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/hcai-bench/arrays_orig/array_fill1_even_odd_abstracted.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:23:50,194 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:23:50,197 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:23:50,210 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:23:50,211 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:23:50,211 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:23:50,214 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:23:50,218 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:23:50,220 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:23:50,221 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:23:50,221 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:23:50,221 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:23:50,222 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:23:50,223 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:23:50,224 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:23:50,227 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:23:50,228 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:23:50,240 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:23:50,242 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:23:50,244 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:23:50,245 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:23:50,247 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:23:50,247 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:23:50,247 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:23:50,248 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:23:50,249 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:23:50,249 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:23:50,250 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:23:50,257 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:23:50,257 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:23:50,258 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:23:50,258 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:23:50,259 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:23:50,259 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:23:50,260 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:23:50,260 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 11:23:50,284 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:23:50,284 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:23:50,284 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:23:50,284 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:23:50,285 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:23:50,286 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:23:50,286 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:23:50,287 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:23:50,287 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:23:50,287 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:23:50,287 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:23:50,287 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:23:50,288 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:23:50,288 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:23:50,288 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:23:50,288 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:23:50,288 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:23:50,288 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:23:50,289 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:23:50,293 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:23:50,293 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:23:50,341 INFO ]: Repository-Root is: /tmp [2018-06-22 11:23:50,354 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:23:50,361 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:23:50,362 INFO ]: Initializing SmtParser... [2018-06-22 11:23:50,363 INFO ]: SmtParser initialized [2018-06-22 11:23:50,363 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_even_odd_abstracted.smt2 [2018-06-22 11:23:50,365 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 11:23:50,454 INFO ]: Executing SMT file /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_even_odd_abstracted.smt2 unknown [2018-06-22 11:23:50,666 INFO ]: Succesfully executed SMT file /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_even_odd_abstracted.smt2 [2018-06-22 11:23:50,680 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:23:50,689 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:23:50,690 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:23:50,690 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:23:50,690 INFO ]: ChcToBoogie initialized [2018-06-22 11:23:50,693 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:23:50" (1/1) ... [2018-06-22 11:23:50,727 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:50 Unit [2018-06-22 11:23:50,728 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:23:50,728 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:23:50,728 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:23:50,728 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:23:50,747 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:50" (1/1) ... [2018-06-22 11:23:50,747 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:50" (1/1) ... [2018-06-22 11:23:50,754 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:50" (1/1) ... [2018-06-22 11:23:50,754 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:50" (1/1) ... [2018-06-22 11:23:50,757 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:50" (1/1) ... [2018-06-22 11:23:50,759 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:50" (1/1) ... [2018-06-22 11:23:50,760 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:50" (1/1) ... [2018-06-22 11:23:50,761 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:23:50,762 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:23:50,762 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:23:50,762 INFO ]: RCFGBuilder initialized [2018-06-22 11:23:50,763 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:50" (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 11:23:50,778 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:23:50,779 INFO ]: Found specification of procedure False [2018-06-22 11:23:50,779 INFO ]: Found implementation of procedure False [2018-06-22 11:23:50,779 INFO ]: Specification and implementation of procedure end given in one single declaration [2018-06-22 11:23:50,779 INFO ]: Found specification of procedure end [2018-06-22 11:23:50,779 INFO ]: Found implementation of procedure end [2018-06-22 11:23:50,779 INFO ]: Specification and implementation of procedure loop given in one single declaration [2018-06-22 11:23:50,779 INFO ]: Found specification of procedure loop [2018-06-22 11:23:50,779 INFO ]: Found implementation of procedure loop [2018-06-22 11:23:50,779 INFO ]: Specification and implementation of procedure incr given in one single declaration [2018-06-22 11:23:50,779 INFO ]: Found specification of procedure incr [2018-06-22 11:23:50,779 INFO ]: Found implementation of procedure incr [2018-06-22 11:23:50,779 INFO ]: Specification and implementation of procedure write given in one single declaration [2018-06-22 11:23:50,779 INFO ]: Found specification of procedure write [2018-06-22 11:23:50,779 INFO ]: Found implementation of procedure write [2018-06-22 11:23:50,779 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:23:50,779 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:23:50,779 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 11:23:51,047 INFO ]: Using library mode [2018-06-22 11:23:51,047 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:23:51 BoogieIcfgContainer [2018-06-22 11:23:51,048 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:23:51,048 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:23:51,048 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:23:51,050 INFO ]: TraceAbstraction initialized [2018-06-22 11:23:51,050 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:23:50" (1/3) ... [2018-06-22 11:23:51,051 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fcf93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:23:51, skipping insertion in model container [2018-06-22 11:23:51,051 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:50" (2/3) ... [2018-06-22 11:23:51,051 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fcf93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:23:51, skipping insertion in model container [2018-06-22 11:23:51,051 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:23:51" (3/3) ... [2018-06-22 11:23:51,053 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:23:51,062 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:23:51,071 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:23:51,108 INFO ]: Using default assertion order modulation [2018-06-22 11:23:51,108 INFO ]: Interprodecural is true [2018-06-22 11:23:51,108 INFO ]: Hoare is false [2018-06-22 11:23:51,108 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:23:51,108 INFO ]: Backedges is TWOTRACK [2018-06-22 11:23:51,108 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:23:51,108 INFO ]: Difference is false [2018-06-22 11:23:51,108 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:23:51,109 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:23:51,122 INFO ]: Start isEmpty. Operand 27 states. [2018-06-22 11:23:51,132 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:23:51,132 INFO ]: Found error trace [2018-06-22 11:23:51,133 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:23:51,133 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:51,138 INFO ]: Analyzing trace with hash 2109075032, now seen corresponding path program 1 times [2018-06-22 11:23:51,139 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:51,140 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:51,173 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:51,173 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:51,173 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:51,206 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:51,272 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:23:51,274 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:23:51,274 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:23:51,276 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:23:51,285 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:23:51,286 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:23:51,287 INFO ]: Start difference. First operand 27 states. Second operand 4 states. [2018-06-22 11:23:51,376 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:51,376 INFO ]: Finished difference Result 27 states and 32 transitions. [2018-06-22 11:23:51,377 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:23:51,378 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 11:23:51,378 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:51,389 INFO ]: With dead ends: 27 [2018-06-22 11:23:51,389 INFO ]: Without dead ends: 27 [2018-06-22 11:23:51,391 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:23:51,409 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 11:23:51,430 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 11:23:51,431 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 11:23:51,432 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2018-06-22 11:23:51,433 INFO ]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 13 [2018-06-22 11:23:51,433 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:51,433 INFO ]: Abstraction has 27 states and 32 transitions. [2018-06-22 11:23:51,433 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:23:51,433 INFO ]: Start isEmpty. Operand 27 states and 32 transitions. [2018-06-22 11:23:51,436 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:23:51,436 INFO ]: Found error trace [2018-06-22 11:23:51,436 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] [2018-06-22 11:23:51,436 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:51,436 INFO ]: Analyzing trace with hash -1843028699, now seen corresponding path program 1 times [2018-06-22 11:23:51,436 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:51,436 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:51,437 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:51,437 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:51,437 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:51,465 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:51,963 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:23:51,964 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:23:51,964 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 11:23:51,972 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:52,013 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:52,023 INFO ]: Computing forward predicates... [2018-06-22 11:23:52,573 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:23:52,606 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:23:52,606 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2018-06-22 11:23:52,607 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:23:52,607 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:23:52,607 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:23:52,607 INFO ]: Start difference. First operand 27 states and 32 transitions. Second operand 14 states. [2018-06-22 11:23:52,970 WARN ]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 11:23:53,419 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:53,419 INFO ]: Finished difference Result 37 states and 44 transitions. [2018-06-22 11:23:53,420 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:23:53,421 INFO ]: Start accepts. Automaton has 14 states. Word has length 25 [2018-06-22 11:23:53,421 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:53,422 INFO ]: With dead ends: 37 [2018-06-22 11:23:53,422 INFO ]: Without dead ends: 37 [2018-06-22 11:23:53,423 INFO ]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:23:53,423 INFO ]: Start minimizeSevpa. Operand 37 states. [2018-06-22 11:23:53,429 INFO ]: Finished minimizeSevpa. Reduced states from 37 to 35. [2018-06-22 11:23:53,429 INFO ]: Start removeUnreachable. Operand 35 states. [2018-06-22 11:23:53,429 INFO ]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2018-06-22 11:23:53,429 INFO ]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 25 [2018-06-22 11:23:53,430 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:53,430 INFO ]: Abstraction has 35 states and 42 transitions. [2018-06-22 11:23:53,430 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:23:53,431 INFO ]: Start isEmpty. Operand 35 states and 42 transitions. [2018-06-22 11:23:53,432 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:23:53,432 INFO ]: Found error trace [2018-06-22 11:23:53,432 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] [2018-06-22 11:23:53,432 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:53,432 INFO ]: Analyzing trace with hash 445539586, now seen corresponding path program 1 times [2018-06-22 11:23:53,432 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:53,432 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:53,433 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:53,433 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:53,433 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:53,450 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:53,603 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:23:53,603 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:23:53,603 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) [2018-06-22 11:23:53,618 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:23:53,630 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:53,633 INFO ]: Computing forward predicates... [2018-06-22 11:23:53,750 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:23:53,786 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:23:53,786 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-06-22 11:23:53,786 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:23:53,786 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:23:53,786 INFO ]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:23:53,786 INFO ]: Start difference. First operand 35 states and 42 transitions. Second operand 9 states. [2018-06-22 11:23:53,969 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:53,969 INFO ]: Finished difference Result 39 states and 45 transitions. [2018-06-22 11:23:53,970 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:23:53,970 INFO ]: Start accepts. Automaton has 9 states. Word has length 25 [2018-06-22 11:23:53,970 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:53,971 INFO ]: With dead ends: 39 [2018-06-22 11:23:53,971 INFO ]: Without dead ends: 37 [2018-06-22 11:23:53,971 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:23:53,972 INFO ]: Start minimizeSevpa. Operand 37 states. [2018-06-22 11:23:53,977 INFO ]: Finished minimizeSevpa. Reduced states from 37 to 33. [2018-06-22 11:23:53,977 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-22 11:23:53,978 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-06-22 11:23:53,978 INFO ]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 25 [2018-06-22 11:23:53,978 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:53,978 INFO ]: Abstraction has 33 states and 39 transitions. [2018-06-22 11:23:53,978 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:23:53,978 INFO ]: Start isEmpty. Operand 33 states and 39 transitions. [2018-06-22 11:23:53,979 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:23:53,979 INFO ]: Found error trace [2018-06-22 11:23:53,980 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] [2018-06-22 11:23:53,980 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:53,980 INFO ]: Analyzing trace with hash 1774313922, now seen corresponding path program 1 times [2018-06-22 11:23:53,980 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:53,980 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:53,981 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:53,981 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:53,981 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:53,993 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:54,152 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:23:54,152 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:23:54,152 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 11:23:54,167 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:23:54,193 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:54,196 INFO ]: Computing forward predicates... [2018-06-22 11:23:54,345 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:23:54,365 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:23:54,365 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-06-22 11:23:54,365 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:23:54,366 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:23:54,366 INFO ]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:23:54,366 INFO ]: Start difference. First operand 33 states and 39 transitions. Second operand 14 states. [2018-06-22 11:23:54,656 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:54,656 INFO ]: Finished difference Result 39 states and 45 transitions. [2018-06-22 11:23:54,656 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:23:54,656 INFO ]: Start accepts. Automaton has 14 states. Word has length 25 [2018-06-22 11:23:54,656 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:54,657 INFO ]: With dead ends: 39 [2018-06-22 11:23:54,657 INFO ]: Without dead ends: 39 [2018-06-22 11:23:54,658 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:23:54,658 INFO ]: Start minimizeSevpa. Operand 39 states. [2018-06-22 11:23:54,663 INFO ]: Finished minimizeSevpa. Reduced states from 39 to 33. [2018-06-22 11:23:54,663 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-22 11:23:54,664 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-06-22 11:23:54,664 INFO ]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 25 [2018-06-22 11:23:54,664 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:54,664 INFO ]: Abstraction has 33 states and 39 transitions. [2018-06-22 11:23:54,664 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:23:54,664 INFO ]: Start isEmpty. Operand 33 states and 39 transitions. [2018-06-22 11:23:54,665 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:23:54,665 INFO ]: Found error trace [2018-06-22 11:23:54,665 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:23:54,665 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:54,665 INFO ]: Analyzing trace with hash 530803407, now seen corresponding path program 2 times [2018-06-22 11:23:54,665 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:54,665 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:54,666 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:54,666 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:54,666 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:54,682 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:54,848 INFO ]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:23:54,848 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:23:54,848 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 11:23:54,854 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:23:54,888 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:23:54,888 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:54,891 INFO ]: Computing forward predicates... [2018-06-22 11:23:54,954 INFO ]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:23:54,984 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:23:54,984 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-06-22 11:23:54,984 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:23:54,985 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:23:54,985 INFO ]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:23:54,985 INFO ]: Start difference. First operand 33 states and 39 transitions. Second operand 14 states. [2018-06-22 11:23:55,429 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:55,429 INFO ]: Finished difference Result 47 states and 55 transitions. [2018-06-22 11:23:55,430 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 11:23:55,430 INFO ]: Start accepts. Automaton has 14 states. Word has length 37 [2018-06-22 11:23:55,430 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:55,431 INFO ]: With dead ends: 47 [2018-06-22 11:23:55,431 INFO ]: Without dead ends: 47 [2018-06-22 11:23:55,432 INFO ]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:23:55,432 INFO ]: Start minimizeSevpa. Operand 47 states. [2018-06-22 11:23:55,438 INFO ]: Finished minimizeSevpa. Reduced states from 47 to 41. [2018-06-22 11:23:55,438 INFO ]: Start removeUnreachable. Operand 41 states. [2018-06-22 11:23:55,439 INFO ]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-06-22 11:23:55,439 INFO ]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 37 [2018-06-22 11:23:55,440 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:55,440 INFO ]: Abstraction has 41 states and 49 transitions. [2018-06-22 11:23:55,440 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:23:55,440 INFO ]: Start isEmpty. Operand 41 states and 49 transitions. [2018-06-22 11:23:55,441 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:23:55,441 INFO ]: Found error trace [2018-06-22 11:23:55,441 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:23:55,441 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:55,441 INFO ]: Analyzing trace with hash 1242790956, now seen corresponding path program 2 times [2018-06-22 11:23:55,441 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:55,441 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:55,442 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:55,442 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:23:55,442 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:55,470 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:55,694 INFO ]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:23:55,694 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:23:55,694 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 11:23:55,699 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:23:55,719 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:23:55,719 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:55,722 INFO ]: Computing forward predicates... [2018-06-22 11:23:55,747 INFO ]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:23:55,766 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:23:55,766 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-06-22 11:23:55,766 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:23:55,767 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:23:55,767 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:23:55,767 INFO ]: Start difference. First operand 41 states and 49 transitions. Second operand 12 states. [2018-06-22 11:23:56,000 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:56,000 INFO ]: Finished difference Result 45 states and 52 transitions. [2018-06-22 11:23:56,001 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:23:56,001 INFO ]: Start accepts. Automaton has 12 states. Word has length 37 [2018-06-22 11:23:56,001 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:56,002 INFO ]: With dead ends: 45 [2018-06-22 11:23:56,002 INFO ]: Without dead ends: 43 [2018-06-22 11:23:56,003 INFO ]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:23:56,003 INFO ]: Start minimizeSevpa. Operand 43 states. [2018-06-22 11:23:56,008 INFO ]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-06-22 11:23:56,008 INFO ]: Start removeUnreachable. Operand 39 states. [2018-06-22 11:23:56,009 INFO ]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-06-22 11:23:56,009 INFO ]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 37 [2018-06-22 11:23:56,010 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:56,010 INFO ]: Abstraction has 39 states and 46 transitions. [2018-06-22 11:23:56,010 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:23:56,010 INFO ]: Start isEmpty. Operand 39 states and 46 transitions. [2018-06-22 11:23:56,011 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:23:56,011 INFO ]: Found error trace [2018-06-22 11:23:56,011 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:23:56,011 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:56,011 INFO ]: Analyzing trace with hash -1469598775, now seen corresponding path program 2 times [2018-06-22 11:23:56,011 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:56,011 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:56,012 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:56,012 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:23:56,012 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:56,032 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:56,194 INFO ]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-22 11:23:56,194 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:23:56,194 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 11:23:56,200 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:23:56,222 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:23:56,222 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:56,224 INFO ]: Computing forward predicates... [2018-06-22 11:23:56,464 INFO ]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:23:56,483 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:23:56,483 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 16 [2018-06-22 11:23:56,483 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:23:56,484 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:23:56,484 INFO ]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:23:56,484 INFO ]: Start difference. First operand 39 states and 46 transitions. Second operand 16 states. [2018-06-22 11:23:56,701 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:56,701 INFO ]: Finished difference Result 57 states and 66 transitions. [2018-06-22 11:23:56,701 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:23:56,702 INFO ]: Start accepts. Automaton has 16 states. Word has length 37 [2018-06-22 11:23:56,702 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:56,703 INFO ]: With dead ends: 57 [2018-06-22 11:23:56,703 INFO ]: Without dead ends: 57 [2018-06-22 11:23:56,703 INFO ]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:23:56,704 INFO ]: Start minimizeSevpa. Operand 57 states. [2018-06-22 11:23:56,713 INFO ]: Finished minimizeSevpa. Reduced states from 57 to 51. [2018-06-22 11:23:56,713 INFO ]: Start removeUnreachable. Operand 51 states. [2018-06-22 11:23:56,714 INFO ]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2018-06-22 11:23:56,714 INFO ]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 37 [2018-06-22 11:23:56,715 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:56,715 INFO ]: Abstraction has 51 states and 60 transitions. [2018-06-22 11:23:56,715 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:23:56,715 INFO ]: Start isEmpty. Operand 51 states and 60 transitions. [2018-06-22 11:23:56,716 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:23:56,716 INFO ]: Found error trace [2018-06-22 11:23:56,716 INFO ]: trace histogram [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] [2018-06-22 11:23:56,716 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:56,716 INFO ]: Analyzing trace with hash 1557928172, now seen corresponding path program 1 times [2018-06-22 11:23:56,716 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:56,716 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:56,717 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:56,717 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:23:56,717 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:56,727 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:56,828 INFO ]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:23:56,828 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:23:56,828 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 11:23:56,837 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:56,853 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:56,855 INFO ]: Computing forward predicates... [2018-06-22 11:23:56,879 INFO ]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:23:56,901 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:23:56,901 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-06-22 11:23:56,901 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:23:56,901 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:23:56,901 INFO ]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:23:56,902 INFO ]: Start difference. First operand 51 states and 60 transitions. Second operand 9 states. [2018-06-22 11:23:56,980 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:56,981 INFO ]: Finished difference Result 61 states and 72 transitions. [2018-06-22 11:23:56,981 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:23:56,981 INFO ]: Start accepts. Automaton has 9 states. Word has length 37 [2018-06-22 11:23:56,981 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:56,982 INFO ]: With dead ends: 61 [2018-06-22 11:23:56,982 INFO ]: Without dead ends: 61 [2018-06-22 11:23:56,982 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:23:56,982 INFO ]: Start minimizeSevpa. Operand 61 states. [2018-06-22 11:23:56,991 INFO ]: Finished minimizeSevpa. Reduced states from 61 to 59. [2018-06-22 11:23:56,991 INFO ]: Start removeUnreachable. Operand 59 states. [2018-06-22 11:23:56,992 INFO ]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-06-22 11:23:56,992 INFO ]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 37 [2018-06-22 11:23:56,992 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:56,992 INFO ]: Abstraction has 59 states and 70 transitions. [2018-06-22 11:23:56,992 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:23:56,992 INFO ]: Start isEmpty. Operand 59 states and 70 transitions. [2018-06-22 11:23:56,994 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:23:56,994 INFO ]: Found error trace [2018-06-22 11:23:56,994 INFO ]: trace histogram [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] [2018-06-22 11:23:56,994 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:56,995 INFO ]: Analyzing trace with hash -2025051575, now seen corresponding path program 1 times [2018-06-22 11:23:56,995 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:56,995 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:56,995 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:56,995 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:56,995 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:57,006 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:57,183 INFO ]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:23:57,183 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:23:57,183 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 11:23:57,189 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:57,217 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:57,220 INFO ]: Computing forward predicates... [2018-06-22 11:23:57,265 INFO ]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:23:57,285 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:23:57,285 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-06-22 11:23:57,285 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:23:57,285 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:23:57,285 INFO ]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:23:57,285 INFO ]: Start difference. First operand 59 states and 70 transitions. Second operand 11 states. [2018-06-22 11:23:57,376 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:57,376 INFO ]: Finished difference Result 63 states and 73 transitions. [2018-06-22 11:23:57,377 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:23:57,377 INFO ]: Start accepts. Automaton has 11 states. Word has length 37 [2018-06-22 11:23:57,377 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:57,378 INFO ]: With dead ends: 63 [2018-06-22 11:23:57,378 INFO ]: Without dead ends: 61 [2018-06-22 11:23:57,378 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:23:57,379 INFO ]: Start minimizeSevpa. Operand 61 states. [2018-06-22 11:23:57,386 INFO ]: Finished minimizeSevpa. Reduced states from 61 to 45. [2018-06-22 11:23:57,386 INFO ]: Start removeUnreachable. Operand 45 states. [2018-06-22 11:23:57,387 INFO ]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2018-06-22 11:23:57,387 INFO ]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 37 [2018-06-22 11:23:57,387 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:57,387 INFO ]: Abstraction has 45 states and 53 transitions. [2018-06-22 11:23:57,387 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:23:57,387 INFO ]: Start isEmpty. Operand 45 states and 53 transitions. [2018-06-22 11:23:57,389 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:23:57,389 INFO ]: Found error trace [2018-06-22 11:23:57,389 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:23:57,389 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:57,389 INFO ]: Analyzing trace with hash -1968588551, now seen corresponding path program 3 times [2018-06-22 11:23:57,389 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:57,389 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:57,390 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:57,390 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:57,390 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:57,402 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:57,781 INFO ]: Checked inductivity of 45 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-22 11:23:57,781 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:23:57,781 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 11:23:57,788 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:23:57,807 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 11:23:57,807 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:57,811 INFO ]: Computing forward predicates... [2018-06-22 11:23:58,121 INFO ]: Checked inductivity of 45 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-22 11:23:58,153 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:23:58,153 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-06-22 11:23:58,153 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:23:58,153 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:23:58,154 INFO ]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:23:58,154 INFO ]: Start difference. First operand 45 states and 53 transitions. Second operand 15 states. [2018-06-22 11:23:58,358 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:58,358 INFO ]: Finished difference Result 63 states and 74 transitions. [2018-06-22 11:23:58,359 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 11:23:58,359 INFO ]: Start accepts. Automaton has 15 states. Word has length 49 [2018-06-22 11:23:58,359 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:58,360 INFO ]: With dead ends: 63 [2018-06-22 11:23:58,360 INFO ]: Without dead ends: 63 [2018-06-22 11:23:58,360 INFO ]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:23:58,360 INFO ]: Start minimizeSevpa. Operand 63 states. [2018-06-22 11:23:58,369 INFO ]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-06-22 11:23:58,369 INFO ]: Start removeUnreachable. Operand 59 states. [2018-06-22 11:23:58,370 INFO ]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-06-22 11:23:58,370 INFO ]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 49 [2018-06-22 11:23:58,371 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:58,371 INFO ]: Abstraction has 59 states and 70 transitions. [2018-06-22 11:23:58,371 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:23:58,371 INFO ]: Start isEmpty. Operand 59 states and 70 transitions. [2018-06-22 11:23:58,372 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:23:58,372 INFO ]: Found error trace [2018-06-22 11:23:58,372 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:23:58,372 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:58,372 INFO ]: Analyzing trace with hash 587125718, now seen corresponding path program 3 times [2018-06-22 11:23:58,372 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:58,372 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:58,373 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:58,373 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:23:58,373 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:58,389 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:58,589 INFO ]: Checked inductivity of 45 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-22 11:23:58,589 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:23:58,625 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 11:23:58,632 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:23:58,653 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 11:23:58,653 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:58,656 INFO ]: Computing forward predicates... [2018-06-22 11:23:58,736 INFO ]: Checked inductivity of 45 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-22 11:23:58,756 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:23:58,756 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2018-06-22 11:23:58,756 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:23:58,756 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:23:58,756 INFO ]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:23:58,756 INFO ]: Start difference. First operand 59 states and 70 transitions. Second operand 17 states. [2018-06-22 11:23:59,098 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:59,098 INFO ]: Finished difference Result 67 states and 77 transitions. [2018-06-22 11:23:59,098 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 11:23:59,098 INFO ]: Start accepts. Automaton has 17 states. Word has length 49 [2018-06-22 11:23:59,098 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:59,099 INFO ]: With dead ends: 67 [2018-06-22 11:23:59,099 INFO ]: Without dead ends: 65 [2018-06-22 11:23:59,100 INFO ]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2018-06-22 11:23:59,100 INFO ]: Start minimizeSevpa. Operand 65 states. [2018-06-22 11:23:59,106 INFO ]: Finished minimizeSevpa. Reduced states from 65 to 57. [2018-06-22 11:23:59,106 INFO ]: Start removeUnreachable. Operand 57 states. [2018-06-22 11:23:59,107 INFO ]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2018-06-22 11:23:59,107 INFO ]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 49 [2018-06-22 11:23:59,107 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:59,107 INFO ]: Abstraction has 57 states and 67 transitions. [2018-06-22 11:23:59,107 INFO ]: Interpolant automaton has 17 states. [2018-06-22 11:23:59,107 INFO ]: Start isEmpty. Operand 57 states and 67 transitions. [2018-06-22 11:23:59,108 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:23:59,108 INFO ]: Found error trace [2018-06-22 11:23:59,108 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:23:59,108 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:59,108 INFO ]: Analyzing trace with hash -1565749098, now seen corresponding path program 2 times [2018-06-22 11:23:59,108 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:59,108 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:59,109 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:59,109 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:23:59,109 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:59,122 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:59,374 INFO ]: Checked inductivity of 43 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:23:59,374 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:23:59,374 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 11:23:59,386 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:23:59,425 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:23:59,425 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:59,428 INFO ]: Computing forward predicates... [2018-06-22 11:23:59,514 INFO ]: Checked inductivity of 43 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:23:59,542 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:23:59,542 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-06-22 11:23:59,542 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:23:59,542 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:23:59,542 INFO ]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:23:59,542 INFO ]: Start difference. First operand 57 states and 67 transitions. Second operand 15 states. [2018-06-22 11:23:59,710 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:59,711 INFO ]: Finished difference Result 71 states and 83 transitions. [2018-06-22 11:23:59,712 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 11:23:59,712 INFO ]: Start accepts. Automaton has 15 states. Word has length 49 [2018-06-22 11:23:59,712 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:59,713 INFO ]: With dead ends: 71 [2018-06-22 11:23:59,713 INFO ]: Without dead ends: 71 [2018-06-22 11:23:59,713 INFO ]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:23:59,713 INFO ]: Start minimizeSevpa. Operand 71 states. [2018-06-22 11:23:59,720 INFO ]: Finished minimizeSevpa. Reduced states from 71 to 65. [2018-06-22 11:23:59,720 INFO ]: Start removeUnreachable. Operand 65 states. [2018-06-22 11:23:59,721 INFO ]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2018-06-22 11:23:59,721 INFO ]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 49 [2018-06-22 11:23:59,721 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:59,721 INFO ]: Abstraction has 65 states and 77 transitions. [2018-06-22 11:23:59,721 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:23:59,721 INFO ]: Start isEmpty. Operand 65 states and 77 transitions. [2018-06-22 11:23:59,722 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:23:59,722 INFO ]: Found error trace [2018-06-22 11:23:59,722 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:23:59,722 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:59,722 INFO ]: Analyzing trace with hash 989965171, now seen corresponding path program 2 times [2018-06-22 11:23:59,722 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:59,722 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:59,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:59,723 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:23:59,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:59,730 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:00,620 INFO ]: Checked inductivity of 43 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:24:00,620 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:00,620 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 11:24:00,625 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:24:00,642 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:24:00,642 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:00,645 INFO ]: Computing forward predicates... [2018-06-22 11:24:00,693 INFO ]: Checked inductivity of 43 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 11:24:00,713 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:00,713 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-06-22 11:24:00,713 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:24:00,713 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:24:00,713 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:24:00,713 INFO ]: Start difference. First operand 65 states and 77 transitions. Second operand 13 states. [2018-06-22 11:24:00,903 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:00,903 INFO ]: Finished difference Result 69 states and 80 transitions. [2018-06-22 11:24:00,905 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:24:00,905 INFO ]: Start accepts. Automaton has 13 states. Word has length 49 [2018-06-22 11:24:00,906 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:00,906 INFO ]: With dead ends: 69 [2018-06-22 11:24:00,906 INFO ]: Without dead ends: 67 [2018-06-22 11:24:00,907 INFO ]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:24:00,907 INFO ]: Start minimizeSevpa. Operand 67 states. [2018-06-22 11:24:00,912 INFO ]: Finished minimizeSevpa. Reduced states from 67 to 51. [2018-06-22 11:24:00,912 INFO ]: Start removeUnreachable. Operand 51 states. [2018-06-22 11:24:00,912 INFO ]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2018-06-22 11:24:00,912 INFO ]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 49 [2018-06-22 11:24:00,921 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:00,921 INFO ]: Abstraction has 51 states and 60 transitions. [2018-06-22 11:24:00,921 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:24:00,921 INFO ]: Start isEmpty. Operand 51 states and 60 transitions. [2018-06-22 11:24:00,922 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:24:00,922 INFO ]: Found error trace [2018-06-22 11:24:00,922 INFO ]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:00,922 INFO ]: === Iteration 14 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:00,922 INFO ]: Analyzing trace with hash 14296995, now seen corresponding path program 4 times [2018-06-22 11:24:00,922 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:00,922 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:00,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:00,923 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:00,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:00,933 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:01,256 INFO ]: Checked inductivity of 84 backedges. 3 proven. 47 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 11:24:01,256 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:01,256 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 11:24:01,264 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:24:01,283 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:24:01,283 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:01,286 INFO ]: Computing forward predicates... [2018-06-22 11:24:01,357 INFO ]: Checked inductivity of 84 backedges. 3 proven. 47 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 11:24:01,377 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:01,377 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2018-06-22 11:24:01,377 INFO ]: Interpolant automaton has 20 states [2018-06-22 11:24:01,377 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 11:24:01,377 INFO ]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:24:01,377 INFO ]: Start difference. First operand 51 states and 60 transitions. Second operand 20 states. [2018-06-22 11:24:01,946 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:01,946 INFO ]: Finished difference Result 75 states and 87 transitions. [2018-06-22 11:24:01,946 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-06-22 11:24:01,946 INFO ]: Start accepts. Automaton has 20 states. Word has length 61 [2018-06-22 11:24:01,946 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:01,947 INFO ]: With dead ends: 75 [2018-06-22 11:24:01,947 INFO ]: Without dead ends: 75 [2018-06-22 11:24:01,947 INFO ]: 0 DeclaredPredicates, 91 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:24:01,947 INFO ]: Start minimizeSevpa. Operand 75 states. [2018-06-22 11:24:01,953 INFO ]: Finished minimizeSevpa. Reduced states from 75 to 65. [2018-06-22 11:24:01,953 INFO ]: Start removeUnreachable. Operand 65 states. [2018-06-22 11:24:01,954 INFO ]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2018-06-22 11:24:01,954 INFO ]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 61 [2018-06-22 11:24:01,955 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:01,955 INFO ]: Abstraction has 65 states and 77 transitions. [2018-06-22 11:24:01,955 INFO ]: Interpolant automaton has 20 states. [2018-06-22 11:24:01,955 INFO ]: Start isEmpty. Operand 65 states and 77 transitions. [2018-06-22 11:24:01,955 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:24:01,955 INFO ]: Found error trace [2018-06-22 11:24:01,956 INFO ]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:01,956 INFO ]: === Iteration 15 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:01,956 INFO ]: Analyzing trace with hash 877792256, now seen corresponding path program 4 times [2018-06-22 11:24:01,956 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:01,956 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:01,956 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:01,956 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:01,956 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:01,965 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:02,175 INFO ]: Checked inductivity of 84 backedges. 3 proven. 47 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 11:24:02,176 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:02,176 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 11:24:02,183 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:24:02,212 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:24:02,212 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:02,214 INFO ]: Computing forward predicates... [2018-06-22 11:24:02,291 INFO ]: Checked inductivity of 84 backedges. 3 proven. 47 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-06-22 11:24:02,323 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:02,323 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-06-22 11:24:02,323 INFO ]: Interpolant automaton has 18 states [2018-06-22 11:24:02,323 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 11:24:02,323 INFO ]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:24:02,323 INFO ]: Start difference. First operand 65 states and 77 transitions. Second operand 18 states. [2018-06-22 11:24:02,634 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:02,634 INFO ]: Finished difference Result 71 states and 82 transitions. [2018-06-22 11:24:02,634 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 11:24:02,634 INFO ]: Start accepts. Automaton has 18 states. Word has length 61 [2018-06-22 11:24:02,635 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:02,635 INFO ]: With dead ends: 71 [2018-06-22 11:24:02,635 INFO ]: Without dead ends: 69 [2018-06-22 11:24:02,636 INFO ]: 0 DeclaredPredicates, 89 GetRequests, 57 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2018-06-22 11:24:02,636 INFO ]: Start minimizeSevpa. Operand 69 states. [2018-06-22 11:24:02,641 INFO ]: Finished minimizeSevpa. Reduced states from 69 to 63. [2018-06-22 11:24:02,641 INFO ]: Start removeUnreachable. Operand 63 states. [2018-06-22 11:24:02,642 INFO ]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2018-06-22 11:24:02,642 INFO ]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 61 [2018-06-22 11:24:02,642 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:02,642 INFO ]: Abstraction has 63 states and 74 transitions. [2018-06-22 11:24:02,642 INFO ]: Interpolant automaton has 18 states. [2018-06-22 11:24:02,642 INFO ]: Start isEmpty. Operand 63 states and 74 transitions. [2018-06-22 11:24:02,645 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:24:02,645 INFO ]: Found error trace [2018-06-22 11:24:02,645 INFO ]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:02,645 INFO ]: === Iteration 16 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:02,645 INFO ]: Analyzing trace with hash 1379199168, now seen corresponding path program 3 times [2018-06-22 11:24:02,645 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:02,645 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:02,646 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:02,646 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:02,646 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:02,653 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:02,866 INFO ]: Checked inductivity of 81 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-06-22 11:24:02,866 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:02,866 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 11:24:02,872 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:24:02,893 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 11:24:02,893 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:02,895 INFO ]: Computing forward predicates... [2018-06-22 11:24:02,916 INFO ]: Checked inductivity of 81 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-06-22 11:24:02,935 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:02,935 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-06-22 11:24:02,935 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:24:02,935 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:24:02,935 INFO ]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:24:02,935 INFO ]: Start difference. First operand 63 states and 74 transitions. Second operand 16 states. [2018-06-22 11:24:03,158 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:03,158 INFO ]: Finished difference Result 77 states and 90 transitions. [2018-06-22 11:24:03,159 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 11:24:03,159 INFO ]: Start accepts. Automaton has 16 states. Word has length 61 [2018-06-22 11:24:03,159 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:03,159 INFO ]: With dead ends: 77 [2018-06-22 11:24:03,159 INFO ]: Without dead ends: 77 [2018-06-22 11:24:03,159 INFO ]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2018-06-22 11:24:03,159 INFO ]: Start minimizeSevpa. Operand 77 states. [2018-06-22 11:24:03,163 INFO ]: Finished minimizeSevpa. Reduced states from 77 to 71. [2018-06-22 11:24:03,163 INFO ]: Start removeUnreachable. Operand 71 states. [2018-06-22 11:24:03,164 INFO ]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2018-06-22 11:24:03,164 INFO ]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 61 [2018-06-22 11:24:03,164 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:03,164 INFO ]: Abstraction has 71 states and 84 transitions. [2018-06-22 11:24:03,164 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:24:03,164 INFO ]: Start isEmpty. Operand 71 states and 84 transitions. [2018-06-22 11:24:03,165 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:24:03,165 INFO ]: Found error trace [2018-06-22 11:24:03,165 INFO ]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:03,165 INFO ]: === Iteration 17 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:03,165 INFO ]: Analyzing trace with hash -2052272867, now seen corresponding path program 3 times [2018-06-22 11:24:03,166 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:03,166 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:03,166 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:03,166 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:03,166 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:03,177 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:03,351 WARN ]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 11:24:03,500 INFO ]: Checked inductivity of 81 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-06-22 11:24:03,500 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:03,500 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 11:24:03,507 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:24:03,529 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 11:24:03,529 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:03,532 INFO ]: Computing forward predicates... [2018-06-22 11:24:03,641 INFO ]: Checked inductivity of 81 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-06-22 11:24:03,660 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:03,660 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2018-06-22 11:24:03,660 INFO ]: Interpolant automaton has 18 states [2018-06-22 11:24:03,660 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 11:24:03,660 INFO ]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:24:03,661 INFO ]: Start difference. First operand 71 states and 84 transitions. Second operand 18 states. [2018-06-22 11:24:03,976 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:03,976 INFO ]: Finished difference Result 101 states and 117 transitions. [2018-06-22 11:24:03,976 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-22 11:24:03,976 INFO ]: Start accepts. Automaton has 18 states. Word has length 61 [2018-06-22 11:24:03,976 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:03,977 INFO ]: With dead ends: 101 [2018-06-22 11:24:03,977 INFO ]: Without dead ends: 99 [2018-06-22 11:24:03,978 INFO ]: 0 DeclaredPredicates, 92 GetRequests, 58 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:24:03,978 INFO ]: Start minimizeSevpa. Operand 99 states. [2018-06-22 11:24:03,983 INFO ]: Finished minimizeSevpa. Reduced states from 99 to 57. [2018-06-22 11:24:03,983 INFO ]: Start removeUnreachable. Operand 57 states. [2018-06-22 11:24:03,984 INFO ]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2018-06-22 11:24:03,984 INFO ]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 61 [2018-06-22 11:24:03,984 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:03,984 INFO ]: Abstraction has 57 states and 67 transitions. [2018-06-22 11:24:03,984 INFO ]: Interpolant automaton has 18 states. [2018-06-22 11:24:03,984 INFO ]: Start isEmpty. Operand 57 states and 67 transitions. [2018-06-22 11:24:03,985 INFO ]: Finished isEmpty. Found accepting run of length 74 [2018-06-22 11:24:03,985 INFO ]: Found error trace [2018-06-22 11:24:03,985 INFO ]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:03,985 INFO ]: === Iteration 18 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:03,985 INFO ]: Analyzing trace with hash -501328179, now seen corresponding path program 5 times [2018-06-22 11:24:03,985 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:03,985 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:03,986 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:03,986 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:03,986 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:03,994 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:04,221 INFO ]: Checked inductivity of 135 backedges. 4 proven. 74 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-06-22 11:24:04,222 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:04,222 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 11:24:04,227 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:24:04,255 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 11:24:04,255 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:04,258 INFO ]: Computing forward predicates... [2018-06-22 11:24:04,300 INFO ]: Checked inductivity of 135 backedges. 4 proven. 74 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-06-22 11:24:04,319 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:04,319 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-06-22 11:24:04,320 INFO ]: Interpolant automaton has 21 states [2018-06-22 11:24:04,320 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 11:24:04,320 INFO ]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:24:04,320 INFO ]: Start difference. First operand 57 states and 67 transitions. Second operand 21 states. [2018-06-22 11:24:04,752 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:04,752 INFO ]: Finished difference Result 79 states and 92 transitions. [2018-06-22 11:24:04,753 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-22 11:24:04,753 INFO ]: Start accepts. Automaton has 21 states. Word has length 73 [2018-06-22 11:24:04,753 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:04,754 INFO ]: With dead ends: 79 [2018-06-22 11:24:04,754 INFO ]: Without dead ends: 79 [2018-06-22 11:24:04,754 INFO ]: 0 DeclaredPredicates, 107 GetRequests, 68 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=851, Unknown=0, NotChecked=0, Total=930 [2018-06-22 11:24:04,754 INFO ]: Start minimizeSevpa. Operand 79 states. [2018-06-22 11:24:04,762 INFO ]: Finished minimizeSevpa. Reduced states from 79 to 71. [2018-06-22 11:24:04,762 INFO ]: Start removeUnreachable. Operand 71 states. [2018-06-22 11:24:04,763 INFO ]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2018-06-22 11:24:04,763 INFO ]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 73 [2018-06-22 11:24:04,764 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:04,764 INFO ]: Abstraction has 71 states and 84 transitions. [2018-06-22 11:24:04,764 INFO ]: Interpolant automaton has 21 states. [2018-06-22 11:24:04,764 INFO ]: Start isEmpty. Operand 71 states and 84 transitions. [2018-06-22 11:24:04,765 INFO ]: Finished isEmpty. Found accepting run of length 74 [2018-06-22 11:24:04,765 INFO ]: Found error trace [2018-06-22 11:24:04,765 INFO ]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:04,765 INFO ]: === Iteration 19 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:04,765 INFO ]: Analyzing trace with hash 794215594, now seen corresponding path program 5 times [2018-06-22 11:24:04,765 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:04,765 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:04,765 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:04,765 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:04,765 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:04,781 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:04,994 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 11:24:05,350 INFO ]: Checked inductivity of 135 backedges. 4 proven. 74 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-06-22 11:24:05,350 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:05,350 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 11:24:05,357 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:24:05,385 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 11:24:05,385 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:05,388 INFO ]: Computing forward predicates... [2018-06-22 11:24:05,529 INFO ]: Checked inductivity of 135 backedges. 4 proven. 74 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-06-22 11:24:05,548 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:05,548 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2018-06-22 11:24:05,548 INFO ]: Interpolant automaton has 23 states [2018-06-22 11:24:05,549 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-22 11:24:05,549 INFO ]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2018-06-22 11:24:05,549 INFO ]: Start difference. First operand 71 states and 84 transitions. Second operand 23 states. [2018-06-22 11:24:06,341 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:06,341 INFO ]: Finished difference Result 85 states and 97 transitions. [2018-06-22 11:24:06,341 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-06-22 11:24:06,341 INFO ]: Start accepts. Automaton has 23 states. Word has length 73 [2018-06-22 11:24:06,341 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:06,342 INFO ]: With dead ends: 85 [2018-06-22 11:24:06,342 INFO ]: Without dead ends: 83 [2018-06-22 11:24:06,343 INFO ]: 0 DeclaredPredicates, 110 GetRequests, 66 SyntacticMatches, 11 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=1078, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 11:24:06,343 INFO ]: Start minimizeSevpa. Operand 83 states. [2018-06-22 11:24:06,350 INFO ]: Finished minimizeSevpa. Reduced states from 83 to 69. [2018-06-22 11:24:06,350 INFO ]: Start removeUnreachable. Operand 69 states. [2018-06-22 11:24:06,350 INFO ]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2018-06-22 11:24:06,351 INFO ]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 73 [2018-06-22 11:24:06,353 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:06,353 INFO ]: Abstraction has 69 states and 81 transitions. [2018-06-22 11:24:06,353 INFO ]: Interpolant automaton has 23 states. [2018-06-22 11:24:06,353 INFO ]: Start isEmpty. Operand 69 states and 81 transitions. [2018-06-22 11:24:06,354 INFO ]: Finished isEmpty. Found accepting run of length 74 [2018-06-22 11:24:06,354 INFO ]: Found error trace [2018-06-22 11:24:06,354 INFO ]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:06,354 INFO ]: === Iteration 20 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:06,354 INFO ]: Analyzing trace with hash -1531002518, now seen corresponding path program 4 times [2018-06-22 11:24:06,354 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:06,354 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:06,354 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:06,354 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:06,354 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:06,366 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:06,688 INFO ]: Checked inductivity of 131 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-06-22 11:24:06,688 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:06,688 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 11:24:06,694 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:24:06,717 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:24:06,717 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:06,719 INFO ]: Computing forward predicates... [2018-06-22 11:24:06,809 INFO ]: Checked inductivity of 131 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-06-22 11:24:06,829 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:06,829 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2018-06-22 11:24:06,829 INFO ]: Interpolant automaton has 21 states [2018-06-22 11:24:06,829 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 11:24:06,829 INFO ]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:24:06,829 INFO ]: Start difference. First operand 69 states and 81 transitions. Second operand 21 states. [2018-06-22 11:24:07,270 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:07,270 INFO ]: Finished difference Result 109 states and 127 transitions. [2018-06-22 11:24:07,270 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-06-22 11:24:07,270 INFO ]: Start accepts. Automaton has 21 states. Word has length 73 [2018-06-22 11:24:07,270 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:07,271 INFO ]: With dead ends: 109 [2018-06-22 11:24:07,271 INFO ]: Without dead ends: 109 [2018-06-22 11:24:07,272 INFO ]: 0 DeclaredPredicates, 110 GetRequests, 69 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2018-06-22 11:24:07,272 INFO ]: Start minimizeSevpa. Operand 109 states. [2018-06-22 11:24:07,277 INFO ]: Finished minimizeSevpa. Reduced states from 109 to 77. [2018-06-22 11:24:07,277 INFO ]: Start removeUnreachable. Operand 77 states. [2018-06-22 11:24:07,278 INFO ]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2018-06-22 11:24:07,278 INFO ]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 73 [2018-06-22 11:24:07,278 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:07,278 INFO ]: Abstraction has 77 states and 91 transitions. [2018-06-22 11:24:07,278 INFO ]: Interpolant automaton has 21 states. [2018-06-22 11:24:07,278 INFO ]: Start isEmpty. Operand 77 states and 91 transitions. [2018-06-22 11:24:07,280 INFO ]: Finished isEmpty. Found accepting run of length 74 [2018-06-22 11:24:07,280 INFO ]: Found error trace [2018-06-22 11:24:07,280 INFO ]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:07,280 INFO ]: === Iteration 21 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:07,280 INFO ]: Analyzing trace with hash -235458745, now seen corresponding path program 4 times [2018-06-22 11:24:07,280 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:07,280 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:07,281 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:07,281 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:07,281 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:07,289 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:07,771 INFO ]: Checked inductivity of 131 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-06-22 11:24:07,771 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:07,771 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 11:24:07,776 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:24:07,799 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:24:07,799 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:07,802 INFO ]: Computing forward predicates... [2018-06-22 11:24:07,846 INFO ]: Checked inductivity of 131 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-06-22 11:24:07,876 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:07,876 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-06-22 11:24:07,876 INFO ]: Interpolant automaton has 19 states [2018-06-22 11:24:07,876 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 11:24:07,877 INFO ]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:24:07,877 INFO ]: Start difference. First operand 77 states and 91 transitions. Second operand 19 states. [2018-06-22 11:24:08,196 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:08,196 INFO ]: Finished difference Result 85 states and 98 transitions. [2018-06-22 11:24:08,197 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-06-22 11:24:08,197 INFO ]: Start accepts. Automaton has 19 states. Word has length 73 [2018-06-22 11:24:08,197 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:08,198 INFO ]: With dead ends: 85 [2018-06-22 11:24:08,198 INFO ]: Without dead ends: 83 [2018-06-22 11:24:08,198 INFO ]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2018-06-22 11:24:08,198 INFO ]: Start minimizeSevpa. Operand 83 states. [2018-06-22 11:24:08,202 INFO ]: Finished minimizeSevpa. Reduced states from 83 to 63. [2018-06-22 11:24:08,202 INFO ]: Start removeUnreachable. Operand 63 states. [2018-06-22 11:24:08,203 INFO ]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2018-06-22 11:24:08,203 INFO ]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 73 [2018-06-22 11:24:08,203 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:08,203 INFO ]: Abstraction has 63 states and 74 transitions. [2018-06-22 11:24:08,203 INFO ]: Interpolant automaton has 19 states. [2018-06-22 11:24:08,203 INFO ]: Start isEmpty. Operand 63 states and 74 transitions. [2018-06-22 11:24:08,204 INFO ]: Finished isEmpty. Found accepting run of length 86 [2018-06-22 11:24:08,204 INFO ]: Found error trace [2018-06-22 11:24:08,204 INFO ]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:08,204 INFO ]: === Iteration 22 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:08,204 INFO ]: Analyzing trace with hash 550283848, now seen corresponding path program 5 times [2018-06-22 11:24:08,204 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:08,204 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:08,206 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:08,206 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:08,206 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:08,218 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:08,587 INFO ]: Checked inductivity of 193 backedges. 5 proven. 102 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-06-22 11:24:08,587 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:08,587 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 11:24:08,593 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:24:08,622 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-22 11:24:08,622 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:08,625 INFO ]: Computing forward predicates... [2018-06-22 11:24:08,856 INFO ]: Checked inductivity of 193 backedges. 5 proven. 102 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-06-22 11:24:08,874 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:08,875 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2018-06-22 11:24:08,875 INFO ]: Interpolant automaton has 26 states [2018-06-22 11:24:08,875 INFO ]: Constructing interpolant automaton starting with 26 interpolants. [2018-06-22 11:24:08,875 INFO ]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2018-06-22 11:24:08,875 INFO ]: Start difference. First operand 63 states and 74 transitions. Second operand 26 states. [2018-06-22 11:24:09,453 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:09,453 INFO ]: Finished difference Result 93 states and 107 transitions. [2018-06-22 11:24:09,455 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-06-22 11:24:09,455 INFO ]: Start accepts. Automaton has 26 states. Word has length 85 [2018-06-22 11:24:09,455 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:09,456 INFO ]: With dead ends: 93 [2018-06-22 11:24:09,456 INFO ]: Without dead ends: 93 [2018-06-22 11:24:09,456 INFO ]: 0 DeclaredPredicates, 128 GetRequests, 75 SyntacticMatches, 15 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=1437, Unknown=0, NotChecked=0, Total=1560 [2018-06-22 11:24:09,456 INFO ]: Start minimizeSevpa. Operand 93 states. [2018-06-22 11:24:09,463 INFO ]: Finished minimizeSevpa. Reduced states from 93 to 77. [2018-06-22 11:24:09,463 INFO ]: Start removeUnreachable. Operand 77 states. [2018-06-22 11:24:09,463 INFO ]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2018-06-22 11:24:09,463 INFO ]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 85 [2018-06-22 11:24:09,464 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:09,464 INFO ]: Abstraction has 77 states and 91 transitions. [2018-06-22 11:24:09,464 INFO ]: Interpolant automaton has 26 states. [2018-06-22 11:24:09,464 INFO ]: Start isEmpty. Operand 77 states and 91 transitions. [2018-06-22 11:24:09,464 INFO ]: Finished isEmpty. Found accepting run of length 86 [2018-06-22 11:24:09,464 INFO ]: Found error trace [2018-06-22 11:24:09,465 INFO ]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:09,465 INFO ]: === Iteration 23 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:09,465 INFO ]: Analyzing trace with hash 295607764, now seen corresponding path program 6 times [2018-06-22 11:24:09,465 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:09,465 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:09,465 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:09,465 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:09,465 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:09,479 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:09,841 INFO ]: Checked inductivity of 198 backedges. 5 proven. 107 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-06-22 11:24:09,841 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:09,841 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 11:24:09,846 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 11:24:09,881 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-22 11:24:09,881 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:09,884 INFO ]: Computing forward predicates... [2018-06-22 11:24:09,993 INFO ]: Checked inductivity of 198 backedges. 5 proven. 107 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-06-22 11:24:10,012 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:10,012 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-06-22 11:24:10,013 INFO ]: Interpolant automaton has 24 states [2018-06-22 11:24:10,013 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 11:24:10,013 INFO ]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-06-22 11:24:10,013 INFO ]: Start difference. First operand 77 states and 91 transitions. Second operand 24 states. [2018-06-22 11:24:10,620 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:10,620 INFO ]: Finished difference Result 87 states and 100 transitions. [2018-06-22 11:24:10,620 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-06-22 11:24:10,620 INFO ]: Start accepts. Automaton has 24 states. Word has length 85 [2018-06-22 11:24:10,621 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:10,621 INFO ]: With dead ends: 87 [2018-06-22 11:24:10,621 INFO ]: Without dead ends: 85 [2018-06-22 11:24:10,622 INFO ]: 0 DeclaredPredicates, 125 GetRequests, 79 SyntacticMatches, 12 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2018-06-22 11:24:10,622 INFO ]: Start minimizeSevpa. Operand 85 states. [2018-06-22 11:24:10,626 INFO ]: Finished minimizeSevpa. Reduced states from 85 to 75. [2018-06-22 11:24:10,626 INFO ]: Start removeUnreachable. Operand 75 states. [2018-06-22 11:24:10,626 INFO ]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2018-06-22 11:24:10,627 INFO ]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 85 [2018-06-22 11:24:10,627 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:10,627 INFO ]: Abstraction has 75 states and 88 transitions. [2018-06-22 11:24:10,627 INFO ]: Interpolant automaton has 24 states. [2018-06-22 11:24:10,627 INFO ]: Start isEmpty. Operand 75 states and 88 transitions. [2018-06-22 11:24:10,627 INFO ]: Finished isEmpty. Found accepting run of length 86 [2018-06-22 11:24:10,627 INFO ]: Found error trace [2018-06-22 11:24:10,627 INFO ]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:10,628 INFO ]: === Iteration 24 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:10,628 INFO ]: Analyzing trace with hash 534493844, now seen corresponding path program 6 times [2018-06-22 11:24:10,628 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:10,628 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:10,628 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:10,628 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:10,628 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:10,639 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:10,980 INFO ]: Checked inductivity of 193 backedges. 8 proven. 102 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-06-22 11:24:10,980 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:10,980 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 11:24:10,985 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 11:24:11,017 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-22 11:24:11,017 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:11,020 INFO ]: Computing forward predicates... [2018-06-22 11:24:11,057 INFO ]: Checked inductivity of 193 backedges. 8 proven. 102 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-06-22 11:24:11,076 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:11,076 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-06-22 11:24:11,076 INFO ]: Interpolant automaton has 22 states [2018-06-22 11:24:11,076 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-22 11:24:11,076 INFO ]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-06-22 11:24:11,076 INFO ]: Start difference. First operand 75 states and 88 transitions. Second operand 22 states. [2018-06-22 11:24:11,886 WARN ]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 11:24:12,351 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:12,351 INFO ]: Finished difference Result 93 states and 108 transitions. [2018-06-22 11:24:12,352 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-06-22 11:24:12,352 INFO ]: Start accepts. Automaton has 22 states. Word has length 85 [2018-06-22 11:24:12,352 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:12,352 INFO ]: With dead ends: 93 [2018-06-22 11:24:12,352 INFO ]: Without dead ends: 93 [2018-06-22 11:24:12,353 INFO ]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 10 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=911, Unknown=0, NotChecked=0, Total=992 [2018-06-22 11:24:12,353 INFO ]: Start minimizeSevpa. Operand 93 states. [2018-06-22 11:24:12,357 INFO ]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-06-22 11:24:12,358 INFO ]: Start removeUnreachable. Operand 83 states. [2018-06-22 11:24:12,358 INFO ]: Finished removeUnreachable. Reduced from 83 states to 83 states and 98 transitions. [2018-06-22 11:24:12,358 INFO ]: Start accepts. Automaton has 83 states and 98 transitions. Word has length 85 [2018-06-22 11:24:12,359 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:12,359 INFO ]: Abstraction has 83 states and 98 transitions. [2018-06-22 11:24:12,359 INFO ]: Interpolant automaton has 22 states. [2018-06-22 11:24:12,359 INFO ]: Start isEmpty. Operand 83 states and 98 transitions. [2018-06-22 11:24:12,359 INFO ]: Finished isEmpty. Found accepting run of length 86 [2018-06-22 11:24:12,359 INFO ]: Found error trace [2018-06-22 11:24:12,359 INFO ]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:12,359 INFO ]: === Iteration 25 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:12,360 INFO ]: Analyzing trace with hash 1188196849, now seen corresponding path program 5 times [2018-06-22 11:24:12,360 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:12,360 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:12,360 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:12,360 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:12,360 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:12,379 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:12,756 INFO ]: Checked inductivity of 193 backedges. 8 proven. 102 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-06-22 11:24:12,756 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:12,756 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 11:24:12,761 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:24:12,804 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-22 11:24:12,805 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:12,808 INFO ]: Computing forward predicates... [2018-06-22 11:24:12,980 INFO ]: Checked inductivity of 193 backedges. 8 proven. 102 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-06-22 11:24:12,999 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:12,999 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 26 [2018-06-22 11:24:13,000 INFO ]: Interpolant automaton has 26 states [2018-06-22 11:24:13,000 INFO ]: Constructing interpolant automaton starting with 26 interpolants. [2018-06-22 11:24:13,000 INFO ]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2018-06-22 11:24:13,000 INFO ]: Start difference. First operand 83 states and 98 transitions. Second operand 26 states. [2018-06-22 11:24:13,574 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:13,574 INFO ]: Finished difference Result 127 states and 147 transitions. [2018-06-22 11:24:13,575 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-06-22 11:24:13,575 INFO ]: Start accepts. Automaton has 26 states. Word has length 85 [2018-06-22 11:24:13,575 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:13,576 INFO ]: With dead ends: 127 [2018-06-22 11:24:13,576 INFO ]: Without dead ends: 125 [2018-06-22 11:24:13,576 INFO ]: 0 DeclaredPredicates, 134 GetRequests, 77 SyntacticMatches, 13 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=1907, Unknown=0, NotChecked=0, Total=2070 [2018-06-22 11:24:13,577 INFO ]: Start minimizeSevpa. Operand 125 states. [2018-06-22 11:24:13,582 INFO ]: Finished minimizeSevpa. Reduced states from 125 to 69. [2018-06-22 11:24:13,582 INFO ]: Start removeUnreachable. Operand 69 states. [2018-06-22 11:24:13,582 INFO ]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2018-06-22 11:24:13,582 INFO ]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 85 [2018-06-22 11:24:13,582 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:13,582 INFO ]: Abstraction has 69 states and 81 transitions. [2018-06-22 11:24:13,582 INFO ]: Interpolant automaton has 26 states. [2018-06-22 11:24:13,582 INFO ]: Start isEmpty. Operand 69 states and 81 transitions. [2018-06-22 11:24:13,583 INFO ]: Finished isEmpty. Found accepting run of length 98 [2018-06-22 11:24:13,583 INFO ]: Found error trace [2018-06-22 11:24:13,583 INFO ]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:13,583 INFO ]: === Iteration 26 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:13,583 INFO ]: Analyzing trace with hash -588220767, now seen corresponding path program 6 times [2018-06-22 11:24:13,583 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:13,583 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:13,584 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:13,584 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:13,584 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:13,594 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:15,274 INFO ]: Checked inductivity of 273 backedges. 6 proven. 146 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-06-22 11:24:15,274 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:15,274 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 11:24:15,279 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 11:24:15,311 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-22 11:24:15,311 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:15,314 INFO ]: Computing forward predicates... [2018-06-22 11:24:15,426 INFO ]: Checked inductivity of 273 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-06-22 11:24:15,445 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:15,445 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 6] total 31 [2018-06-22 11:24:15,445 INFO ]: Interpolant automaton has 31 states [2018-06-22 11:24:15,445 INFO ]: Constructing interpolant automaton starting with 31 interpolants. [2018-06-22 11:24:15,446 INFO ]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-06-22 11:24:15,446 INFO ]: Start difference. First operand 69 states and 81 transitions. Second operand 31 states. [2018-06-22 11:24:17,080 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:17,081 INFO ]: Finished difference Result 111 states and 127 transitions. [2018-06-22 11:24:17,081 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-06-22 11:24:17,081 INFO ]: Start accepts. Automaton has 31 states. Word has length 97 [2018-06-22 11:24:17,081 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:17,081 INFO ]: With dead ends: 111 [2018-06-22 11:24:17,081 INFO ]: Without dead ends: 111 [2018-06-22 11:24:17,082 INFO ]: 0 DeclaredPredicates, 152 GetRequests, 93 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=185, Invalid=2677, Unknown=0, NotChecked=0, Total=2862 [2018-06-22 11:24:17,082 INFO ]: Start minimizeSevpa. Operand 111 states. [2018-06-22 11:24:17,085 INFO ]: Finished minimizeSevpa. Reduced states from 111 to 75. [2018-06-22 11:24:17,085 INFO ]: Start removeUnreachable. Operand 75 states. [2018-06-22 11:24:17,086 INFO ]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2018-06-22 11:24:17,086 INFO ]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 97 [2018-06-22 11:24:17,086 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:17,086 INFO ]: Abstraction has 75 states and 88 transitions. [2018-06-22 11:24:17,086 INFO ]: Interpolant automaton has 31 states. [2018-06-22 11:24:17,086 INFO ]: Start isEmpty. Operand 75 states and 88 transitions. [2018-06-22 11:24:17,087 INFO ]: Finished isEmpty. Found accepting run of length 98 [2018-06-22 11:24:17,087 INFO ]: Found error trace [2018-06-22 11:24:17,087 INFO ]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:17,087 INFO ]: === Iteration 27 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:17,087 INFO ]: Analyzing trace with hash -821872770, now seen corresponding path program 7 times [2018-06-22 11:24:17,087 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:17,087 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:17,087 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:17,087 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:24:17,087 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:17,101 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:17,273 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 11:24:17,584 INFO ]: Checked inductivity of 273 backedges. 6 proven. 146 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-06-22 11:24:17,585 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:17,585 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 11:24:17,590 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:24:17,621 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:17,624 INFO ]: Computing forward predicates... [2018-06-22 11:24:17,748 INFO ]: Checked inductivity of 273 backedges. 6 proven. 146 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-06-22 11:24:17,767 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:17,767 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2018-06-22 11:24:17,768 INFO ]: Interpolant automaton has 29 states [2018-06-22 11:24:17,768 INFO ]: Constructing interpolant automaton starting with 29 interpolants. [2018-06-22 11:24:17,768 INFO ]: CoverageRelationStatistics Valid=63, Invalid=749, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:24:17,768 INFO ]: Start difference. First operand 75 states and 88 transitions. Second operand 29 states. [2018-06-22 11:24:18,407 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:18,407 INFO ]: Finished difference Result 107 states and 122 transitions. [2018-06-22 11:24:18,407 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-06-22 11:24:18,407 INFO ]: Start accepts. Automaton has 29 states. Word has length 97 [2018-06-22 11:24:18,407 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:18,408 INFO ]: With dead ends: 107 [2018-06-22 11:24:18,408 INFO ]: Without dead ends: 105 [2018-06-22 11:24:18,408 INFO ]: 0 DeclaredPredicates, 147 GetRequests, 88 SyntacticMatches, 15 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=1917, Unknown=0, NotChecked=0, Total=2070 [2018-06-22 11:24:18,408 INFO ]: Start minimizeSevpa. Operand 105 states. [2018-06-22 11:24:18,412 INFO ]: Finished minimizeSevpa. Reduced states from 105 to 87. [2018-06-22 11:24:18,412 INFO ]: Start removeUnreachable. Operand 87 states. [2018-06-22 11:24:18,413 INFO ]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2018-06-22 11:24:18,413 INFO ]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 97 [2018-06-22 11:24:18,413 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:18,413 INFO ]: Abstraction has 87 states and 102 transitions. [2018-06-22 11:24:18,413 INFO ]: Interpolant automaton has 29 states. [2018-06-22 11:24:18,414 INFO ]: Start isEmpty. Operand 87 states and 102 transitions. [2018-06-22 11:24:18,414 INFO ]: Finished isEmpty. Found accepting run of length 98 [2018-06-22 11:24:18,414 INFO ]: Found error trace [2018-06-22 11:24:18,414 INFO ]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:18,414 INFO ]: === Iteration 28 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:18,414 INFO ]: Analyzing trace with hash 1063613502, now seen corresponding path program 7 times [2018-06-22 11:24:18,414 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:18,414 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:18,415 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:18,415 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:24:18,415 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:18,428 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:18,640 WARN ]: Spent 153.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-06-22 11:24:18,755 INFO ]: Checked inductivity of 267 backedges. 56 proven. 5 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2018-06-22 11:24:18,755 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:18,755 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 11:24:18,762 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:24:18,796 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:18,799 INFO ]: Computing forward predicates... [2018-06-22 11:24:19,349 INFO ]: Checked inductivity of 267 backedges. 10 proven. 141 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-06-22 11:24:19,381 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:19,381 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 26] total 31 [2018-06-22 11:24:19,381 INFO ]: Interpolant automaton has 31 states [2018-06-22 11:24:19,382 INFO ]: Constructing interpolant automaton starting with 31 interpolants. [2018-06-22 11:24:19,382 INFO ]: CoverageRelationStatistics Valid=64, Invalid=866, Unknown=0, NotChecked=0, Total=930 [2018-06-22 11:24:19,382 INFO ]: Start difference. First operand 87 states and 102 transitions. Second operand 31 states. [2018-06-22 11:24:21,100 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:21,100 INFO ]: Finished difference Result 179 states and 208 transitions. [2018-06-22 11:24:21,101 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-06-22 11:24:21,101 INFO ]: Start accepts. Automaton has 31 states. Word has length 97 [2018-06-22 11:24:21,101 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:21,102 INFO ]: With dead ends: 179 [2018-06-22 11:24:21,102 INFO ]: Without dead ends: 178 [2018-06-22 11:24:21,103 INFO ]: 0 DeclaredPredicates, 154 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=313, Invalid=4657, Unknown=0, NotChecked=0, Total=4970 [2018-06-22 11:24:21,103 INFO ]: Start minimizeSevpa. Operand 178 states. [2018-06-22 11:24:21,109 INFO ]: Finished minimizeSevpa. Reduced states from 178 to 80. [2018-06-22 11:24:21,109 INFO ]: Start removeUnreachable. Operand 80 states. [2018-06-22 11:24:21,110 INFO ]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2018-06-22 11:24:21,110 INFO ]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 97 [2018-06-22 11:24:21,110 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:21,110 INFO ]: Abstraction has 80 states and 92 transitions. [2018-06-22 11:24:21,110 INFO ]: Interpolant automaton has 31 states. [2018-06-22 11:24:21,110 INFO ]: Start isEmpty. Operand 80 states and 92 transitions. [2018-06-22 11:24:21,111 INFO ]: Finished isEmpty. Found accepting run of length 98 [2018-06-22 11:24:21,111 INFO ]: Found error trace [2018-06-22 11:24:21,111 INFO ]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:24:21,113 INFO ]: === Iteration 29 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:24:21,113 INFO ]: Analyzing trace with hash 829961499, now seen corresponding path program 6 times [2018-06-22 11:24:21,113 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:24:21,113 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:24:21,113 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:21,113 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:24:21,113 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:24:21,125 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:22,491 INFO ]: Checked inductivity of 267 backedges. 10 proven. 141 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-06-22 11:24:22,491 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:24:22,491 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 11:24:22,503 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 11:24:22,538 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-22 11:24:22,538 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:24:22,541 INFO ]: Computing forward predicates... [2018-06-22 11:24:22,668 INFO ]: Checked inductivity of 267 backedges. 56 proven. 5 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2018-06-22 11:24:22,686 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:24:22,686 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7] total 30 [2018-06-22 11:24:22,687 INFO ]: Interpolant automaton has 30 states [2018-06-22 11:24:22,687 INFO ]: Constructing interpolant automaton starting with 30 interpolants. [2018-06-22 11:24:22,687 INFO ]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-06-22 11:24:22,687 INFO ]: Start difference. First operand 80 states and 92 transitions. Second operand 30 states. [2018-06-22 11:24:23,633 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:24:23,633 INFO ]: Finished difference Result 136 states and 156 transitions. [2018-06-22 11:24:23,633 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-06-22 11:24:23,633 INFO ]: Start accepts. Automaton has 30 states. Word has length 97 [2018-06-22 11:24:23,633 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:24:23,633 INFO ]: With dead ends: 136 [2018-06-22 11:24:23,633 INFO ]: Without dead ends: 0 [2018-06-22 11:24:23,635 INFO ]: 0 DeclaredPredicates, 164 GetRequests, 99 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=215, Invalid=3445, Unknown=0, NotChecked=0, Total=3660 [2018-06-22 11:24:23,635 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:24:23,635 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:24:23,635 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:24:23,635 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:24:23,635 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 97 [2018-06-22 11:24:23,635 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:24:23,635 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:24:23,635 INFO ]: Interpolant automaton has 30 states. [2018-06-22 11:24:23,635 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:24:23,635 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:24:23,730 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:24:23 BoogieIcfgContainer [2018-06-22 11:24:23,730 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:24:23,731 INFO ]: Toolchain (without parser) took 33050.30 ms. Allocated memory was 308.8 MB in the beginning and 695.7 MB in the end (delta: 386.9 MB). Free memory was 265.3 MB in the beginning and 672.0 MB in the end (delta: -406.6 MB). Peak memory consumption was 237.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:24:23,732 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:24:23,732 INFO ]: ChcToBoogie took 38.23 ms. Allocated memory is still 308.8 MB. Free memory was 265.3 MB in the beginning and 263.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:24:23,732 INFO ]: Boogie Preprocessor took 33.05 ms. Allocated memory is still 308.8 MB. Free memory was 263.3 MB in the beginning and 262.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:24:23,733 INFO ]: RCFGBuilder took 285.69 ms. Allocated memory is still 308.8 MB. Free memory was 262.3 MB in the beginning and 254.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:24:23,734 INFO ]: TraceAbstraction took 32682.19 ms. Allocated memory was 308.8 MB in the beginning and 695.7 MB in the end (delta: 386.9 MB). Free memory was 254.3 MB in the beginning and 672.0 MB in the end (delta: -417.7 MB). Peak memory consumption was 226.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:24:23,736 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 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 38.23 ms. Allocated memory is still 308.8 MB. Free memory was 265.3 MB in the beginning and 263.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 33.05 ms. Allocated memory is still 308.8 MB. Free memory was 263.3 MB in the beginning and 262.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 285.69 ms. Allocated memory is still 308.8 MB. Free memory was 262.3 MB in the beginning and 254.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 32682.19 ms. Allocated memory was 308.8 MB in the beginning and 695.7 MB in the end (delta: 386.9 MB). Free memory was 254.3 MB in the beginning and 672.0 MB in the end (delta: -417.7 MB). Peak memory consumption was 226.0 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 27 locations, 1 error locations. SAFE Result, 32.6s OverallTime, 29 OverallIterations, 8 TraceHistogramMax, 14.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 986 SDtfs, 346 SDslu, 13888 SDs, 0 SdLazy, 10418 SolverSat, 219 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2566 GetRequests, 1605 SyntacticMatches, 194 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3240 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=27, 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: 0.2s AutomataMinimizationTime, 29 MinimizatonAttempts, 462 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 15.1s InterpolantComputationTime, 3453 NumberOfCodeBlocks, 3429 NumberOfCodeBlocksAsserted, 122 NumberOfCheckSat, 3396 ConstructedInterpolants, 0 QuantifiedInterpolants, 911856 SizeOfPredicates, 123 NumberOfNonLiveVariables, 5721 ConjunctsInSsa, 999 ConjunctsInUnsatCore, 57 InterpolantComputations, 1 PerfectInterpolantSequences, 3212/5984 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_fill1_even_odd_abstracted.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-24-23-745.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_fill1_even_odd_abstracted.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-24-23-745.csv Received shutdown request...