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/sendmail-mime7to8_arr_three_chars_no_test_ok.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 13:38:09,222 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 13:38:09,224 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 13:38:09,236 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 13:38:09,237 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 13:38:09,238 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 13:38:09,241 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 13:38:09,243 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 13:38:09,245 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 13:38:09,248 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 13:38:09,249 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 13:38:09,249 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 13:38:09,250 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 13:38:09,252 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 13:38:09,252 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 13:38:09,253 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 13:38:09,255 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 13:38:09,258 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 13:38:09,260 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 13:38:09,261 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 13:38:09,263 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 13:38:09,266 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 13:38:09,266 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 13:38:09,266 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 13:38:09,267 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 13:38:09,268 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 13:38:09,269 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 13:38:09,270 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 13:38:09,272 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 13:38:09,272 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 13:38:09,273 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 13:38:09,274 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 13:38:09,274 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 13:38:09,275 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 13:38:09,276 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 13:38:09,276 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 13:38:09,294 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 13:38:09,294 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 13:38:09,294 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 13:38:09,295 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 13:38:09,296 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 13:38:09,296 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 13:38:09,296 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 13:38:09,297 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 13:38:09,297 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 13:38:09,297 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 13:38:09,297 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 13:38:09,297 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 13:38:09,297 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 13:38:09,298 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 13:38:09,298 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 13:38:09,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 13:38:09,298 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 13:38:09,300 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 13:38:09,300 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 13:38:09,339 INFO ]: Repository-Root is: /tmp [2018-06-18 13:38:09,358 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 13:38:09,366 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 13:38:09,368 INFO ]: Initializing SmtParser... [2018-06-18 13:38:09,368 INFO ]: SmtParser initialized [2018-06-18 13:38:09,369 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/sendmail-mime7to8_arr_three_chars_no_test_ok.c.smt2 [2018-06-18 13:38:09,370 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 13:38:09,474 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/sendmail-mime7to8_arr_three_chars_no_test_ok.c.smt2 unknown [2018-06-18 13:38:09,829 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/sendmail-mime7to8_arr_three_chars_no_test_ok.c.smt2 [2018-06-18 13:38:09,834 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 13:38:09,841 INFO ]: Walking toolchain with 4 elements. [2018-06-18 13:38:09,841 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 13:38:09,841 INFO ]: Initializing ChcToBoogie... [2018-06-18 13:38:09,841 INFO ]: ChcToBoogie initialized [2018-06-18 13:38:09,849 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:38:09" (1/1) ... [2018-06-18 13:38:09,945 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:38:09 Unit [2018-06-18 13:38:09,945 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 13:38:09,951 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 13:38:09,951 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 13:38:09,951 INFO ]: Boogie Preprocessor initialized [2018-06-18 13:38:09,975 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:38:09" (1/1) ... [2018-06-18 13:38:09,976 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:38:09" (1/1) ... [2018-06-18 13:38:09,986 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:38:09" (1/1) ... [2018-06-18 13:38:09,986 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:38:09" (1/1) ... [2018-06-18 13:38:09,995 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:38:09" (1/1) ... [2018-06-18 13:38:09,996 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:38:09" (1/1) ... [2018-06-18 13:38:09,999 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:38:09" (1/1) ... [2018-06-18 13:38:10,003 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 13:38:10,004 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 13:38:10,004 INFO ]: Initializing RCFGBuilder... [2018-06-18 13:38:10,004 INFO ]: RCFGBuilder initialized [2018-06-18 13:38:10,005 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:38:09" (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) [2018-06-18 13:38:10,027 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 13:38:10,027 INFO ]: Found specification of procedure False [2018-06-18 13:38:10,027 INFO ]: Found implementation of procedure False [2018-06-18 13:38:10,027 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 13:38:10,027 INFO ]: Found specification of procedure state [2018-06-18 13:38:10,027 INFO ]: Found implementation of procedure state [2018-06-18 13:38:10,027 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 13:38:10,027 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 13:38:10,027 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 [2018-06-18 13:38:10,316 INFO ]: Using library mode [2018-06-18 13:38:10,317 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:38:10 BoogieIcfgContainer [2018-06-18 13:38:10,317 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 13:38:10,318 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 13:38:10,319 INFO ]: Initializing TraceAbstraction... [2018-06-18 13:38:10,322 INFO ]: TraceAbstraction initialized [2018-06-18 13:38:10,322 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 01:38:09" (1/3) ... [2018-06-18 13:38:10,324 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740776ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 01:38:10, skipping insertion in model container [2018-06-18 13:38:10,324 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 01:38:09" (2/3) ... [2018-06-18 13:38:10,324 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740776ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 01:38:10, skipping insertion in model container [2018-06-18 13:38:10,324 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 01:38:10" (3/3) ... [2018-06-18 13:38:10,326 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 13:38:10,337 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 13:38:10,352 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 13:38:10,401 INFO ]: Using default assertion order modulation [2018-06-18 13:38:10,402 INFO ]: Interprodecural is true [2018-06-18 13:38:10,402 INFO ]: Hoare is false [2018-06-18 13:38:10,402 INFO ]: Compute interpolants for FPandBP [2018-06-18 13:38:10,402 INFO ]: Backedges is TWOTRACK [2018-06-18 13:38:10,402 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 13:38:10,402 INFO ]: Difference is false [2018-06-18 13:38:10,402 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 13:38:10,402 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 13:38:10,422 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 13:38:10,435 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 13:38:10,435 INFO ]: Found error trace [2018-06-18 13:38:10,436 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:38:10,436 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:38:10,440 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 13:38:10,442 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:38:10,443 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:38:10,488 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:10,488 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:38:10,488 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:10,522 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:10,531 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:38:10,648 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 13:38:10,650 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 13:38:10,650 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 13:38:10,652 INFO ]: Interpolant automaton has 4 states [2018-06-18 13:38:10,662 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 13:38:10,663 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 13:38:10,665 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 13:38:10,780 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:38:10,780 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 13:38:10,781 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 13:38:10,782 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 13:38:10,782 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:38:10,799 INFO ]: With dead ends: 13 [2018-06-18 13:38:10,799 INFO ]: Without dead ends: 13 [2018-06-18 13:38:10,802 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 13:38:10,821 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 13:38:10,839 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 13:38:10,840 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 13:38:10,840 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 13:38:10,842 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 13:38:10,842 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:38:10,842 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 13:38:10,842 INFO ]: Interpolant automaton has 4 states. [2018-06-18 13:38:10,842 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 13:38:10,843 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 13:38:10,843 INFO ]: Found error trace [2018-06-18 13:38:10,843 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:38:10,843 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:38:10,844 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 13:38:10,844 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:38:10,844 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:38:10,845 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:10,845 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:38:10,845 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:10,938 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:10,939 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:38:11,378 WARN ]: Spent 240.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2018-06-18 13:38:11,560 WARN ]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-18 13:38:11,608 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:38:11,608 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:38:11,608 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 [2018-06-18 13:38:11,624 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:38:11,675 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:11,687 INFO ]: Computing forward predicates... [2018-06-18 13:38:12,009 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 3 [2018-06-18 13:38:12,272 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 13:38:12,307 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:38:12,307 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-18 13:38:12,308 INFO ]: Interpolant automaton has 9 states [2018-06-18 13:38:12,308 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-18 13:38:12,308 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-18 13:38:12,308 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-18 13:38:12,937 WARN ]: Spent 560.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-06-18 13:38:13,077 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:38:13,077 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 13:38:13,078 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 13:38:13,078 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-18 13:38:13,078 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:38:13,078 INFO ]: With dead ends: 15 [2018-06-18 13:38:13,078 INFO ]: Without dead ends: 15 [2018-06-18 13:38:13,079 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-18 13:38:13,080 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 13:38:13,082 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 13:38:13,082 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 13:38:13,083 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 13:38:13,083 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 13:38:13,083 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:38:13,083 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 13:38:13,083 INFO ]: Interpolant automaton has 9 states. [2018-06-18 13:38:13,083 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 13:38:13,083 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 13:38:13,083 INFO ]: Found error trace [2018-06-18 13:38:13,083 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:38:13,084 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:38:13,084 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 13:38:13,084 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:38:13,084 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:38:13,085 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:13,085 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 13:38:13,085 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:13,132 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:13,133 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:38:13,523 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:38:13,523 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:38:13,523 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 13:38:13,540 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 13:38:13,586 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 13:38:13,586 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:13,590 INFO ]: Computing forward predicates... [2018-06-18 13:38:13,753 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-06-18 13:38:13,938 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2018-06-18 13:38:14,095 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 13:38:14,115 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:38:14,115 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-18 13:38:14,115 INFO ]: Interpolant automaton has 11 states [2018-06-18 13:38:14,116 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-18 13:38:14,116 INFO ]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-06-18 13:38:14,116 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-18 13:38:14,282 WARN ]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-06-18 13:38:14,459 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:38:14,459 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 13:38:14,459 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 13:38:14,459 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-18 13:38:14,459 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:38:14,460 INFO ]: With dead ends: 17 [2018-06-18 13:38:14,460 INFO ]: Without dead ends: 17 [2018-06-18 13:38:14,460 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-06-18 13:38:14,461 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 13:38:14,463 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 13:38:14,463 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 13:38:14,464 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 13:38:14,464 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 13:38:14,464 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:38:14,464 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 13:38:14,464 INFO ]: Interpolant automaton has 11 states. [2018-06-18 13:38:14,464 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 13:38:14,465 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 13:38:14,465 INFO ]: Found error trace [2018-06-18 13:38:14,465 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:38:14,465 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:38:14,465 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-18 13:38:14,465 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:38:14,465 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:38:14,466 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:14,466 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:38:14,466 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:14,508 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:14,509 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:38:15,027 WARN ]: Spent 352.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-06-18 13:38:15,221 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 13:38:15,221 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:38:15,221 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:38:15,236 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-18 13:38:15,334 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 13:38:15,335 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:15,341 INFO ]: Computing forward predicates... [2018-06-18 13:38:15,915 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 18 [2018-06-18 13:38:16,394 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 13:38:16,414 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:38:16,414 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-06-18 13:38:16,414 INFO ]: Interpolant automaton has 15 states [2018-06-18 13:38:16,414 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-18 13:38:16,414 INFO ]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2018-06-18 13:38:16,414 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 15 states. [2018-06-18 13:38:16,636 WARN ]: Spent 152.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2018-06-18 13:38:16,953 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-06-18 13:38:16,973 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:38:16,973 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-18 13:38:16,974 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-18 13:38:16,974 INFO ]: Start accepts. Automaton has 15 states. Word has length 21 [2018-06-18 13:38:16,975 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:38:16,975 INFO ]: With dead ends: 19 [2018-06-18 13:38:16,975 INFO ]: Without dead ends: 19 [2018-06-18 13:38:16,976 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-06-18 13:38:16,976 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-18 13:38:16,979 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-18 13:38:16,979 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-18 13:38:16,980 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-18 13:38:16,980 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-18 13:38:16,980 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:38:16,980 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-18 13:38:16,980 INFO ]: Interpolant automaton has 15 states. [2018-06-18 13:38:16,980 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-18 13:38:16,981 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-18 13:38:16,981 INFO ]: Found error trace [2018-06-18 13:38:16,981 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:38:16,981 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:38:16,981 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-18 13:38:16,981 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:38:16,981 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:38:16,982 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:16,982 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:38:16,982 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:17,036 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:17,036 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:38:17,297 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 6 [2018-06-18 13:38:17,465 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2018-06-18 13:38:17,697 WARN ]: Spent 225.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2018-06-18 13:38:17,982 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 13:38:17,983 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:38:17,983 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 13:38:17,990 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-18 13:38:18,043 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 13:38:18,043 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:18,048 INFO ]: Computing forward predicates... [2018-06-18 13:38:21,171 WARN ]: Spent 2.78 s on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2018-06-18 13:38:22,012 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 13:38:22,032 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:38:22,032 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2018-06-18 13:38:22,032 INFO ]: Interpolant automaton has 19 states [2018-06-18 13:38:22,033 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-18 13:38:22,033 INFO ]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2018-06-18 13:38:22,033 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 19 states. [2018-06-18 13:38:22,664 WARN ]: Spent 602.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2018-06-18 13:38:23,085 WARN ]: Spent 267.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 34 [2018-06-18 13:38:23,256 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2018-06-18 13:38:23,556 WARN ]: Spent 271.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2018-06-18 13:38:23,590 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:38:23,590 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-18 13:38:23,594 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-18 13:38:23,594 INFO ]: Start accepts. Automaton has 19 states. Word has length 25 [2018-06-18 13:38:23,594 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:38:23,595 INFO ]: With dead ends: 21 [2018-06-18 13:38:23,595 INFO ]: Without dead ends: 21 [2018-06-18 13:38:23,596 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2018-06-18 13:38:23,596 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-18 13:38:23,598 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-18 13:38:23,598 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-18 13:38:23,599 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-18 13:38:23,599 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-18 13:38:23,599 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:38:23,599 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-18 13:38:23,599 INFO ]: Interpolant automaton has 19 states. [2018-06-18 13:38:23,599 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-18 13:38:23,600 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-18 13:38:23,600 INFO ]: Found error trace [2018-06-18 13:38:23,600 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:38:23,600 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:38:23,600 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-18 13:38:23,600 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:38:23,600 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:38:23,601 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:23,601 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:38:23,601 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:23,737 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:23,738 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:38:24,163 WARN ]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-18 13:38:24,889 WARN ]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-06-18 13:38:25,314 WARN ]: Spent 345.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2018-06-18 13:38:25,538 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-18 13:38:25,538 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:38:25,538 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) [2018-06-18 13:38:25,559 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:38:25,639 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-18 13:38:25,639 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:25,645 INFO ]: Computing forward predicates... [2018-06-18 13:38:26,683 WARN ]: Spent 599.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 48 [2018-06-18 13:38:30,701 WARN ]: Spent 3.70 s on a formula simplification. DAG size of input: 262 DAG size of output: 96 [2018-06-18 13:38:30,848 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2018-06-18 13:38:30,985 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2018-06-18 13:38:41,654 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-18 13:38:41,674 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 13:38:41,674 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2018-06-18 13:38:41,675 INFO ]: Interpolant automaton has 22 states [2018-06-18 13:38:41,675 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-18 13:38:41,675 INFO ]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2018-06-18 13:38:41,675 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 22 states. [2018-06-18 13:38:43,303 WARN ]: Spent 1.53 s on a formula simplification. DAG size of input: 136 DAG size of output: 113 [2018-06-18 13:38:44,731 WARN ]: Spent 1.38 s on a formula simplification. DAG size of input: 136 DAG size of output: 77 [2018-06-18 13:38:45,547 WARN ]: Spent 770.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 83 [2018-06-18 13:38:46,782 WARN ]: Spent 1.18 s on a formula simplification. DAG size of input: 139 DAG size of output: 84 [2018-06-18 13:38:48,824 WARN ]: Spent 1.99 s on a formula simplification. DAG size of input: 139 DAG size of output: 88 [2018-06-18 13:38:53,362 WARN ]: Spent 4.50 s on a formula simplification. DAG size of input: 140 DAG size of output: 108 [2018-06-18 13:38:53,540 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 13:38:53,540 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-18 13:38:53,540 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-18 13:38:53,540 INFO ]: Start accepts. Automaton has 22 states. Word has length 29 [2018-06-18 13:38:53,541 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 13:38:53,541 INFO ]: With dead ends: 23 [2018-06-18 13:38:53,541 INFO ]: Without dead ends: 23 [2018-06-18 13:38:53,542 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2018-06-18 13:38:53,542 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-18 13:38:53,545 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-18 13:38:53,546 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-18 13:38:53,546 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-18 13:38:53,546 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-18 13:38:53,546 INFO ]: Finished accepts. word is rejected. [2018-06-18 13:38:53,547 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-18 13:38:53,547 INFO ]: Interpolant automaton has 22 states. [2018-06-18 13:38:53,547 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-18 13:38:53,547 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-18 13:38:53,547 INFO ]: Found error trace [2018-06-18 13:38:53,548 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 13:38:53,548 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 13:38:53,548 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 6 times [2018-06-18 13:38:53,548 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 13:38:53,548 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 13:38:53,549 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:53,549 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 13:38:53,549 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 13:38:53,643 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:53,644 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 13:38:54,833 WARN ]: Spent 1.04 s on a formula simplification. DAG size of input: 14 DAG size of output: 14 [2018-06-18 13:38:55,107 WARN ]: Spent 131.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2018-06-18 13:38:55,296 WARN ]: Spent 170.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2018-06-18 13:38:55,473 WARN ]: Spent 119.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2018-06-18 13:38:55,657 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2018-06-18 13:38:56,193 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-18 13:38:56,193 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 13:38:56,193 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 13:38:56,200 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-18 13:38:56,287 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-18 13:38:56,287 INFO ]: Conjunction of SSA is unsat [2018-06-18 13:38:56,293 INFO ]: Computing forward predicates... [2018-06-18 13:38:57,559 WARN ]: Spent 1.08 s on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2018-06-18 13:38:58,449 WARN ]: Spent 834.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2018-06-18 13:38:59,907 WARN ]: Spent 1.36 s on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2018-06-18 13:39:00,341 WARN ]: Spent 390.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2018-06-18 13:39:01,274 WARN ]: Spent 871.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 40 [2018-06-18 13:39:01,353 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,355 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,357 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,358 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,360 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,361 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,363 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,365 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,366 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,368 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,370 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,371 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,373 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,376 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,378 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,381 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,383 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,385 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,387 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,388 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,390 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,392 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,394 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 13:39:01,396 WARN ]: expecting exponential blowup for input size 6 Received shutdown request... [2018-06-18 13:39:13,712 INFO ]: Timeout while computing interpolants [2018-06-18 13:39:13,913 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 13:39:13,913 WARN ]: Verification canceled [2018-06-18 13:39:13,917 WARN ]: Timeout [2018-06-18 13:39:13,917 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 01:39:13 BoogieIcfgContainer [2018-06-18 13:39:13,917 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 13:39:13,918 INFO ]: Toolchain (without parser) took 64083.32 ms. Allocated memory was 302.0 MB in the beginning and 1.0 GB in the end (delta: 701.0 MB). Free memory was 250.4 MB in the beginning and 224.1 MB in the end (delta: 26.3 MB). Peak memory consumption was 727.2 MB. Max. memory is 3.6 GB. [2018-06-18 13:39:13,919 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 302.0 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 13:39:13,919 INFO ]: ChcToBoogie took 109.55 ms. Allocated memory is still 302.0 MB. Free memory was 250.4 MB in the beginning and 245.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-18 13:39:13,919 INFO ]: Boogie Preprocessor took 52.09 ms. Allocated memory is still 302.0 MB. Free memory was 245.4 MB in the beginning and 244.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-18 13:39:13,920 INFO ]: RCFGBuilder took 312.98 ms. Allocated memory is still 302.0 MB. Free memory was 243.4 MB in the beginning and 230.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 3.6 GB. [2018-06-18 13:39:13,920 INFO ]: TraceAbstraction took 63598.89 ms. Allocated memory was 302.0 MB in the beginning and 1.0 GB in the end (delta: 701.0 MB). Free memory was 230.4 MB in the beginning and 224.1 MB in the end (delta: 6.2 MB). Peak memory consumption was 707.2 MB. Max. memory is 3.6 GB. [2018-06-18 13:39:13,923 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 302.0 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 109.55 ms. Allocated memory is still 302.0 MB. Free memory was 250.4 MB in the beginning and 245.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 52.09 ms. Allocated memory is still 302.0 MB. Free memory was 245.4 MB in the beginning and 244.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 312.98 ms. Allocated memory is still 302.0 MB. Free memory was 243.4 MB in the beginning and 230.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 63598.89 ms. Allocated memory was 302.0 MB in the beginning and 1.0 GB in the end (delta: 701.0 MB). Free memory was 230.4 MB in the beginning and 224.1 MB in the end (delta: 6.2 MB). Peak memory consumption was 707.2 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 34 with TraceHistMax 7, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 7 quantified variables from 4 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 63.5s OverallTime, 7 OverallIterations, 7 TraceHistogramMax, 15.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 116 SDslu, 333 SDs, 0 SdLazy, 285 SolverSat, 151 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 81 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 28.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=6, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 26.7s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 101317756 SizeOfPredicates, 193 NumberOfNonLiveVariables, 1330 ConjunctsInSsa, 201 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 70/250 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/sendmail-mime7to8_arr_three_chars_no_test_ok.c.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_13-39-13-933.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sendmail-mime7to8_arr_three_chars_no_test_ok.c.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_13-39-13-933.csv Completed graceful shutdown