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/eldarica-misc/LIA/llreve/while_after_while_if_merged_safe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:06:23,168 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:06:23,173 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:06:23,187 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:06:23,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:06:23,188 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:06:23,191 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:06:23,194 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:06:23,195 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:06:23,196 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:06:23,196 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:06:23,198 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:06:23,199 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:06:23,200 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:06:23,201 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:06:23,202 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:06:23,205 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:06:23,207 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:06:23,217 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:06:23,218 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:06:23,219 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:06:23,221 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:06:23,221 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:06:23,221 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:06:23,224 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:06:23,225 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:06:23,225 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:06:23,226 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:06:23,227 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:06:23,230 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:06:23,231 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:06:23,231 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:06:23,232 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:06:23,232 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:06:23,233 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:06:23,233 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 11:06:23,253 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:06:23,254 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:06:23,254 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:06:23,254 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:06:23,255 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:06:23,255 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:06:23,255 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:06:23,258 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:06:23,258 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:06:23,258 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:06:23,259 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:06:23,259 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:06:23,259 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:06:23,259 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:06:23,259 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:06:23,260 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:06:23,260 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:06:23,260 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:06:23,260 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:06:23,261 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:06:23,262 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:06:23,297 INFO ]: Repository-Root is: /tmp [2018-06-22 11:06:23,311 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:06:23,319 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:06:23,321 INFO ]: Initializing SmtParser... [2018-06-22 11:06:23,321 INFO ]: SmtParser initialized [2018-06-22 11:06:23,322 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_merged_safe.c-1.smt2 [2018-06-22 11:06:23,323 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 11:06:23,414 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_merged_safe.c-1.smt2 unknown [2018-06-22 11:06:23,610 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_merged_safe.c-1.smt2 [2018-06-22 11:06:23,615 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:06:23,623 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:06:23,623 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:06:23,623 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:06:23,623 INFO ]: ChcToBoogie initialized [2018-06-22 11:06:23,627 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:06:23" (1/1) ... [2018-06-22 11:06:23,679 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:23 Unit [2018-06-22 11:06:23,679 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:06:23,681 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:06:23,682 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:06:23,682 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:06:23,703 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:23" (1/1) ... [2018-06-22 11:06:23,703 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:23" (1/1) ... [2018-06-22 11:06:23,715 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:23" (1/1) ... [2018-06-22 11:06:23,715 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:23" (1/1) ... [2018-06-22 11:06:23,725 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:23" (1/1) ... [2018-06-22 11:06:23,726 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:23" (1/1) ... [2018-06-22 11:06:23,728 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:23" (1/1) ... [2018-06-22 11:06:23,738 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:06:23,739 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:06:23,739 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:06:23,739 INFO ]: RCFGBuilder initialized [2018-06-22 11:06:23,740 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:23" (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 11:06:23,761 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:06:23,761 INFO ]: Found specification of procedure False [2018-06-22 11:06:23,761 INFO ]: Found implementation of procedure False [2018-06-22 11:06:23,761 INFO ]: Specification and implementation of procedure inv_main20 given in one single declaration [2018-06-22 11:06:23,761 INFO ]: Found specification of procedure inv_main20 [2018-06-22 11:06:23,761 INFO ]: Found implementation of procedure inv_main20 [2018-06-22 11:06:23,761 INFO ]: Specification and implementation of procedure inv_main15 given in one single declaration [2018-06-22 11:06:23,761 INFO ]: Found specification of procedure inv_main15 [2018-06-22 11:06:23,761 INFO ]: Found implementation of procedure inv_main15 [2018-06-22 11:06:23,761 INFO ]: Specification and implementation of procedure inv_main12 given in one single declaration [2018-06-22 11:06:23,761 INFO ]: Found specification of procedure inv_main12 [2018-06-22 11:06:23,761 INFO ]: Found implementation of procedure inv_main12 [2018-06-22 11:06:23,761 INFO ]: Specification and implementation of procedure inv_main7 given in one single declaration [2018-06-22 11:06:23,761 INFO ]: Found specification of procedure inv_main7 [2018-06-22 11:06:23,761 INFO ]: Found implementation of procedure inv_main7 [2018-06-22 11:06:23,761 INFO ]: Specification and implementation of procedure inv_main8 given in one single declaration [2018-06-22 11:06:23,761 INFO ]: Found specification of procedure inv_main8 [2018-06-22 11:06:23,761 INFO ]: Found implementation of procedure inv_main8 [2018-06-22 11:06:23,761 INFO ]: Specification and implementation of procedure inv_main3 given in one single declaration [2018-06-22 11:06:23,761 INFO ]: Found specification of procedure inv_main3 [2018-06-22 11:06:23,762 INFO ]: Found implementation of procedure inv_main3 [2018-06-22 11:06:23,762 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:06:23,762 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:06:23,762 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 11:06:24,128 INFO ]: Using library mode [2018-06-22 11:06:24,129 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:06:24 BoogieIcfgContainer [2018-06-22 11:06:24,129 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:06:24,131 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:06:24,131 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:06:24,134 INFO ]: TraceAbstraction initialized [2018-06-22 11:06:24,134 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:06:23" (1/3) ... [2018-06-22 11:06:24,135 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b160929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:06:24, skipping insertion in model container [2018-06-22 11:06:24,135 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:23" (2/3) ... [2018-06-22 11:06:24,135 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b160929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:06:24, skipping insertion in model container [2018-06-22 11:06:24,135 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:06:24" (3/3) ... [2018-06-22 11:06:24,137 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:06:24,146 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:06:24,159 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:06:24,197 INFO ]: Using default assertion order modulation [2018-06-22 11:06:24,197 INFO ]: Interprodecural is true [2018-06-22 11:06:24,197 INFO ]: Hoare is false [2018-06-22 11:06:24,197 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:06:24,197 INFO ]: Backedges is TWOTRACK [2018-06-22 11:06:24,197 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:06:24,197 INFO ]: Difference is false [2018-06-22 11:06:24,197 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:06:24,197 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:06:24,214 INFO ]: Start isEmpty. Operand 38 states. [2018-06-22 11:06:24,226 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:06:24,226 INFO ]: Found error trace [2018-06-22 11:06:24,227 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:24,228 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:24,231 INFO ]: Analyzing trace with hash -1414952511, now seen corresponding path program 1 times [2018-06-22 11:06:24,233 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:24,233 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:24,265 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:24,265 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:24,265 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:24,305 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:24,481 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:06:24,483 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:06:24,483 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 11:06:24,485 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:06:24,496 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:06:24,497 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:06:24,499 INFO ]: Start difference. First operand 38 states. Second operand 8 states. [2018-06-22 11:06:24,915 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:24,916 INFO ]: Finished difference Result 44 states and 58 transitions. [2018-06-22 11:06:24,916 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:06:24,917 INFO ]: Start accepts. Automaton has 8 states. Word has length 25 [2018-06-22 11:06:24,918 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:24,928 INFO ]: With dead ends: 44 [2018-06-22 11:06:24,928 INFO ]: Without dead ends: 42 [2018-06-22 11:06:24,930 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:06:24,948 INFO ]: Start minimizeSevpa. Operand 42 states. [2018-06-22 11:06:24,981 INFO ]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-06-22 11:06:24,984 INFO ]: Start removeUnreachable. Operand 42 states. [2018-06-22 11:06:24,986 INFO ]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2018-06-22 11:06:24,987 INFO ]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 25 [2018-06-22 11:06:24,988 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:24,988 INFO ]: Abstraction has 42 states and 56 transitions. [2018-06-22 11:06:24,988 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:06:24,989 INFO ]: Start isEmpty. Operand 42 states and 56 transitions. [2018-06-22 11:06:24,991 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:06:24,991 INFO ]: Found error trace [2018-06-22 11:06:24,991 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:24,991 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:24,991 INFO ]: Analyzing trace with hash 105249158, now seen corresponding path program 1 times [2018-06-22 11:06:24,991 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:24,991 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:24,993 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:24,993 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:24,993 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:25,019 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:25,227 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:06:25,227 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:25,227 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 11:06:25,236 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:25,284 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:25,292 INFO ]: Computing forward predicates... [2018-06-22 11:06:25,403 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:06:25,438 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:25,438 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-22 11:06:25,438 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:06:25,438 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:06:25,439 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:06:25,439 INFO ]: Start difference. First operand 42 states and 56 transitions. Second operand 9 states. [2018-06-22 11:06:25,715 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:25,715 INFO ]: Finished difference Result 50 states and 68 transitions. [2018-06-22 11:06:25,715 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:06:25,715 INFO ]: Start accepts. Automaton has 9 states. Word has length 29 [2018-06-22 11:06:25,716 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:25,718 INFO ]: With dead ends: 50 [2018-06-22 11:06:25,718 INFO ]: Without dead ends: 50 [2018-06-22 11:06:25,718 INFO ]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:06:25,719 INFO ]: Start minimizeSevpa. Operand 50 states. [2018-06-22 11:06:25,727 INFO ]: Finished minimizeSevpa. Reduced states from 50 to 46. [2018-06-22 11:06:25,727 INFO ]: Start removeUnreachable. Operand 46 states. [2018-06-22 11:06:25,729 INFO ]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2018-06-22 11:06:25,729 INFO ]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 29 [2018-06-22 11:06:25,730 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:25,730 INFO ]: Abstraction has 46 states and 63 transitions. [2018-06-22 11:06:25,730 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:06:25,730 INFO ]: Start isEmpty. Operand 46 states and 63 transitions. [2018-06-22 11:06:25,731 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:06:25,731 INFO ]: Found error trace [2018-06-22 11:06:25,731 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:25,732 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:25,732 INFO ]: Analyzing trace with hash -1551199093, now seen corresponding path program 1 times [2018-06-22 11:06:25,732 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:25,732 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:25,733 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:25,733 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:25,733 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:25,745 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:25,988 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:06:25,989 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:06:25,989 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:06:25,989 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:06:25,989 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:06:25,989 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:06:25,989 INFO ]: Start difference. First operand 46 states and 63 transitions. Second operand 5 states. [2018-06-22 11:06:26,245 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:26,245 INFO ]: Finished difference Result 59 states and 85 transitions. [2018-06-22 11:06:26,245 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:06:26,245 INFO ]: Start accepts. Automaton has 5 states. Word has length 29 [2018-06-22 11:06:26,246 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:26,248 INFO ]: With dead ends: 59 [2018-06-22 11:06:26,248 INFO ]: Without dead ends: 59 [2018-06-22 11:06:26,248 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:06:26,248 INFO ]: Start minimizeSevpa. Operand 59 states. [2018-06-22 11:06:26,267 INFO ]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-06-22 11:06:26,267 INFO ]: Start removeUnreachable. Operand 55 states. [2018-06-22 11:06:26,271 INFO ]: Finished removeUnreachable. Reduced from 55 states to 55 states and 77 transitions. [2018-06-22 11:06:26,272 INFO ]: Start accepts. Automaton has 55 states and 77 transitions. Word has length 29 [2018-06-22 11:06:26,272 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:26,272 INFO ]: Abstraction has 55 states and 77 transitions. [2018-06-22 11:06:26,272 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:06:26,272 INFO ]: Start isEmpty. Operand 55 states and 77 transitions. [2018-06-22 11:06:26,273 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:06:26,273 INFO ]: Found error trace [2018-06-22 11:06:26,273 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:26,273 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:26,273 INFO ]: Analyzing trace with hash 112925862, now seen corresponding path program 1 times [2018-06-22 11:06:26,273 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:26,273 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:26,274 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:26,274 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:26,274 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:26,287 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:26,346 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:06:26,346 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:06:26,346 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 11:06:26,346 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:06:26,346 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:06:26,346 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:06:26,346 INFO ]: Start difference. First operand 55 states and 77 transitions. Second operand 7 states. [2018-06-22 11:06:26,434 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:26,435 INFO ]: Finished difference Result 63 states and 89 transitions. [2018-06-22 11:06:26,435 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:06:26,435 INFO ]: Start accepts. Automaton has 7 states. Word has length 29 [2018-06-22 11:06:26,435 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:26,437 INFO ]: With dead ends: 63 [2018-06-22 11:06:26,437 INFO ]: Without dead ends: 59 [2018-06-22 11:06:26,437 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:06:26,437 INFO ]: Start minimizeSevpa. Operand 59 states. [2018-06-22 11:06:26,446 INFO ]: Finished minimizeSevpa. Reduced states from 59 to 57. [2018-06-22 11:06:26,446 INFO ]: Start removeUnreachable. Operand 57 states. [2018-06-22 11:06:26,451 INFO ]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2018-06-22 11:06:26,451 INFO ]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 29 [2018-06-22 11:06:26,452 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:26,452 INFO ]: Abstraction has 57 states and 80 transitions. [2018-06-22 11:06:26,452 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:06:26,452 INFO ]: Start isEmpty. Operand 57 states and 80 transitions. [2018-06-22 11:06:26,453 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:06:26,454 INFO ]: Found error trace [2018-06-22 11:06:26,454 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:26,454 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:26,454 INFO ]: Analyzing trace with hash 947556846, now seen corresponding path program 1 times [2018-06-22 11:06:26,454 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:26,454 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:26,455 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:26,455 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:26,455 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:26,465 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:26,946 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:06:26,946 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:06:26,946 INFO ]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-06-22 11:06:26,946 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:06:26,946 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:06:26,946 INFO ]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:06:26,947 INFO ]: Start difference. First operand 57 states and 80 transitions. Second operand 9 states. [2018-06-22 11:06:27,297 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:27,297 INFO ]: Finished difference Result 73 states and 102 transitions. [2018-06-22 11:06:27,298 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:06:27,298 INFO ]: Start accepts. Automaton has 9 states. Word has length 29 [2018-06-22 11:06:27,298 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:27,300 INFO ]: With dead ends: 73 [2018-06-22 11:06:27,300 INFO ]: Without dead ends: 71 [2018-06-22 11:06:27,300 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:06:27,300 INFO ]: Start minimizeSevpa. Operand 71 states. [2018-06-22 11:06:27,312 INFO ]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-06-22 11:06:27,312 INFO ]: Start removeUnreachable. Operand 67 states. [2018-06-22 11:06:27,314 INFO ]: Finished removeUnreachable. Reduced from 67 states to 67 states and 95 transitions. [2018-06-22 11:06:27,314 INFO ]: Start accepts. Automaton has 67 states and 95 transitions. Word has length 29 [2018-06-22 11:06:27,314 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:27,314 INFO ]: Abstraction has 67 states and 95 transitions. [2018-06-22 11:06:27,314 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:06:27,314 INFO ]: Start isEmpty. Operand 67 states and 95 transitions. [2018-06-22 11:06:27,316 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:06:27,316 INFO ]: Found error trace [2018-06-22 11:06:27,316 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:27,316 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:27,317 INFO ]: Analyzing trace with hash -1866038229, now seen corresponding path program 1 times [2018-06-22 11:06:27,317 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:27,317 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:27,317 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:27,318 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:27,318 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:27,349 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:27,694 INFO ]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:06:27,694 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:27,694 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 11:06:27,705 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:27,745 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:27,749 INFO ]: Computing forward predicates... [2018-06-22 11:06:27,909 INFO ]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:06:27,943 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:27,943 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2018-06-22 11:06:27,943 INFO ]: Interpolant automaton has 19 states [2018-06-22 11:06:27,944 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 11:06:27,944 INFO ]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:06:27,944 INFO ]: Start difference. First operand 67 states and 95 transitions. Second operand 19 states. [2018-06-22 11:06:28,391 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:28,392 INFO ]: Finished difference Result 83 states and 119 transitions. [2018-06-22 11:06:28,393 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:06:28,393 INFO ]: Start accepts. Automaton has 19 states. Word has length 33 [2018-06-22 11:06:28,394 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:28,395 INFO ]: With dead ends: 83 [2018-06-22 11:06:28,395 INFO ]: Without dead ends: 81 [2018-06-22 11:06:28,396 INFO ]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:06:28,396 INFO ]: Start minimizeSevpa. Operand 81 states. [2018-06-22 11:06:28,407 INFO ]: Finished minimizeSevpa. Reduced states from 81 to 73. [2018-06-22 11:06:28,407 INFO ]: Start removeUnreachable. Operand 73 states. [2018-06-22 11:06:28,409 INFO ]: Finished removeUnreachable. Reduced from 73 states to 73 states and 105 transitions. [2018-06-22 11:06:28,409 INFO ]: Start accepts. Automaton has 73 states and 105 transitions. Word has length 33 [2018-06-22 11:06:28,409 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:28,409 INFO ]: Abstraction has 73 states and 105 transitions. [2018-06-22 11:06:28,409 INFO ]: Interpolant automaton has 19 states. [2018-06-22 11:06:28,409 INFO ]: Start isEmpty. Operand 73 states and 105 transitions. [2018-06-22 11:06:28,411 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:06:28,411 INFO ]: Found error trace [2018-06-22 11:06:28,411 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:28,411 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:28,412 INFO ]: Analyzing trace with hash -655998608, now seen corresponding path program 1 times [2018-06-22 11:06:28,412 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:28,412 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:28,412 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:28,412 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:28,412 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:28,429 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:28,658 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:06:28,658 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:28,658 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 11:06:28,678 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:28,704 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:28,708 INFO ]: Computing forward predicates... [2018-06-22 11:06:28,748 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:06:28,771 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:28,771 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-22 11:06:28,772 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:06:28,772 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:06:28,772 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:06:28,772 INFO ]: Start difference. First operand 73 states and 105 transitions. Second operand 9 states. [2018-06-22 11:06:28,920 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:28,921 INFO ]: Finished difference Result 83 states and 117 transitions. [2018-06-22 11:06:28,922 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:06:28,922 INFO ]: Start accepts. Automaton has 9 states. Word has length 33 [2018-06-22 11:06:28,922 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:28,924 INFO ]: With dead ends: 83 [2018-06-22 11:06:28,924 INFO ]: Without dead ends: 81 [2018-06-22 11:06:28,924 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:06:28,924 INFO ]: Start minimizeSevpa. Operand 81 states. [2018-06-22 11:06:28,937 INFO ]: Finished minimizeSevpa. Reduced states from 81 to 79. [2018-06-22 11:06:28,937 INFO ]: Start removeUnreachable. Operand 79 states. [2018-06-22 11:06:28,939 INFO ]: Finished removeUnreachable. Reduced from 79 states to 79 states and 113 transitions. [2018-06-22 11:06:28,939 INFO ]: Start accepts. Automaton has 79 states and 113 transitions. Word has length 33 [2018-06-22 11:06:28,939 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:28,939 INFO ]: Abstraction has 79 states and 113 transitions. [2018-06-22 11:06:28,939 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:06:28,939 INFO ]: Start isEmpty. Operand 79 states and 113 transitions. [2018-06-22 11:06:28,941 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:06:28,941 INFO ]: Found error trace [2018-06-22 11:06:28,941 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:28,941 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:28,941 INFO ]: Analyzing trace with hash -1551765261, now seen corresponding path program 1 times [2018-06-22 11:06:28,941 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:28,941 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:28,942 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:28,942 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:28,942 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:28,950 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:29,044 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:06:29,044 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:29,044 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 11:06:29,050 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:29,068 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:29,071 INFO ]: Computing forward predicates... [2018-06-22 11:06:29,194 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:06:29,214 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:29,214 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-06-22 11:06:29,215 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:06:29,215 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:06:29,215 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:06:29,215 INFO ]: Start difference. First operand 79 states and 113 transitions. Second operand 10 states. [2018-06-22 11:06:29,291 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:29,291 INFO ]: Finished difference Result 97 states and 136 transitions. [2018-06-22 11:06:29,292 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:06:29,292 INFO ]: Start accepts. Automaton has 10 states. Word has length 33 [2018-06-22 11:06:29,293 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:29,293 INFO ]: With dead ends: 97 [2018-06-22 11:06:29,293 INFO ]: Without dead ends: 97 [2018-06-22 11:06:29,294 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:06:29,294 INFO ]: Start minimizeSevpa. Operand 97 states. [2018-06-22 11:06:29,305 INFO ]: Finished minimizeSevpa. Reduced states from 97 to 85. [2018-06-22 11:06:29,305 INFO ]: Start removeUnreachable. Operand 85 states. [2018-06-22 11:06:29,307 INFO ]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2018-06-22 11:06:29,307 INFO ]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 33 [2018-06-22 11:06:29,307 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:29,307 INFO ]: Abstraction has 85 states and 121 transitions. [2018-06-22 11:06:29,307 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:06:29,307 INFO ]: Start isEmpty. Operand 85 states and 121 transitions. [2018-06-22 11:06:29,308 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:06:29,308 INFO ]: Found error trace [2018-06-22 11:06:29,309 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:29,309 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:29,309 INFO ]: Analyzing trace with hash 886551800, now seen corresponding path program 1 times [2018-06-22 11:06:29,309 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:29,309 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:29,309 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:29,309 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:29,309 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:29,317 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:29,374 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:06:29,374 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:06:29,374 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 11:06:29,374 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:06:29,374 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:06:29,374 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:06:29,374 INFO ]: Start difference. First operand 85 states and 121 transitions. Second operand 7 states. [2018-06-22 11:06:29,500 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:29,500 INFO ]: Finished difference Result 95 states and 130 transitions. [2018-06-22 11:06:29,500 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:06:29,500 INFO ]: Start accepts. Automaton has 7 states. Word has length 33 [2018-06-22 11:06:29,500 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:29,502 INFO ]: With dead ends: 95 [2018-06-22 11:06:29,502 INFO ]: Without dead ends: 87 [2018-06-22 11:06:29,502 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:06:29,502 INFO ]: Start minimizeSevpa. Operand 87 states. [2018-06-22 11:06:29,513 INFO ]: Finished minimizeSevpa. Reduced states from 87 to 81. [2018-06-22 11:06:29,513 INFO ]: Start removeUnreachable. Operand 81 states. [2018-06-22 11:06:29,514 INFO ]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2018-06-22 11:06:29,514 INFO ]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 33 [2018-06-22 11:06:29,515 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:29,515 INFO ]: Abstraction has 81 states and 112 transitions. [2018-06-22 11:06:29,515 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:06:29,515 INFO ]: Start isEmpty. Operand 81 states and 112 transitions. [2018-06-22 11:06:29,516 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:06:29,516 INFO ]: Found error trace [2018-06-22 11:06:29,516 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:29,516 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:29,516 INFO ]: Analyzing trace with hash 137798291, now seen corresponding path program 1 times [2018-06-22 11:06:29,517 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:29,517 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:29,517 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:29,517 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:29,517 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:29,529 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:29,613 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:06:29,613 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:06:29,613 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 11:06:29,613 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:06:29,614 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:06:29,614 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:06:29,614 INFO ]: Start difference. First operand 81 states and 112 transitions. Second operand 8 states. [2018-06-22 11:06:29,734 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:29,734 INFO ]: Finished difference Result 91 states and 122 transitions. [2018-06-22 11:06:29,734 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:06:29,734 INFO ]: Start accepts. Automaton has 8 states. Word has length 33 [2018-06-22 11:06:29,734 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:29,735 INFO ]: With dead ends: 91 [2018-06-22 11:06:29,735 INFO ]: Without dead ends: 87 [2018-06-22 11:06:29,736 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:06:29,736 INFO ]: Start minimizeSevpa. Operand 87 states. [2018-06-22 11:06:29,747 INFO ]: Finished minimizeSevpa. Reduced states from 87 to 85. [2018-06-22 11:06:29,747 INFO ]: Start removeUnreachable. Operand 85 states. [2018-06-22 11:06:29,748 INFO ]: Finished removeUnreachable. Reduced from 85 states to 85 states and 116 transitions. [2018-06-22 11:06:29,749 INFO ]: Start accepts. Automaton has 85 states and 116 transitions. Word has length 33 [2018-06-22 11:06:29,749 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:29,749 INFO ]: Abstraction has 85 states and 116 transitions. [2018-06-22 11:06:29,749 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:06:29,749 INFO ]: Start isEmpty. Operand 85 states and 116 transitions. [2018-06-22 11:06:29,750 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:06:29,750 INFO ]: Found error trace [2018-06-22 11:06:29,750 INFO ]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:29,750 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:29,751 INFO ]: Analyzing trace with hash 1042828944, now seen corresponding path program 2 times [2018-06-22 11:06:29,751 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:29,751 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:29,751 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:29,751 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:29,751 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:29,762 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:30,137 INFO ]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:30,138 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:30,138 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 11:06:30,144 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:06:30,170 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:06:30,170 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:30,173 INFO ]: Computing forward predicates... [2018-06-22 11:06:30,275 INFO ]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:30,297 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:30,297 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-06-22 11:06:30,297 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:06:30,297 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:06:30,297 INFO ]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:06:30,298 INFO ]: Start difference. First operand 85 states and 116 transitions. Second operand 13 states. [2018-06-22 11:06:30,539 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:30,539 INFO ]: Finished difference Result 87 states and 117 transitions. [2018-06-22 11:06:30,539 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:06:30,539 INFO ]: Start accepts. Automaton has 13 states. Word has length 37 [2018-06-22 11:06:30,539 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:30,540 INFO ]: With dead ends: 87 [2018-06-22 11:06:30,541 INFO ]: Without dead ends: 81 [2018-06-22 11:06:30,541 INFO ]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:06:30,541 INFO ]: Start minimizeSevpa. Operand 81 states. [2018-06-22 11:06:30,548 INFO ]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-06-22 11:06:30,548 INFO ]: Start removeUnreachable. Operand 81 states. [2018-06-22 11:06:30,549 INFO ]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2018-06-22 11:06:30,549 INFO ]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 37 [2018-06-22 11:06:30,549 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:30,549 INFO ]: Abstraction has 81 states and 109 transitions. [2018-06-22 11:06:30,549 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:06:30,549 INFO ]: Start isEmpty. Operand 81 states and 109 transitions. [2018-06-22 11:06:30,551 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:06:30,551 INFO ]: Found error trace [2018-06-22 11:06:30,551 INFO ]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:30,551 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:30,551 INFO ]: Analyzing trace with hash 869893360, now seen corresponding path program 3 times [2018-06-22 11:06:30,551 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:30,551 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:30,552 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:30,552 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:30,552 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:30,567 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:30,691 INFO ]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:30,692 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:30,692 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 11:06:30,707 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:06:30,751 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 11:06:30,751 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:30,754 INFO ]: Computing forward predicates... [2018-06-22 11:06:30,817 INFO ]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:30,838 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:30,839 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2018-06-22 11:06:30,839 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:06:30,839 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:06:30,839 INFO ]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:06:30,839 INFO ]: Start difference. First operand 81 states and 109 transitions. Second operand 14 states. [2018-06-22 11:06:31,154 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:31,155 INFO ]: Finished difference Result 87 states and 116 transitions. [2018-06-22 11:06:31,156 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:06:31,156 INFO ]: Start accepts. Automaton has 14 states. Word has length 37 [2018-06-22 11:06:31,157 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:31,157 INFO ]: With dead ends: 87 [2018-06-22 11:06:31,157 INFO ]: Without dead ends: 87 [2018-06-22 11:06:31,157 INFO ]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:06:31,158 INFO ]: Start minimizeSevpa. Operand 87 states. [2018-06-22 11:06:31,164 INFO ]: Finished minimizeSevpa. Reduced states from 87 to 85. [2018-06-22 11:06:31,164 INFO ]: Start removeUnreachable. Operand 85 states. [2018-06-22 11:06:31,165 INFO ]: Finished removeUnreachable. Reduced from 85 states to 85 states and 114 transitions. [2018-06-22 11:06:31,165 INFO ]: Start accepts. Automaton has 85 states and 114 transitions. Word has length 37 [2018-06-22 11:06:31,166 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:31,166 INFO ]: Abstraction has 85 states and 114 transitions. [2018-06-22 11:06:31,166 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:06:31,166 INFO ]: Start isEmpty. Operand 85 states and 114 transitions. [2018-06-22 11:06:31,167 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:06:31,167 INFO ]: Found error trace [2018-06-22 11:06:31,167 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:31,167 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:31,167 INFO ]: Analyzing trace with hash 687947989, now seen corresponding path program 1 times [2018-06-22 11:06:31,167 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:31,167 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:31,168 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:31,168 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:31,168 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:31,174 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:31,224 INFO ]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:31,224 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:06:31,224 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 11:06:31,224 INFO ]: Interpolant automaton has 6 states [2018-06-22 11:06:31,224 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 11:06:31,224 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:06:31,224 INFO ]: Start difference. First operand 85 states and 114 transitions. Second operand 6 states. [2018-06-22 11:06:31,373 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:31,373 INFO ]: Finished difference Result 84 states and 119 transitions. [2018-06-22 11:06:31,373 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:06:31,373 INFO ]: Start accepts. Automaton has 6 states. Word has length 37 [2018-06-22 11:06:31,373 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:31,374 INFO ]: With dead ends: 84 [2018-06-22 11:06:31,374 INFO ]: Without dead ends: 78 [2018-06-22 11:06:31,374 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:06:31,374 INFO ]: Start minimizeSevpa. Operand 78 states. [2018-06-22 11:06:31,382 INFO ]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-06-22 11:06:31,382 INFO ]: Start removeUnreachable. Operand 78 states. [2018-06-22 11:06:31,383 INFO ]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2018-06-22 11:06:31,383 INFO ]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 37 [2018-06-22 11:06:31,383 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:31,383 INFO ]: Abstraction has 78 states and 102 transitions. [2018-06-22 11:06:31,383 INFO ]: Interpolant automaton has 6 states. [2018-06-22 11:06:31,383 INFO ]: Start isEmpty. Operand 78 states and 102 transitions. [2018-06-22 11:06:31,384 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:06:31,384 INFO ]: Found error trace [2018-06-22 11:06:31,384 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:31,384 INFO ]: === Iteration 14 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:31,384 INFO ]: Analyzing trace with hash -1883526824, now seen corresponding path program 1 times [2018-06-22 11:06:31,384 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:31,384 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:31,385 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:31,385 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:31,385 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:31,396 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:31,648 INFO ]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:06:31,648 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:31,648 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 11:06:31,654 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:31,678 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:31,682 INFO ]: Computing forward predicates... [2018-06-22 11:06:32,212 INFO ]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:06:32,234 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:32,235 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2018-06-22 11:06:32,235 INFO ]: Interpolant automaton has 21 states [2018-06-22 11:06:32,235 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 11:06:32,235 INFO ]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:06:32,235 INFO ]: Start difference. First operand 78 states and 102 transitions. Second operand 21 states. [2018-06-22 11:06:32,446 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:32,447 INFO ]: Finished difference Result 90 states and 115 transitions. [2018-06-22 11:06:32,448 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:06:32,448 INFO ]: Start accepts. Automaton has 21 states. Word has length 37 [2018-06-22 11:06:32,448 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:32,449 INFO ]: With dead ends: 90 [2018-06-22 11:06:32,449 INFO ]: Without dead ends: 88 [2018-06-22 11:06:32,449 INFO ]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2018-06-22 11:06:32,449 INFO ]: Start minimizeSevpa. Operand 88 states. [2018-06-22 11:06:32,455 INFO ]: Finished minimizeSevpa. Reduced states from 88 to 80. [2018-06-22 11:06:32,455 INFO ]: Start removeUnreachable. Operand 80 states. [2018-06-22 11:06:32,456 INFO ]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2018-06-22 11:06:32,456 INFO ]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 37 [2018-06-22 11:06:32,456 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:32,456 INFO ]: Abstraction has 80 states and 105 transitions. [2018-06-22 11:06:32,456 INFO ]: Interpolant automaton has 21 states. [2018-06-22 11:06:32,456 INFO ]: Start isEmpty. Operand 80 states and 105 transitions. [2018-06-22 11:06:32,457 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:06:32,457 INFO ]: Found error trace [2018-06-22 11:06:32,457 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:32,457 INFO ]: === Iteration 15 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:32,457 INFO ]: Analyzing trace with hash -361809030, now seen corresponding path program 1 times [2018-06-22 11:06:32,457 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:32,458 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:32,458 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:32,458 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:32,458 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:32,476 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:32,688 INFO ]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:06:32,688 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:32,688 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 11:06:32,693 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:32,729 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:32,732 INFO ]: Computing forward predicates... [2018-06-22 11:06:32,992 INFO ]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-22 11:06:33,021 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:33,021 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2018-06-22 11:06:33,022 INFO ]: Interpolant automaton has 21 states [2018-06-22 11:06:33,022 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 11:06:33,022 INFO ]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:06:33,022 INFO ]: Start difference. First operand 80 states and 105 transitions. Second operand 21 states. [2018-06-22 11:06:33,270 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:33,270 INFO ]: Finished difference Result 92 states and 119 transitions. [2018-06-22 11:06:33,270 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:06:33,270 INFO ]: Start accepts. Automaton has 21 states. Word has length 37 [2018-06-22 11:06:33,270 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:33,271 INFO ]: With dead ends: 92 [2018-06-22 11:06:33,271 INFO ]: Without dead ends: 88 [2018-06-22 11:06:33,271 INFO ]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2018-06-22 11:06:33,271 INFO ]: Start minimizeSevpa. Operand 88 states. [2018-06-22 11:06:33,277 INFO ]: Finished minimizeSevpa. Reduced states from 88 to 86. [2018-06-22 11:06:33,277 INFO ]: Start removeUnreachable. Operand 86 states. [2018-06-22 11:06:33,278 INFO ]: Finished removeUnreachable. Reduced from 86 states to 86 states and 113 transitions. [2018-06-22 11:06:33,278 INFO ]: Start accepts. Automaton has 86 states and 113 transitions. Word has length 37 [2018-06-22 11:06:33,278 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:33,278 INFO ]: Abstraction has 86 states and 113 transitions. [2018-06-22 11:06:33,278 INFO ]: Interpolant automaton has 21 states. [2018-06-22 11:06:33,278 INFO ]: Start isEmpty. Operand 86 states and 113 transitions. [2018-06-22 11:06:33,279 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:06:33,279 INFO ]: Found error trace [2018-06-22 11:06:33,279 INFO ]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:33,279 INFO ]: === Iteration 16 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:33,279 INFO ]: Analyzing trace with hash -1029372139, now seen corresponding path program 4 times [2018-06-22 11:06:33,279 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:33,279 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:33,280 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:33,280 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:33,280 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:33,291 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:33,654 INFO ]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:06:33,654 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:33,654 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 11:06:33,661 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:06:33,700 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:06:33,700 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:33,704 INFO ]: Computing forward predicates... [2018-06-22 11:06:33,961 INFO ]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:06:33,987 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:33,987 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2018-06-22 11:06:33,987 INFO ]: Interpolant automaton has 23 states [2018-06-22 11:06:33,987 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-22 11:06:33,988 INFO ]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2018-06-22 11:06:33,988 INFO ]: Start difference. First operand 86 states and 113 transitions. Second operand 23 states. [2018-06-22 11:06:34,253 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:34,253 INFO ]: Finished difference Result 102 states and 133 transitions. [2018-06-22 11:06:34,256 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 11:06:34,256 INFO ]: Start accepts. Automaton has 23 states. Word has length 41 [2018-06-22 11:06:34,256 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:34,257 INFO ]: With dead ends: 102 [2018-06-22 11:06:34,257 INFO ]: Without dead ends: 100 [2018-06-22 11:06:34,258 INFO ]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2018-06-22 11:06:34,258 INFO ]: Start minimizeSevpa. Operand 100 states. [2018-06-22 11:06:34,264 INFO ]: Finished minimizeSevpa. Reduced states from 100 to 94. [2018-06-22 11:06:34,264 INFO ]: Start removeUnreachable. Operand 94 states. [2018-06-22 11:06:34,265 INFO ]: Finished removeUnreachable. Reduced from 94 states to 94 states and 125 transitions. [2018-06-22 11:06:34,265 INFO ]: Start accepts. Automaton has 94 states and 125 transitions. Word has length 41 [2018-06-22 11:06:34,265 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:34,265 INFO ]: Abstraction has 94 states and 125 transitions. [2018-06-22 11:06:34,265 INFO ]: Interpolant automaton has 23 states. [2018-06-22 11:06:34,265 INFO ]: Start isEmpty. Operand 94 states and 125 transitions. [2018-06-22 11:06:34,266 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:06:34,266 INFO ]: Found error trace [2018-06-22 11:06:34,266 INFO ]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:34,266 INFO ]: === Iteration 17 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:34,267 INFO ]: Analyzing trace with hash -1366314627, now seen corresponding path program 2 times [2018-06-22 11:06:34,267 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:34,267 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:34,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:34,267 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:34,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:34,275 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:34,507 INFO ]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:34,507 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:34,518 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:34,524 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:06:34,548 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:06:34,548 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:34,550 INFO ]: Computing forward predicates... [2018-06-22 11:06:34,600 INFO ]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:34,634 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:34,634 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2018-06-22 11:06:34,634 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:06:34,635 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:06:34,635 INFO ]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:06:34,635 INFO ]: Start difference. First operand 94 states and 125 transitions. Second operand 14 states. [2018-06-22 11:06:35,065 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:35,065 INFO ]: Finished difference Result 114 states and 146 transitions. [2018-06-22 11:06:35,066 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:06:35,066 INFO ]: Start accepts. Automaton has 14 states. Word has length 41 [2018-06-22 11:06:35,066 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:35,067 INFO ]: With dead ends: 114 [2018-06-22 11:06:35,067 INFO ]: Without dead ends: 108 [2018-06-22 11:06:35,067 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:06:35,067 INFO ]: Start minimizeSevpa. Operand 108 states. [2018-06-22 11:06:35,072 INFO ]: Finished minimizeSevpa. Reduced states from 108 to 102. [2018-06-22 11:06:35,072 INFO ]: Start removeUnreachable. Operand 102 states. [2018-06-22 11:06:35,073 INFO ]: Finished removeUnreachable. Reduced from 102 states to 102 states and 134 transitions. [2018-06-22 11:06:35,073 INFO ]: Start accepts. Automaton has 102 states and 134 transitions. Word has length 41 [2018-06-22 11:06:35,073 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:35,073 INFO ]: Abstraction has 102 states and 134 transitions. [2018-06-22 11:06:35,073 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:06:35,073 INFO ]: Start isEmpty. Operand 102 states and 134 transitions. [2018-06-22 11:06:35,074 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:06:35,074 INFO ]: Found error trace [2018-06-22 11:06:35,074 INFO ]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:35,074 INFO ]: === Iteration 18 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:35,075 INFO ]: Analyzing trace with hash -2092549795, now seen corresponding path program 3 times [2018-06-22 11:06:35,075 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:35,075 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:35,075 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:35,075 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:35,075 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:35,082 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:36,090 INFO ]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:36,090 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:36,090 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:36,099 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:06:36,159 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 11:06:36,159 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:36,162 INFO ]: Computing forward predicates... [2018-06-22 11:06:36,241 INFO ]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:36,266 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:36,266 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-06-22 11:06:36,266 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:06:36,266 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:06:36,266 INFO ]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:06:36,267 INFO ]: Start difference. First operand 102 states and 134 transitions. Second operand 15 states. [2018-06-22 11:06:36,560 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:36,560 INFO ]: Finished difference Result 112 states and 144 transitions. [2018-06-22 11:06:36,560 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:06:36,560 INFO ]: Start accepts. Automaton has 15 states. Word has length 41 [2018-06-22 11:06:36,560 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:36,561 INFO ]: With dead ends: 112 [2018-06-22 11:06:36,561 INFO ]: Without dead ends: 112 [2018-06-22 11:06:36,561 INFO ]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:06:36,561 INFO ]: Start minimizeSevpa. Operand 112 states. [2018-06-22 11:06:36,567 INFO ]: Finished minimizeSevpa. Reduced states from 112 to 100. [2018-06-22 11:06:36,567 INFO ]: Start removeUnreachable. Operand 100 states. [2018-06-22 11:06:36,569 INFO ]: Finished removeUnreachable. Reduced from 100 states to 100 states and 132 transitions. [2018-06-22 11:06:36,569 INFO ]: Start accepts. Automaton has 100 states and 132 transitions. Word has length 41 [2018-06-22 11:06:36,569 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:36,569 INFO ]: Abstraction has 100 states and 132 transitions. [2018-06-22 11:06:36,569 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:06:36,569 INFO ]: Start isEmpty. Operand 100 states and 132 transitions. [2018-06-22 11:06:36,570 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:06:36,570 INFO ]: Found error trace [2018-06-22 11:06:36,570 INFO ]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:36,570 INFO ]: === Iteration 19 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:36,570 INFO ]: Analyzing trace with hash -1818768764, now seen corresponding path program 2 times [2018-06-22 11:06:36,570 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:36,570 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:36,571 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:36,571 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:36,571 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:36,582 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:36,951 INFO ]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:36,951 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:36,951 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:36,957 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:06:36,979 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:06:36,979 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:36,980 INFO ]: Computing forward predicates... [2018-06-22 11:06:37,011 INFO ]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:37,030 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:37,030 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-06-22 11:06:37,031 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:06:37,031 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:06:37,031 INFO ]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:06:37,031 INFO ]: Start difference. First operand 100 states and 132 transitions. Second operand 13 states. [2018-06-22 11:06:37,168 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:37,168 INFO ]: Finished difference Result 120 states and 153 transitions. [2018-06-22 11:06:37,169 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:06:37,169 INFO ]: Start accepts. Automaton has 13 states. Word has length 41 [2018-06-22 11:06:37,169 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:37,170 INFO ]: With dead ends: 120 [2018-06-22 11:06:37,170 INFO ]: Without dead ends: 116 [2018-06-22 11:06:37,170 INFO ]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:06:37,170 INFO ]: Start minimizeSevpa. Operand 116 states. [2018-06-22 11:06:37,177 INFO ]: Finished minimizeSevpa. Reduced states from 116 to 112. [2018-06-22 11:06:37,177 INFO ]: Start removeUnreachable. Operand 112 states. [2018-06-22 11:06:37,178 INFO ]: Finished removeUnreachable. Reduced from 112 states to 112 states and 145 transitions. [2018-06-22 11:06:37,178 INFO ]: Start accepts. Automaton has 112 states and 145 transitions. Word has length 41 [2018-06-22 11:06:37,178 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:37,178 INFO ]: Abstraction has 112 states and 145 transitions. [2018-06-22 11:06:37,178 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:06:37,178 INFO ]: Start isEmpty. Operand 112 states and 145 transitions. [2018-06-22 11:06:37,179 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:06:37,179 INFO ]: Found error trace [2018-06-22 11:06:37,179 INFO ]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:37,179 INFO ]: === Iteration 20 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:37,179 INFO ]: Analyzing trace with hash 566854396, now seen corresponding path program 3 times [2018-06-22 11:06:37,179 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:37,179 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:37,180 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:37,180 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:37,180 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:37,190 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:37,296 INFO ]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:37,296 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:37,296 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:37,302 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:06:37,341 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 11:06:37,341 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:37,344 INFO ]: Computing forward predicates... [2018-06-22 11:06:37,398 INFO ]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:37,431 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:37,431 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2018-06-22 11:06:37,431 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:06:37,431 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:06:37,431 INFO ]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:06:37,432 INFO ]: Start difference. First operand 112 states and 145 transitions. Second operand 14 states. [2018-06-22 11:06:37,679 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:37,679 INFO ]: Finished difference Result 120 states and 153 transitions. [2018-06-22 11:06:37,679 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:06:37,679 INFO ]: Start accepts. Automaton has 14 states. Word has length 41 [2018-06-22 11:06:37,679 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:37,680 INFO ]: With dead ends: 120 [2018-06-22 11:06:37,680 INFO ]: Without dead ends: 120 [2018-06-22 11:06:37,680 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:06:37,680 INFO ]: Start minimizeSevpa. Operand 120 states. [2018-06-22 11:06:37,687 INFO ]: Finished minimizeSevpa. Reduced states from 120 to 118. [2018-06-22 11:06:37,687 INFO ]: Start removeUnreachable. Operand 118 states. [2018-06-22 11:06:37,687 INFO ]: Finished removeUnreachable. Reduced from 118 states to 118 states and 151 transitions. [2018-06-22 11:06:37,687 INFO ]: Start accepts. Automaton has 118 states and 151 transitions. Word has length 41 [2018-06-22 11:06:37,688 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:37,688 INFO ]: Abstraction has 118 states and 151 transitions. [2018-06-22 11:06:37,688 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:06:37,688 INFO ]: Start isEmpty. Operand 118 states and 151 transitions. [2018-06-22 11:06:37,689 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:06:37,689 INFO ]: Found error trace [2018-06-22 11:06:37,689 INFO ]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:37,689 INFO ]: === Iteration 21 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:37,689 INFO ]: Analyzing trace with hash 1565321466, now seen corresponding path program 5 times [2018-06-22 11:06:37,689 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:37,689 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:37,690 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:37,690 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:37,690 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:37,697 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:37,803 INFO ]: Checked inductivity of 31 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:06:37,803 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:37,803 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:37,809 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:06:37,839 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 11:06:37,839 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:37,841 INFO ]: Computing forward predicates... [2018-06-22 11:06:37,894 INFO ]: Checked inductivity of 31 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:06:37,930 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:37,930 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2018-06-22 11:06:37,930 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:06:37,930 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:06:37,931 INFO ]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:06:37,931 INFO ]: Start difference. First operand 118 states and 151 transitions. Second operand 15 states. [2018-06-22 11:06:38,415 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:38,415 INFO ]: Finished difference Result 124 states and 156 transitions. [2018-06-22 11:06:38,416 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:06:38,416 INFO ]: Start accepts. Automaton has 15 states. Word has length 45 [2018-06-22 11:06:38,416 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:38,417 INFO ]: With dead ends: 124 [2018-06-22 11:06:38,417 INFO ]: Without dead ends: 112 [2018-06-22 11:06:38,417 INFO ]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:06:38,417 INFO ]: Start minimizeSevpa. Operand 112 states. [2018-06-22 11:06:38,425 INFO ]: Finished minimizeSevpa. Reduced states from 112 to 110. [2018-06-22 11:06:38,425 INFO ]: Start removeUnreachable. Operand 110 states. [2018-06-22 11:06:38,426 INFO ]: Finished removeUnreachable. Reduced from 110 states to 110 states and 140 transitions. [2018-06-22 11:06:38,426 INFO ]: Start accepts. Automaton has 110 states and 140 transitions. Word has length 45 [2018-06-22 11:06:38,426 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:38,426 INFO ]: Abstraction has 110 states and 140 transitions. [2018-06-22 11:06:38,426 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:06:38,426 INFO ]: Start isEmpty. Operand 110 states and 140 transitions. [2018-06-22 11:06:38,427 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:06:38,427 INFO ]: Found error trace [2018-06-22 11:06:38,427 INFO ]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:38,427 INFO ]: === Iteration 22 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:38,428 INFO ]: Analyzing trace with hash -561973030, now seen corresponding path program 6 times [2018-06-22 11:06:38,428 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:38,428 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:38,428 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:38,428 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:38,428 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:38,437 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:38,551 INFO ]: Checked inductivity of 31 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:06:38,551 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:38,551 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:38,561 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 11:06:38,586 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-06-22 11:06:38,586 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:38,589 INFO ]: Computing forward predicates... [2018-06-22 11:06:38,643 INFO ]: Checked inductivity of 31 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:06:38,663 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:38,663 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2018-06-22 11:06:38,664 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:06:38,664 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:06:38,664 INFO ]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:06:38,664 INFO ]: Start difference. First operand 110 states and 140 transitions. Second operand 16 states. [2018-06-22 11:06:38,822 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:38,822 INFO ]: Finished difference Result 120 states and 150 transitions. [2018-06-22 11:06:38,824 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:06:38,824 INFO ]: Start accepts. Automaton has 16 states. Word has length 45 [2018-06-22 11:06:38,824 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:38,825 INFO ]: With dead ends: 120 [2018-06-22 11:06:38,825 INFO ]: Without dead ends: 120 [2018-06-22 11:06:38,825 INFO ]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2018-06-22 11:06:38,825 INFO ]: Start minimizeSevpa. Operand 120 states. [2018-06-22 11:06:38,831 INFO ]: Finished minimizeSevpa. Reduced states from 120 to 114. [2018-06-22 11:06:38,831 INFO ]: Start removeUnreachable. Operand 114 states. [2018-06-22 11:06:38,832 INFO ]: Finished removeUnreachable. Reduced from 114 states to 114 states and 144 transitions. [2018-06-22 11:06:38,832 INFO ]: Start accepts. Automaton has 114 states and 144 transitions. Word has length 45 [2018-06-22 11:06:38,832 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:38,832 INFO ]: Abstraction has 114 states and 144 transitions. [2018-06-22 11:06:38,832 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:06:38,832 INFO ]: Start isEmpty. Operand 114 states and 144 transitions. [2018-06-22 11:06:38,833 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:06:38,833 INFO ]: Found error trace [2018-06-22 11:06:38,833 INFO ]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:38,833 INFO ]: === Iteration 23 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:38,833 INFO ]: Analyzing trace with hash 1609591046, now seen corresponding path program 4 times [2018-06-22 11:06:38,833 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:38,833 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:38,834 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:38,834 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:38,834 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:38,849 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:39,547 INFO ]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:06:39,547 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:39,547 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:39,553 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:06:39,581 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:06:39,581 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:39,584 INFO ]: Computing forward predicates... [2018-06-22 11:06:39,850 INFO ]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:06:39,870 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:39,870 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2018-06-22 11:06:39,871 INFO ]: Interpolant automaton has 25 states [2018-06-22 11:06:39,871 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 11:06:39,871 INFO ]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2018-06-22 11:06:39,871 INFO ]: Start difference. First operand 114 states and 144 transitions. Second operand 25 states. [2018-06-22 11:06:40,189 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:40,189 INFO ]: Finished difference Result 130 states and 162 transitions. [2018-06-22 11:06:40,190 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:06:40,190 INFO ]: Start accepts. Automaton has 25 states. Word has length 45 [2018-06-22 11:06:40,190 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:40,191 INFO ]: With dead ends: 130 [2018-06-22 11:06:40,191 INFO ]: Without dead ends: 126 [2018-06-22 11:06:40,191 INFO ]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:06:40,192 INFO ]: Start minimizeSevpa. Operand 126 states. [2018-06-22 11:06:40,198 INFO ]: Finished minimizeSevpa. Reduced states from 126 to 120. [2018-06-22 11:06:40,198 INFO ]: Start removeUnreachable. Operand 120 states. [2018-06-22 11:06:40,198 INFO ]: Finished removeUnreachable. Reduced from 120 states to 120 states and 152 transitions. [2018-06-22 11:06:40,199 INFO ]: Start accepts. Automaton has 120 states and 152 transitions. Word has length 45 [2018-06-22 11:06:40,199 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:40,199 INFO ]: Abstraction has 120 states and 152 transitions. [2018-06-22 11:06:40,199 INFO ]: Interpolant automaton has 25 states. [2018-06-22 11:06:40,199 INFO ]: Start isEmpty. Operand 120 states and 152 transitions. [2018-06-22 11:06:40,200 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:06:40,200 INFO ]: Found error trace [2018-06-22 11:06:40,200 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:40,200 INFO ]: === Iteration 24 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:40,200 INFO ]: Analyzing trace with hash -894817756, now seen corresponding path program 1 times [2018-06-22 11:06:40,200 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:40,200 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:40,201 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:40,201 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:40,201 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:40,210 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:40,517 INFO ]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:40,518 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:40,518 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:40,525 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:40,555 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:40,558 INFO ]: Computing forward predicates... [2018-06-22 11:06:40,854 INFO ]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:06:40,874 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:40,874 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 27 [2018-06-22 11:06:40,874 INFO ]: Interpolant automaton has 27 states [2018-06-22 11:06:40,874 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-22 11:06:40,874 INFO ]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2018-06-22 11:06:40,874 INFO ]: Start difference. First operand 120 states and 152 transitions. Second operand 27 states. [2018-06-22 11:06:41,217 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:41,218 INFO ]: Finished difference Result 134 states and 165 transitions. [2018-06-22 11:06:41,220 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 11:06:41,220 INFO ]: Start accepts. Automaton has 27 states. Word has length 45 [2018-06-22 11:06:41,220 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:41,221 INFO ]: With dead ends: 134 [2018-06-22 11:06:41,221 INFO ]: Without dead ends: 124 [2018-06-22 11:06:41,222 INFO ]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2018-06-22 11:06:41,222 INFO ]: Start minimizeSevpa. Operand 124 states. [2018-06-22 11:06:41,228 INFO ]: Finished minimizeSevpa. Reduced states from 124 to 116. [2018-06-22 11:06:41,228 INFO ]: Start removeUnreachable. Operand 116 states. [2018-06-22 11:06:41,229 INFO ]: Finished removeUnreachable. Reduced from 116 states to 116 states and 147 transitions. [2018-06-22 11:06:41,229 INFO ]: Start accepts. Automaton has 116 states and 147 transitions. Word has length 45 [2018-06-22 11:06:41,229 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:41,229 INFO ]: Abstraction has 116 states and 147 transitions. [2018-06-22 11:06:41,229 INFO ]: Interpolant automaton has 27 states. [2018-06-22 11:06:41,229 INFO ]: Start isEmpty. Operand 116 states and 147 transitions. [2018-06-22 11:06:41,230 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:06:41,230 INFO ]: Found error trace [2018-06-22 11:06:41,230 INFO ]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:41,230 INFO ]: === Iteration 25 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:41,231 INFO ]: Analyzing trace with hash 2053810498, now seen corresponding path program 4 times [2018-06-22 11:06:41,231 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:41,231 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:41,231 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:41,231 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:41,231 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:41,241 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:41,578 INFO ]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:06:41,578 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:41,578 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:41,586 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:06:41,610 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:06:41,610 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:41,612 INFO ]: Computing forward predicates... [2018-06-22 11:06:41,857 INFO ]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:06:41,878 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:41,878 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2018-06-22 11:06:41,878 INFO ]: Interpolant automaton has 25 states [2018-06-22 11:06:41,878 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 11:06:41,878 INFO ]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2018-06-22 11:06:41,878 INFO ]: Start difference. First operand 116 states and 147 transitions. Second operand 25 states. [2018-06-22 11:06:42,145 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:42,145 INFO ]: Finished difference Result 132 states and 164 transitions. [2018-06-22 11:06:42,145 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:06:42,145 INFO ]: Start accepts. Automaton has 25 states. Word has length 45 [2018-06-22 11:06:42,145 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:42,146 INFO ]: With dead ends: 132 [2018-06-22 11:06:42,146 INFO ]: Without dead ends: 130 [2018-06-22 11:06:42,146 INFO ]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:06:42,146 INFO ]: Start minimizeSevpa. Operand 130 states. [2018-06-22 11:06:42,151 INFO ]: Finished minimizeSevpa. Reduced states from 130 to 118. [2018-06-22 11:06:42,151 INFO ]: Start removeUnreachable. Operand 118 states. [2018-06-22 11:06:42,152 INFO ]: Finished removeUnreachable. Reduced from 118 states to 118 states and 150 transitions. [2018-06-22 11:06:42,152 INFO ]: Start accepts. Automaton has 118 states and 150 transitions. Word has length 45 [2018-06-22 11:06:42,152 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:42,152 INFO ]: Abstraction has 118 states and 150 transitions. [2018-06-22 11:06:42,152 INFO ]: Interpolant automaton has 25 states. [2018-06-22 11:06:42,152 INFO ]: Start isEmpty. Operand 118 states and 150 transitions. [2018-06-22 11:06:42,153 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:06:42,153 INFO ]: Found error trace [2018-06-22 11:06:42,154 INFO ]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:42,154 INFO ]: === Iteration 26 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:42,154 INFO ]: Analyzing trace with hash -1233825153, now seen corresponding path program 7 times [2018-06-22 11:06:42,154 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:42,154 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:42,154 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:42,154 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:42,154 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:42,166 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:42,464 INFO ]: Checked inductivity of 42 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-06-22 11:06:42,464 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:42,464 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:42,470 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:42,505 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:42,509 INFO ]: Computing forward predicates... [2018-06-22 11:06:42,737 INFO ]: Checked inductivity of 42 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-06-22 11:06:42,756 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:42,756 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 27 [2018-06-22 11:06:42,757 INFO ]: Interpolant automaton has 27 states [2018-06-22 11:06:42,757 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-22 11:06:42,757 INFO ]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2018-06-22 11:06:42,757 INFO ]: Start difference. First operand 118 states and 150 transitions. Second operand 27 states. [2018-06-22 11:06:43,016 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:43,016 INFO ]: Finished difference Result 140 states and 176 transitions. [2018-06-22 11:06:43,017 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 11:06:43,017 INFO ]: Start accepts. Automaton has 27 states. Word has length 49 [2018-06-22 11:06:43,017 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:43,018 INFO ]: With dead ends: 140 [2018-06-22 11:06:43,018 INFO ]: Without dead ends: 138 [2018-06-22 11:06:43,018 INFO ]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 11:06:43,018 INFO ]: Start minimizeSevpa. Operand 138 states. [2018-06-22 11:06:43,024 INFO ]: Finished minimizeSevpa. Reduced states from 138 to 128. [2018-06-22 11:06:43,025 INFO ]: Start removeUnreachable. Operand 128 states. [2018-06-22 11:06:43,026 INFO ]: Finished removeUnreachable. Reduced from 128 states to 128 states and 164 transitions. [2018-06-22 11:06:43,026 INFO ]: Start accepts. Automaton has 128 states and 164 transitions. Word has length 49 [2018-06-22 11:06:43,026 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:43,026 INFO ]: Abstraction has 128 states and 164 transitions. [2018-06-22 11:06:43,026 INFO ]: Interpolant automaton has 27 states. [2018-06-22 11:06:43,026 INFO ]: Start isEmpty. Operand 128 states and 164 transitions. [2018-06-22 11:06:43,027 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:06:43,027 INFO ]: Found error trace [2018-06-22 11:06:43,027 INFO ]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:43,027 INFO ]: === Iteration 27 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:43,027 INFO ]: Analyzing trace with hash -1735997304, now seen corresponding path program 5 times [2018-06-22 11:06:43,027 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:43,027 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:43,028 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:43,028 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:43,028 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:43,035 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:43,158 INFO ]: Checked inductivity of 31 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:06:43,158 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:43,158 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:43,164 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:06:43,192 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 11:06:43,192 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:43,194 INFO ]: Computing forward predicates... [2018-06-22 11:06:43,282 INFO ]: Checked inductivity of 31 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:06:43,310 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:43,310 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2018-06-22 11:06:43,310 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:06:43,311 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:06:43,311 INFO ]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:06:43,311 INFO ]: Start difference. First operand 128 states and 164 transitions. Second operand 16 states. [2018-06-22 11:06:43,631 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:43,631 INFO ]: Finished difference Result 152 states and 190 transitions. [2018-06-22 11:06:43,631 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:06:43,631 INFO ]: Start accepts. Automaton has 16 states. Word has length 49 [2018-06-22 11:06:43,631 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:43,632 INFO ]: With dead ends: 152 [2018-06-22 11:06:43,632 INFO ]: Without dead ends: 152 [2018-06-22 11:06:43,632 INFO ]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2018-06-22 11:06:43,633 INFO ]: Start minimizeSevpa. Operand 152 states. [2018-06-22 11:06:43,639 INFO ]: Finished minimizeSevpa. Reduced states from 152 to 136. [2018-06-22 11:06:43,639 INFO ]: Start removeUnreachable. Operand 136 states. [2018-06-22 11:06:43,640 INFO ]: Finished removeUnreachable. Reduced from 136 states to 136 states and 174 transitions. [2018-06-22 11:06:43,640 INFO ]: Start accepts. Automaton has 136 states and 174 transitions. Word has length 49 [2018-06-22 11:06:43,640 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:43,640 INFO ]: Abstraction has 136 states and 174 transitions. [2018-06-22 11:06:43,640 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:06:43,640 INFO ]: Start isEmpty. Operand 136 states and 174 transitions. [2018-06-22 11:06:43,641 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:06:43,641 INFO ]: Found error trace [2018-06-22 11:06:43,641 INFO ]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:43,641 INFO ]: === Iteration 28 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:43,642 INFO ]: Analyzing trace with hash -960207856, now seen corresponding path program 6 times [2018-06-22 11:06:43,642 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:43,642 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:43,642 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:43,642 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:43,642 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:43,651 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:43,745 INFO ]: Checked inductivity of 31 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:06:43,745 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:43,745 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:43,750 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 11:06:43,787 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-06-22 11:06:43,787 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:43,789 INFO ]: Computing forward predicates... [2018-06-22 11:06:43,818 INFO ]: Checked inductivity of 31 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:06:43,838 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:43,838 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2018-06-22 11:06:43,838 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:06:43,839 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:06:43,839 INFO ]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:06:43,839 INFO ]: Start difference. First operand 136 states and 174 transitions. Second operand 15 states. [2018-06-22 11:06:44,004 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:44,004 INFO ]: Finished difference Result 158 states and 195 transitions. [2018-06-22 11:06:44,004 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:06:44,005 INFO ]: Start accepts. Automaton has 15 states. Word has length 49 [2018-06-22 11:06:44,005 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:44,005 INFO ]: With dead ends: 158 [2018-06-22 11:06:44,005 INFO ]: Without dead ends: 152 [2018-06-22 11:06:44,005 INFO ]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:06:44,006 INFO ]: Start minimizeSevpa. Operand 152 states. [2018-06-22 11:06:44,011 INFO ]: Finished minimizeSevpa. Reduced states from 152 to 144. [2018-06-22 11:06:44,012 INFO ]: Start removeUnreachable. Operand 144 states. [2018-06-22 11:06:44,012 INFO ]: Finished removeUnreachable. Reduced from 144 states to 144 states and 181 transitions. [2018-06-22 11:06:44,012 INFO ]: Start accepts. Automaton has 144 states and 181 transitions. Word has length 49 [2018-06-22 11:06:44,013 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:44,013 INFO ]: Abstraction has 144 states and 181 transitions. [2018-06-22 11:06:44,013 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:06:44,013 INFO ]: Start isEmpty. Operand 144 states and 181 transitions. [2018-06-22 11:06:44,014 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:06:44,014 INFO ]: Found error trace [2018-06-22 11:06:44,014 INFO ]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:44,014 INFO ]: === Iteration 29 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:44,014 INFO ]: Analyzing trace with hash -1828009401, now seen corresponding path program 5 times [2018-06-22 11:06:44,014 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:44,014 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:44,018 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:44,019 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:44,019 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:44,026 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:44,145 INFO ]: Checked inductivity of 31 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:06:44,145 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:44,145 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:44,152 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:06:44,206 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 11:06:44,206 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:44,208 INFO ]: Computing forward predicates... [2018-06-22 11:06:44,289 INFO ]: Checked inductivity of 31 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:06:44,309 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:44,310 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 17 [2018-06-22 11:06:44,310 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:06:44,310 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:06:44,310 INFO ]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:06:44,310 INFO ]: Start difference. First operand 144 states and 181 transitions. Second operand 17 states. [2018-06-22 11:06:44,684 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:44,684 INFO ]: Finished difference Result 186 states and 227 transitions. [2018-06-22 11:06:44,707 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 11:06:44,707 INFO ]: Start accepts. Automaton has 17 states. Word has length 49 [2018-06-22 11:06:44,707 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:44,708 INFO ]: With dead ends: 186 [2018-06-22 11:06:44,708 INFO ]: Without dead ends: 186 [2018-06-22 11:06:44,708 INFO ]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2018-06-22 11:06:44,708 INFO ]: Start minimizeSevpa. Operand 186 states. [2018-06-22 11:06:44,717 INFO ]: Finished minimizeSevpa. Reduced states from 186 to 160. [2018-06-22 11:06:44,717 INFO ]: Start removeUnreachable. Operand 160 states. [2018-06-22 11:06:44,718 INFO ]: Finished removeUnreachable. Reduced from 160 states to 160 states and 200 transitions. [2018-06-22 11:06:44,718 INFO ]: Start accepts. Automaton has 160 states and 200 transitions. Word has length 49 [2018-06-22 11:06:44,718 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:44,718 INFO ]: Abstraction has 160 states and 200 transitions. [2018-06-22 11:06:44,718 INFO ]: Interpolant automaton has 17 states. [2018-06-22 11:06:44,718 INFO ]: Start isEmpty. Operand 160 states and 200 transitions. [2018-06-22 11:06:44,720 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:06:44,720 INFO ]: Found error trace [2018-06-22 11:06:44,720 INFO ]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:44,720 INFO ]: === Iteration 30 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:44,720 INFO ]: Analyzing trace with hash -21722905, now seen corresponding path program 6 times [2018-06-22 11:06:44,720 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:44,720 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:44,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:44,721 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:44,721 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:44,727 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:45,625 INFO ]: Checked inductivity of 31 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:06:45,625 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:45,625 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:45,633 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 11:06:45,663 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-06-22 11:06:45,663 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:45,665 INFO ]: Computing forward predicates... [2018-06-22 11:06:45,694 INFO ]: Checked inductivity of 31 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:06:45,714 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:45,714 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2018-06-22 11:06:45,714 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:06:45,714 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:06:45,715 INFO ]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:06:45,715 INFO ]: Start difference. First operand 160 states and 200 transitions. Second operand 16 states. [2018-06-22 11:06:45,956 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:45,956 INFO ]: Finished difference Result 180 states and 220 transitions. [2018-06-22 11:06:45,956 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:06:45,956 INFO ]: Start accepts. Automaton has 16 states. Word has length 49 [2018-06-22 11:06:45,956 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:45,958 INFO ]: With dead ends: 180 [2018-06-22 11:06:45,958 INFO ]: Without dead ends: 172 [2018-06-22 11:06:45,958 INFO ]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2018-06-22 11:06:45,958 INFO ]: Start minimizeSevpa. Operand 172 states. [2018-06-22 11:06:45,966 INFO ]: Finished minimizeSevpa. Reduced states from 172 to 164. [2018-06-22 11:06:45,967 INFO ]: Start removeUnreachable. Operand 164 states. [2018-06-22 11:06:45,968 INFO ]: Finished removeUnreachable. Reduced from 164 states to 164 states and 204 transitions. [2018-06-22 11:06:45,968 INFO ]: Start accepts. Automaton has 164 states and 204 transitions. Word has length 49 [2018-06-22 11:06:45,968 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:45,968 INFO ]: Abstraction has 164 states and 204 transitions. [2018-06-22 11:06:45,968 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:06:45,968 INFO ]: Start isEmpty. Operand 164 states and 204 transitions. [2018-06-22 11:06:45,969 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-22 11:06:45,969 INFO ]: Found error trace [2018-06-22 11:06:45,969 INFO ]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:45,969 INFO ]: === Iteration 31 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:45,969 INFO ]: Analyzing trace with hash -1203164188, now seen corresponding path program 8 times [2018-06-22 11:06:45,969 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:45,969 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:45,970 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:45,970 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:45,970 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:45,978 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:46,196 INFO ]: Checked inductivity of 57 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:06:46,196 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:46,196 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:46,202 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:06:46,262 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:06:46,262 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:46,266 INFO ]: Computing forward predicates... [2018-06-22 11:06:46,368 INFO ]: Checked inductivity of 57 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 11:06:46,387 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:46,387 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 17 [2018-06-22 11:06:46,387 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:06:46,388 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:06:46,388 INFO ]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:06:46,388 INFO ]: Start difference. First operand 164 states and 204 transitions. Second operand 17 states. [2018-06-22 11:06:46,585 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:46,585 INFO ]: Finished difference Result 174 states and 213 transitions. [2018-06-22 11:06:46,585 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 11:06:46,585 INFO ]: Start accepts. Automaton has 17 states. Word has length 53 [2018-06-22 11:06:46,586 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:46,586 INFO ]: With dead ends: 174 [2018-06-22 11:06:46,586 INFO ]: Without dead ends: 160 [2018-06-22 11:06:46,586 INFO ]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2018-06-22 11:06:46,587 INFO ]: Start minimizeSevpa. Operand 160 states. [2018-06-22 11:06:46,595 INFO ]: Finished minimizeSevpa. Reduced states from 160 to 156. [2018-06-22 11:06:46,595 INFO ]: Start removeUnreachable. Operand 156 states. [2018-06-22 11:06:46,595 INFO ]: Finished removeUnreachable. Reduced from 156 states to 156 states and 193 transitions. [2018-06-22 11:06:46,596 INFO ]: Start accepts. Automaton has 156 states and 193 transitions. Word has length 53 [2018-06-22 11:06:46,596 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:46,596 INFO ]: Abstraction has 156 states and 193 transitions. [2018-06-22 11:06:46,596 INFO ]: Interpolant automaton has 17 states. [2018-06-22 11:06:46,596 INFO ]: Start isEmpty. Operand 156 states and 193 transitions. [2018-06-22 11:06:46,597 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-22 11:06:46,597 INFO ]: Found error trace [2018-06-22 11:06:46,597 INFO ]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:46,597 INFO ]: === Iteration 32 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:46,597 INFO ]: Analyzing trace with hash -1877699260, now seen corresponding path program 9 times [2018-06-22 11:06:46,597 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:46,597 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:46,598 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:46,598 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:46,598 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:46,608 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:46,850 INFO ]: Checked inductivity of 57 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:06:46,850 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:46,851 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:46,859 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:06:46,903 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 11:06:46,903 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:46,905 INFO ]: Computing forward predicates... [2018-06-22 11:06:46,940 INFO ]: Checked inductivity of 57 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 11:06:46,973 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:46,973 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2018-06-22 11:06:46,973 INFO ]: Interpolant automaton has 18 states [2018-06-22 11:06:46,973 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 11:06:46,973 INFO ]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:06:46,974 INFO ]: Start difference. First operand 156 states and 193 transitions. Second operand 18 states. [2018-06-22 11:06:47,177 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:47,177 INFO ]: Finished difference Result 170 states and 207 transitions. [2018-06-22 11:06:47,178 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:06:47,178 INFO ]: Start accepts. Automaton has 18 states. Word has length 53 [2018-06-22 11:06:47,178 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:47,178 INFO ]: With dead ends: 170 [2018-06-22 11:06:47,178 INFO ]: Without dead ends: 170 [2018-06-22 11:06:47,179 INFO ]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2018-06-22 11:06:47,179 INFO ]: Start minimizeSevpa. Operand 170 states. [2018-06-22 11:06:47,185 INFO ]: Finished minimizeSevpa. Reduced states from 170 to 160. [2018-06-22 11:06:47,185 INFO ]: Start removeUnreachable. Operand 160 states. [2018-06-22 11:06:47,187 INFO ]: Finished removeUnreachable. Reduced from 160 states to 160 states and 197 transitions. [2018-06-22 11:06:47,187 INFO ]: Start accepts. Automaton has 160 states and 197 transitions. Word has length 53 [2018-06-22 11:06:47,187 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:47,187 INFO ]: Abstraction has 160 states and 197 transitions. [2018-06-22 11:06:47,187 INFO ]: Interpolant automaton has 18 states. [2018-06-22 11:06:47,187 INFO ]: Start isEmpty. Operand 160 states and 197 transitions. [2018-06-22 11:06:47,188 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-22 11:06:47,188 INFO ]: Found error trace [2018-06-22 11:06:47,188 INFO ]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:47,188 INFO ]: === Iteration 33 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:47,188 INFO ]: Analyzing trace with hash -983576148, now seen corresponding path program 7 times [2018-06-22 11:06:47,188 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:47,188 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:47,189 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:47,189 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:47,189 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:47,200 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:47,420 INFO ]: Checked inductivity of 42 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-06-22 11:06:47,420 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:47,420 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:47,426 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:47,456 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:47,459 INFO ]: Computing forward predicates... [2018-06-22 11:06:47,799 INFO ]: Checked inductivity of 42 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-06-22 11:06:47,819 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:47,819 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2018-06-22 11:06:47,819 INFO ]: Interpolant automaton has 29 states [2018-06-22 11:06:47,819 INFO ]: Constructing interpolant automaton starting with 29 interpolants. [2018-06-22 11:06:47,820 INFO ]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:06:47,820 INFO ]: Start difference. First operand 160 states and 197 transitions. Second operand 29 states. [2018-06-22 11:06:48,336 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:48,336 INFO ]: Finished difference Result 180 states and 218 transitions. [2018-06-22 11:06:48,337 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 11:06:48,337 INFO ]: Start accepts. Automaton has 29 states. Word has length 53 [2018-06-22 11:06:48,337 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:48,338 INFO ]: With dead ends: 180 [2018-06-22 11:06:48,338 INFO ]: Without dead ends: 178 [2018-06-22 11:06:48,338 INFO ]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 11:06:48,339 INFO ]: Start minimizeSevpa. Operand 178 states. [2018-06-22 11:06:48,345 INFO ]: Finished minimizeSevpa. Reduced states from 178 to 162. [2018-06-22 11:06:48,345 INFO ]: Start removeUnreachable. Operand 162 states. [2018-06-22 11:06:48,346 INFO ]: Finished removeUnreachable. Reduced from 162 states to 162 states and 200 transitions. [2018-06-22 11:06:48,346 INFO ]: Start accepts. Automaton has 162 states and 200 transitions. Word has length 53 [2018-06-22 11:06:48,346 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:48,346 INFO ]: Abstraction has 162 states and 200 transitions. [2018-06-22 11:06:48,346 INFO ]: Interpolant automaton has 29 states. [2018-06-22 11:06:48,346 INFO ]: Start isEmpty. Operand 162 states and 200 transitions. [2018-06-22 11:06:48,347 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-22 11:06:48,347 INFO ]: Found error trace [2018-06-22 11:06:48,347 INFO ]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:48,347 INFO ]: === Iteration 34 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:48,347 INFO ]: Analyzing trace with hash -260288178, now seen corresponding path program 2 times [2018-06-22 11:06:48,348 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:48,348 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:48,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:48,348 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:48,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:48,362 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:48,797 INFO ]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:06:48,797 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:48,797 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:48,804 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:06:48,861 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:06:48,861 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:48,865 INFO ]: Computing forward predicates... [2018-06-22 11:06:49,214 INFO ]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:06:49,240 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:49,240 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 31 [2018-06-22 11:06:49,240 INFO ]: Interpolant automaton has 31 states [2018-06-22 11:06:49,240 INFO ]: Constructing interpolant automaton starting with 31 interpolants. [2018-06-22 11:06:49,240 INFO ]: CoverageRelationStatistics Valid=71, Invalid=859, Unknown=0, NotChecked=0, Total=930 [2018-06-22 11:06:49,240 INFO ]: Start difference. First operand 162 states and 200 transitions. Second operand 31 states. [2018-06-22 11:06:50,019 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:50,019 INFO ]: Finished difference Result 184 states and 221 transitions. [2018-06-22 11:06:50,019 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 11:06:50,019 INFO ]: Start accepts. Automaton has 31 states. Word has length 53 [2018-06-22 11:06:50,019 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:50,020 INFO ]: With dead ends: 184 [2018-06-22 11:06:50,020 INFO ]: Without dead ends: 172 [2018-06-22 11:06:50,020 INFO ]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2018-06-22 11:06:50,020 INFO ]: Start minimizeSevpa. Operand 172 states. [2018-06-22 11:06:50,027 INFO ]: Finished minimizeSevpa. Reduced states from 172 to 162. [2018-06-22 11:06:50,027 INFO ]: Start removeUnreachable. Operand 162 states. [2018-06-22 11:06:50,028 INFO ]: Finished removeUnreachable. Reduced from 162 states to 162 states and 199 transitions. [2018-06-22 11:06:50,028 INFO ]: Start accepts. Automaton has 162 states and 199 transitions. Word has length 53 [2018-06-22 11:06:50,028 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:50,028 INFO ]: Abstraction has 162 states and 199 transitions. [2018-06-22 11:06:50,028 INFO ]: Interpolant automaton has 31 states. [2018-06-22 11:06:50,028 INFO ]: Start isEmpty. Operand 162 states and 199 transitions. [2018-06-22 11:06:50,029 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-22 11:06:50,029 INFO ]: Found error trace [2018-06-22 11:06:50,029 INFO ]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:50,029 INFO ]: === Iteration 35 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:50,029 INFO ]: Analyzing trace with hash -1948197136, now seen corresponding path program 3 times [2018-06-22 11:06:50,029 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:50,029 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:50,030 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:50,030 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:50,030 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:50,046 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:50,609 INFO ]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:06:50,609 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:50,609 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:50,616 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:06:50,645 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 11:06:50,645 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:50,648 INFO ]: Computing forward predicates... [2018-06-22 11:06:51,012 INFO ]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:06:51,031 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:51,031 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 31 [2018-06-22 11:06:51,031 INFO ]: Interpolant automaton has 31 states [2018-06-22 11:06:51,031 INFO ]: Constructing interpolant automaton starting with 31 interpolants. [2018-06-22 11:06:51,032 INFO ]: CoverageRelationStatistics Valid=71, Invalid=859, Unknown=0, NotChecked=0, Total=930 [2018-06-22 11:06:51,032 INFO ]: Start difference. First operand 162 states and 199 transitions. Second operand 31 states. [2018-06-22 11:06:51,420 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:51,420 INFO ]: Finished difference Result 178 states and 214 transitions. [2018-06-22 11:06:51,420 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 11:06:51,420 INFO ]: Start accepts. Automaton has 31 states. Word has length 53 [2018-06-22 11:06:51,420 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:51,421 INFO ]: With dead ends: 178 [2018-06-22 11:06:51,421 INFO ]: Without dead ends: 166 [2018-06-22 11:06:51,421 INFO ]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2018-06-22 11:06:51,421 INFO ]: Start minimizeSevpa. Operand 166 states. [2018-06-22 11:06:51,428 INFO ]: Finished minimizeSevpa. Reduced states from 166 to 156. [2018-06-22 11:06:51,428 INFO ]: Start removeUnreachable. Operand 156 states. [2018-06-22 11:06:51,428 INFO ]: Finished removeUnreachable. Reduced from 156 states to 156 states and 192 transitions. [2018-06-22 11:06:51,429 INFO ]: Start accepts. Automaton has 156 states and 192 transitions. Word has length 53 [2018-06-22 11:06:51,429 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:51,429 INFO ]: Abstraction has 156 states and 192 transitions. [2018-06-22 11:06:51,429 INFO ]: Interpolant automaton has 31 states. [2018-06-22 11:06:51,429 INFO ]: Start isEmpty. Operand 156 states and 192 transitions. [2018-06-22 11:06:51,430 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-22 11:06:51,430 INFO ]: Found error trace [2018-06-22 11:06:51,430 INFO ]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:51,430 INFO ]: === Iteration 36 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:51,431 INFO ]: Analyzing trace with hash 1447795346, now seen corresponding path program 7 times [2018-06-22 11:06:51,431 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:51,431 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:51,431 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:51,431 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:51,431 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:51,441 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:51,689 INFO ]: Checked inductivity of 42 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-06-22 11:06:51,689 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:51,689 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:51,695 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:51,734 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:51,737 INFO ]: Computing forward predicates... [2018-06-22 11:06:51,980 INFO ]: Checked inductivity of 42 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-06-22 11:06:52,001 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:52,001 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2018-06-22 11:06:52,001 INFO ]: Interpolant automaton has 29 states [2018-06-22 11:06:52,002 INFO ]: Constructing interpolant automaton starting with 29 interpolants. [2018-06-22 11:06:52,002 INFO ]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:06:52,002 INFO ]: Start difference. First operand 156 states and 192 transitions. Second operand 29 states. [2018-06-22 11:06:52,256 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:52,256 INFO ]: Finished difference Result 176 states and 214 transitions. [2018-06-22 11:06:52,256 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 11:06:52,256 INFO ]: Start accepts. Automaton has 29 states. Word has length 53 [2018-06-22 11:06:52,257 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:52,257 INFO ]: With dead ends: 176 [2018-06-22 11:06:52,257 INFO ]: Without dead ends: 172 [2018-06-22 11:06:52,258 INFO ]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 11:06:52,258 INFO ]: Start minimizeSevpa. Operand 172 states. [2018-06-22 11:06:52,263 INFO ]: Finished minimizeSevpa. Reduced states from 172 to 162. [2018-06-22 11:06:52,263 INFO ]: Start removeUnreachable. Operand 162 states. [2018-06-22 11:06:52,263 INFO ]: Finished removeUnreachable. Reduced from 162 states to 162 states and 200 transitions. [2018-06-22 11:06:52,263 INFO ]: Start accepts. Automaton has 162 states and 200 transitions. Word has length 53 [2018-06-22 11:06:52,264 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:52,264 INFO ]: Abstraction has 162 states and 200 transitions. [2018-06-22 11:06:52,264 INFO ]: Interpolant automaton has 29 states. [2018-06-22 11:06:52,264 INFO ]: Start isEmpty. Operand 162 states and 200 transitions. [2018-06-22 11:06:52,265 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 11:06:52,265 INFO ]: Found error trace [2018-06-22 11:06:52,265 INFO ]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:52,265 INFO ]: === Iteration 37 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:52,265 INFO ]: Analyzing trace with hash 1258268265, now seen corresponding path program 10 times [2018-06-22 11:06:52,265 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:52,265 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:52,265 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:52,266 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:52,266 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:52,275 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:52,524 INFO ]: Checked inductivity of 72 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-06-22 11:06:52,524 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:52,524 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:52,529 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:06:52,560 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:06:52,560 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:52,563 INFO ]: Computing forward predicates... [2018-06-22 11:06:52,945 INFO ]: Checked inductivity of 72 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-06-22 11:06:52,964 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:52,964 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 31 [2018-06-22 11:06:52,964 INFO ]: Interpolant automaton has 31 states [2018-06-22 11:06:52,964 INFO ]: Constructing interpolant automaton starting with 31 interpolants. [2018-06-22 11:06:52,964 INFO ]: CoverageRelationStatistics Valid=72, Invalid=858, Unknown=0, NotChecked=0, Total=930 [2018-06-22 11:06:52,964 INFO ]: Start difference. First operand 162 states and 200 transitions. Second operand 31 states. [2018-06-22 11:06:53,285 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:53,285 INFO ]: Finished difference Result 188 states and 230 transitions. [2018-06-22 11:06:53,285 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-22 11:06:53,285 INFO ]: Start accepts. Automaton has 31 states. Word has length 57 [2018-06-22 11:06:53,285 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:53,286 INFO ]: With dead ends: 188 [2018-06-22 11:06:53,286 INFO ]: Without dead ends: 186 [2018-06-22 11:06:53,287 INFO ]: 0 DeclaredPredicates, 88 GetRequests, 41 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=1370, Unknown=0, NotChecked=0, Total=1482 [2018-06-22 11:06:53,287 INFO ]: Start minimizeSevpa. Operand 186 states. [2018-06-22 11:06:53,293 INFO ]: Finished minimizeSevpa. Reduced states from 186 to 172. [2018-06-22 11:06:53,293 INFO ]: Start removeUnreachable. Operand 172 states. [2018-06-22 11:06:53,293 INFO ]: Finished removeUnreachable. Reduced from 172 states to 172 states and 214 transitions. [2018-06-22 11:06:53,293 INFO ]: Start accepts. Automaton has 172 states and 214 transitions. Word has length 57 [2018-06-22 11:06:53,293 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:53,293 INFO ]: Abstraction has 172 states and 214 transitions. [2018-06-22 11:06:53,293 INFO ]: Interpolant automaton has 31 states. [2018-06-22 11:06:53,293 INFO ]: Start isEmpty. Operand 172 states and 214 transitions. [2018-06-22 11:06:53,294 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 11:06:53,294 INFO ]: Found error trace [2018-06-22 11:06:53,294 INFO ]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:53,295 INFO ]: === Iteration 38 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:53,295 INFO ]: Analyzing trace with hash 1517119697, now seen corresponding path program 8 times [2018-06-22 11:06:53,295 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:53,295 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:53,295 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:53,295 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:53,295 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:53,306 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:53,501 INFO ]: Checked inductivity of 57 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:06:53,501 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:53,501 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:53,508 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:06:53,541 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:06:53,541 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:53,543 INFO ]: Computing forward predicates... [2018-06-22 11:06:53,597 INFO ]: Checked inductivity of 57 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 11:06:53,616 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:53,616 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2018-06-22 11:06:53,616 INFO ]: Interpolant automaton has 18 states [2018-06-22 11:06:53,616 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 11:06:53,616 INFO ]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:06:53,616 INFO ]: Start difference. First operand 172 states and 214 transitions. Second operand 18 states. [2018-06-22 11:06:53,837 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:53,837 INFO ]: Finished difference Result 220 states and 265 transitions. [2018-06-22 11:06:53,837 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:06:53,837 INFO ]: Start accepts. Automaton has 18 states. Word has length 57 [2018-06-22 11:06:53,837 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:53,838 INFO ]: With dead ends: 220 [2018-06-22 11:06:53,838 INFO ]: Without dead ends: 210 [2018-06-22 11:06:53,838 INFO ]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2018-06-22 11:06:53,838 INFO ]: Start minimizeSevpa. Operand 210 states. [2018-06-22 11:06:53,845 INFO ]: Finished minimizeSevpa. Reduced states from 210 to 194. [2018-06-22 11:06:53,845 INFO ]: Start removeUnreachable. Operand 194 states. [2018-06-22 11:06:53,846 INFO ]: Finished removeUnreachable. Reduced from 194 states to 194 states and 239 transitions. [2018-06-22 11:06:53,846 INFO ]: Start accepts. Automaton has 194 states and 239 transitions. Word has length 57 [2018-06-22 11:06:53,847 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:53,847 INFO ]: Abstraction has 194 states and 239 transitions. [2018-06-22 11:06:53,847 INFO ]: Interpolant automaton has 18 states. [2018-06-22 11:06:53,847 INFO ]: Start isEmpty. Operand 194 states and 239 transitions. [2018-06-22 11:06:53,848 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 11:06:53,848 INFO ]: Found error trace [2018-06-22 11:06:53,848 INFO ]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:53,848 INFO ]: === Iteration 39 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:53,848 INFO ]: Analyzing trace with hash 1750066097, now seen corresponding path program 9 times [2018-06-22 11:06:53,848 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:53,848 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:53,848 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:53,848 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:53,849 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:53,856 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:54,059 INFO ]: Checked inductivity of 57 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:06:54,059 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:54,059 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:54,064 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:06:54,098 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 11:06:54,098 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:54,101 INFO ]: Computing forward predicates... [2018-06-22 11:06:54,178 INFO ]: Checked inductivity of 57 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 11:06:54,213 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:54,213 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2018-06-22 11:06:54,213 INFO ]: Interpolant automaton has 19 states [2018-06-22 11:06:54,213 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 11:06:54,213 INFO ]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:06:54,213 INFO ]: Start difference. First operand 194 states and 239 transitions. Second operand 19 states. [2018-06-22 11:06:55,414 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:55,414 INFO ]: Finished difference Result 216 states and 261 transitions. [2018-06-22 11:06:55,415 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 11:06:55,415 INFO ]: Start accepts. Automaton has 19 states. Word has length 57 [2018-06-22 11:06:55,415 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:55,416 INFO ]: With dead ends: 216 [2018-06-22 11:06:55,416 INFO ]: Without dead ends: 216 [2018-06-22 11:06:55,416 INFO ]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2018-06-22 11:06:55,417 INFO ]: Start minimizeSevpa. Operand 216 states. [2018-06-22 11:06:55,425 INFO ]: Finished minimizeSevpa. Reduced states from 216 to 192. [2018-06-22 11:06:55,425 INFO ]: Start removeUnreachable. Operand 192 states. [2018-06-22 11:06:55,426 INFO ]: Finished removeUnreachable. Reduced from 192 states to 192 states and 237 transitions. [2018-06-22 11:06:55,426 INFO ]: Start accepts. Automaton has 192 states and 237 transitions. Word has length 57 [2018-06-22 11:06:55,426 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:55,426 INFO ]: Abstraction has 192 states and 237 transitions. [2018-06-22 11:06:55,426 INFO ]: Interpolant automaton has 19 states. [2018-06-22 11:06:55,426 INFO ]: Start isEmpty. Operand 192 states and 237 transitions. [2018-06-22 11:06:55,427 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 11:06:55,427 INFO ]: Found error trace [2018-06-22 11:06:55,427 INFO ]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:55,427 INFO ]: === Iteration 40 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:55,427 INFO ]: Analyzing trace with hash -1907650028, now seen corresponding path program 8 times [2018-06-22 11:06:55,427 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:55,427 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:55,428 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:55,428 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:55,428 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:55,434 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:55,616 INFO ]: Checked inductivity of 57 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:06:55,616 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:55,616 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:55,623 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:06:55,653 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:06:55,654 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:55,656 INFO ]: Computing forward predicates... [2018-06-22 11:06:55,676 INFO ]: Checked inductivity of 57 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 11:06:55,695 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:55,695 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2018-06-22 11:06:55,695 INFO ]: Interpolant automaton has 18 states [2018-06-22 11:06:55,695 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 11:06:55,695 INFO ]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:06:55,695 INFO ]: Start difference. First operand 192 states and 237 transitions. Second operand 18 states. [2018-06-22 11:06:55,930 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:55,930 INFO ]: Finished difference Result 246 states and 295 transitions. [2018-06-22 11:06:55,934 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:06:55,934 INFO ]: Start accepts. Automaton has 18 states. Word has length 57 [2018-06-22 11:06:55,934 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:55,935 INFO ]: With dead ends: 246 [2018-06-22 11:06:55,935 INFO ]: Without dead ends: 246 [2018-06-22 11:06:55,936 INFO ]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2018-06-22 11:06:55,936 INFO ]: Start minimizeSevpa. Operand 246 states. [2018-06-22 11:06:55,942 INFO ]: Finished minimizeSevpa. Reduced states from 246 to 208. [2018-06-22 11:06:55,942 INFO ]: Start removeUnreachable. Operand 208 states. [2018-06-22 11:06:55,943 INFO ]: Finished removeUnreachable. Reduced from 208 states to 208 states and 257 transitions. [2018-06-22 11:06:55,944 INFO ]: Start accepts. Automaton has 208 states and 257 transitions. Word has length 57 [2018-06-22 11:06:55,944 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:55,944 INFO ]: Abstraction has 208 states and 257 transitions. [2018-06-22 11:06:55,944 INFO ]: Interpolant automaton has 18 states. [2018-06-22 11:06:55,944 INFO ]: Start isEmpty. Operand 208 states and 257 transitions. [2018-06-22 11:06:55,945 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 11:06:55,945 INFO ]: Found error trace [2018-06-22 11:06:55,945 INFO ]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:55,945 INFO ]: === Iteration 41 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:55,945 INFO ]: Analyzing trace with hash -313851492, now seen corresponding path program 9 times [2018-06-22 11:06:55,945 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:55,945 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:55,945 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:55,945 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:55,945 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:55,954 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:56,914 INFO ]: Checked inductivity of 57 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:06:56,915 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:56,915 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:56,921 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:06:56,958 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 11:06:56,958 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:56,961 INFO ]: Computing forward predicates... [2018-06-22 11:06:57,018 INFO ]: Checked inductivity of 57 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 11:06:57,050 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:57,051 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 17 [2018-06-22 11:06:57,051 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:06:57,051 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:06:57,051 INFO ]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:06:57,051 INFO ]: Start difference. First operand 208 states and 257 transitions. Second operand 17 states. [2018-06-22 11:06:57,465 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:57,465 INFO ]: Finished difference Result 260 states and 308 transitions. [2018-06-22 11:06:57,465 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 11:06:57,465 INFO ]: Start accepts. Automaton has 17 states. Word has length 57 [2018-06-22 11:06:57,465 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:57,466 INFO ]: With dead ends: 260 [2018-06-22 11:06:57,466 INFO ]: Without dead ends: 252 [2018-06-22 11:06:57,466 INFO ]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2018-06-22 11:06:57,466 INFO ]: Start minimizeSevpa. Operand 252 states. [2018-06-22 11:06:57,474 INFO ]: Finished minimizeSevpa. Reduced states from 252 to 222. [2018-06-22 11:06:57,474 INFO ]: Start removeUnreachable. Operand 222 states. [2018-06-22 11:06:57,475 INFO ]: Finished removeUnreachable. Reduced from 222 states to 222 states and 270 transitions. [2018-06-22 11:06:57,476 INFO ]: Start accepts. Automaton has 222 states and 270 transitions. Word has length 57 [2018-06-22 11:06:57,476 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:57,476 INFO ]: Abstraction has 222 states and 270 transitions. [2018-06-22 11:06:57,476 INFO ]: Interpolant automaton has 17 states. [2018-06-22 11:06:57,476 INFO ]: Start isEmpty. Operand 222 states and 270 transitions. [2018-06-22 11:06:57,477 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:06:57,477 INFO ]: Found error trace [2018-06-22 11:06:57,477 INFO ]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:57,477 INFO ]: === Iteration 42 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:57,477 INFO ]: Analyzing trace with hash 637835822, now seen corresponding path program 11 times [2018-06-22 11:06:57,477 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:57,477 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:57,478 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:57,478 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:57,478 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:57,487 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:57,822 INFO ]: Checked inductivity of 91 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 11:06:57,822 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:57,822 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:57,831 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:06:57,878 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 11:06:57,878 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:57,881 INFO ]: Computing forward predicates... [2018-06-22 11:06:58,284 INFO ]: Checked inductivity of 91 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-06-22 11:06:58,315 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:58,315 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2018-06-22 11:06:58,316 INFO ]: Interpolant automaton has 20 states [2018-06-22 11:06:58,316 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 11:06:58,316 INFO ]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:06:58,316 INFO ]: Start difference. First operand 222 states and 270 transitions. Second operand 20 states. [2018-06-22 11:06:59,358 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:59,358 INFO ]: Finished difference Result 242 states and 290 transitions. [2018-06-22 11:06:59,359 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 11:06:59,359 INFO ]: Start accepts. Automaton has 20 states. Word has length 61 [2018-06-22 11:06:59,359 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:59,359 INFO ]: With dead ends: 242 [2018-06-22 11:06:59,359 INFO ]: Without dead ends: 242 [2018-06-22 11:06:59,360 INFO ]: 0 DeclaredPredicates, 94 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2018-06-22 11:06:59,360 INFO ]: Start minimizeSevpa. Operand 242 states. [2018-06-22 11:06:59,368 INFO ]: Finished minimizeSevpa. Reduced states from 242 to 216. [2018-06-22 11:06:59,368 INFO ]: Start removeUnreachable. Operand 216 states. [2018-06-22 11:06:59,369 INFO ]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2018-06-22 11:06:59,369 INFO ]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 61 [2018-06-22 11:06:59,369 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:59,369 INFO ]: Abstraction has 216 states and 260 transitions. [2018-06-22 11:06:59,369 INFO ]: Interpolant automaton has 20 states. [2018-06-22 11:06:59,369 INFO ]: Start isEmpty. Operand 216 states and 260 transitions. [2018-06-22 11:06:59,370 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:06:59,370 INFO ]: Found error trace [2018-06-22 11:06:59,370 INFO ]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:59,370 INFO ]: === Iteration 43 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:59,370 INFO ]: Analyzing trace with hash 114644814, now seen corresponding path program 12 times [2018-06-22 11:06:59,370 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:59,370 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:59,371 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:59,371 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:06:59,371 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:59,379 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:59,709 INFO ]: Checked inductivity of 91 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 11:06:59,709 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:06:59,709 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:06:59,715 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 11:06:59,755 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-06-22 11:06:59,755 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:59,757 INFO ]: Computing forward predicates... [2018-06-22 11:06:59,783 INFO ]: Checked inductivity of 91 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-06-22 11:06:59,804 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:06:59,804 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2018-06-22 11:06:59,804 INFO ]: Interpolant automaton has 19 states [2018-06-22 11:06:59,804 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 11:06:59,804 INFO ]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:06:59,804 INFO ]: Start difference. First operand 216 states and 260 transitions. Second operand 19 states. [2018-06-22 11:06:59,992 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:59,992 INFO ]: Finished difference Result 242 states and 289 transitions. [2018-06-22 11:06:59,992 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 11:06:59,992 INFO ]: Start accepts. Automaton has 19 states. Word has length 61 [2018-06-22 11:06:59,992 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:59,993 INFO ]: With dead ends: 242 [2018-06-22 11:06:59,993 INFO ]: Without dead ends: 226 [2018-06-22 11:06:59,993 INFO ]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:06:59,993 INFO ]: Start minimizeSevpa. Operand 226 states. [2018-06-22 11:07:00,000 INFO ]: Finished minimizeSevpa. Reduced states from 226 to 218. [2018-06-22 11:07:00,000 INFO ]: Start removeUnreachable. Operand 218 states. [2018-06-22 11:07:00,001 INFO ]: Finished removeUnreachable. Reduced from 218 states to 218 states and 263 transitions. [2018-06-22 11:07:00,001 INFO ]: Start accepts. Automaton has 218 states and 263 transitions. Word has length 61 [2018-06-22 11:07:00,002 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:00,002 INFO ]: Abstraction has 218 states and 263 transitions. [2018-06-22 11:07:00,002 INFO ]: Interpolant automaton has 19 states. [2018-06-22 11:07:00,002 INFO ]: Start isEmpty. Operand 218 states and 263 transitions. [2018-06-22 11:07:00,002 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:07:00,002 INFO ]: Found error trace [2018-06-22 11:07:00,002 INFO ]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:00,003 INFO ]: === Iteration 44 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:00,003 INFO ]: Analyzing trace with hash 285958806, now seen corresponding path program 10 times [2018-06-22 11:07:00,003 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:00,003 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:00,003 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:00,003 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:07:00,003 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:00,013 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:00,350 INFO ]: Checked inductivity of 72 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-06-22 11:07:00,350 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:00,350 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:00,357 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:07:00,395 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:07:00,396 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:00,399 INFO ]: Computing forward predicates... [2018-06-22 11:07:00,705 INFO ]: Checked inductivity of 72 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-06-22 11:07:00,727 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:00,727 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 33 [2018-06-22 11:07:00,727 INFO ]: Interpolant automaton has 33 states [2018-06-22 11:07:00,727 INFO ]: Constructing interpolant automaton starting with 33 interpolants. [2018-06-22 11:07:00,727 INFO ]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 11:07:00,728 INFO ]: Start difference. First operand 218 states and 263 transitions. Second operand 33 states. [2018-06-22 11:07:01,404 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:01,405 INFO ]: Finished difference Result 242 states and 288 transitions. [2018-06-22 11:07:01,406 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 11:07:01,407 INFO ]: Start accepts. Automaton has 33 states. Word has length 61 [2018-06-22 11:07:01,407 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:01,407 INFO ]: With dead ends: 242 [2018-06-22 11:07:01,407 INFO ]: Without dead ends: 240 [2018-06-22 11:07:01,408 INFO ]: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2018-06-22 11:07:01,408 INFO ]: Start minimizeSevpa. Operand 240 states. [2018-06-22 11:07:01,414 INFO ]: Finished minimizeSevpa. Reduced states from 240 to 220. [2018-06-22 11:07:01,414 INFO ]: Start removeUnreachable. Operand 220 states. [2018-06-22 11:07:01,415 INFO ]: Finished removeUnreachable. Reduced from 220 states to 220 states and 266 transitions. [2018-06-22 11:07:01,415 INFO ]: Start accepts. Automaton has 220 states and 266 transitions. Word has length 61 [2018-06-22 11:07:01,416 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:01,416 INFO ]: Abstraction has 220 states and 266 transitions. [2018-06-22 11:07:01,416 INFO ]: Interpolant automaton has 33 states. [2018-06-22 11:07:01,416 INFO ]: Start isEmpty. Operand 220 states and 266 transitions. [2018-06-22 11:07:01,417 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:07:01,417 INFO ]: Found error trace [2018-06-22 11:07:01,417 INFO ]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:01,417 INFO ]: === Iteration 45 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:01,417 INFO ]: Analyzing trace with hash 57274616, now seen corresponding path program 4 times [2018-06-22 11:07:01,417 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:01,417 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:01,417 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:01,417 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:07:01,417 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:01,440 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:02,088 INFO ]: Checked inductivity of 48 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:07:02,088 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:02,088 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:02,096 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:07:02,128 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:07:02,128 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:02,132 INFO ]: Computing forward predicates... [2018-06-22 11:07:02,783 INFO ]: Checked inductivity of 48 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:07:02,802 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:02,803 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 35 [2018-06-22 11:07:02,803 INFO ]: Interpolant automaton has 35 states [2018-06-22 11:07:02,803 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-22 11:07:02,804 INFO ]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 11:07:02,804 INFO ]: Start difference. First operand 220 states and 266 transitions. Second operand 35 states. [2018-06-22 11:07:03,594 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:03,594 INFO ]: Finished difference Result 252 states and 297 transitions. [2018-06-22 11:07:03,594 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 11:07:03,594 INFO ]: Start accepts. Automaton has 35 states. Word has length 61 [2018-06-22 11:07:03,595 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:03,595 INFO ]: With dead ends: 252 [2018-06-22 11:07:03,595 INFO ]: Without dead ends: 238 [2018-06-22 11:07:03,596 INFO ]: 0 DeclaredPredicates, 93 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=121, Invalid=1685, Unknown=0, NotChecked=0, Total=1806 [2018-06-22 11:07:03,596 INFO ]: Start minimizeSevpa. Operand 238 states. [2018-06-22 11:07:03,604 INFO ]: Finished minimizeSevpa. Reduced states from 238 to 220. [2018-06-22 11:07:03,604 INFO ]: Start removeUnreachable. Operand 220 states. [2018-06-22 11:07:03,605 INFO ]: Finished removeUnreachable. Reduced from 220 states to 220 states and 265 transitions. [2018-06-22 11:07:03,605 INFO ]: Start accepts. Automaton has 220 states and 265 transitions. Word has length 61 [2018-06-22 11:07:03,605 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:03,605 INFO ]: Abstraction has 220 states and 265 transitions. [2018-06-22 11:07:03,605 INFO ]: Interpolant automaton has 35 states. [2018-06-22 11:07:03,605 INFO ]: Start isEmpty. Operand 220 states and 265 transitions. [2018-06-22 11:07:03,607 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:07:03,607 INFO ]: Found error trace [2018-06-22 11:07:03,607 INFO ]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:03,607 INFO ]: === Iteration 46 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:03,607 INFO ]: Analyzing trace with hash 637394266, now seen corresponding path program 5 times [2018-06-22 11:07:03,607 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:03,607 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:03,608 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:03,608 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:07:03,608 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:03,620 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:04,627 INFO ]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 11:07:04,628 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:04,628 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:04,633 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:07:04,673 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2018-06-22 11:07:04,673 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:04,676 INFO ]: Computing forward predicates... [2018-06-22 11:07:05,078 INFO ]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 11:07:05,098 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:05,152 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 35 [2018-06-22 11:07:05,152 INFO ]: Interpolant automaton has 35 states [2018-06-22 11:07:05,152 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-22 11:07:05,152 INFO ]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 11:07:05,152 INFO ]: Start difference. First operand 220 states and 265 transitions. Second operand 35 states. [2018-06-22 11:07:05,881 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:05,881 INFO ]: Finished difference Result 250 states and 294 transitions. [2018-06-22 11:07:05,881 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 11:07:05,881 INFO ]: Start accepts. Automaton has 35 states. Word has length 61 [2018-06-22 11:07:05,881 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:05,882 INFO ]: With dead ends: 250 [2018-06-22 11:07:05,882 INFO ]: Without dead ends: 236 [2018-06-22 11:07:05,882 INFO ]: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=121, Invalid=1685, Unknown=0, NotChecked=0, Total=1806 [2018-06-22 11:07:05,882 INFO ]: Start minimizeSevpa. Operand 236 states. [2018-06-22 11:07:05,889 INFO ]: Finished minimizeSevpa. Reduced states from 236 to 220. [2018-06-22 11:07:05,889 INFO ]: Start removeUnreachable. Operand 220 states. [2018-06-22 11:07:05,890 INFO ]: Finished removeUnreachable. Reduced from 220 states to 220 states and 264 transitions. [2018-06-22 11:07:05,890 INFO ]: Start accepts. Automaton has 220 states and 264 transitions. Word has length 61 [2018-06-22 11:07:05,891 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:05,891 INFO ]: Abstraction has 220 states and 264 transitions. [2018-06-22 11:07:05,891 INFO ]: Interpolant automaton has 35 states. [2018-06-22 11:07:05,891 INFO ]: Start isEmpty. Operand 220 states and 264 transitions. [2018-06-22 11:07:05,891 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:07:05,891 INFO ]: Found error trace [2018-06-22 11:07:05,891 INFO ]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:05,891 INFO ]: === Iteration 47 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:05,892 INFO ]: Analyzing trace with hash -2031007812, now seen corresponding path program 6 times [2018-06-22 11:07:05,892 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:05,892 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:05,892 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:05,892 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:07:05,892 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:05,901 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:06,736 INFO ]: Checked inductivity of 48 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:07:06,736 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:06,736 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:06,742 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 11:07:06,777 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-06-22 11:07:06,777 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:06,779 INFO ]: Computing forward predicates... [2018-06-22 11:07:07,191 INFO ]: Checked inductivity of 48 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:07:07,213 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:07,213 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 35 [2018-06-22 11:07:07,214 INFO ]: Interpolant automaton has 35 states [2018-06-22 11:07:07,214 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-22 11:07:07,214 INFO ]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 11:07:07,214 INFO ]: Start difference. First operand 220 states and 264 transitions. Second operand 35 states. [2018-06-22 11:07:07,941 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:07,941 INFO ]: Finished difference Result 242 states and 285 transitions. [2018-06-22 11:07:07,941 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 11:07:07,941 INFO ]: Start accepts. Automaton has 35 states. Word has length 61 [2018-06-22 11:07:07,941 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:07,942 INFO ]: With dead ends: 242 [2018-06-22 11:07:07,942 INFO ]: Without dead ends: 228 [2018-06-22 11:07:07,942 INFO ]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=121, Invalid=1685, Unknown=0, NotChecked=0, Total=1806 [2018-06-22 11:07:07,942 INFO ]: Start minimizeSevpa. Operand 228 states. [2018-06-22 11:07:07,947 INFO ]: Finished minimizeSevpa. Reduced states from 228 to 212. [2018-06-22 11:07:07,947 INFO ]: Start removeUnreachable. Operand 212 states. [2018-06-22 11:07:07,948 INFO ]: Finished removeUnreachable. Reduced from 212 states to 212 states and 255 transitions. [2018-06-22 11:07:07,948 INFO ]: Start accepts. Automaton has 212 states and 255 transitions. Word has length 61 [2018-06-22 11:07:07,948 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:07,948 INFO ]: Abstraction has 212 states and 255 transitions. [2018-06-22 11:07:07,948 INFO ]: Interpolant automaton has 35 states. [2018-06-22 11:07:07,948 INFO ]: Start isEmpty. Operand 212 states and 255 transitions. [2018-06-22 11:07:07,949 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:07:07,949 INFO ]: Found error trace [2018-06-22 11:07:07,949 INFO ]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:07,949 INFO ]: === Iteration 48 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:07,949 INFO ]: Analyzing trace with hash -2008133602, now seen corresponding path program 10 times [2018-06-22 11:07:07,949 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:07,949 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:07,950 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:07,950 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:07:07,950 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:07,959 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:08,520 INFO ]: Checked inductivity of 72 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-06-22 11:07:08,520 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:08,520 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:08,527 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:07:08,561 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:07:08,561 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:08,564 INFO ]: Computing forward predicates... [2018-06-22 11:07:08,893 INFO ]: Checked inductivity of 72 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-06-22 11:07:08,916 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:08,916 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 33 [2018-06-22 11:07:08,916 INFO ]: Interpolant automaton has 33 states [2018-06-22 11:07:08,916 INFO ]: Constructing interpolant automaton starting with 33 interpolants. [2018-06-22 11:07:08,916 INFO ]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 11:07:08,916 INFO ]: Start difference. First operand 212 states and 255 transitions. Second operand 33 states. [2018-06-22 11:07:09,458 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:09,459 INFO ]: Finished difference Result 238 states and 283 transitions. [2018-06-22 11:07:09,459 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 11:07:09,459 INFO ]: Start accepts. Automaton has 33 states. Word has length 61 [2018-06-22 11:07:09,459 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:09,460 INFO ]: With dead ends: 238 [2018-06-22 11:07:09,460 INFO ]: Without dead ends: 234 [2018-06-22 11:07:09,460 INFO ]: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 14 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2018-06-22 11:07:09,460 INFO ]: Start minimizeSevpa. Operand 234 states. [2018-06-22 11:07:09,467 INFO ]: Finished minimizeSevpa. Reduced states from 234 to 218. [2018-06-22 11:07:09,467 INFO ]: Start removeUnreachable. Operand 218 states. [2018-06-22 11:07:09,468 INFO ]: Finished removeUnreachable. Reduced from 218 states to 218 states and 263 transitions. [2018-06-22 11:07:09,468 INFO ]: Start accepts. Automaton has 218 states and 263 transitions. Word has length 61 [2018-06-22 11:07:09,468 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:09,468 INFO ]: Abstraction has 218 states and 263 transitions. [2018-06-22 11:07:09,468 INFO ]: Interpolant automaton has 33 states. [2018-06-22 11:07:09,468 INFO ]: Start isEmpty. Operand 218 states and 263 transitions. [2018-06-22 11:07:09,469 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-22 11:07:09,469 INFO ]: Found error trace [2018-06-22 11:07:09,469 INFO ]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:09,469 INFO ]: === Iteration 49 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:09,469 INFO ]: Analyzing trace with hash 748962515, now seen corresponding path program 13 times [2018-06-22 11:07:09,469 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:09,469 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:09,470 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:09,470 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:07:09,470 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:09,479 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:09,903 INFO ]: Checked inductivity of 110 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-06-22 11:07:09,903 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:09,903 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:09,911 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:09,951 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:09,955 INFO ]: Computing forward predicates... [2018-06-22 11:07:10,582 INFO ]: Checked inductivity of 110 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-06-22 11:07:10,602 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:10,602 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 35 [2018-06-22 11:07:10,602 INFO ]: Interpolant automaton has 35 states [2018-06-22 11:07:10,602 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-22 11:07:10,602 INFO ]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 11:07:10,602 INFO ]: Start difference. First operand 218 states and 263 transitions. Second operand 35 states. [2018-06-22 11:07:10,962 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:10,962 INFO ]: Finished difference Result 248 states and 297 transitions. [2018-06-22 11:07:10,963 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-06-22 11:07:10,963 INFO ]: Start accepts. Automaton has 35 states. Word has length 65 [2018-06-22 11:07:10,963 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:10,963 INFO ]: With dead ends: 248 [2018-06-22 11:07:10,963 INFO ]: Without dead ends: 246 [2018-06-22 11:07:10,964 INFO ]: 0 DeclaredPredicates, 102 GetRequests, 46 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=132, Invalid=1848, Unknown=0, NotChecked=0, Total=1980 [2018-06-22 11:07:10,964 INFO ]: Start minimizeSevpa. Operand 246 states. [2018-06-22 11:07:10,969 INFO ]: Finished minimizeSevpa. Reduced states from 246 to 228. [2018-06-22 11:07:10,969 INFO ]: Start removeUnreachable. Operand 228 states. [2018-06-22 11:07:10,970 INFO ]: Finished removeUnreachable. Reduced from 228 states to 228 states and 277 transitions. [2018-06-22 11:07:10,970 INFO ]: Start accepts. Automaton has 228 states and 277 transitions. Word has length 65 [2018-06-22 11:07:10,970 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:10,970 INFO ]: Abstraction has 228 states and 277 transitions. [2018-06-22 11:07:10,970 INFO ]: Interpolant automaton has 35 states. [2018-06-22 11:07:10,970 INFO ]: Start isEmpty. Operand 228 states and 277 transitions. [2018-06-22 11:07:10,971 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-22 11:07:10,971 INFO ]: Found error trace [2018-06-22 11:07:10,971 INFO ]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:10,971 INFO ]: === Iteration 50 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:10,971 INFO ]: Analyzing trace with hash 1897566523, now seen corresponding path program 11 times [2018-06-22 11:07:10,971 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:10,971 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:10,972 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:10,972 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:10,972 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:10,978 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:11,246 INFO ]: Checked inductivity of 91 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 11:07:11,246 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:11,246 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:11,252 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:07:11,299 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 11:07:11,299 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:11,301 INFO ]: Computing forward predicates... [2018-06-22 11:07:11,328 INFO ]: Checked inductivity of 91 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-06-22 11:07:11,346 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:11,346 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2018-06-22 11:07:11,346 INFO ]: Interpolant automaton has 20 states [2018-06-22 11:07:11,347 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 11:07:11,347 INFO ]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:07:11,347 INFO ]: Start difference. First operand 228 states and 277 transitions. Second operand 20 states. [2018-06-22 11:07:11,606 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:11,606 INFO ]: Finished difference Result 292 states and 345 transitions. [2018-06-22 11:07:11,607 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 11:07:11,607 INFO ]: Start accepts. Automaton has 20 states. Word has length 65 [2018-06-22 11:07:11,607 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:11,608 INFO ]: With dead ends: 292 [2018-06-22 11:07:11,608 INFO ]: Without dead ends: 280 [2018-06-22 11:07:11,608 INFO ]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2018-06-22 11:07:11,608 INFO ]: Start minimizeSevpa. Operand 280 states. [2018-06-22 11:07:11,614 INFO ]: Finished minimizeSevpa. Reduced states from 280 to 256. [2018-06-22 11:07:11,614 INFO ]: Start removeUnreachable. Operand 256 states. [2018-06-22 11:07:11,616 INFO ]: Finished removeUnreachable. Reduced from 256 states to 256 states and 309 transitions. [2018-06-22 11:07:11,616 INFO ]: Start accepts. Automaton has 256 states and 309 transitions. Word has length 65 [2018-06-22 11:07:11,616 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:11,616 INFO ]: Abstraction has 256 states and 309 transitions. [2018-06-22 11:07:11,616 INFO ]: Interpolant automaton has 20 states. [2018-06-22 11:07:11,616 INFO ]: Start isEmpty. Operand 256 states and 309 transitions. [2018-06-22 11:07:11,617 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-22 11:07:11,617 INFO ]: Found error trace [2018-06-22 11:07:11,617 INFO ]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:11,617 INFO ]: === Iteration 51 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:11,617 INFO ]: Analyzing trace with hash 1445840283, now seen corresponding path program 12 times [2018-06-22 11:07:11,617 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:11,617 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:11,617 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:11,618 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:07:11,618 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:11,627 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:13,117 INFO ]: Checked inductivity of 91 backedges. 20 proven. 37 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 11:07:13,117 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:13,117 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 11:07:13,135 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:13,176 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-06-22 11:07:13,176 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:13,178 INFO ]: Computing forward predicates... [2018-06-22 11:07:13,208 INFO ]: Checked inductivity of 91 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-06-22 11:07:13,229 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:13,229 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2018-06-22 11:07:13,229 INFO ]: Interpolant automaton has 21 states [2018-06-22 11:07:13,229 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 11:07:13,230 INFO ]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:07:13,230 INFO ]: Start difference. First operand 256 states and 309 transitions. Second operand 21 states. [2018-06-22 11:07:13,496 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:13,496 INFO ]: Finished difference Result 284 states and 337 transitions. [2018-06-22 11:07:13,496 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-22 11:07:13,496 INFO ]: Start accepts. Automaton has 21 states. Word has length 65 [2018-06-22 11:07:13,496 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:13,497 INFO ]: With dead ends: 284 [2018-06-22 11:07:13,497 INFO ]: Without dead ends: 284 [2018-06-22 11:07:13,497 INFO ]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2018-06-22 11:07:13,497 INFO ]: Start minimizeSevpa. Operand 284 states. [2018-06-22 11:07:13,503 INFO ]: Finished minimizeSevpa. Reduced states from 284 to 254. [2018-06-22 11:07:13,503 INFO ]: Start removeUnreachable. Operand 254 states. [2018-06-22 11:07:13,504 INFO ]: Finished removeUnreachable. Reduced from 254 states to 254 states and 307 transitions. [2018-06-22 11:07:13,504 INFO ]: Start accepts. Automaton has 254 states and 307 transitions. Word has length 65 [2018-06-22 11:07:13,505 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:13,505 INFO ]: Abstraction has 254 states and 307 transitions. [2018-06-22 11:07:13,505 INFO ]: Interpolant automaton has 21 states. [2018-06-22 11:07:13,505 INFO ]: Start isEmpty. Operand 254 states and 307 transitions. [2018-06-22 11:07:13,506 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-22 11:07:13,506 INFO ]: Found error trace [2018-06-22 11:07:13,507 INFO ]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:13,507 INFO ]: === Iteration 52 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:13,507 INFO ]: Analyzing trace with hash -1013374168, now seen corresponding path program 11 times [2018-06-22 11:07:13,507 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:13,507 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:13,508 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:13,508 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:07:13,508 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:13,515 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:13,765 INFO ]: Checked inductivity of 91 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 11:07:13,765 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:13,765 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:13,771 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:07:13,808 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 11:07:13,808 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:13,810 INFO ]: Computing forward predicates... [2018-06-22 11:07:13,907 INFO ]: Checked inductivity of 91 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-06-22 11:07:13,926 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:13,927 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2018-06-22 11:07:13,927 INFO ]: Interpolant automaton has 19 states [2018-06-22 11:07:13,927 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 11:07:13,927 INFO ]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:07:13,927 INFO ]: Start difference. First operand 254 states and 307 transitions. Second operand 19 states. [2018-06-22 11:07:14,293 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:14,293 INFO ]: Finished difference Result 352 states and 409 transitions. [2018-06-22 11:07:14,294 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 11:07:14,294 INFO ]: Start accepts. Automaton has 19 states. Word has length 65 [2018-06-22 11:07:14,294 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:14,295 INFO ]: With dead ends: 352 [2018-06-22 11:07:14,295 INFO ]: Without dead ends: 342 [2018-06-22 11:07:14,295 INFO ]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:07:14,295 INFO ]: Start minimizeSevpa. Operand 342 states. [2018-06-22 11:07:14,303 INFO ]: Finished minimizeSevpa. Reduced states from 342 to 280. [2018-06-22 11:07:14,303 INFO ]: Start removeUnreachable. Operand 280 states. [2018-06-22 11:07:14,304 INFO ]: Finished removeUnreachable. Reduced from 280 states to 280 states and 337 transitions. [2018-06-22 11:07:14,304 INFO ]: Start accepts. Automaton has 280 states and 337 transitions. Word has length 65 [2018-06-22 11:07:14,304 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:14,304 INFO ]: Abstraction has 280 states and 337 transitions. [2018-06-22 11:07:14,304 INFO ]: Interpolant automaton has 19 states. [2018-06-22 11:07:14,304 INFO ]: Start isEmpty. Operand 280 states and 337 transitions. [2018-06-22 11:07:14,305 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-22 11:07:14,305 INFO ]: Found error trace [2018-06-22 11:07:14,305 INFO ]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:14,306 INFO ]: === Iteration 53 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:14,306 INFO ]: Analyzing trace with hash 700800928, now seen corresponding path program 12 times [2018-06-22 11:07:14,306 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:14,306 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:14,306 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:14,306 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:07:14,306 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:14,313 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:14,538 INFO ]: Checked inductivity of 91 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 11:07:14,538 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:14,538 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:14,543 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 11:07:14,583 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2018-06-22 11:07:14,583 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:14,586 INFO ]: Computing forward predicates... [2018-06-22 11:07:14,750 INFO ]: Checked inductivity of 91 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-06-22 11:07:14,769 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:14,769 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2018-06-22 11:07:14,769 INFO ]: Interpolant automaton has 20 states [2018-06-22 11:07:14,769 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 11:07:14,769 INFO ]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:07:14,769 INFO ]: Start difference. First operand 280 states and 337 transitions. Second operand 20 states. [2018-06-22 11:07:15,701 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:15,701 INFO ]: Finished difference Result 312 states and 369 transitions. [2018-06-22 11:07:15,702 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 11:07:15,702 INFO ]: Start accepts. Automaton has 20 states. Word has length 65 [2018-06-22 11:07:15,702 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:15,703 INFO ]: With dead ends: 312 [2018-06-22 11:07:15,703 INFO ]: Without dead ends: 312 [2018-06-22 11:07:15,703 INFO ]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2018-06-22 11:07:15,704 INFO ]: Start minimizeSevpa. Operand 312 states. [2018-06-22 11:07:15,711 INFO ]: Finished minimizeSevpa. Reduced states from 312 to 292. [2018-06-22 11:07:15,711 INFO ]: Start removeUnreachable. Operand 292 states. [2018-06-22 11:07:15,712 INFO ]: Finished removeUnreachable. Reduced from 292 states to 292 states and 349 transitions. [2018-06-22 11:07:15,712 INFO ]: Start accepts. Automaton has 292 states and 349 transitions. Word has length 65 [2018-06-22 11:07:15,712 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:15,712 INFO ]: Abstraction has 292 states and 349 transitions. [2018-06-22 11:07:15,712 INFO ]: Interpolant automaton has 20 states. [2018-06-22 11:07:15,713 INFO ]: Start isEmpty. Operand 292 states and 349 transitions. [2018-06-22 11:07:15,713 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 11:07:15,714 INFO ]: Found error trace [2018-06-22 11:07:15,714 INFO ]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:15,714 INFO ]: === Iteration 54 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:15,714 INFO ]: Analyzing trace with hash -935220424, now seen corresponding path program 14 times [2018-06-22 11:07:15,714 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:15,714 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:15,715 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:15,715 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:07:15,715 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:15,728 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:15,967 INFO ]: Checked inductivity of 133 backedges. 42 proven. 39 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-06-22 11:07:15,967 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:15,967 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:15,973 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:07:16,011 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:07:16,011 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:16,014 INFO ]: Computing forward predicates... [2018-06-22 11:07:16,057 INFO ]: Checked inductivity of 133 backedges. 42 proven. 35 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-06-22 11:07:16,076 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:16,076 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2018-06-22 11:07:16,076 INFO ]: Interpolant automaton has 21 states [2018-06-22 11:07:16,077 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 11:07:16,077 INFO ]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:07:16,077 INFO ]: Start difference. First operand 292 states and 349 transitions. Second operand 21 states. [2018-06-22 11:07:16,292 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:16,292 INFO ]: Finished difference Result 310 states and 366 transitions. [2018-06-22 11:07:16,292 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-22 11:07:16,292 INFO ]: Start accepts. Automaton has 21 states. Word has length 69 [2018-06-22 11:07:16,292 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:16,293 INFO ]: With dead ends: 310 [2018-06-22 11:07:16,293 INFO ]: Without dead ends: 292 [2018-06-22 11:07:16,294 INFO ]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 11:07:16,294 INFO ]: Start minimizeSevpa. Operand 292 states. [2018-06-22 11:07:16,301 INFO ]: Finished minimizeSevpa. Reduced states from 292 to 284. [2018-06-22 11:07:16,301 INFO ]: Start removeUnreachable. Operand 284 states. [2018-06-22 11:07:16,302 INFO ]: Finished removeUnreachable. Reduced from 284 states to 284 states and 338 transitions. [2018-06-22 11:07:16,302 INFO ]: Start accepts. Automaton has 284 states and 338 transitions. Word has length 69 [2018-06-22 11:07:16,302 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:16,302 INFO ]: Abstraction has 284 states and 338 transitions. [2018-06-22 11:07:16,302 INFO ]: Interpolant automaton has 21 states. [2018-06-22 11:07:16,302 INFO ]: Start isEmpty. Operand 284 states and 338 transitions. [2018-06-22 11:07:16,302 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 11:07:16,302 INFO ]: Found error trace [2018-06-22 11:07:16,302 INFO ]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:16,302 INFO ]: === Iteration 55 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:16,303 INFO ]: Analyzing trace with hash -1252440168, now seen corresponding path program 15 times [2018-06-22 11:07:16,303 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:16,303 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:16,303 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:16,303 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:07:16,303 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:16,309 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:16,762 INFO ]: Checked inductivity of 133 backedges. 20 proven. 61 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-06-22 11:07:16,762 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:16,762 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:16,772 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:07:16,818 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-06-22 11:07:16,818 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:16,821 INFO ]: Computing forward predicates... [2018-06-22 11:07:16,919 INFO ]: Checked inductivity of 133 backedges. 30 proven. 47 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-06-22 11:07:16,938 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:16,938 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2018-06-22 11:07:16,938 INFO ]: Interpolant automaton has 22 states [2018-06-22 11:07:16,938 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-22 11:07:16,939 INFO ]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2018-06-22 11:07:16,939 INFO ]: Start difference. First operand 284 states and 338 transitions. Second operand 22 states. [2018-06-22 11:07:17,243 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:17,243 INFO ]: Finished difference Result 306 states and 360 transitions. [2018-06-22 11:07:17,244 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 11:07:17,244 INFO ]: Start accepts. Automaton has 22 states. Word has length 69 [2018-06-22 11:07:17,244 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:17,245 INFO ]: With dead ends: 306 [2018-06-22 11:07:17,245 INFO ]: Without dead ends: 306 [2018-06-22 11:07:17,246 INFO ]: 0 DeclaredPredicates, 108 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2018-06-22 11:07:17,246 INFO ]: Start minimizeSevpa. Operand 306 states. [2018-06-22 11:07:17,250 INFO ]: Finished minimizeSevpa. Reduced states from 306 to 288. [2018-06-22 11:07:17,250 INFO ]: Start removeUnreachable. Operand 288 states. [2018-06-22 11:07:17,251 INFO ]: Finished removeUnreachable. Reduced from 288 states to 288 states and 342 transitions. [2018-06-22 11:07:17,251 INFO ]: Start accepts. Automaton has 288 states and 342 transitions. Word has length 69 [2018-06-22 11:07:17,252 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:17,252 INFO ]: Abstraction has 288 states and 342 transitions. [2018-06-22 11:07:17,252 INFO ]: Interpolant automaton has 22 states. [2018-06-22 11:07:17,252 INFO ]: Start isEmpty. Operand 288 states and 342 transitions. [2018-06-22 11:07:17,252 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 11:07:17,252 INFO ]: Found error trace [2018-06-22 11:07:17,253 INFO ]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:17,253 INFO ]: === Iteration 56 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:17,253 INFO ]: Analyzing trace with hash -1250583552, now seen corresponding path program 13 times [2018-06-22 11:07:17,253 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:17,253 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:17,253 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:17,253 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:07:17,253 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:17,261 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:17,597 INFO ]: Checked inductivity of 110 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-06-22 11:07:17,597 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:17,597 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:17,604 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:17,641 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:17,644 INFO ]: Computing forward predicates... [2018-06-22 11:07:18,028 INFO ]: Checked inductivity of 110 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-06-22 11:07:18,047 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:18,047 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 37 [2018-06-22 11:07:18,047 INFO ]: Interpolant automaton has 37 states [2018-06-22 11:07:18,048 INFO ]: Constructing interpolant automaton starting with 37 interpolants. [2018-06-22 11:07:18,048 INFO ]: CoverageRelationStatistics Valid=87, Invalid=1245, Unknown=0, NotChecked=0, Total=1332 [2018-06-22 11:07:18,048 INFO ]: Start difference. First operand 288 states and 342 transitions. Second operand 37 states. [2018-06-22 11:07:18,488 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:18,488 INFO ]: Finished difference Result 316 states and 371 transitions. [2018-06-22 11:07:18,488 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 11:07:18,488 INFO ]: Start accepts. Automaton has 37 states. Word has length 69 [2018-06-22 11:07:18,488 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:18,489 INFO ]: With dead ends: 316 [2018-06-22 11:07:18,489 INFO ]: Without dead ends: 314 [2018-06-22 11:07:18,489 INFO ]: 0 DeclaredPredicates, 107 GetRequests, 49 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=137, Invalid=2025, Unknown=0, NotChecked=0, Total=2162 [2018-06-22 11:07:18,490 INFO ]: Start minimizeSevpa. Operand 314 states. [2018-06-22 11:07:18,497 INFO ]: Finished minimizeSevpa. Reduced states from 314 to 290. [2018-06-22 11:07:18,497 INFO ]: Start removeUnreachable. Operand 290 states. [2018-06-22 11:07:18,498 INFO ]: Finished removeUnreachable. Reduced from 290 states to 290 states and 345 transitions. [2018-06-22 11:07:18,498 INFO ]: Start accepts. Automaton has 290 states and 345 transitions. Word has length 69 [2018-06-22 11:07:18,498 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:18,498 INFO ]: Abstraction has 290 states and 345 transitions. [2018-06-22 11:07:18,498 INFO ]: Interpolant automaton has 37 states. [2018-06-22 11:07:18,498 INFO ]: Start isEmpty. Operand 290 states and 345 transitions. [2018-06-22 11:07:18,499 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 11:07:18,499 INFO ]: Found error trace [2018-06-22 11:07:18,499 INFO ]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:18,499 INFO ]: === Iteration 57 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:18,499 INFO ]: Analyzing trace with hash 1200572706, now seen corresponding path program 7 times [2018-06-22 11:07:18,500 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:18,500 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:18,500 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:18,500 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:18,500 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:18,509 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:19,186 INFO ]: Checked inductivity of 78 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 11:07:19,186 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:19,186 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:19,191 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:19,227 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:19,230 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 11:07:19,325 INFO ]: Timeout while computing interpolants [2018-06-22 11:07:19,525 WARN ]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:19,525 WARN ]: Verification canceled [2018-06-22 11:07:19,637 WARN ]: Timeout [2018-06-22 11:07:19,637 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:07:19 BoogieIcfgContainer [2018-06-22 11:07:19,637 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:07:19,638 INFO ]: Toolchain (without parser) took 56022.18 ms. Allocated memory was 309.3 MB in the beginning and 745.0 MB in the end (delta: 435.7 MB). Free memory was 262.7 MB in the beginning and 716.6 MB in the end (delta: -453.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 3.6 GB. [2018-06-22 11:07:19,639 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:07:19,640 INFO ]: ChcToBoogie took 57.94 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 260.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:07:19,640 INFO ]: Boogie Preprocessor took 56.82 ms. Allocated memory is still 309.3 MB. Free memory was 260.6 MB in the beginning and 259.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:07:19,640 INFO ]: RCFGBuilder took 390.47 ms. Allocated memory is still 309.3 MB. Free memory was 259.6 MB in the beginning and 247.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:07:19,641 INFO ]: TraceAbstraction took 55506.67 ms. Allocated memory was 309.3 MB in the beginning and 745.0 MB in the end (delta: 435.7 MB). Free memory was 247.6 MB in the beginning and 716.6 MB in the end (delta: -469.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:07:19,643 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.94 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 260.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 56.82 ms. Allocated memory is still 309.3 MB. Free memory was 260.6 MB in the beginning and 259.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 390.47 ms. Allocated memory is still 309.3 MB. Free memory was 259.6 MB in the beginning and 247.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 55506.67 ms. Allocated memory was 309.3 MB in the beginning and 745.0 MB in the end (delta: 435.7 MB). Free memory was 247.6 MB in the beginning and 716.6 MB in the end (delta: -469.0 MB). There was no memory consumed. 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 70 with TraceHistMax 5, 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 8 procedures, 38 locations, 1 error locations. TIMEOUT Result, 55.4s OverallTime, 57 OverallIterations, 7 TraceHistogramMax, 20.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2672 SDtfs, 356 SDslu, 34034 SDs, 0 SdLazy, 16576 SolverSat, 352 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3756 GetRequests, 2274 SyntacticMatches, 169 SemanticMatches, 1313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4756 ImplicationChecksByTransitivity, 31.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=292occurred in iteration=53, 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: 0.5s AutomataMinimizationTime, 56 MinimizatonAttempts, 694 StatesRemovedByMinimization, 53 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 28.9s InterpolantComputationTime, 5241 NumberOfCodeBlocks, 5241 NumberOfCodeBlocksAsserted, 192 NumberOfCheckSat, 5136 ConstructedInterpolants, 0 QuantifiedInterpolants, 875420 SizeOfPredicates, 387 NumberOfNonLiveVariables, 14535 ConjunctsInSsa, 1896 ConjunctsInUnsatCore, 105 InterpolantComputations, 7 PerfectInterpolantSequences, 2554/4552 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/while_after_while_if_merged_safe.c-1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-07-19-658.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/while_after_while_if_merged_safe.c-1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-07-19-658.csv Completed graceful shutdown