105 [2018-06-22 15:57:45,771 WARN ]: Spent 285.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 106 [2018-06-22 15:57:46,139 WARN ]: Spent 307.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 103 [2018-06-22 15:57:46,463 WARN ]: Spent 268.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 103 [2018-06-22 15:57:46,805 WARN ]: Spent 281.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 100 [2018-06-22 15:57:47,101 WARN ]: Spent 231.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 93 [2018-06-22 15:57:47,498 WARN ]: Spent 216.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 87 [2018-06-22 15:57:47,583 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:57:47,583 INFO ]: Finished difference Result 31 states and 32 transitions. [2018-06-22 15:57:47,584 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 15:57:47,584 INFO ]: Start accepts. Automaton has 35 states. Word has length 41 [2018-06-22 15:57:47,584 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:57:47,585 INFO ]: With dead ends: 31 [2018-06-22 15:57:47,585 INFO ]: Without dead ends: 31 [2018-06-22 15:57:47,585 INFO ]: 0 DeclaredPredicates, 71 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=389, Invalid=1681, Unknown=0, NotChecked=0, Total=2070 [2018-06-22 15:57:47,585 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 15:57:47,590 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-06-22 15:57:47,590 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 15:57:47,590 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-06-22 15:57:47,590 INFO ]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 41 [2018-06-22 15:57:47,590 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:57:47,590 INFO ]: Abstraction has 31 states and 32 transitions. [2018-06-22 15:57:47,590 INFO ]: Interpolant automaton has 35 states. [2018-06-22 15:57:47,590 INFO ]: Start isEmpty. Operand 31 states and 32 transitions. [2018-06-22 15:57:47,591 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 15:57:47,591 INFO ]: Found error trace [2018-06-22 15:57:47,591 INFO ]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:57:47,591 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:57:47,591 INFO ]: Analyzing trace with hash -570306151, now seen corresponding path program 7 times [2018-06-22 15:57:47,591 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:57:47,591 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:57:47,593 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:47,593 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:57:47,593 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:57:47,832 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:49,238 WARN ]: Spent 415.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 11 [2018-06-22 15:57:49,972 WARN ]: Spent 654.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2018-06-22 15:57:51,583 WARN ]: Spent 1.41 s on a formula simplification. DAG size of input: 144 DAG size of output: 28 [2018-06-22 15:57:52,274 WARN ]: Spent 623.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 43 [2018-06-22 15:57:52,773 WARN ]: Spent 461.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 44 [2018-06-22 15:57:53,029 WARN ]: Spent 211.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 40 [2018-06-22 15:57:53,786 WARN ]: Spent 692.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 51 [2018-06-22 15:57:54,364 WARN ]: Spent 525.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 48 [2018-06-22 15:57:54,667 WARN ]: Spent 263.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 50 [2018-06-22 15:57:54,897 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 31 [2018-06-22 15:57:55,581 WARN ]: Spent 601.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 44 [2018-06-22 15:57:56,526 WARN ]: Spent 819.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 46 [2018-06-22 15:57:57,399 WARN ]: Spent 747.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 32 [2018-06-22 15:57:58,337 WARN ]: Spent 807.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 31 [2018-06-22 15:57:59,181 WARN ]: Spent 696.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 27 [2018-06-22 15:57:59,353 INFO ]: Checked inductivity of 210 backedges. 3 proven. 152 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-06-22 15:57:59,353 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:57:59,353 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 15:57:59,359 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:57:59,603 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:57:59,617 INFO ]: Computing forward predicates... [2018-06-22 15:58:01,972 INFO ]: Checked inductivity of 210 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-06-22 15:58:01,992 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:58:01,992 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18] total 38 [2018-06-22 15:58:01,993 INFO ]: Interpolant automaton has 38 states [2018-06-22 15:58:01,993 INFO ]: Constructing interpolant automaton starting with 38 interpolants. [2018-06-22 15:58:01,993 INFO ]: CoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2018-06-22 15:58:01,993 INFO ]: Start difference. First operand 31 states and 32 transitions. Second operand 38 states. [2018-06-22 15:58:02,311 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 70 [2018-06-22 15:58:02,635 WARN ]: Spent 280.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2018-06-22 15:58:03,005 WARN ]: Spent 339.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2018-06-22 15:58:03,314 WARN ]: Spent 252.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 80 [2018-06-22 15:58:03,659 WARN ]: Spent 296.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 76 [2018-06-22 15:58:03,918 WARN ]: Spent 214.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 77 [2018-06-22 15:58:04,194 WARN ]: Spent 219.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2018-06-22 15:58:04,462 WARN ]: Spent 201.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2018-06-22 15:58:04,724 WARN ]: Spent 203.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2018-06-22 15:58:04,978 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2018-06-22 15:58:05,210 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 64 [2018-06-22 15:58:05,259 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:58:05,259 INFO ]: Finished difference Result 33 states and 34 transitions. [2018-06-22 15:58:05,260 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 15:58:05,260 INFO ]: Start accepts. Automaton has 38 states. Word has length 49 [2018-06-22 15:58:05,260 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:58:05,260 INFO ]: With dead ends: 33 [2018-06-22 15:58:05,260 INFO ]: Without dead ends: 33 [2018-06-22 15:58:05,261 INFO ]: 0 DeclaredPredicates, 84 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=504, Invalid=1946, Unknown=0, NotChecked=0, Total=2450 [2018-06-22 15:58:05,261 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-22 15:58:05,265 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-06-22 15:58:05,265 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-22 15:58:05,266 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-06-22 15:58:05,266 INFO ]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 49 [2018-06-22 15:58:05,266 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:58:05,266 INFO ]: Abstraction has 33 states and 34 transitions. [2018-06-22 15:58:05,266 INFO ]: Interpolant automaton has 38 states. [2018-06-22 15:58:05,266 INFO ]: Start isEmpty. Operand 33 states and 34 transitions. [2018-06-22 15:58:05,268 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-22 15:58:05,268 INFO ]: Found error trace [2018-06-22 15:58:05,268 INFO ]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:58:05,268 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:58:05,268 INFO ]: Analyzing trace with hash 1955719355, now seen corresponding path program 8 times [2018-06-22 15:58:05,268 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:58:05,268 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:58:05,268 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:05,269 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:58:05,269 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:58:05,551 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:06,794 WARN ]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-06-22 15:58:07,762 WARN ]: Spent 890.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 31 [2018-06-22 15:58:07,987 WARN ]: Spent 181.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 43 [2018-06-22 15:58:08,394 WARN ]: Spent 374.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 45 [2018-06-22 15:58:08,780 WARN ]: Spent 351.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 51 [2018-06-22 15:58:09,288 WARN ]: Spent 460.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 51 [2018-06-22 15:58:09,731 WARN ]: Spent 395.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 53 [2018-06-22 15:58:09,872 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2018-06-22 15:58:09,994 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2018-06-22 15:58:10,198 WARN ]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2018-06-22 15:58:10,365 WARN ]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2018-06-22 15:58:10,659 WARN ]: Spent 254.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 48 [2018-06-22 15:58:10,837 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 43 [2018-06-22 15:58:11,357 WARN ]: Spent 413.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 32 [2018-06-22 15:58:12,317 WARN ]: Spent 825.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 40 [2018-06-22 15:58:13,071 WARN ]: Spent 603.00 ms on a formula simplification. DAG size of input: 436 DAG size of output: 27 [2018-06-22 15:58:13,877 WARN ]: Spent 616.00 ms on a formula simplification. DAG size of input: 428 DAG size of output: 26 [2018-06-22 15:58:14,660 WARN ]: Spent 645.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 27 [2018-06-22 15:58:15,171 WARN ]: Spent 418.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 11 [2018-06-22 15:58:15,278 INFO ]: Checked inductivity of 253 backedges. 11 proven. 176 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-06-22 15:58:15,278 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:58:15,278 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 15:58:15,284 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:58:15,461 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:58:15,461 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:58:15,475 INFO ]: Computing forward predicates... [2018-06-22 15:58:16,875 WARN ]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2018-06-22 15:58:18,227 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2018-06-22 15:58:18,943 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:58:18,957 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:58:19,459 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:58:19,461 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:58:20,011 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:58:20,027 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 15:58:20,099 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:58:20,110 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:58:20,118 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:58:20,158 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:58:20,173 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:58:20,178 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:58:20,230 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:58:20,251 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:58:20,270 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 15:58:20,285 WARN ]: expecting exponential blowup for input size 7 Received shutdown request... [2018-06-22 15:58:22,196 WARN ]: Removed 2 from assertion stack [2018-06-22 15:58:22,196 INFO ]: Timeout while computing interpolants [2018-06-22 15:58:22,396 WARN ]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:58:22,396 WARN ]: Verification canceled [2018-06-22 15:58:22,401 WARN ]: Timeout [2018-06-22 15:58:22,401 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:58:22 BoogieIcfgContainer [2018-06-22 15:58:22,401 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:58:22,402 INFO ]: Toolchain (without parser) took 58229.54 ms. Allocated memory was 306.2 MB in the beginning and 1.1 GB in the end (delta: 758.1 MB). Free memory was 254.6 MB in the beginning and 412.6 MB in the end (delta: -158.0 MB). Peak memory consumption was 600.1 MB. Max. memory is 3.6 GB. [2018-06-22 15:58:22,402 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:58:22,403 INFO ]: ChcToBoogie took 71.52 ms. Allocated memory is still 306.2 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:58:22,403 INFO ]: Boogie Preprocessor took 58.54 ms. Allocated memory is still 306.2 MB. Free memory was 252.6 MB in the beginning and 250.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:58:22,403 INFO ]: RCFGBuilder took 433.13 ms. Allocated memory is still 306.2 MB. Free memory was 250.6 MB in the beginning and 235.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 3.6 GB. [2018-06-22 15:58:22,404 INFO ]: TraceAbstraction took 57657.72 ms. Allocated memory was 306.2 MB in the beginning and 1.1 GB in the end (delta: 758.1 MB). Free memory was 234.4 MB in the beginning and 412.6 MB in the end (delta: -178.1 MB). Peak memory consumption was 580.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:58:22,406 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 71.52 ms. Allocated memory is still 306.2 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 58.54 ms. Allocated memory is still 306.2 MB. Free memory was 252.6 MB in the beginning and 250.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 433.13 ms. Allocated memory is still 306.2 MB. Free memory was 250.6 MB in the beginning and 235.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57657.72 ms. Allocated memory was 306.2 MB in the beginning and 1.1 GB in the end (delta: 758.1 MB). Free memory was 234.4 MB in the beginning and 412.6 MB in the end (delta: -178.1 MB). Peak memory consumption was 580.0 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 TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 19. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 57.5s OverallTime, 9 OverallIterations, 12 TraceHistogramMax, 11.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 87 SDtfs, 443 SDslu, 778 SDs, 0 SdLazy, 604 SolverSat, 519 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 349 GetRequests, 144 SyntacticMatches, 7 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 30.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=8, 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 26.4s InterpolantComputationTime, 415 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 400 ConstructedInterpolants, 0 QuantifiedInterpolants, 168508 SizeOfPredicates, 443 NumberOfNonLiveVariables, 5187 ConjunctsInSsa, 448 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 304/1026 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_e7_244.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-58-22-416.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_5_e7_244.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-58-22-416.csv Completed graceful shutdown