java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/up3.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:43:59,288 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:43:59,289 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:43:59,300 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:43:59,300 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:43:59,301 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:43:59,302 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:43:59,307 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:43:59,308 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:43:59,310 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:43:59,311 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:43:59,311 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:43:59,312 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:43:59,313 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:43:59,313 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:43:59,316 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:43:59,318 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:43:59,319 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:43:59,321 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:43:59,322 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:43:59,323 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:43:59,325 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:43:59,325 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:43:59,326 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:43:59,326 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:43:59,327 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:43:59,328 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:43:59,329 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:43:59,330 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:43:59,330 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:43:59,330 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:43:59,331 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:43:59,331 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:43:59,332 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:43:59,333 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:43:59,333 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 15:43:59,345 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:43:59,346 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:43:59,346 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:43:59,346 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:43:59,347 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:43:59,348 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:43:59,348 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:43:59,348 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:43:59,348 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:43:59,348 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:43:59,349 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:43:59,349 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:43:59,349 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:43:59,349 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:43:59,349 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:43:59,350 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:43:59,350 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:43:59,350 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:43:59,350 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:43:59,352 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:43:59,352 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:43:59,391 INFO ]: Repository-Root is: /tmp [2018-06-22 15:43:59,404 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:43:59,407 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:43:59,408 INFO ]: Initializing SmtParser... [2018-06-22 15:43:59,471 INFO ]: SmtParser initialized [2018-06-22 15:43:59,472 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/up3.c.smt2 [2018-06-22 15:43:59,473 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 15:43:59,567 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/up3.c.smt2 unknown [2018-06-22 15:43:59,848 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/up3.c.smt2 [2018-06-22 15:43:59,853 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:43:59,859 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:43:59,859 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:43:59,859 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:43:59,859 INFO ]: ChcToBoogie initialized [2018-06-22 15:43:59,863 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:43:59" (1/1) ... [2018-06-22 15:43:59,909 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:43:59 Unit [2018-06-22 15:43:59,909 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:43:59,909 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:43:59,909 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:43:59,909 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:43:59,930 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:43:59" (1/1) ... [2018-06-22 15:43:59,930 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:43:59" (1/1) ... [2018-06-22 15:43:59,937 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:43:59" (1/1) ... [2018-06-22 15:43:59,937 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:43:59" (1/1) ... [2018-06-22 15:43:59,941 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:43:59" (1/1) ... [2018-06-22 15:43:59,942 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:43:59" (1/1) ... [2018-06-22 15:43:59,943 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:43:59" (1/1) ... [2018-06-22 15:43:59,945 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:43:59,945 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:43:59,945 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:43:59,945 INFO ]: RCFGBuilder initialized [2018-06-22 15:43:59,946 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:43:59" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 15:43:59,968 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:43:59,968 INFO ]: Found specification of procedure False [2018-06-22 15:43:59,968 INFO ]: Found implementation of procedure False [2018-06-22 15:43:59,968 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:43:59,968 INFO ]: Found specification of procedure state [2018-06-22 15:43:59,968 INFO ]: Found implementation of procedure state [2018-06-22 15:43:59,968 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:43:59,968 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:43:59,968 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:44:00,203 INFO ]: Using library mode [2018-06-22 15:44:00,203 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:44:00 BoogieIcfgContainer [2018-06-22 15:44:00,203 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:44:00,205 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:44:00,205 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:44:00,208 INFO ]: TraceAbstraction initialized [2018-06-22 15:44:00,208 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:43:59" (1/3) ... [2018-06-22 15:44:00,209 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41235a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:44:00, skipping insertion in model container [2018-06-22 15:44:00,209 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:43:59" (2/3) ... [2018-06-22 15:44:00,209 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41235a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:44:00, skipping insertion in model container [2018-06-22 15:44:00,209 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:44:00" (3/3) ... [2018-06-22 15:44:00,214 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:44:00,223 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:44:00,232 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:44:00,264 INFO ]: Using default assertion order modulation [2018-06-22 15:44:00,265 INFO ]: Interprodecural is true [2018-06-22 15:44:00,265 INFO ]: Hoare is false [2018-06-22 15:44:00,265 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:44:00,265 INFO ]: Backedges is TWOTRACK [2018-06-22 15:44:00,265 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:44:00,265 INFO ]: Difference is false [2018-06-22 15:44:00,265 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:44:00,265 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:44:00,278 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:44:00,288 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:44:00,288 INFO ]: Found error trace [2018-06-22 15:44:00,289 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:44:00,289 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:44:00,295 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 15:44:00,297 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:44:00,297 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:44:00,330 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:00,330 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:44:00,330 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:00,356 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:00,453 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:44:00,455 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:44:00,455 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:44:00,457 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:44:00,469 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:44:00,469 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:44:00,471 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:44:00,553 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:44:00,553 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:44:00,554 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:44:00,555 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:44:00,555 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:44:00,564 INFO ]: With dead ends: 13 [2018-06-22 15:44:00,564 INFO ]: Without dead ends: 13 [2018-06-22 15:44:00,566 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:44:00,578 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:44:00,600 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:44:00,602 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:44:00,602 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:44:00,603 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:44:00,603 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:44:00,603 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:44:00,603 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:44:00,603 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:44:00,604 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:44:00,604 INFO ]: Found error trace [2018-06-22 15:44:00,604 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:44:00,605 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:44:00,605 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 15:44:00,605 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:44:00,605 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:44:00,605 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:00,606 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:44:00,606 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:00,647 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:00,871 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:44:00,871 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:44:00,871 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:44:00,877 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:44:00,913 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:00,922 INFO ]: Computing forward predicates... [2018-06-22 15:44:01,157 WARN ]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 15:44:01,336 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:44:01,356 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:44:01,356 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 15:44:01,356 INFO ]: Interpolant automaton has 9 states [2018-06-22 15:44:01,356 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 15:44:01,356 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 15:44:01,356 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 15:44:01,595 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:44:01,595 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:44:01,596 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:44:01,596 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 15:44:01,596 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:44:01,598 INFO ]: With dead ends: 15 [2018-06-22 15:44:01,598 INFO ]: Without dead ends: 15 [2018-06-22 15:44:01,599 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:44:01,599 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:44:01,602 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:44:01,602 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:44:01,602 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:44:01,602 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:44:01,603 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:44:01,605 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:44:01,605 INFO ]: Interpolant automaton has 9 states. [2018-06-22 15:44:01,605 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:44:01,605 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:44:01,605 INFO ]: Found error trace [2018-06-22 15:44:01,605 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:44:01,606 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:44:01,606 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 15:44:01,606 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:44:01,606 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:44:01,607 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:01,607 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:44:01,607 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:01,663 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:01,856 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:44:01,856 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:44:01,856 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:44:01,865 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:44:01,907 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:44:01,931 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:01,934 INFO ]: Computing forward predicates... [2018-06-22 15:44:02,522 WARN ]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 15:44:02,621 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:44:02,654 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:44:02,654 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-22 15:44:02,654 INFO ]: Interpolant automaton has 11 states [2018-06-22 15:44:02,654 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 15:44:02,654 INFO ]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-06-22 15:44:02,654 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-22 15:44:02,963 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:44:02,963 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:44:02,964 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:44:02,964 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 15:44:02,964 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:44:02,965 INFO ]: With dead ends: 17 [2018-06-22 15:44:02,965 INFO ]: Without dead ends: 17 [2018-06-22 15:44:02,965 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-06-22 15:44:02,965 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:44:02,971 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:44:02,971 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:44:02,972 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:44:02,972 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:44:02,973 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:44:02,973 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:44:02,973 INFO ]: Interpolant automaton has 11 states. [2018-06-22 15:44:02,973 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:44:02,973 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:44:02,973 INFO ]: Found error trace [2018-06-22 15:44:02,973 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:44:02,973 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:44:02,974 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 15:44:02,974 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:44:02,974 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:44:02,974 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:02,974 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:44:02,974 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:03,003 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:03,384 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:44:03,384 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:44:03,384 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:44:03,399 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 15:44:03,432 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:44:03,432 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:03,436 INFO ]: Computing forward predicates... [2018-06-22 15:44:03,978 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:44:04,009 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:44:04,009 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2018-06-22 15:44:04,009 INFO ]: Interpolant automaton has 12 states [2018-06-22 15:44:04,010 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 15:44:04,010 INFO ]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:44:04,010 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 12 states. [2018-06-22 15:44:04,177 WARN ]: Spent 151.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2018-06-22 15:44:04,433 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2018-06-22 15:44:04,458 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:44:04,458 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 15:44:04,459 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 15:44:04,459 INFO ]: Start accepts. Automaton has 12 states. Word has length 21 [2018-06-22 15:44:04,459 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:44:04,460 INFO ]: With dead ends: 19 [2018-06-22 15:44:04,460 INFO ]: Without dead ends: 19 [2018-06-22 15:44:04,460 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:44:04,460 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 15:44:04,463 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 15:44:04,463 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 15:44:04,464 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 15:44:04,465 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 15:44:04,465 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:44:04,465 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 15:44:04,465 INFO ]: Interpolant automaton has 12 states. [2018-06-22 15:44:04,465 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 15:44:04,465 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 15:44:04,465 INFO ]: Found error trace [2018-06-22 15:44:04,465 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:44:04,465 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:44:04,466 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 15:44:04,466 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:44:04,466 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:44:04,466 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:04,466 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:44:04,467 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:04,507 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:04,825 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:44:04,825 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:44:04,825 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:44:04,830 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 15:44:04,870 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 15:44:04,870 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:04,874 INFO ]: Computing forward predicates... [2018-06-22 15:44:05,472 WARN ]: Spent 403.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 22 [2018-06-22 15:44:05,936 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:44:05,957 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:44:05,957 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2018-06-22 15:44:05,957 INFO ]: Interpolant automaton has 16 states [2018-06-22 15:44:05,957 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 15:44:05,957 INFO ]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:44:05,957 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 16 states. [2018-06-22 15:44:06,269 WARN ]: Spent 278.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2018-06-22 15:44:06,549 WARN ]: Spent 122.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 25 [2018-06-22 15:44:06,692 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:44:06,692 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 15:44:06,697 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 15:44:06,697 INFO ]: Start accepts. Automaton has 16 states. Word has length 25 [2018-06-22 15:44:06,697 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:44:06,698 INFO ]: With dead ends: 21 [2018-06-22 15:44:06,698 INFO ]: Without dead ends: 21 [2018-06-22 15:44:06,698 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2018-06-22 15:44:06,698 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 15:44:06,701 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 15:44:06,701 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 15:44:06,702 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 15:44:06,702 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 15:44:06,702 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:44:06,702 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 15:44:06,702 INFO ]: Interpolant automaton has 16 states. [2018-06-22 15:44:06,702 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 15:44:06,703 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 15:44:06,703 INFO ]: Found error trace [2018-06-22 15:44:06,703 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:44:06,703 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:44:06,704 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 15:44:06,704 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:44:06,704 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:44:06,704 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:06,704 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:44:06,704 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:06,766 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:07,265 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:44:07,265 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:44:07,265 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:44:07,272 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 15:44:07,314 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 15:44:07,314 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:07,318 INFO ]: Computing forward predicates... [2018-06-22 15:44:17,937 WARN ]: Spent 9.72 s on a formula simplification. DAG size of input: 591 DAG size of output: 59 [2018-06-22 15:44:19,770 WARN ]: Spent 1.22 s on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-06-22 15:44:21,410 WARN ]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 15:44:22,742 WARN ]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 15:44:22,784 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:44:22,815 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:44:22,815 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2018-06-22 15:44:22,816 INFO ]: Interpolant automaton has 20 states [2018-06-22 15:44:22,816 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 15:44:22,816 INFO ]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2018-06-22 15:44:22,816 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 20 states. [2018-06-22 15:44:23,964 WARN ]: Spent 702.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2018-06-22 15:44:24,307 WARN ]: Spent 207.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 19 [2018-06-22 15:44:24,596 WARN ]: Spent 234.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 38 [2018-06-22 15:44:25,146 WARN ]: Spent 409.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2018-06-22 15:44:25,420 WARN ]: Spent 225.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 26 [2018-06-22 15:44:25,594 WARN ]: Spent 144.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 22 [2018-06-22 15:44:26,142 WARN ]: Spent 513.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2018-06-22 15:44:26,171 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:44:26,171 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 15:44:26,174 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 15:44:26,174 INFO ]: Start accepts. Automaton has 20 states. Word has length 29 [2018-06-22 15:44:26,175 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:44:26,175 INFO ]: With dead ends: 25 [2018-06-22 15:44:26,175 INFO ]: Without dead ends: 25 [2018-06-22 15:44:26,176 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2018-06-22 15:44:26,176 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 15:44:26,180 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 15:44:26,180 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 15:44:26,181 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 15:44:26,181 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 29 [2018-06-22 15:44:26,181 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:44:26,181 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 15:44:26,181 INFO ]: Interpolant automaton has 20 states. [2018-06-22 15:44:26,181 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 15:44:26,182 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 15:44:26,182 INFO ]: Found error trace [2018-06-22 15:44:26,182 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:44:26,182 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:44:26,182 INFO ]: Analyzing trace with hash -1494134477, now seen corresponding path program 6 times [2018-06-22 15:44:26,182 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:44:26,182 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:44:26,183 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:26,183 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:44:26,183 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:26,343 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:26,968 WARN ]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-06-22 15:44:27,645 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 15:44:27,645 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:44:27,645 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:44:27,661 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 15:44:27,745 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-06-22 15:44:27,745 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:27,750 INFO ]: Computing forward predicates... [2018-06-22 15:44:28,135 WARN ]: Spent 272.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 31 [2018-06-22 15:44:28,438 WARN ]: Spent 139.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2018-06-22 15:44:28,708 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2018-06-22 15:44:29,642 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 15:44:29,662 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:44:29,662 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 30 [2018-06-22 15:44:29,662 INFO ]: Interpolant automaton has 30 states [2018-06-22 15:44:29,663 INFO ]: Constructing interpolant automaton starting with 30 interpolants. [2018-06-22 15:44:29,663 INFO ]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2018-06-22 15:44:29,663 INFO ]: Start difference. First operand 25 states and 26 transitions. Second operand 30 states. [2018-06-22 15:44:30,422 WARN ]: Spent 702.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 101 [2018-06-22 15:44:30,719 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 27 [2018-06-22 15:44:31,014 WARN ]: Spent 255.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 44 [2018-06-22 15:44:31,416 WARN ]: Spent 365.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 45 [2018-06-22 15:44:31,749 WARN ]: Spent 294.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 31 [2018-06-22 15:44:32,129 WARN ]: Spent 318.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 33 [2018-06-22 15:44:32,581 WARN ]: Spent 393.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 48 [2018-06-22 15:44:33,274 WARN ]: Spent 645.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 67 [2018-06-22 15:44:33,314 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:44:33,314 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-22 15:44:33,315 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 15:44:33,315 INFO ]: Start accepts. Automaton has 30 states. Word has length 37 [2018-06-22 15:44:33,315 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:44:33,316 INFO ]: With dead ends: 27 [2018-06-22 15:44:33,316 INFO ]: Without dead ends: 27 [2018-06-22 15:44:33,316 INFO ]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2018-06-22 15:44:33,317 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 15:44:33,320 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 15:44:33,320 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 15:44:33,321 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-22 15:44:33,321 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 37 [2018-06-22 15:44:33,321 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:44:33,321 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-22 15:44:33,321 INFO ]: Interpolant automaton has 30 states. [2018-06-22 15:44:33,321 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-22 15:44:33,322 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 15:44:33,322 INFO ]: Found error trace [2018-06-22 15:44:33,322 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:44:33,322 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:44:33,323 INFO ]: Analyzing trace with hash 1618126293, now seen corresponding path program 7 times [2018-06-22 15:44:33,323 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:44:33,323 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:44:33,323 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:33,323 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:44:33,323 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:33,378 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:33,623 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 15:44:34,495 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 15:44:34,495 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:44:34,495 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:44:34,501 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:44:34,547 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:34,557 INFO ]: Computing forward predicates... [2018-06-22 15:44:38,994 WARN ]: Spent 3.87 s on a formula simplification. DAG size of input: 541 DAG size of output: 52 [2018-06-22 15:44:39,570 WARN ]: Spent 482.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 42 [2018-06-22 15:44:39,728 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2018-06-22 15:44:40,682 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 15:44:40,703 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:44:40,703 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 31 [2018-06-22 15:44:40,703 INFO ]: Interpolant automaton has 31 states [2018-06-22 15:44:40,704 INFO ]: Constructing interpolant automaton starting with 31 interpolants. [2018-06-22 15:44:40,704 INFO ]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2018-06-22 15:44:40,704 INFO ]: Start difference. First operand 27 states and 28 transitions. Second operand 31 states. [2018-06-22 15:44:41,358 WARN ]: Spent 582.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 74 [2018-06-22 15:44:41,672 WARN ]: Spent 233.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 20 [2018-06-22 15:44:42,168 WARN ]: Spent 429.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 34 [2018-06-22 15:44:42,746 WARN ]: Spent 541.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 34 [2018-06-22 15:44:43,125 WARN ]: Spent 340.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 25 [2018-06-22 15:44:43,504 WARN ]: Spent 327.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 39 [2018-06-22 15:44:44,057 WARN ]: Spent 507.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 40 [2018-06-22 15:44:44,567 WARN ]: Spent 462.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 37 [2018-06-22 15:44:45,072 WARN ]: Spent 463.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 63 [2018-06-22 15:44:45,127 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:44:45,127 INFO ]: Finished difference Result 29 states and 30 transitions. [2018-06-22 15:44:45,128 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 15:44:45,128 INFO ]: Start accepts. Automaton has 31 states. Word has length 41 [2018-06-22 15:44:45,129 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:44:45,129 INFO ]: With dead ends: 29 [2018-06-22 15:44:45,129 INFO ]: Without dead ends: 29 [2018-06-22 15:44:45,130 INFO ]: 0 DeclaredPredicates, 69 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=285, Invalid=1275, Unknown=0, NotChecked=0, Total=1560 [2018-06-22 15:44:45,130 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 15:44:45,136 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 15:44:45,136 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 15:44:45,136 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-06-22 15:44:45,136 INFO ]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 41 [2018-06-22 15:44:45,137 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:44:45,137 INFO ]: Abstraction has 29 states and 30 transitions. [2018-06-22 15:44:45,137 INFO ]: Interpolant automaton has 31 states. [2018-06-22 15:44:45,137 INFO ]: Start isEmpty. Operand 29 states and 30 transitions. [2018-06-22 15:44:45,138 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 15:44:45,138 INFO ]: Found error trace [2018-06-22 15:44:45,138 INFO ]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:44:45,138 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:44:45,138 INFO ]: Analyzing trace with hash 996918775, now seen corresponding path program 8 times [2018-06-22 15:44:45,138 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:44:45,138 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:44:45,139 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:45,139 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:44:45,139 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:45,228 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:46,197 WARN ]: Spent 724.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2018-06-22 15:44:46,843 INFO ]: Checked inductivity of 171 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 15:44:46,843 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:44:46,843 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:44:46,848 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:44:46,932 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:44:46,932 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:46,941 INFO ]: Computing forward predicates... [2018-06-22 15:44:47,183 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2018-06-22 15:44:47,458 WARN ]: Spent 232.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2018-06-22 15:44:47,690 WARN ]: Spent 196.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2018-06-22 15:44:47,840 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2018-06-22 15:44:48,156 WARN ]: Spent 255.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-06-22 15:44:48,406 WARN ]: Spent 209.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2018-06-22 15:44:51,993 INFO ]: Checked inductivity of 171 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 15:44:52,014 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:44:52,014 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2018-06-22 15:44:52,014 INFO ]: Interpolant automaton has 41 states [2018-06-22 15:44:52,015 INFO ]: Constructing interpolant automaton starting with 41 interpolants. [2018-06-22 15:44:52,015 INFO ]: CoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2018-06-22 15:44:52,015 INFO ]: Start difference. First operand 29 states and 30 transitions. Second operand 41 states. [2018-06-22 15:44:52,911 WARN ]: Spent 809.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 104 [2018-06-22 15:44:53,277 WARN ]: Spent 274.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 37 [2018-06-22 15:44:53,745 WARN ]: Spent 361.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 43 [2018-06-22 15:44:54,073 WARN ]: Spent 276.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 39 [2018-06-22 15:44:54,561 WARN ]: Spent 436.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 40 [2018-06-22 15:44:55,108 WARN ]: Spent 499.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 52 [2018-06-22 15:44:55,622 WARN ]: Spent 448.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 59 [2018-06-22 15:44:56,116 WARN ]: Spent 443.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 61 [2018-06-22 15:44:56,934 WARN ]: Spent 676.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 88 [2018-06-22 15:44:57,511 WARN ]: Spent 522.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 64 [2018-06-22 15:44:57,556 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:44:57,556 INFO ]: Finished difference Result 31 states and 32 transitions. [2018-06-22 15:44:57,556 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 15:44:57,556 INFO ]: Start accepts. Automaton has 41 states. Word has length 45 [2018-06-22 15:44:57,557 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:44:57,557 INFO ]: With dead ends: 31 [2018-06-22 15:44:57,557 INFO ]: Without dead ends: 31 [2018-06-22 15:44:57,558 INFO ]: 0 DeclaredPredicates, 76 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=376, Invalid=2174, Unknown=0, NotChecked=0, Total=2550 [2018-06-22 15:44:57,558 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 15:44:57,564 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-06-22 15:44:57,564 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 15:44:57,565 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-06-22 15:44:57,565 INFO ]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 45 [2018-06-22 15:44:57,565 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:44:57,565 INFO ]: Abstraction has 31 states and 32 transitions. [2018-06-22 15:44:57,565 INFO ]: Interpolant automaton has 41 states. [2018-06-22 15:44:57,565 INFO ]: Start isEmpty. Operand 31 states and 32 transitions. [2018-06-22 15:44:57,566 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 15:44:57,566 INFO ]: Found error trace [2018-06-22 15:44:57,566 INFO ]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:44:57,566 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:44:57,567 INFO ]: Analyzing trace with hash -570306151, now seen corresponding path program 9 times [2018-06-22 15:44:57,567 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:44:57,567 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:44:57,567 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:57,567 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:44:57,567 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:44:57,680 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:58,335 WARN ]: Spent 408.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-06-22 15:44:59,375 INFO ]: Checked inductivity of 210 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-06-22 15:44:59,376 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:44:59,376 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 [2018-06-22 15:44:59,383 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 15:44:59,469 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-06-22 15:44:59,469 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:44:59,479 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 15:44:59,814 INFO ]: Timeout while computing interpolants [2018-06-22 15:45:00,015 WARN ]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:45:00,015 WARN ]: Verification canceled [2018-06-22 15:45:00,018 WARN ]: Timeout [2018-06-22 15:45:00,019 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:45:00 BoogieIcfgContainer [2018-06-22 15:45:00,019 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:45:00,020 INFO ]: Toolchain (without parser) took 60166.48 ms. Allocated memory was 301.5 MB in the beginning and 646.4 MB in the end (delta: 345.0 MB). Free memory was 255.8 MB in the beginning and 230.0 MB in the end (delta: 25.8 MB). Peak memory consumption was 370.8 MB. Max. memory is 3.6 GB. [2018-06-22 15:45:00,020 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 301.5 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:45:00,020 INFO ]: ChcToBoogie took 49.75 ms. Allocated memory is still 301.5 MB. Free memory is still 253.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:45:00,021 INFO ]: Boogie Preprocessor took 35.30 ms. Allocated memory is still 301.5 MB. Free memory was 253.8 MB in the beginning and 251.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:45:00,021 INFO ]: RCFGBuilder took 257.97 ms. Allocated memory is still 301.5 MB. Free memory was 251.8 MB in the beginning and 243.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:45:00,021 INFO ]: TraceAbstraction took 59813.83 ms. Allocated memory was 301.5 MB in the beginning and 646.4 MB in the end (delta: 345.0 MB). Free memory was 241.9 MB in the beginning and 230.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 356.8 MB. Max. memory is 3.6 GB. [2018-06-22 15:45:00,024 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 301.5 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 49.75 ms. Allocated memory is still 301.5 MB. Free memory is still 253.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * Boogie Preprocessor took 35.30 ms. Allocated memory is still 301.5 MB. Free memory was 253.8 MB in the beginning and 251.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 257.97 ms. Allocated memory is still 301.5 MB. Free memory was 251.8 MB in the beginning and 243.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 59813.83 ms. Allocated memory was 301.5 MB in the beginning and 646.4 MB in the end (delta: 345.0 MB). Free memory was 241.9 MB in the beginning and 230.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 356.8 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 50 with TraceHistMax 11, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 25 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 59.7s OverallTime, 10 OverallIterations, 11 TraceHistogramMax, 18.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 119 SDtfs, 474 SDslu, 828 SDs, 0 SdLazy, 738 SolverSat, 563 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 385 GetRequests, 169 SyntacticMatches, 9 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 45.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 36.9s InterpolantComputationTime, 465 NumberOfCodeBlocks, 465 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 448 ConstructedInterpolants, 0 QuantifiedInterpolants, 1347620 SizeOfPredicates, 460 NumberOfNonLiveVariables, 1582 ConjunctsInSsa, 366 ConjunctsInUnsatCore, 17 InterpolantComputations, 1 PerfectInterpolantSequences, 288/1074 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/up3.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-45-00-034.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/up3.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-45-00-034.csv Completed graceful shutdown