java -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/nested9.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 13:30:20,450 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 13:30:20,452 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 13:30:20,466 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 13:30:20,467 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 13:30:20,467 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 13:30:20,471 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 13:30:20,474 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 13:30:20,475 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 13:30:20,478 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 13:30:20,478 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 13:30:20,479 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 13:30:20,479 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 13:30:20,481 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 13:30:20,484 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 13:30:20,485 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 13:30:20,487 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 13:30:20,500 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 13:30:20,502 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 13:30:20,502 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 13:30:20,504 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 13:30:20,506 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 13:30:20,506 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 13:30:20,506 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 13:30:20,507 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 13:30:20,513 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 13:30:20,514 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 13:30:20,514 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 13:30:20,515 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 13:30:20,515 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 13:30:20,516 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 13:30:20,521 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 13:30:20,522 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 13:30:20,522 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 13:30:20,523 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 13:30:20,523 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 13:30:20,546 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 13:30:20,546 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 13:30:20,546 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 13:30:20,547 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 13:30:20,548 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 13:30:20,548 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 13:30:20,548 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 13:30:20,549 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 13:30:20,551 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 13:30:20,552 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 13:30:20,552 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 13:30:20,552 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 13:30:20,552 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 13:30:20,552 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 13:30:20,552 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 13:30:20,553 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 13:30:20,553 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 13:30:20,554 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 13:30:20,554 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 13:30:20,600 INFO ]: Repository-Root is: /tmp [2018-06-18 13:30:20,615 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 13:30:20,621 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 13:30:20,622 INFO ]: Initializing SmtParser... [2018-06-18 13:30:20,622 INFO ]: SmtParser initialized [2018-06-18 13:30:20,623 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/nested9.c.smt2 [2018-06-18 13:30:20,624 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-18 13:30:20,711 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/nested9.c.smt2 unknown [2018-06-18 13:30:20,980 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/nested9.c.smt2 [2018-06-18 13:30:20,987 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 13:30:20,993 INFO ]: Walking toolchain with 4 elements. [2018-06-18 13:30:20,993 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 13:30:20,993 INFO ]: Initializing ChcToBoogie... [2018-06-18 13:30:20,993 INFO ]: ChcToBoogie initialized [2018-06-18 13:30:21,004 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:30:20" (1/1) ... [2018-06-18 13:30:21,080 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:30:21 Unit [2018-06-18 13:30:21,080 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 13:30:21,081 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 13:30:21,081 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 13:30:21,081 INFO ]: Boogie Preprocessor initialized [2018-06-18 13:30:21,108 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:30:21" (1/1) ... [2018-06-18 13:30:21,108 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:30:21" (1/1) ... [2018-06-18 13:30:21,128 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:30:21" (1/1) ... [2018-06-18 13:30:21,129 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:30:21" (1/1) ... [2018-06-18 13:30:21,134 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:30:21" (1/1) ... [2018-06-18 13:30:21,135 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:30:21" (1/1) ... [2018-06-18 13:30:21,146 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:30:21" (1/1) ... [2018-06-18 13:30:21,148 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 13:30:21,149 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 13:30:21,149 INFO ]: Initializing RCFGBuilder... [2018-06-18 13:30:21,149 INFO ]: RCFGBuilder initialized [2018-06-18 13:30:21,151 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:30:21" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 13:30:21,171 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 13:30:21,171 INFO ]: Found specification of procedure False [2018-06-18 13:30:21,171 INFO ]: Found implementation of procedure False [2018-06-18 13:30:21,171 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 13:30:21,171 INFO ]: Found specification of procedure state [2018-06-18 13:30:21,171 INFO ]: Found implementation of procedure state [2018-06-18 13:30:21,171 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 13:30:21,171 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 13:30:21,171 INFO ]: Found implementation of procedure Ultimate.START [2018-06-18 13:30:21,397 INFO ]: Using library mode [2018-06-18 13:30:21,397 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:30:21 BoogieIcfgContainer [2018-06-18 13:30:21,398 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 13:30:21,399 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 13:30:21,399 INFO ]: Initializing TraceAbstraction... [2018-06-18 13:30:21,407 INFO ]: TraceAbstraction initialized [2018-06-18 13:30:21,407 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:30:20" (1/3) ... [2018-06-18 13:30:21,408 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341ee373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 01:30:21, skipping insertion in model container [2018-06-18 13:30:21,408 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:30:21" (2/3) ... [2018-06-18 13:30:21,408 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341ee373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 01:30:21, skipping insertion in model container [2018-06-18 13:30:21,408 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:30:21" (3/3) ... [2018-06-18 13:30:21,410 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 13:30:21,429 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 13:30:21,447 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 13:30:21,498 INFO ]: Using default assertion order modulation [2018-06-18 13:30:21,499 INFO ]: Interprodecural is true [2018-06-18 13:30:21,499 INFO ]: Hoare is false [2018-06-18 13:30:21,499 INFO ]: Compute interpolants for FPandBP [2018-06-18 13:30:21,499 INFO ]: Backedges is TWOTRACK [2018-06-18 13:30:21,499 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 13:30:21,499 INFO ]: Difference is false [2018-06-18 13:30:21,499 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 13:30:21,499 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 13:30:21,519 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 13:30:21,536 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 13:30:21,536 INFO ]: Found error trace [2018-06-18 13:30:21,537 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:30:21,537 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:30:21,542 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 13:30:21,543 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:30:21,544 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:30:21,582 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:21,582 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:30:21,582 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:21,621 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:21,630 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:30:21,737 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 13:30:21,739 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 13:30:21,740 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 13:30:21,741 INFO ]: Interpolant automaton has 4 states [2018-06-18 13:30:21,752 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 13:30:21,753 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 13:30:21,754 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 13:30:21,837 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:30:21,837 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 13:30:21,838 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 13:30:21,839 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 13:30:21,839 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:30:21,852 INFO ]: With dead ends: 13 [2018-06-18 13:30:21,852 INFO ]: Without dead ends: 13 [2018-06-18 13:30:21,855 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 [2018-06-18 13:30:21,873 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 13:30:21,895 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 13:30:21,896 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 13:30:21,898 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 13:30:21,899 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 13:30:21,899 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:30:21,899 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 13:30:21,899 INFO ]: Interpolant automaton has 4 states. [2018-06-18 13:30:21,900 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 13:30:21,901 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 13:30:21,901 INFO ]: Found error trace [2018-06-18 13:30:21,901 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:30:21,901 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:30:21,901 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 13:30:21,901 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:30:21,901 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:30:21,903 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:21,903 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:30:21,903 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:21,964 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:21,965 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:30:22,151 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:30:22,151 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:30:22,151 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-18 13:30:22,167 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:30:22,212 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:22,220 INFO ]: Computing forward predicates... [2018-06-18 13:30:22,818 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:30:22,840 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:30:22,840 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-18 13:30:22,841 INFO ]: Interpolant automaton has 9 states [2018-06-18 13:30:22,841 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-18 13:30:22,841 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-18 13:30:22,841 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-18 13:30:23,254 WARN ]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-18 13:30:23,322 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:30:23,322 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 13:30:23,323 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 13:30:23,323 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-18 13:30:23,323 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:30:23,324 INFO ]: With dead ends: 15 [2018-06-18 13:30:23,324 INFO ]: Without dead ends: 15 [2018-06-18 13:30:23,325 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-18 13:30:23,325 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 13:30:23,326 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 13:30:23,326 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 13:30:23,327 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 13:30:23,327 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 13:30:23,327 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:30:23,327 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 13:30:23,327 INFO ]: Interpolant automaton has 9 states. [2018-06-18 13:30:23,327 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 13:30:23,328 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 13:30:23,328 INFO ]: Found error trace [2018-06-18 13:30:23,328 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:30:23,328 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:30:23,328 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 13:30:23,328 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:30:23,328 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:30:23,329 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:23,329 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:30:23,329 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:23,378 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:23,379 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:30:23,739 WARN ]: Spent 226.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-06-18 13:30:24,072 WARN ]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-18 13:30:24,266 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:30:24,266 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:30:24,266 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:30:24,277 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 13:30:24,323 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 13:30:24,324 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:24,327 INFO ]: Computing forward predicates... [2018-06-18 13:30:25,146 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:30:25,166 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:30:25,166 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-18 13:30:25,167 INFO ]: Interpolant automaton has 11 states [2018-06-18 13:30:25,167 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-18 13:30:25,167 INFO ]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-06-18 13:30:25,167 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-18 13:30:25,444 WARN ]: Spent 204.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2018-06-18 13:30:25,637 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-06-18 13:30:25,664 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:30:25,664 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 13:30:25,664 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 13:30:25,664 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-18 13:30:25,664 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:30:25,665 INFO ]: With dead ends: 17 [2018-06-18 13:30:25,665 INFO ]: Without dead ends: 17 [2018-06-18 13:30:25,665 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-06-18 13:30:25,665 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 13:30:25,668 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 13:30:25,668 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 13:30:25,669 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 13:30:25,669 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 13:30:25,669 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:30:25,669 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 13:30:25,669 INFO ]: Interpolant automaton has 11 states. [2018-06-18 13:30:25,669 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 13:30:25,670 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 13:30:25,670 INFO ]: Found error trace [2018-06-18 13:30:25,670 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:30:25,670 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:30:25,670 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-18 13:30:25,670 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:30:25,670 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:30:25,671 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:25,671 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:30:25,671 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:25,713 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:25,714 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:30:25,989 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 13:30:25,989 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:30:25,989 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) [2018-06-18 13:30:26,006 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:30:26,052 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 13:30:26,052 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:26,056 INFO ]: Computing forward predicates... [2018-06-18 13:30:27,299 WARN ]: Spent 811.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 28 [2018-06-18 13:30:27,631 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 13:30:27,655 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:30:27,655 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2018-06-18 13:30:27,656 INFO ]: Interpolant automaton has 14 states [2018-06-18 13:30:27,656 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-18 13:30:27,656 INFO ]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-06-18 13:30:27,656 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2018-06-18 13:30:27,872 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-06-18 13:30:28,015 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-06-18 13:30:28,198 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2018-06-18 13:30:28,364 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-06-18 13:30:28,386 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:30:28,386 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-18 13:30:28,388 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-18 13:30:28,388 INFO ]: Start accepts. Automaton has 14 states. Word has length 21 [2018-06-18 13:30:28,388 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:30:28,389 INFO ]: With dead ends: 19 [2018-06-18 13:30:28,389 INFO ]: Without dead ends: 19 [2018-06-18 13:30:28,389 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2018-06-18 13:30:28,389 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-18 13:30:28,394 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-18 13:30:28,394 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-18 13:30:28,395 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-18 13:30:28,395 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-18 13:30:28,395 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:30:28,395 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-18 13:30:28,395 INFO ]: Interpolant automaton has 14 states. [2018-06-18 13:30:28,395 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-18 13:30:28,396 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-18 13:30:28,396 INFO ]: Found error trace [2018-06-18 13:30:28,396 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:30:28,396 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:30:28,396 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-18 13:30:28,396 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:30:28,396 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:30:28,397 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:28,397 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:30:28,397 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:28,476 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:28,479 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:30:28,903 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 13:30:28,903 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:30:28,903 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:30:28,909 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-18 13:30:28,946 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 13:30:28,946 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:28,950 INFO ]: Computing forward predicates... [2018-06-18 13:30:29,150 WARN ]: Spent 166.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2018-06-18 13:30:31,401 WARN ]: Spent 180.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 2 [2018-06-18 13:30:31,429 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 13:30:31,461 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:30:31,461 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2018-06-18 13:30:31,461 INFO ]: Interpolant automaton has 15 states [2018-06-18 13:30:31,461 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-18 13:30:31,461 INFO ]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2018-06-18 13:30:31,462 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 15 states. [2018-06-18 13:30:32,239 WARN ]: Spent 318.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-06-18 13:30:32,380 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2018-06-18 13:30:32,639 WARN ]: Spent 242.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2018-06-18 13:30:32,833 WARN ]: Spent 177.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2018-06-18 13:30:33,037 WARN ]: Spent 184.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-06-18 13:30:33,066 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:30:33,066 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-18 13:30:33,068 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-18 13:30:33,069 INFO ]: Start accepts. Automaton has 15 states. Word has length 25 [2018-06-18 13:30:33,069 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:30:33,069 INFO ]: With dead ends: 21 [2018-06-18 13:30:33,069 INFO ]: Without dead ends: 21 [2018-06-18 13:30:33,070 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2018-06-18 13:30:33,070 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-18 13:30:33,074 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-18 13:30:33,074 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-18 13:30:33,076 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-18 13:30:33,076 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-18 13:30:33,076 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:30:33,076 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-18 13:30:33,076 INFO ]: Interpolant automaton has 15 states. [2018-06-18 13:30:33,076 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-18 13:30:33,077 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-18 13:30:33,077 INFO ]: Found error trace [2018-06-18 13:30:33,077 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:30:33,077 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:30:33,077 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-18 13:30:33,077 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:30:33,077 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:30:33,078 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:33,078 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:30:33,078 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:33,156 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:33,157 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:30:33,856 WARN ]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-18 13:30:34,187 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-18 13:30:34,187 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:30:34,187 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:30:34,194 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-18 13:30:34,276 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-18 13:30:34,276 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:34,281 INFO ]: Computing forward predicates... [2018-06-18 13:30:35,644 WARN ]: Spent 890.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2018-06-18 13:30:35,914 WARN ]: Spent 231.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2018-06-18 13:30:36,815 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-18 13:30:36,836 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:30:36,836 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2018-06-18 13:30:36,836 INFO ]: Interpolant automaton has 20 states [2018-06-18 13:30:36,837 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-18 13:30:36,837 INFO ]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2018-06-18 13:30:36,837 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 20 states. [2018-06-18 13:30:37,439 WARN ]: Spent 468.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-06-18 13:30:38,031 WARN ]: Spent 381.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2018-06-18 13:30:38,356 WARN ]: Spent 303.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 29 [2018-06-18 13:30:38,837 WARN ]: Spent 407.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 30 [2018-06-18 13:30:39,207 WARN ]: Spent 346.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2018-06-18 13:30:39,597 WARN ]: Spent 363.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2018-06-18 13:30:39,626 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:30:39,626 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-18 13:30:39,632 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-18 13:30:39,632 INFO ]: Start accepts. Automaton has 20 states. Word has length 29 [2018-06-18 13:30:39,632 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:30:39,633 INFO ]: With dead ends: 23 [2018-06-18 13:30:39,633 INFO ]: Without dead ends: 23 [2018-06-18 13:30:39,634 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2018-06-18 13:30:39,634 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-18 13:30:39,639 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-18 13:30:39,639 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-18 13:30:39,640 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-18 13:30:39,640 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-18 13:30:39,640 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:30:39,640 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-18 13:30:39,640 INFO ]: Interpolant automaton has 20 states. [2018-06-18 13:30:39,640 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-18 13:30:39,645 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-18 13:30:39,645 INFO ]: Found error trace [2018-06-18 13:30:39,645 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:30:39,645 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:30:39,646 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 6 times [2018-06-18 13:30:39,646 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:30:39,646 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:30:39,646 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:39,646 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:30:39,646 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:39,731 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:39,732 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:30:40,688 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-18 13:30:40,688 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:30:40,688 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 [2018-06-18 13:30:40,694 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-18 13:30:40,768 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-18 13:30:40,768 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:40,774 INFO ]: Computing forward predicates... [2018-06-18 13:30:41,105 WARN ]: Spent 150.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2018-06-18 13:30:41,758 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-18 13:30:41,790 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:30:41,790 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 21 [2018-06-18 13:30:41,790 INFO ]: Interpolant automaton has 21 states [2018-06-18 13:30:41,790 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-18 13:30:41,791 INFO ]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2018-06-18 13:30:41,791 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 21 states. [2018-06-18 13:30:42,204 WARN ]: Spent 377.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-06-18 13:30:42,356 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 24 [2018-06-18 13:30:42,594 WARN ]: Spent 216.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 28 [2018-06-18 13:30:42,886 WARN ]: Spent 268.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2018-06-18 13:30:43,100 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 32 [2018-06-18 13:30:43,351 WARN ]: Spent 229.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2018-06-18 13:30:43,650 WARN ]: Spent 268.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2018-06-18 13:30:43,677 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:30:43,677 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-18 13:30:43,678 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-18 13:30:43,678 INFO ]: Start accepts. Automaton has 21 states. Word has length 33 [2018-06-18 13:30:43,678 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:30:43,679 INFO ]: With dead ends: 25 [2018-06-18 13:30:43,679 INFO ]: Without dead ends: 25 [2018-06-18 13:30:43,679 INFO ]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2018-06-18 13:30:43,679 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-18 13:30:43,683 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-18 13:30:43,683 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-18 13:30:43,683 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-18 13:30:43,684 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 33 [2018-06-18 13:30:43,684 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:30:43,684 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-18 13:30:43,684 INFO ]: Interpolant automaton has 21 states. [2018-06-18 13:30:43,684 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-18 13:30:43,685 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-18 13:30:43,685 INFO ]: Found error trace [2018-06-18 13:30:43,685 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:30:43,685 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:30:43,685 INFO ]: Analyzing trace with hash -1494134477, now seen corresponding path program 7 times [2018-06-18 13:30:43,685 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:30:43,685 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:30:43,686 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:43,686 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:30:43,686 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:43,762 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:43,763 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:30:44,175 WARN ]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-18 13:30:44,660 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-18 13:30:44,660 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:30:44,660 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 [2018-06-18 13:30:44,666 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:30:44,723 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:44,729 INFO ]: Computing forward predicates... [2018-06-18 13:30:44,998 WARN ]: Spent 209.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 25 [2018-06-18 13:30:45,167 WARN ]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2018-06-18 13:30:45,383 WARN ]: Spent 151.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2018-06-18 13:30:45,948 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-18 13:30:45,968 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:30:45,968 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24 [2018-06-18 13:30:45,969 INFO ]: Interpolant automaton has 24 states [2018-06-18 13:30:45,969 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-18 13:30:45,969 INFO ]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2018-06-18 13:30:45,969 INFO ]: Start difference. First operand 25 states and 26 transitions. Second operand 24 states. [2018-06-18 13:30:46,528 WARN ]: Spent 479.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2018-06-18 13:30:46,743 WARN ]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 29 [2018-06-18 13:30:47,002 WARN ]: Spent 226.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2018-06-18 13:30:47,309 WARN ]: Spent 267.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 38 [2018-06-18 13:30:47,608 WARN ]: Spent 271.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 44 [2018-06-18 13:30:47,875 WARN ]: Spent 239.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 36 [2018-06-18 13:30:48,181 WARN ]: Spent 277.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2018-06-18 13:30:48,662 WARN ]: Spent 446.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2018-06-18 13:30:48,692 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:30:48,692 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-18 13:30:48,694 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-18 13:30:48,694 INFO ]: Start accepts. Automaton has 24 states. Word has length 37 [2018-06-18 13:30:48,694 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:30:48,695 INFO ]: With dead ends: 27 [2018-06-18 13:30:48,695 INFO ]: Without dead ends: 27 [2018-06-18 13:30:48,695 INFO ]: 0 DeclaredPredicates, 63 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=204, Invalid=852, Unknown=0, NotChecked=0, Total=1056 [2018-06-18 13:30:48,695 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-18 13:30:48,699 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-18 13:30:48,699 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-18 13:30:48,699 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-18 13:30:48,699 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 37 [2018-06-18 13:30:48,700 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:30:48,700 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-18 13:30:48,700 INFO ]: Interpolant automaton has 24 states. [2018-06-18 13:30:48,700 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-18 13:30:48,701 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-18 13:30:48,701 INFO ]: Found error trace [2018-06-18 13:30:48,701 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:30:48,701 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:30:48,701 INFO ]: Analyzing trace with hash 1618126293, now seen corresponding path program 8 times [2018-06-18 13:30:48,701 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:30:48,701 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:30:48,702 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:48,702 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:30:48,702 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:48,844 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:48,848 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:30:49,813 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-18 13:30:49,813 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:30:49,813 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 [2018-06-18 13:30:49,819 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 13:30:49,879 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 13:30:49,879 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:49,886 INFO ]: Computing forward predicates... [2018-06-18 13:30:50,165 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 22 [2018-06-18 13:30:50,483 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2018-06-18 13:30:50,771 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-06-18 13:30:50,940 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2018-06-18 13:30:51,102 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2018-06-18 13:30:53,559 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-18 13:30:53,579 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:30:53,580 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 35 [2018-06-18 13:30:53,581 INFO ]: Interpolant automaton has 35 states [2018-06-18 13:30:53,581 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-18 13:30:53,581 INFO ]: CoverageRelationStatistics Valid=112, Invalid=1078, Unknown=0, NotChecked=0, Total=1190 [2018-06-18 13:30:53,582 INFO ]: Start difference. First operand 27 states and 28 transitions. Second operand 35 states. [2018-06-18 13:30:54,352 WARN ]: Spent 683.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 89 [2018-06-18 13:30:54,617 WARN ]: Spent 214.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 27 [2018-06-18 13:30:55,102 WARN ]: Spent 446.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 47 [2018-06-18 13:30:55,619 WARN ]: Spent 477.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 52 [2018-06-18 13:30:56,229 WARN ]: Spent 568.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 58 [2018-06-18 13:30:56,839 WARN ]: Spent 519.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 47 [2018-06-18 13:30:57,425 WARN ]: Spent 546.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 57 [2018-06-18 13:30:57,888 WARN ]: Spent 421.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 46 [2018-06-18 13:30:58,533 WARN ]: Spent 588.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 62 [2018-06-18 13:30:58,580 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:30:58,580 INFO ]: Finished difference Result 29 states and 30 transitions. [2018-06-18 13:30:58,580 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-18 13:30:58,580 INFO ]: Start accepts. Automaton has 35 states. Word has length 41 [2018-06-18 13:30:58,580 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:30:58,581 INFO ]: With dead ends: 29 [2018-06-18 13:30:58,581 INFO ]: Without dead ends: 29 [2018-06-18 13:30:58,582 INFO ]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=306, Invalid=1674, Unknown=0, NotChecked=0, Total=1980 [2018-06-18 13:30:58,582 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-18 13:30:58,586 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-18 13:30:58,586 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-18 13:30:58,589 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-06-18 13:30:58,590 INFO ]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 41 [2018-06-18 13:30:58,590 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:30:58,590 INFO ]: Abstraction has 29 states and 30 transitions. [2018-06-18 13:30:58,590 INFO ]: Interpolant automaton has 35 states. [2018-06-18 13:30:58,590 INFO ]: Start isEmpty. Operand 29 states and 30 transitions. [2018-06-18 13:30:58,591 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-18 13:30:58,591 INFO ]: Found error trace [2018-06-18 13:30:58,591 INFO ]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:30:58,591 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:30:58,591 INFO ]: Analyzing trace with hash 996918775, now seen corresponding path program 9 times [2018-06-18 13:30:58,591 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:30:58,591 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:30:58,592 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:58,592 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:30:58,592 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:30:58,709 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:30:58,710 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:30:59,942 INFO ]: Checked inductivity of 171 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-18 13:30:59,942 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:30:59,942 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:30:59,947 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-18 13:31:00,028 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-06-18 13:31:00,028 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:31:00,035 INFO ]: Computing forward predicates... [2018-06-18 13:31:00,275 WARN ]: Spent 169.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2018-06-18 13:31:01,694 WARN ]: Spent 684.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2018-06-18 13:31:01,955 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2018-06-18 13:31:02,102 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2018-06-18 13:31:03,347 INFO ]: Checked inductivity of 171 backedges. 2 proven. 124 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-18 13:31:03,367 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:31:03,367 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 40 [2018-06-18 13:31:03,367 INFO ]: Interpolant automaton has 40 states [2018-06-18 13:31:03,367 INFO ]: Constructing interpolant automaton starting with 40 interpolants. [2018-06-18 13:31:03,368 INFO ]: CoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2018-06-18 13:31:03,368 INFO ]: Start difference. First operand 29 states and 30 transitions. Second operand 40 states. [2018-06-18 13:31:04,314 WARN ]: Spent 843.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 108 [2018-06-18 13:31:04,704 WARN ]: Spent 254.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 38 [2018-06-18 13:31:05,180 WARN ]: Spent 428.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 53 [2018-06-18 13:31:05,748 WARN ]: Spent 514.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 58 [2018-06-18 13:31:06,135 WARN ]: Spent 315.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 68 [2018-06-18 13:31:06,553 WARN ]: Spent 369.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 44 [2018-06-18 13:31:07,066 WARN ]: Spent 463.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 52 [2018-06-18 13:31:07,546 WARN ]: Spent 430.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 51 [2018-06-18 13:31:08,049 WARN ]: Spent 452.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 56 [2018-06-18 13:31:08,694 WARN ]: Spent 591.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 78 [2018-06-18 13:31:08,746 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:31:08,746 INFO ]: Finished difference Result 31 states and 32 transitions. [2018-06-18 13:31:08,750 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-18 13:31:08,750 INFO ]: Start accepts. Automaton has 40 states. Word has length 45 [2018-06-18 13:31:08,751 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:31:08,751 INFO ]: With dead ends: 31 [2018-06-18 13:31:08,751 INFO ]: Without dead ends: 31 [2018-06-18 13:31:08,752 INFO ]: 0 DeclaredPredicates, 77 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=392, Invalid=2158, Unknown=0, NotChecked=0, Total=2550 [2018-06-18 13:31:08,752 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-18 13:31:08,758 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-06-18 13:31:08,758 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-18 13:31:08,759 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-06-18 13:31:08,759 INFO ]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 45 [2018-06-18 13:31:08,759 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:31:08,759 INFO ]: Abstraction has 31 states and 32 transitions. [2018-06-18 13:31:08,759 INFO ]: Interpolant automaton has 40 states. [2018-06-18 13:31:08,759 INFO ]: Start isEmpty. Operand 31 states and 32 transitions. [2018-06-18 13:31:08,763 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-18 13:31:08,763 INFO ]: Found error trace [2018-06-18 13:31:08,763 INFO ]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:31:08,763 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:31:08,763 INFO ]: Analyzing trace with hash -570306151, now seen corresponding path program 10 times [2018-06-18 13:31:08,764 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:31:08,764 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:31:08,764 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:31:08,764 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:31:08,764 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:31:08,875 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:31:08,876 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:31:09,400 WARN ]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-18 13:31:10,080 INFO ]: Checked inductivity of 210 backedges. 1 proven. 154 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-06-18 13:31:10,080 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:31:10,080 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:31:10,087 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-18 13:31:10,164 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 13:31:10,164 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:31:10,172 INFO ]: Computing forward predicates... [2018-06-18 13:31:10,498 WARN ]: Spent 151.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2018-06-18 13:31:10,725 WARN ]: Spent 184.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2018-06-18 13:31:10,936 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-06-18 13:31:11,099 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2018-06-18 13:31:11,988 WARN ]: Spent 749.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 44 [2018-06-18 13:31:13,066 INFO ]: Checked inductivity of 210 backedges. 3 proven. 152 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-06-18 13:31:13,086 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:31:13,086 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 37 [2018-06-18 13:31:13,087 INFO ]: Interpolant automaton has 37 states [2018-06-18 13:31:13,087 INFO ]: Constructing interpolant automaton starting with 37 interpolants. [2018-06-18 13:31:13,087 INFO ]: CoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2018-06-18 13:31:13,087 INFO ]: Start difference. First operand 31 states and 32 transitions. Second operand 37 states. [2018-06-18 13:31:13,828 WARN ]: Spent 680.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2018-06-18 13:31:14,187 WARN ]: Spent 235.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 36 [2018-06-18 13:31:14,488 WARN ]: Spent 270.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 35 [2018-06-18 13:31:14,959 WARN ]: Spent 433.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 40 [2018-06-18 13:31:15,468 WARN ]: Spent 476.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 40 [2018-06-18 13:31:15,832 WARN ]: Spent 320.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 34 [2018-06-18 13:31:16,428 WARN ]: Spent 563.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 44 [2018-06-18 13:31:16,743 WARN ]: Spent 280.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 33 [2018-06-18 13:31:17,222 WARN ]: Spent 447.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 41 [2018-06-18 13:31:17,853 WARN ]: Spent 601.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 39 [2018-06-18 13:31:18,524 WARN ]: Spent 627.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2018-06-18 13:31:18,651 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:31:18,651 INFO ]: Finished difference Result 33 states and 34 transitions. [2018-06-18 13:31:18,651 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-18 13:31:18,651 INFO ]: Start accepts. Automaton has 37 states. Word has length 49 [2018-06-18 13:31:18,652 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:31:18,652 INFO ]: With dead ends: 33 [2018-06-18 13:31:18,652 INFO ]: Without dead ends: 33 [2018-06-18 13:31:18,653 INFO ]: 0 DeclaredPredicates, 83 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2018-06-18 13:31:18,653 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-18 13:31:18,657 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-06-18 13:31:18,657 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-18 13:31:18,657 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-06-18 13:31:18,657 INFO ]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 49 [2018-06-18 13:31:18,658 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:31:18,658 INFO ]: Abstraction has 33 states and 34 transitions. [2018-06-18 13:31:18,658 INFO ]: Interpolant automaton has 37 states. [2018-06-18 13:31:18,658 INFO ]: Start isEmpty. Operand 33 states and 34 transitions. [2018-06-18 13:31:18,658 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-18 13:31:18,658 INFO ]: Found error trace [2018-06-18 13:31:18,658 INFO ]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:31:18,659 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:31:18,659 INFO ]: Analyzing trace with hash 1955719355, now seen corresponding path program 11 times [2018-06-18 13:31:18,659 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:31:18,659 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:31:18,659 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:31:18,659 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:31:18,659 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:31:18,792 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:31:18,794 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:31:19,504 WARN ]: Spent 414.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-06-18 13:31:20,389 INFO ]: Checked inductivity of 253 backedges. 2 proven. 185 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-06-18 13:31:20,390 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:31:20,390 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:31:20,416 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-18 13:31:20,547 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-06-18 13:31:20,547 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:31:20,558 INFO ]: Computing forward predicates... [2018-06-18 13:31:20,998 WARN ]: Spent 220.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 Received shutdown request... [2018-06-18 13:31:21,215 WARN ]: Removed 6 from assertion stack [2018-06-18 13:31:21,215 INFO ]: Timeout while computing interpolants [2018-06-18 13:31:21,415 WARN ]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:31:21,415 WARN ]: Verification canceled [2018-06-18 13:31:21,419 WARN ]: Timeout [2018-06-18 13:31:21,420 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 01:31:21 BoogieIcfgContainer [2018-06-18 13:31:21,420 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 13:31:21,420 INFO ]: Toolchain (without parser) took 60433.10 ms. Allocated memory was 309.3 MB in the beginning and 806.9 MB in the end (delta: 497.5 MB). Free memory was 260.7 MB in the beginning and 528.6 MB in the end (delta: -267.8 MB). Peak memory consumption was 229.7 MB. Max. memory is 3.6 GB. [2018-06-18 13:31:21,421 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 13:31:21,421 INFO ]: ChcToBoogie took 87.28 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 257.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:31:21,421 INFO ]: Boogie Preprocessor took 67.49 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 255.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:31:21,422 INFO ]: RCFGBuilder took 248.76 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 245.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:31:21,422 INFO ]: TraceAbstraction took 60020.86 ms. Allocated memory was 309.3 MB in the beginning and 806.9 MB in the end (delta: 497.5 MB). Free memory was 245.8 MB in the beginning and 528.6 MB in the end (delta: -282.8 MB). Peak memory consumption was 214.8 MB. Max. memory is 3.6 GB. [2018-06-18 13:31:21,424 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 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 87.28 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 257.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 67.49 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 255.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 248.76 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 245.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60020.86 ms. Allocated memory was 309.3 MB in the beginning and 806.9 MB in the end (delta: 497.5 MB). Free memory was 245.8 MB in the beginning and 528.6 MB in the end (delta: -282.8 MB). Peak memory consumption was 214.8 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 42. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 59.9s OverallTime, 12 OverallIterations, 12 TraceHistogramMax, 26.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 152 SDtfs, 652 SDslu, 1187 SDs, 0 SdLazy, 1046 SolverSat, 772 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 525 GetRequests, 223 SyntacticMatches, 23 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 44.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=11, 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, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 28.2s InterpolantComputationTime, 629 NumberOfCodeBlocks, 629 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 651628 SizeOfPredicates, 973 NumberOfNonLiveVariables, 2865 ConjunctsInSsa, 541 ConjunctsInUnsatCore, 21 InterpolantComputations, 1 PerfectInterpolantSequences, 446/1650 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/nested9.c.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_13-31-21-433.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nested9.c.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_13-31-21-433.csv Completed graceful shutdown