java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/006-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:10:18,765 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:10:18,767 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:10:18,781 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:10:18,781 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:10:18,782 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:10:18,785 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:10:18,787 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:10:18,788 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:10:18,789 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:10:18,791 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:10:18,791 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:10:18,792 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:10:18,793 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:10:18,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:10:18,794 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:10:18,797 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:10:18,799 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:10:18,809 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:10:18,810 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:10:18,811 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:10:18,813 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:10:18,813 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:10:18,813 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:10:18,814 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:10:18,818 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:10:18,819 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:10:18,820 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:10:18,820 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:10:18,821 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:10:18,821 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:10:18,822 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:10:18,822 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:10:18,823 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:10:18,823 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:10:18,824 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 11:10:18,836 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:10:18,837 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:10:18,837 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:10:18,837 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:10:18,838 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:10:18,838 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:10:18,838 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:10:18,839 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:10:18,839 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:10:18,839 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:10:18,839 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:10:18,839 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:10:18,839 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:10:18,840 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:10:18,840 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:10:18,840 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:10:18,840 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:10:18,840 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:10:18,840 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:10:18,842 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:10:18,842 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:10:18,887 INFO ]: Repository-Root is: /tmp [2018-06-22 11:10:18,906 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:10:18,914 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:10:18,916 INFO ]: Initializing SmtParser... [2018-06-22 11:10:18,916 INFO ]: SmtParser initialized [2018-06-22 11:10:18,916 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/006-horn.smt2 [2018-06-22 11:10:18,918 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 11:10:19,007 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/006-horn.smt2 unknown [2018-06-22 11:10:19,316 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/006-horn.smt2 [2018-06-22 11:10:19,325 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:10:19,330 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:10:19,330 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:10:19,330 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:10:19,330 INFO ]: ChcToBoogie initialized [2018-06-22 11:10:19,334 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:10:19" (1/1) ... [2018-06-22 11:10:19,390 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:10:19 Unit [2018-06-22 11:10:19,390 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:10:19,391 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:10:19,391 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:10:19,391 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:10:19,414 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:10:19" (1/1) ... [2018-06-22 11:10:19,414 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:10:19" (1/1) ... [2018-06-22 11:10:19,424 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:10:19" (1/1) ... [2018-06-22 11:10:19,424 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:10:19" (1/1) ... [2018-06-22 11:10:19,439 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:10:19" (1/1) ... [2018-06-22 11:10:19,441 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:10:19" (1/1) ... [2018-06-22 11:10:19,443 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:10:19" (1/1) ... [2018-06-22 11:10:19,445 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:10:19,445 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:10:19,445 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:10:19,445 INFO ]: RCFGBuilder initialized [2018-06-22 11:10:19,446 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:10:19" (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 11:10:19,469 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:10:19,469 INFO ]: Found specification of procedure False [2018-06-22 11:10:19,469 INFO ]: Found implementation of procedure False [2018-06-22 11:10:19,469 INFO ]: Specification and implementation of procedure INV2 given in one single declaration [2018-06-22 11:10:19,469 INFO ]: Found specification of procedure INV2 [2018-06-22 11:10:19,469 INFO ]: Found implementation of procedure INV2 [2018-06-22 11:10:19,469 INFO ]: Specification and implementation of procedure INV1 given in one single declaration [2018-06-22 11:10:19,469 INFO ]: Found specification of procedure INV1 [2018-06-22 11:10:19,469 INFO ]: Found implementation of procedure INV1 [2018-06-22 11:10:19,469 INFO ]: Specification and implementation of procedure INV3 given in one single declaration [2018-06-22 11:10:19,469 INFO ]: Found specification of procedure INV3 [2018-06-22 11:10:19,469 INFO ]: Found implementation of procedure INV3 [2018-06-22 11:10:19,469 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:10:19,469 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:10:19,469 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 11:10:19,861 INFO ]: Using library mode [2018-06-22 11:10:19,862 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:10:19 BoogieIcfgContainer [2018-06-22 11:10:19,862 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:10:19,864 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:10:19,864 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:10:19,867 INFO ]: TraceAbstraction initialized [2018-06-22 11:10:19,867 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:10:19" (1/3) ... [2018-06-22 11:10:19,868 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa2c8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:10:19, skipping insertion in model container [2018-06-22 11:10:19,868 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:10:19" (2/3) ... [2018-06-22 11:10:19,868 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa2c8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:10:19, skipping insertion in model container [2018-06-22 11:10:19,868 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:10:19" (3/3) ... [2018-06-22 11:10:19,870 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:10:19,877 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:10:19,884 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:10:19,932 INFO ]: Using default assertion order modulation [2018-06-22 11:10:19,933 INFO ]: Interprodecural is true [2018-06-22 11:10:19,933 INFO ]: Hoare is false [2018-06-22 11:10:19,933 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:10:19,933 INFO ]: Backedges is TWOTRACK [2018-06-22 11:10:19,933 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:10:19,933 INFO ]: Difference is false [2018-06-22 11:10:19,933 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:10:19,933 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:10:19,948 INFO ]: Start isEmpty. Operand 41 states. [2018-06-22 11:10:19,964 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:10:19,964 INFO ]: Found error trace [2018-06-22 11:10:19,965 INFO ]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:19,965 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:19,969 INFO ]: Analyzing trace with hash -1362844253, now seen corresponding path program 1 times [2018-06-22 11:10:19,970 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:19,970 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:20,002 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:20,002 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:20,002 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:20,076 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:20,272 INFO ]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-22 11:10:20,275 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:20,275 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 11:10:20,287 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:20,342 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:20,356 INFO ]: Computing forward predicates... [2018-06-22 11:10:20,688 INFO ]: Checked inductivity of 22 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:10:20,710 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:20,710 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 11:10:20,712 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:10:20,724 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:10:20,725 INFO ]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:10:20,727 INFO ]: Start difference. First operand 41 states. Second operand 9 states. [2018-06-22 11:10:21,554 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:21,554 INFO ]: Finished difference Result 46 states and 97 transitions. [2018-06-22 11:10:21,554 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:10:21,555 INFO ]: Start accepts. Automaton has 9 states. Word has length 33 [2018-06-22 11:10:21,556 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:21,567 INFO ]: With dead ends: 46 [2018-06-22 11:10:21,567 INFO ]: Without dead ends: 46 [2018-06-22 11:10:21,569 INFO ]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:10:21,586 INFO ]: Start minimizeSevpa. Operand 46 states. [2018-06-22 11:10:21,622 INFO ]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-06-22 11:10:21,623 INFO ]: Start removeUnreachable. Operand 46 states. [2018-06-22 11:10:21,626 INFO ]: Finished removeUnreachable. Reduced from 46 states to 46 states and 97 transitions. [2018-06-22 11:10:21,628 INFO ]: Start accepts. Automaton has 46 states and 97 transitions. Word has length 33 [2018-06-22 11:10:21,629 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:21,629 INFO ]: Abstraction has 46 states and 97 transitions. [2018-06-22 11:10:21,629 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:10:21,629 INFO ]: Start isEmpty. Operand 46 states and 97 transitions. [2018-06-22 11:10:21,634 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:10:21,634 INFO ]: Found error trace [2018-06-22 11:10:21,634 INFO ]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:21,634 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:21,634 INFO ]: Analyzing trace with hash -533630547, now seen corresponding path program 1 times [2018-06-22 11:10:21,634 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:21,635 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:21,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:21,636 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:21,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:21,666 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:22,061 INFO ]: Checked inductivity of 50 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 11:10:22,061 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:22,061 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:10:22,078 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:22,128 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:22,133 INFO ]: Computing forward predicates... [2018-06-22 11:10:22,409 INFO ]: Checked inductivity of 50 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-22 11:10:22,444 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:22,445 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2018-06-22 11:10:22,445 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:10:22,446 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:10:22,446 INFO ]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:10:22,446 INFO ]: Start difference. First operand 46 states and 97 transitions. Second operand 12 states. [2018-06-22 11:10:24,235 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:24,235 INFO ]: Finished difference Result 73 states and 232 transitions. [2018-06-22 11:10:24,235 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 11:10:24,235 INFO ]: Start accepts. Automaton has 12 states. Word has length 41 [2018-06-22 11:10:24,236 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:24,243 INFO ]: With dead ends: 73 [2018-06-22 11:10:24,243 INFO ]: Without dead ends: 73 [2018-06-22 11:10:24,244 INFO ]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:10:24,244 INFO ]: Start minimizeSevpa. Operand 73 states. [2018-06-22 11:10:24,277 INFO ]: Finished minimizeSevpa. Reduced states from 73 to 60. [2018-06-22 11:10:24,277 INFO ]: Start removeUnreachable. Operand 60 states. [2018-06-22 11:10:24,280 INFO ]: Finished removeUnreachable. Reduced from 60 states to 60 states and 166 transitions. [2018-06-22 11:10:24,280 INFO ]: Start accepts. Automaton has 60 states and 166 transitions. Word has length 41 [2018-06-22 11:10:24,281 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:24,281 INFO ]: Abstraction has 60 states and 166 transitions. [2018-06-22 11:10:24,281 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:10:24,281 INFO ]: Start isEmpty. Operand 60 states and 166 transitions. [2018-06-22 11:10:24,286 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:10:24,286 INFO ]: Found error trace [2018-06-22 11:10:24,286 INFO ]: trace histogram [6, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:24,286 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:24,286 INFO ]: Analyzing trace with hash -1801876150, now seen corresponding path program 1 times [2018-06-22 11:10:24,286 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:24,286 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:24,287 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:24,287 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:24,287 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:24,311 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:24,382 INFO ]: Checked inductivity of 49 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 11:10:24,382 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:24,382 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 11:10:24,397 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 11:10:24,432 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:24,435 INFO ]: Computing forward predicates... [2018-06-22 11:10:24,560 INFO ]: Checked inductivity of 49 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-06-22 11:10:24,590 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:24,590 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 11:10:24,590 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:10:24,590 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:10:24,590 INFO ]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:10:24,591 INFO ]: Start difference. First operand 60 states and 166 transitions. Second operand 14 states. [2018-06-22 11:10:25,625 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:25,626 INFO ]: Finished difference Result 96 states and 368 transitions. [2018-06-22 11:10:25,626 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 11:10:25,626 INFO ]: Start accepts. Automaton has 14 states. Word has length 41 [2018-06-22 11:10:25,626 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:25,632 INFO ]: With dead ends: 96 [2018-06-22 11:10:25,632 INFO ]: Without dead ends: 96 [2018-06-22 11:10:25,633 INFO ]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2018-06-22 11:10:25,633 INFO ]: Start minimizeSevpa. Operand 96 states. [2018-06-22 11:10:25,675 INFO ]: Finished minimizeSevpa. Reduced states from 96 to 73. [2018-06-22 11:10:25,675 INFO ]: Start removeUnreachable. Operand 73 states. [2018-06-22 11:10:25,677 INFO ]: Finished removeUnreachable. Reduced from 73 states to 73 states and 230 transitions. [2018-06-22 11:10:25,677 INFO ]: Start accepts. Automaton has 73 states and 230 transitions. Word has length 41 [2018-06-22 11:10:25,678 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:25,678 INFO ]: Abstraction has 73 states and 230 transitions. [2018-06-22 11:10:25,678 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:10:25,678 INFO ]: Start isEmpty. Operand 73 states and 230 transitions. [2018-06-22 11:10:25,682 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:10:25,682 INFO ]: Found error trace [2018-06-22 11:10:25,682 INFO ]: trace histogram [6, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:25,682 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:25,682 INFO ]: Analyzing trace with hash 862961946, now seen corresponding path program 1 times [2018-06-22 11:10:25,683 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:25,683 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:25,683 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:25,683 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:25,683 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:25,706 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:25,791 INFO ]: Checked inductivity of 55 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-06-22 11:10:25,838 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:25,838 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 11:10:25,845 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:25,894 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:25,898 INFO ]: Computing forward predicates... [2018-06-22 11:10:26,126 INFO ]: Checked inductivity of 55 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-06-22 11:10:26,149 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:26,149 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2018-06-22 11:10:26,149 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:10:26,150 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:10:26,150 INFO ]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:10:26,150 INFO ]: Start difference. First operand 73 states and 230 transitions. Second operand 11 states. [2018-06-22 11:10:27,292 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:27,292 INFO ]: Finished difference Result 139 states and 473 transitions. [2018-06-22 11:10:27,292 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 11:10:27,292 INFO ]: Start accepts. Automaton has 11 states. Word has length 45 [2018-06-22 11:10:27,292 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:27,297 INFO ]: With dead ends: 139 [2018-06-22 11:10:27,297 INFO ]: Without dead ends: 139 [2018-06-22 11:10:27,297 INFO ]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:10:27,297 INFO ]: Start minimizeSevpa. Operand 139 states. [2018-06-22 11:10:27,339 INFO ]: Finished minimizeSevpa. Reduced states from 139 to 103. [2018-06-22 11:10:27,339 INFO ]: Start removeUnreachable. Operand 103 states. [2018-06-22 11:10:27,342 INFO ]: Finished removeUnreachable. Reduced from 103 states to 103 states and 339 transitions. [2018-06-22 11:10:27,342 INFO ]: Start accepts. Automaton has 103 states and 339 transitions. Word has length 45 [2018-06-22 11:10:27,342 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:27,342 INFO ]: Abstraction has 103 states and 339 transitions. [2018-06-22 11:10:27,342 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:10:27,342 INFO ]: Start isEmpty. Operand 103 states and 339 transitions. [2018-06-22 11:10:27,347 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 11:10:27,347 INFO ]: Found error trace [2018-06-22 11:10:27,347 INFO ]: trace histogram [8, 6, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:27,347 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:27,347 INFO ]: Analyzing trace with hash 1170643490, now seen corresponding path program 1 times [2018-06-22 11:10:27,347 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:27,347 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:27,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:27,348 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:27,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:27,379 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:27,464 INFO ]: Checked inductivity of 99 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-06-22 11:10:27,465 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:27,465 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 11:10:27,472 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:27,539 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:27,543 INFO ]: Computing forward predicates... [2018-06-22 11:10:27,872 INFO ]: Checked inductivity of 99 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-06-22 11:10:27,893 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:10:27,893 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2018-06-22 11:10:27,893 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:10:27,893 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:10:27,893 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:10:27,894 INFO ]: Start difference. First operand 103 states and 339 transitions. Second operand 8 states. [2018-06-22 11:10:28,619 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:28,619 INFO ]: Finished difference Result 132 states and 462 transitions. [2018-06-22 11:10:28,619 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:10:28,619 INFO ]: Start accepts. Automaton has 8 states. Word has length 57 [2018-06-22 11:10:28,619 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:28,624 INFO ]: With dead ends: 132 [2018-06-22 11:10:28,624 INFO ]: Without dead ends: 132 [2018-06-22 11:10:28,624 INFO ]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:10:28,624 INFO ]: Start minimizeSevpa. Operand 132 states. [2018-06-22 11:10:28,665 INFO ]: Finished minimizeSevpa. Reduced states from 132 to 124. [2018-06-22 11:10:28,665 INFO ]: Start removeUnreachable. Operand 124 states. [2018-06-22 11:10:28,670 INFO ]: Finished removeUnreachable. Reduced from 124 states to 124 states and 440 transitions. [2018-06-22 11:10:28,670 INFO ]: Start accepts. Automaton has 124 states and 440 transitions. Word has length 57 [2018-06-22 11:10:28,670 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:28,670 INFO ]: Abstraction has 124 states and 440 transitions. [2018-06-22 11:10:28,670 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:10:28,670 INFO ]: Start isEmpty. Operand 124 states and 440 transitions. [2018-06-22 11:10:28,675 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:10:28,675 INFO ]: Found error trace [2018-06-22 11:10:28,675 INFO ]: trace histogram [6, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:28,675 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:28,675 INFO ]: Analyzing trace with hash 459947744, now seen corresponding path program 1 times [2018-06-22 11:10:28,675 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:28,675 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:28,677 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:28,677 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:28,677 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:28,695 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:28,764 INFO ]: Checked inductivity of 55 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-06-22 11:10:28,765 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:28,765 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 11:10:28,770 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:28,811 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:28,814 INFO ]: Computing forward predicates... [2018-06-22 11:10:28,928 INFO ]: Checked inductivity of 55 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-06-22 11:10:28,962 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:28,962 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2018-06-22 11:10:28,962 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:10:28,962 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:10:28,962 INFO ]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:10:28,963 INFO ]: Start difference. First operand 124 states and 440 transitions. Second operand 11 states. [2018-06-22 11:10:29,772 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:29,772 INFO ]: Finished difference Result 153 states and 514 transitions. [2018-06-22 11:10:29,773 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 11:10:29,773 INFO ]: Start accepts. Automaton has 11 states. Word has length 45 [2018-06-22 11:10:29,773 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:29,777 INFO ]: With dead ends: 153 [2018-06-22 11:10:29,777 INFO ]: Without dead ends: 153 [2018-06-22 11:10:29,778 INFO ]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:10:29,778 INFO ]: Start minimizeSevpa. Operand 153 states. [2018-06-22 11:10:29,805 INFO ]: Finished minimizeSevpa. Reduced states from 153 to 108. [2018-06-22 11:10:29,805 INFO ]: Start removeUnreachable. Operand 108 states. [2018-06-22 11:10:29,808 INFO ]: Finished removeUnreachable. Reduced from 108 states to 108 states and 354 transitions. [2018-06-22 11:10:29,808 INFO ]: Start accepts. Automaton has 108 states and 354 transitions. Word has length 45 [2018-06-22 11:10:29,808 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:29,808 INFO ]: Abstraction has 108 states and 354 transitions. [2018-06-22 11:10:29,808 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:10:29,808 INFO ]: Start isEmpty. Operand 108 states and 354 transitions. [2018-06-22 11:10:29,812 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:10:29,812 INFO ]: Found error trace [2018-06-22 11:10:29,812 INFO ]: trace histogram [6, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:29,812 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:29,812 INFO ]: Analyzing trace with hash -1921692157, now seen corresponding path program 1 times [2018-06-22 11:10:29,812 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:29,812 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:29,813 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:29,813 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:29,813 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:29,828 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:29,995 INFO ]: Checked inductivity of 55 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-06-22 11:10:29,995 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:29,995 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 11:10:30,001 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:30,044 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:30,049 INFO ]: Computing forward predicates... [2018-06-22 11:10:30,081 INFO ]: Checked inductivity of 55 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-06-22 11:10:30,101 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:30,101 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-22 11:10:30,101 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:10:30,101 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:10:30,101 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:10:30,101 INFO ]: Start difference. First operand 108 states and 354 transitions. Second operand 9 states. [2018-06-22 11:10:30,405 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:30,405 INFO ]: Finished difference Result 119 states and 434 transitions. [2018-06-22 11:10:30,406 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:10:30,406 INFO ]: Start accepts. Automaton has 9 states. Word has length 45 [2018-06-22 11:10:30,406 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:30,409 INFO ]: With dead ends: 119 [2018-06-22 11:10:30,410 INFO ]: Without dead ends: 119 [2018-06-22 11:10:30,412 INFO ]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:10:30,412 INFO ]: Start minimizeSevpa. Operand 119 states. [2018-06-22 11:10:30,435 INFO ]: Finished minimizeSevpa. Reduced states from 119 to 115. [2018-06-22 11:10:30,435 INFO ]: Start removeUnreachable. Operand 115 states. [2018-06-22 11:10:30,437 INFO ]: Finished removeUnreachable. Reduced from 115 states to 115 states and 378 transitions. [2018-06-22 11:10:30,437 INFO ]: Start accepts. Automaton has 115 states and 378 transitions. Word has length 45 [2018-06-22 11:10:30,438 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:30,438 INFO ]: Abstraction has 115 states and 378 transitions. [2018-06-22 11:10:30,438 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:10:30,438 INFO ]: Start isEmpty. Operand 115 states and 378 transitions. [2018-06-22 11:10:30,442 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:10:30,442 INFO ]: Found error trace [2018-06-22 11:10:30,442 INFO ]: trace histogram [6, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:30,442 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:30,443 INFO ]: Analyzing trace with hash -1642726048, now seen corresponding path program 1 times [2018-06-22 11:10:30,443 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:30,443 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:30,443 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:30,443 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:30,443 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:30,483 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:31,077 INFO ]: Checked inductivity of 55 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-06-22 11:10:31,077 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:31,104 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 11:10:31,110 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:31,166 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:31,170 INFO ]: Computing forward predicates... [2018-06-22 11:10:31,239 INFO ]: Checked inductivity of 55 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-06-22 11:10:31,262 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:31,262 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-22 11:10:31,263 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:10:31,263 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:10:31,263 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:10:31,263 INFO ]: Start difference. First operand 115 states and 378 transitions. Second operand 9 states. [2018-06-22 11:10:31,537 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:31,537 INFO ]: Finished difference Result 127 states and 450 transitions. [2018-06-22 11:10:31,538 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:10:31,538 INFO ]: Start accepts. Automaton has 9 states. Word has length 45 [2018-06-22 11:10:31,538 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:31,541 INFO ]: With dead ends: 127 [2018-06-22 11:10:31,541 INFO ]: Without dead ends: 127 [2018-06-22 11:10:31,542 INFO ]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:10:31,542 INFO ]: Start minimizeSevpa. Operand 127 states. [2018-06-22 11:10:31,562 INFO ]: Finished minimizeSevpa. Reduced states from 127 to 113. [2018-06-22 11:10:31,562 INFO ]: Start removeUnreachable. Operand 113 states. [2018-06-22 11:10:31,564 INFO ]: Finished removeUnreachable. Reduced from 113 states to 113 states and 365 transitions. [2018-06-22 11:10:31,564 INFO ]: Start accepts. Automaton has 113 states and 365 transitions. Word has length 45 [2018-06-22 11:10:31,564 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:31,564 INFO ]: Abstraction has 113 states and 365 transitions. [2018-06-22 11:10:31,564 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:10:31,564 INFO ]: Start isEmpty. Operand 113 states and 365 transitions. [2018-06-22 11:10:31,569 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 11:10:31,569 INFO ]: Found error trace [2018-06-22 11:10:31,569 INFO ]: trace histogram [5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:31,569 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:31,569 INFO ]: Analyzing trace with hash -737815522, now seen corresponding path program 1 times [2018-06-22 11:10:31,569 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:31,569 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:31,570 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:31,570 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:31,570 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:31,585 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:32,533 INFO ]: Checked inductivity of 40 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-06-22 11:10:32,533 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:32,533 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 11:10:32,553 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:32,594 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:32,598 INFO ]: Computing forward predicates... [2018-06-22 11:10:33,985 INFO ]: Checked inductivity of 40 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 11:10:34,007 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:34,007 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2018-06-22 11:10:34,007 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:10:34,007 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:10:34,007 INFO ]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:10:34,007 INFO ]: Start difference. First operand 113 states and 365 transitions. Second operand 17 states. [2018-06-22 11:10:34,538 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:34,538 INFO ]: Finished difference Result 131 states and 421 transitions. [2018-06-22 11:10:34,538 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:10:34,538 INFO ]: Start accepts. Automaton has 17 states. Word has length 41 [2018-06-22 11:10:34,538 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:34,541 INFO ]: With dead ends: 131 [2018-06-22 11:10:34,541 INFO ]: Without dead ends: 131 [2018-06-22 11:10:34,542 INFO ]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:10:34,542 INFO ]: Start minimizeSevpa. Operand 131 states. [2018-06-22 11:10:34,564 INFO ]: Finished minimizeSevpa. Reduced states from 131 to 104. [2018-06-22 11:10:34,564 INFO ]: Start removeUnreachable. Operand 104 states. [2018-06-22 11:10:34,565 INFO ]: Finished removeUnreachable. Reduced from 104 states to 104 states and 322 transitions. [2018-06-22 11:10:34,565 INFO ]: Start accepts. Automaton has 104 states and 322 transitions. Word has length 41 [2018-06-22 11:10:34,566 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:34,566 INFO ]: Abstraction has 104 states and 322 transitions. [2018-06-22 11:10:34,566 INFO ]: Interpolant automaton has 17 states. [2018-06-22 11:10:34,566 INFO ]: Start isEmpty. Operand 104 states and 322 transitions. [2018-06-22 11:10:34,570 INFO ]: Finished isEmpty. Found accepting run of length 62 [2018-06-22 11:10:34,570 INFO ]: Found error trace [2018-06-22 11:10:34,570 INFO ]: trace histogram [8, 7, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:34,570 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:34,570 INFO ]: Analyzing trace with hash -1741604139, now seen corresponding path program 1 times [2018-06-22 11:10:34,570 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:34,570 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:34,573 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:34,573 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:34,573 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:34,591 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:34,763 INFO ]: Checked inductivity of 108 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-06-22 11:10:34,763 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:34,763 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) [2018-06-22 11:10:34,779 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:10:34,838 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:34,849 INFO ]: Computing forward predicates... [2018-06-22 11:10:35,941 INFO ]: Checked inductivity of 108 backedges. 66 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-06-22 11:10:35,974 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:35,974 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8] total 10 [2018-06-22 11:10:35,975 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:10:35,975 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:10:35,975 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:10:35,975 INFO ]: Start difference. First operand 104 states and 322 transitions. Second operand 10 states. [2018-06-22 11:10:36,820 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:36,820 INFO ]: Finished difference Result 108 states and 322 transitions. [2018-06-22 11:10:36,820 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:10:36,820 INFO ]: Start accepts. Automaton has 10 states. Word has length 61 [2018-06-22 11:10:36,820 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:36,823 INFO ]: With dead ends: 108 [2018-06-22 11:10:36,823 INFO ]: Without dead ends: 108 [2018-06-22 11:10:36,823 INFO ]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:10:36,823 INFO ]: Start minimizeSevpa. Operand 108 states. [2018-06-22 11:10:36,840 INFO ]: Finished minimizeSevpa. Reduced states from 108 to 95. [2018-06-22 11:10:36,840 INFO ]: Start removeUnreachable. Operand 95 states. [2018-06-22 11:10:36,842 INFO ]: Finished removeUnreachable. Reduced from 95 states to 95 states and 270 transitions. [2018-06-22 11:10:36,842 INFO ]: Start accepts. Automaton has 95 states and 270 transitions. Word has length 61 [2018-06-22 11:10:36,842 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:36,842 INFO ]: Abstraction has 95 states and 270 transitions. [2018-06-22 11:10:36,842 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:10:36,842 INFO ]: Start isEmpty. Operand 95 states and 270 transitions. [2018-06-22 11:10:36,846 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:10:36,846 INFO ]: Found error trace [2018-06-22 11:10:36,846 INFO ]: trace histogram [6, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:36,846 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:36,846 INFO ]: Analyzing trace with hash -531686292, now seen corresponding path program 1 times [2018-06-22 11:10:36,846 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:36,846 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:36,848 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:36,848 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:36,848 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:36,861 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:37,022 INFO ]: Checked inductivity of 55 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-06-22 11:10:37,022 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:37,022 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) [2018-06-22 11:10:37,036 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:10:37,079 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:37,082 INFO ]: Computing forward predicates... [2018-06-22 11:10:37,570 INFO ]: Checked inductivity of 55 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-22 11:10:37,592 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:37,592 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9] total 11 [2018-06-22 11:10:37,593 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:10:37,593 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:10:37,593 INFO ]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:10:37,593 INFO ]: Start difference. First operand 95 states and 270 transitions. Second operand 11 states. [2018-06-22 11:10:38,071 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:38,071 INFO ]: Finished difference Result 99 states and 274 transitions. [2018-06-22 11:10:38,072 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:10:38,072 INFO ]: Start accepts. Automaton has 11 states. Word has length 45 [2018-06-22 11:10:38,072 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:38,074 INFO ]: With dead ends: 99 [2018-06-22 11:10:38,074 INFO ]: Without dead ends: 99 [2018-06-22 11:10:38,074 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:10:38,074 INFO ]: Start minimizeSevpa. Operand 99 states. [2018-06-22 11:10:38,085 INFO ]: Finished minimizeSevpa. Reduced states from 99 to 93. [2018-06-22 11:10:38,086 INFO ]: Start removeUnreachable. Operand 93 states. [2018-06-22 11:10:38,087 INFO ]: Finished removeUnreachable. Reduced from 93 states to 93 states and 262 transitions. [2018-06-22 11:10:38,087 INFO ]: Start accepts. Automaton has 93 states and 262 transitions. Word has length 45 [2018-06-22 11:10:38,087 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:38,087 INFO ]: Abstraction has 93 states and 262 transitions. [2018-06-22 11:10:38,087 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:10:38,088 INFO ]: Start isEmpty. Operand 93 states and 262 transitions. [2018-06-22 11:10:38,091 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:10:38,091 INFO ]: Found error trace [2018-06-22 11:10:38,091 INFO ]: trace histogram [6, 6, 3, 3, 3, 3, 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 11:10:38,091 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:38,091 INFO ]: Analyzing trace with hash 1016492487, now seen corresponding path program 1 times [2018-06-22 11:10:38,091 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:38,091 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:38,092 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:38,092 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:38,092 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:38,102 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:38,453 INFO ]: Checked inductivity of 60 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-06-22 11:10:38,453 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:38,453 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 11:10:38,467 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:38,514 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:38,517 INFO ]: Computing forward predicates... [2018-06-22 11:10:38,784 INFO ]: Checked inductivity of 60 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-06-22 11:10:38,804 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:10:38,804 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2018-06-22 11:10:38,805 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:10:38,805 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:10:38,805 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:10:38,805 INFO ]: Start difference. First operand 93 states and 262 transitions. Second operand 8 states. [2018-06-22 11:10:38,931 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:38,931 INFO ]: Finished difference Result 104 states and 286 transitions. [2018-06-22 11:10:38,931 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:10:38,931 INFO ]: Start accepts. Automaton has 8 states. Word has length 49 [2018-06-22 11:10:38,932 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:38,933 INFO ]: With dead ends: 104 [2018-06-22 11:10:38,933 INFO ]: Without dead ends: 101 [2018-06-22 11:10:38,934 INFO ]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:10:38,934 INFO ]: Start minimizeSevpa. Operand 101 states. [2018-06-22 11:10:38,949 INFO ]: Finished minimizeSevpa. Reduced states from 101 to 93. [2018-06-22 11:10:38,949 INFO ]: Start removeUnreachable. Operand 93 states. [2018-06-22 11:10:38,951 INFO ]: Finished removeUnreachable. Reduced from 93 states to 93 states and 260 transitions. [2018-06-22 11:10:38,951 INFO ]: Start accepts. Automaton has 93 states and 260 transitions. Word has length 49 [2018-06-22 11:10:38,951 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:38,951 INFO ]: Abstraction has 93 states and 260 transitions. [2018-06-22 11:10:38,951 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:10:38,951 INFO ]: Start isEmpty. Operand 93 states and 260 transitions. [2018-06-22 11:10:38,954 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-22 11:10:38,954 INFO ]: Found error trace [2018-06-22 11:10:38,954 INFO ]: trace histogram [9, 7, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:38,954 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:38,954 INFO ]: Analyzing trace with hash 65523945, now seen corresponding path program 1 times [2018-06-22 11:10:38,954 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:38,954 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:38,955 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:38,955 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:38,955 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:38,969 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:39,031 INFO ]: Checked inductivity of 132 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-06-22 11:10:39,031 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:39,031 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 11:10:39,037 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:39,072 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:39,075 INFO ]: Computing forward predicates... [2018-06-22 11:10:39,145 INFO ]: Checked inductivity of 132 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-06-22 11:10:39,166 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:39,166 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 11:10:39,166 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:10:39,166 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:10:39,166 INFO ]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:10:39,166 INFO ]: Start difference. First operand 93 states and 260 transitions. Second operand 13 states. [2018-06-22 11:10:40,255 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:40,255 INFO ]: Finished difference Result 193 states and 555 transitions. [2018-06-22 11:10:40,255 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-22 11:10:40,255 INFO ]: Start accepts. Automaton has 13 states. Word has length 65 [2018-06-22 11:10:40,255 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:40,257 INFO ]: With dead ends: 193 [2018-06-22 11:10:40,257 INFO ]: Without dead ends: 125 [2018-06-22 11:10:40,258 INFO ]: 0 DeclaredPredicates, 89 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2018-06-22 11:10:40,258 INFO ]: Start minimizeSevpa. Operand 125 states. [2018-06-22 11:10:40,283 INFO ]: Finished minimizeSevpa. Reduced states from 125 to 103. [2018-06-22 11:10:40,284 INFO ]: Start removeUnreachable. Operand 103 states. [2018-06-22 11:10:40,285 INFO ]: Finished removeUnreachable. Reduced from 103 states to 103 states and 285 transitions. [2018-06-22 11:10:40,285 INFO ]: Start accepts. Automaton has 103 states and 285 transitions. Word has length 65 [2018-06-22 11:10:40,285 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:40,285 INFO ]: Abstraction has 103 states and 285 transitions. [2018-06-22 11:10:40,285 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:10:40,285 INFO ]: Start isEmpty. Operand 103 states and 285 transitions. [2018-06-22 11:10:40,288 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 11:10:40,288 INFO ]: Found error trace [2018-06-22 11:10:40,288 INFO ]: trace histogram [6, 6, 4, 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] [2018-06-22 11:10:40,288 INFO ]: === Iteration 14 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:40,288 INFO ]: Analyzing trace with hash -1428442791, now seen corresponding path program 2 times [2018-06-22 11:10:40,288 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:40,288 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:40,289 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:40,289 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:40,289 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:40,300 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:40,531 INFO ]: Checked inductivity of 66 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-06-22 11:10:40,532 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:40,532 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 11:10:40,538 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:10:40,581 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:10:40,581 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:40,584 INFO ]: Computing forward predicates... [2018-06-22 11:10:40,733 INFO ]: Checked inductivity of 66 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-06-22 11:10:40,758 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:40,758 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 14 [2018-06-22 11:10:40,758 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:10:40,758 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:10:40,758 INFO ]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:10:40,758 INFO ]: Start difference. First operand 103 states and 285 transitions. Second operand 14 states. [2018-06-22 11:10:41,407 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:41,408 INFO ]: Finished difference Result 133 states and 352 transitions. [2018-06-22 11:10:41,427 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 11:10:41,427 INFO ]: Start accepts. Automaton has 14 states. Word has length 49 [2018-06-22 11:10:41,427 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:41,429 INFO ]: With dead ends: 133 [2018-06-22 11:10:41,429 INFO ]: Without dead ends: 113 [2018-06-22 11:10:41,429 INFO ]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2018-06-22 11:10:41,430 INFO ]: Start minimizeSevpa. Operand 113 states. [2018-06-22 11:10:41,445 INFO ]: Finished minimizeSevpa. Reduced states from 113 to 107. [2018-06-22 11:10:41,445 INFO ]: Start removeUnreachable. Operand 107 states. [2018-06-22 11:10:41,447 INFO ]: Finished removeUnreachable. Reduced from 107 states to 107 states and 287 transitions. [2018-06-22 11:10:41,447 INFO ]: Start accepts. Automaton has 107 states and 287 transitions. Word has length 49 [2018-06-22 11:10:41,447 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:41,447 INFO ]: Abstraction has 107 states and 287 transitions. [2018-06-22 11:10:41,447 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:10:41,447 INFO ]: Start isEmpty. Operand 107 states and 287 transitions. [2018-06-22 11:10:41,451 INFO ]: Finished isEmpty. Found accepting run of length 70 [2018-06-22 11:10:41,451 INFO ]: Found error trace [2018-06-22 11:10:41,451 INFO ]: trace histogram [9, 8, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:41,451 INFO ]: === Iteration 15 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:41,451 INFO ]: Analyzing trace with hash -390893876, now seen corresponding path program 1 times [2018-06-22 11:10:41,451 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:41,451 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:41,452 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:41,452 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:10:41,452 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:41,475 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:41,783 INFO ]: Checked inductivity of 144 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-06-22 11:10:41,783 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:41,783 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 11:10:41,789 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:41,835 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:41,840 INFO ]: Computing forward predicates... [2018-06-22 11:10:42,369 INFO ]: Checked inductivity of 144 backedges. 56 proven. 34 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-06-22 11:10:42,403 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:42,403 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2018-06-22 11:10:42,404 INFO ]: Interpolant automaton has 25 states [2018-06-22 11:10:42,404 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 11:10:42,404 INFO ]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2018-06-22 11:10:42,404 INFO ]: Start difference. First operand 107 states and 287 transitions. Second operand 25 states. [2018-06-22 11:10:45,552 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:45,552 INFO ]: Finished difference Result 159 states and 528 transitions. [2018-06-22 11:10:45,553 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-22 11:10:45,553 INFO ]: Start accepts. Automaton has 25 states. Word has length 69 [2018-06-22 11:10:45,553 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:45,555 INFO ]: With dead ends: 159 [2018-06-22 11:10:45,555 INFO ]: Without dead ends: 159 [2018-06-22 11:10:45,555 INFO ]: 0 DeclaredPredicates, 95 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 11:10:45,555 INFO ]: Start minimizeSevpa. Operand 159 states. [2018-06-22 11:10:45,579 INFO ]: Finished minimizeSevpa. Reduced states from 159 to 124. [2018-06-22 11:10:45,579 INFO ]: Start removeUnreachable. Operand 124 states. [2018-06-22 11:10:45,582 INFO ]: Finished removeUnreachable. Reduced from 124 states to 124 states and 375 transitions. [2018-06-22 11:10:45,582 INFO ]: Start accepts. Automaton has 124 states and 375 transitions. Word has length 69 [2018-06-22 11:10:45,582 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:45,582 INFO ]: Abstraction has 124 states and 375 transitions. [2018-06-22 11:10:45,582 INFO ]: Interpolant automaton has 25 states. [2018-06-22 11:10:45,582 INFO ]: Start isEmpty. Operand 124 states and 375 transitions. [2018-06-22 11:10:45,586 INFO ]: Finished isEmpty. Found accepting run of length 74 [2018-06-22 11:10:45,586 INFO ]: Found error trace [2018-06-22 11:10:45,586 INFO ]: trace histogram [10, 8, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:45,586 INFO ]: === Iteration 16 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:45,586 INFO ]: Analyzing trace with hash 2056765698, now seen corresponding path program 1 times [2018-06-22 11:10:45,586 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:45,586 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:45,587 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:45,587 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:45,587 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:45,601 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:45,789 INFO ]: Checked inductivity of 174 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-06-22 11:10:45,789 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:45,789 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 11:10:45,795 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:45,842 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:45,846 INFO ]: Computing forward predicates... [2018-06-22 11:10:46,004 INFO ]: Checked inductivity of 174 backedges. 64 proven. 15 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-06-22 11:10:46,024 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:46,024 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 18 [2018-06-22 11:10:46,025 INFO ]: Interpolant automaton has 18 states [2018-06-22 11:10:46,025 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 11:10:46,025 INFO ]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:10:46,025 INFO ]: Start difference. First operand 124 states and 375 transitions. Second operand 18 states. [2018-06-22 11:10:47,159 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:47,159 INFO ]: Finished difference Result 154 states and 479 transitions. [2018-06-22 11:10:47,159 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-06-22 11:10:47,159 INFO ]: Start accepts. Automaton has 18 states. Word has length 73 [2018-06-22 11:10:47,159 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:47,162 INFO ]: With dead ends: 154 [2018-06-22 11:10:47,162 INFO ]: Without dead ends: 154 [2018-06-22 11:10:47,163 INFO ]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2018-06-22 11:10:47,163 INFO ]: Start minimizeSevpa. Operand 154 states. [2018-06-22 11:10:47,189 INFO ]: Finished minimizeSevpa. Reduced states from 154 to 142. [2018-06-22 11:10:47,190 INFO ]: Start removeUnreachable. Operand 142 states. [2018-06-22 11:10:47,193 INFO ]: Finished removeUnreachable. Reduced from 142 states to 142 states and 445 transitions. [2018-06-22 11:10:47,194 INFO ]: Start accepts. Automaton has 142 states and 445 transitions. Word has length 73 [2018-06-22 11:10:47,194 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:47,194 INFO ]: Abstraction has 142 states and 445 transitions. [2018-06-22 11:10:47,194 INFO ]: Interpolant automaton has 18 states. [2018-06-22 11:10:47,194 INFO ]: Start isEmpty. Operand 142 states and 445 transitions. [2018-06-22 11:10:47,199 INFO ]: Finished isEmpty. Found accepting run of length 86 [2018-06-22 11:10:47,199 INFO ]: Found error trace [2018-06-22 11:10:47,199 INFO ]: trace histogram [11, 10, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:47,199 INFO ]: === Iteration 17 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:47,199 INFO ]: Analyzing trace with hash -1067366504, now seen corresponding path program 1 times [2018-06-22 11:10:47,199 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:47,199 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:47,200 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:47,200 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:47,200 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:47,224 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:48,123 INFO ]: Checked inductivity of 227 backedges. 22 proven. 45 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-06-22 11:10:48,123 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:48,123 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 11:10:48,128 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:48,183 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:48,187 INFO ]: Computing forward predicates... [2018-06-22 11:10:48,269 INFO ]: Checked inductivity of 227 backedges. 93 proven. 29 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-06-22 11:10:48,295 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:48,295 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 17 [2018-06-22 11:10:48,295 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:10:48,295 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:10:48,295 INFO ]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:10:48,295 INFO ]: Start difference. First operand 142 states and 445 transitions. Second operand 17 states. [2018-06-22 11:10:49,315 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:49,315 INFO ]: Finished difference Result 209 states and 790 transitions. [2018-06-22 11:10:49,320 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-22 11:10:49,320 INFO ]: Start accepts. Automaton has 17 states. Word has length 85 [2018-06-22 11:10:49,320 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:49,324 INFO ]: With dead ends: 209 [2018-06-22 11:10:49,324 INFO ]: Without dead ends: 205 [2018-06-22 11:10:49,325 INFO ]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2018-06-22 11:10:49,326 INFO ]: Start minimizeSevpa. Operand 205 states. [2018-06-22 11:10:49,366 INFO ]: Finished minimizeSevpa. Reduced states from 205 to 186. [2018-06-22 11:10:49,366 INFO ]: Start removeUnreachable. Operand 186 states. [2018-06-22 11:10:49,368 INFO ]: Finished removeUnreachable. Reduced from 186 states to 186 states and 704 transitions. [2018-06-22 11:10:49,368 INFO ]: Start accepts. Automaton has 186 states and 704 transitions. Word has length 85 [2018-06-22 11:10:49,369 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:49,369 INFO ]: Abstraction has 186 states and 704 transitions. [2018-06-22 11:10:49,369 INFO ]: Interpolant automaton has 17 states. [2018-06-22 11:10:49,369 INFO ]: Start isEmpty. Operand 186 states and 704 transitions. [2018-06-22 11:10:49,374 INFO ]: Finished isEmpty. Found accepting run of length 74 [2018-06-22 11:10:49,375 INFO ]: Found error trace [2018-06-22 11:10:49,375 INFO ]: trace histogram [10, 8, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:49,375 INFO ]: === Iteration 18 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:49,375 INFO ]: Analyzing trace with hash 847989658, now seen corresponding path program 1 times [2018-06-22 11:10:49,375 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:49,375 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:49,375 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:49,375 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:49,375 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:49,392 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:49,980 INFO ]: Checked inductivity of 171 backedges. 2 proven. 66 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-06-22 11:10:49,980 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:49,980 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 11:10:49,985 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:50,027 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:50,030 INFO ]: Computing forward predicates... [2018-06-22 11:10:50,174 INFO ]: Checked inductivity of 171 backedges. 64 proven. 42 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-06-22 11:10:50,194 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:50,194 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2018-06-22 11:10:50,194 INFO ]: Interpolant automaton has 19 states [2018-06-22 11:10:50,194 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 11:10:50,194 INFO ]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:10:50,195 INFO ]: Start difference. First operand 186 states and 704 transitions. Second operand 19 states. [2018-06-22 11:10:51,248 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:51,248 INFO ]: Finished difference Result 311 states and 1483 transitions. [2018-06-22 11:10:51,248 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-06-22 11:10:51,248 INFO ]: Start accepts. Automaton has 19 states. Word has length 73 [2018-06-22 11:10:51,249 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:51,254 INFO ]: With dead ends: 311 [2018-06-22 11:10:51,254 INFO ]: Without dead ends: 305 [2018-06-22 11:10:51,254 INFO ]: 0 DeclaredPredicates, 108 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=870, Unknown=0, NotChecked=0, Total=992 [2018-06-22 11:10:51,254 INFO ]: Start minimizeSevpa. Operand 305 states. [2018-06-22 11:10:51,343 INFO ]: Finished minimizeSevpa. Reduced states from 305 to 221. [2018-06-22 11:10:51,343 INFO ]: Start removeUnreachable. Operand 221 states. [2018-06-22 11:10:51,347 INFO ]: Finished removeUnreachable. Reduced from 221 states to 221 states and 926 transitions. [2018-06-22 11:10:51,347 INFO ]: Start accepts. Automaton has 221 states and 926 transitions. Word has length 73 [2018-06-22 11:10:51,347 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:51,347 INFO ]: Abstraction has 221 states and 926 transitions. [2018-06-22 11:10:51,347 INFO ]: Interpolant automaton has 19 states. [2018-06-22 11:10:51,347 INFO ]: Start isEmpty. Operand 221 states and 926 transitions. [2018-06-22 11:10:51,355 INFO ]: Finished isEmpty. Found accepting run of length 86 [2018-06-22 11:10:51,355 INFO ]: Found error trace [2018-06-22 11:10:51,355 INFO ]: trace histogram [11, 10, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:51,355 INFO ]: === Iteration 19 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:51,355 INFO ]: Analyzing trace with hash 1474424688, now seen corresponding path program 1 times [2018-06-22 11:10:51,355 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:51,355 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:51,357 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:51,357 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:51,357 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:51,378 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:51,521 INFO ]: Checked inductivity of 225 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-06-22 11:10:51,521 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:10:51,521 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:10:51,521 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:10:51,521 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:10:51,521 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:10:51,522 INFO ]: Start difference. First operand 221 states and 926 transitions. Second operand 4 states. [2018-06-22 11:10:52,031 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:52,031 INFO ]: Finished difference Result 229 states and 925 transitions. [2018-06-22 11:10:52,031 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:10:52,031 INFO ]: Start accepts. Automaton has 4 states. Word has length 85 [2018-06-22 11:10:52,031 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:52,033 INFO ]: With dead ends: 229 [2018-06-22 11:10:52,033 INFO ]: Without dead ends: 209 [2018-06-22 11:10:52,034 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:10:52,034 INFO ]: Start minimizeSevpa. Operand 209 states. [2018-06-22 11:10:52,081 INFO ]: Finished minimizeSevpa. Reduced states from 209 to 197. [2018-06-22 11:10:52,082 INFO ]: Start removeUnreachable. Operand 197 states. [2018-06-22 11:10:52,085 INFO ]: Finished removeUnreachable. Reduced from 197 states to 197 states and 799 transitions. [2018-06-22 11:10:52,085 INFO ]: Start accepts. Automaton has 197 states and 799 transitions. Word has length 85 [2018-06-22 11:10:52,085 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:52,085 INFO ]: Abstraction has 197 states and 799 transitions. [2018-06-22 11:10:52,085 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:10:52,085 INFO ]: Start isEmpty. Operand 197 states and 799 transitions. [2018-06-22 11:10:52,090 INFO ]: Finished isEmpty. Found accepting run of length 74 [2018-06-22 11:10:52,091 INFO ]: Found error trace [2018-06-22 11:10:52,091 INFO ]: trace histogram [10, 8, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:52,091 INFO ]: === Iteration 20 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:52,091 INFO ]: Analyzing trace with hash -439730127, now seen corresponding path program 1 times [2018-06-22 11:10:52,091 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:52,091 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:52,091 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:52,091 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:52,091 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:52,114 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:53,366 INFO ]: Checked inductivity of 171 backedges. 6 proven. 62 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-06-22 11:10:53,366 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:53,366 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 11:10:53,372 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:53,411 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:53,415 INFO ]: Computing forward predicates... [2018-06-22 11:10:53,579 INFO ]: Checked inductivity of 171 backedges. 64 proven. 42 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-06-22 11:10:53,605 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:53,605 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 18 [2018-06-22 11:10:53,606 INFO ]: Interpolant automaton has 18 states [2018-06-22 11:10:53,606 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 11:10:53,606 INFO ]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:10:53,606 INFO ]: Start difference. First operand 197 states and 799 transitions. Second operand 18 states. [2018-06-22 11:10:55,051 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:55,051 INFO ]: Finished difference Result 247 states and 1140 transitions. [2018-06-22 11:10:55,052 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-06-22 11:10:55,052 INFO ]: Start accepts. Automaton has 18 states. Word has length 73 [2018-06-22 11:10:55,052 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:55,055 INFO ]: With dead ends: 247 [2018-06-22 11:10:55,055 INFO ]: Without dead ends: 247 [2018-06-22 11:10:55,055 INFO ]: 0 DeclaredPredicates, 104 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:10:55,055 INFO ]: Start minimizeSevpa. Operand 247 states. [2018-06-22 11:10:55,119 INFO ]: Finished minimizeSevpa. Reduced states from 247 to 196. [2018-06-22 11:10:55,119 INFO ]: Start removeUnreachable. Operand 196 states. [2018-06-22 11:10:55,122 INFO ]: Finished removeUnreachable. Reduced from 196 states to 196 states and 845 transitions. [2018-06-22 11:10:55,122 INFO ]: Start accepts. Automaton has 196 states and 845 transitions. Word has length 73 [2018-06-22 11:10:55,122 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:55,122 INFO ]: Abstraction has 196 states and 845 transitions. [2018-06-22 11:10:55,123 INFO ]: Interpolant automaton has 18 states. [2018-06-22 11:10:55,123 INFO ]: Start isEmpty. Operand 196 states and 845 transitions. [2018-06-22 11:10:55,127 INFO ]: Finished isEmpty. Found accepting run of length 86 [2018-06-22 11:10:55,127 INFO ]: Found error trace [2018-06-22 11:10:55,127 INFO ]: trace histogram [11, 10, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:55,128 INFO ]: === Iteration 21 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:55,129 INFO ]: Analyzing trace with hash -1007595216, now seen corresponding path program 2 times [2018-06-22 11:10:55,129 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:55,129 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:55,129 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:55,129 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:55,129 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:55,151 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:55,370 INFO ]: Checked inductivity of 225 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-06-22 11:10:55,370 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:55,370 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 11:10:55,378 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:10:55,432 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:10:55,432 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:55,435 INFO ]: Computing forward predicates... [2018-06-22 11:10:55,490 INFO ]: Checked inductivity of 225 backedges. 85 proven. 13 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-06-22 11:10:55,522 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:55,522 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2018-06-22 11:10:55,523 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:10:55,523 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:10:55,523 INFO ]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:10:55,523 INFO ]: Start difference. First operand 196 states and 845 transitions. Second operand 14 states. [2018-06-22 11:10:56,496 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:56,496 INFO ]: Finished difference Result 244 states and 1127 transitions. [2018-06-22 11:10:56,496 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:10:56,496 INFO ]: Start accepts. Automaton has 14 states. Word has length 85 [2018-06-22 11:10:56,496 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:56,499 INFO ]: With dead ends: 244 [2018-06-22 11:10:56,499 INFO ]: Without dead ends: 229 [2018-06-22 11:10:56,499 INFO ]: 0 DeclaredPredicates, 104 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:10:56,499 INFO ]: Start minimizeSevpa. Operand 229 states. [2018-06-22 11:10:56,553 INFO ]: Finished minimizeSevpa. Reduced states from 229 to 202. [2018-06-22 11:10:56,553 INFO ]: Start removeUnreachable. Operand 202 states. [2018-06-22 11:10:56,556 INFO ]: Finished removeUnreachable. Reduced from 202 states to 202 states and 862 transitions. [2018-06-22 11:10:56,556 INFO ]: Start accepts. Automaton has 202 states and 862 transitions. Word has length 85 [2018-06-22 11:10:56,556 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:56,556 INFO ]: Abstraction has 202 states and 862 transitions. [2018-06-22 11:10:56,556 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:10:56,556 INFO ]: Start isEmpty. Operand 202 states and 862 transitions. [2018-06-22 11:10:56,561 INFO ]: Finished isEmpty. Found accepting run of length 90 [2018-06-22 11:10:56,561 INFO ]: Found error trace [2018-06-22 11:10:56,561 INFO ]: trace histogram [12, 10, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:56,561 INFO ]: === Iteration 22 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:56,561 INFO ]: Analyzing trace with hash -1476972995, now seen corresponding path program 1 times [2018-06-22 11:10:56,561 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:56,561 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:56,562 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:56,562 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:10:56,562 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:56,580 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:56,692 INFO ]: Checked inductivity of 260 backedges. 22 proven. 54 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-06-22 11:10:56,692 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:56,692 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 11:10:56,698 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:56,755 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:56,758 INFO ]: Computing forward predicates... [2018-06-22 11:10:56,861 INFO ]: Checked inductivity of 260 backedges. 96 proven. 42 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-06-22 11:10:56,887 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:56,887 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2018-06-22 11:10:56,887 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:10:56,888 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:10:56,888 INFO ]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:10:56,888 INFO ]: Start difference. First operand 202 states and 862 transitions. Second operand 14 states. [2018-06-22 11:10:57,360 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:57,360 INFO ]: Finished difference Result 169 states and 570 transitions. [2018-06-22 11:10:57,363 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 11:10:57,363 INFO ]: Start accepts. Automaton has 14 states. Word has length 89 [2018-06-22 11:10:57,363 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:57,364 INFO ]: With dead ends: 169 [2018-06-22 11:10:57,365 INFO ]: Without dead ends: 168 [2018-06-22 11:10:57,365 INFO ]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:10:57,365 INFO ]: Start minimizeSevpa. Operand 168 states. [2018-06-22 11:10:57,387 INFO ]: Finished minimizeSevpa. Reduced states from 168 to 156. [2018-06-22 11:10:57,387 INFO ]: Start removeUnreachable. Operand 156 states. [2018-06-22 11:10:57,390 INFO ]: Finished removeUnreachable. Reduced from 156 states to 156 states and 478 transitions. [2018-06-22 11:10:57,390 INFO ]: Start accepts. Automaton has 156 states and 478 transitions. Word has length 89 [2018-06-22 11:10:57,395 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:57,395 INFO ]: Abstraction has 156 states and 478 transitions. [2018-06-22 11:10:57,395 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:10:57,395 INFO ]: Start isEmpty. Operand 156 states and 478 transitions. [2018-06-22 11:10:57,398 INFO ]: Finished isEmpty. Found accepting run of length 78 [2018-06-22 11:10:57,398 INFO ]: Found error trace [2018-06-22 11:10:57,398 INFO ]: trace histogram [10, 9, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:57,398 INFO ]: === Iteration 23 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:57,399 INFO ]: Analyzing trace with hash 1684941959, now seen corresponding path program 2 times [2018-06-22 11:10:57,399 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:57,399 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:57,400 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:57,400 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:10:57,400 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:57,416 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:57,690 INFO ]: Checked inductivity of 188 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-06-22 11:10:57,690 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:57,690 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 11:10:57,696 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:10:57,742 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:10:57,743 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:57,745 INFO ]: Computing forward predicates... [2018-06-22 11:10:57,794 INFO ]: Checked inductivity of 188 backedges. 71 proven. 19 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-06-22 11:10:57,813 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:57,813 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-06-22 11:10:57,814 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:10:57,814 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:10:57,814 INFO ]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:10:57,814 INFO ]: Start difference. First operand 156 states and 478 transitions. Second operand 15 states. [2018-06-22 11:10:58,715 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:10:58,715 INFO ]: Finished difference Result 182 states and 601 transitions. [2018-06-22 11:10:58,718 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:10:58,718 INFO ]: Start accepts. Automaton has 15 states. Word has length 77 [2018-06-22 11:10:58,718 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:10:58,721 INFO ]: With dead ends: 182 [2018-06-22 11:10:58,721 INFO ]: Without dead ends: 182 [2018-06-22 11:10:58,722 INFO ]: 0 DeclaredPredicates, 100 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:10:58,722 INFO ]: Start minimizeSevpa. Operand 182 states. [2018-06-22 11:10:58,747 INFO ]: Finished minimizeSevpa. Reduced states from 182 to 142. [2018-06-22 11:10:58,747 INFO ]: Start removeUnreachable. Operand 142 states. [2018-06-22 11:10:58,750 INFO ]: Finished removeUnreachable. Reduced from 142 states to 142 states and 392 transitions. [2018-06-22 11:10:58,750 INFO ]: Start accepts. Automaton has 142 states and 392 transitions. Word has length 77 [2018-06-22 11:10:58,750 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:10:58,750 INFO ]: Abstraction has 142 states and 392 transitions. [2018-06-22 11:10:58,750 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:10:58,750 INFO ]: Start isEmpty. Operand 142 states and 392 transitions. [2018-06-22 11:10:58,755 INFO ]: Finished isEmpty. Found accepting run of length 94 [2018-06-22 11:10:58,755 INFO ]: Found error trace [2018-06-22 11:10:58,756 INFO ]: trace histogram [12, 11, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:10:58,756 INFO ]: === Iteration 24 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:10:58,756 INFO ]: Analyzing trace with hash -850084565, now seen corresponding path program 3 times [2018-06-22 11:10:58,756 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:10:58,756 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:10:58,757 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:58,757 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:10:58,757 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:10:58,778 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:59,188 INFO ]: Checked inductivity of 278 backedges. 30 proven. 53 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-06-22 11:10:59,188 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:10:59,188 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 11:10:59,194 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:10:59,261 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 11:10:59,261 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:10:59,264 INFO ]: Computing forward predicates... [2018-06-22 11:10:59,618 INFO ]: Checked inductivity of 278 backedges. 104 proven. 35 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-06-22 11:10:59,638 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:10:59,639 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2018-06-22 11:10:59,639 INFO ]: Interpolant automaton has 18 states [2018-06-22 11:10:59,639 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 11:10:59,639 INFO ]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:10:59,639 INFO ]: Start difference. First operand 142 states and 392 transitions. Second operand 18 states. [2018-06-22 11:11:00,396 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:00,396 INFO ]: Finished difference Result 172 states and 541 transitions. [2018-06-22 11:11:00,397 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-22 11:11:00,397 INFO ]: Start accepts. Automaton has 18 states. Word has length 93 [2018-06-22 11:11:00,397 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:00,398 INFO ]: With dead ends: 172 [2018-06-22 11:11:00,398 INFO ]: Without dead ends: 172 [2018-06-22 11:11:00,399 INFO ]: 0 DeclaredPredicates, 122 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2018-06-22 11:11:00,399 INFO ]: Start minimizeSevpa. Operand 172 states. [2018-06-22 11:11:00,419 INFO ]: Finished minimizeSevpa. Reduced states from 172 to 152. [2018-06-22 11:11:00,419 INFO ]: Start removeUnreachable. Operand 152 states. [2018-06-22 11:11:00,421 INFO ]: Finished removeUnreachable. Reduced from 152 states to 152 states and 456 transitions. [2018-06-22 11:11:00,421 INFO ]: Start accepts. Automaton has 152 states and 456 transitions. Word has length 93 [2018-06-22 11:11:00,421 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:00,421 INFO ]: Abstraction has 152 states and 456 transitions. [2018-06-22 11:11:00,421 INFO ]: Interpolant automaton has 18 states. [2018-06-22 11:11:00,421 INFO ]: Start isEmpty. Operand 152 states and 456 transitions. [2018-06-22 11:11:00,423 INFO ]: Finished isEmpty. Found accepting run of length 98 [2018-06-22 11:11:00,423 INFO ]: Found error trace [2018-06-22 11:11:00,423 INFO ]: trace histogram [13, 11, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:00,423 INFO ]: === Iteration 25 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:00,423 INFO ]: Analyzing trace with hash 1933136109, now seen corresponding path program 4 times [2018-06-22 11:11:00,423 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:00,423 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:00,424 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:00,424 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:11:00,424 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:00,443 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:00,641 INFO ]: Checked inductivity of 315 backedges. 32 proven. 73 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-06-22 11:11:00,641 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:11:00,641 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 11:11:00,646 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:11:00,723 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:11:00,723 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:00,726 INFO ]: Computing forward predicates... [2018-06-22 11:11:00,837 INFO ]: Checked inductivity of 315 backedges. 109 proven. 53 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-06-22 11:11:00,858 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:11:00,858 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 18 [2018-06-22 11:11:00,859 INFO ]: Interpolant automaton has 18 states [2018-06-22 11:11:00,859 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 11:11:00,859 INFO ]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:11:00,859 INFO ]: Start difference. First operand 152 states and 456 transitions. Second operand 18 states. [2018-06-22 11:11:01,809 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:01,809 INFO ]: Finished difference Result 163 states and 509 transitions. [2018-06-22 11:11:01,809 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-06-22 11:11:01,809 INFO ]: Start accepts. Automaton has 18 states. Word has length 97 [2018-06-22 11:11:01,809 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:01,811 INFO ]: With dead ends: 163 [2018-06-22 11:11:01,811 INFO ]: Without dead ends: 163 [2018-06-22 11:11:01,811 INFO ]: 0 DeclaredPredicates, 129 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2018-06-22 11:11:01,811 INFO ]: Start minimizeSevpa. Operand 163 states. [2018-06-22 11:11:01,827 INFO ]: Finished minimizeSevpa. Reduced states from 163 to 140. [2018-06-22 11:11:01,827 INFO ]: Start removeUnreachable. Operand 140 states. [2018-06-22 11:11:01,829 INFO ]: Finished removeUnreachable. Reduced from 140 states to 140 states and 406 transitions. [2018-06-22 11:11:01,829 INFO ]: Start accepts. Automaton has 140 states and 406 transitions. Word has length 97 [2018-06-22 11:11:01,829 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:01,829 INFO ]: Abstraction has 140 states and 406 transitions. [2018-06-22 11:11:01,829 INFO ]: Interpolant automaton has 18 states. [2018-06-22 11:11:01,829 INFO ]: Start isEmpty. Operand 140 states and 406 transitions. [2018-06-22 11:11:01,831 INFO ]: Finished isEmpty. Found accepting run of length 98 [2018-06-22 11:11:01,831 INFO ]: Found error trace [2018-06-22 11:11:01,831 INFO ]: trace histogram [13, 11, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:01,832 INFO ]: === Iteration 26 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:01,832 INFO ]: Analyzing trace with hash -1761845255, now seen corresponding path program 1 times [2018-06-22 11:11:01,832 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:01,832 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:01,832 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:01,832 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:11:01,832 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:01,858 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:01,973 INFO ]: Checked inductivity of 314 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-06-22 11:11:01,973 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:11:01,973 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 11:11:01,979 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:02,036 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:02,040 INFO ]: Computing forward predicates... [2018-06-22 11:11:02,198 INFO ]: Checked inductivity of 314 backedges. 107 proven. 50 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-06-22 11:11:02,222 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:11:02,236 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2018-06-22 11:11:02,236 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:11:02,236 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:11:02,236 INFO ]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:11:02,237 INFO ]: Start difference. First operand 140 states and 406 transitions. Second operand 14 states. [2018-06-22 11:11:02,965 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:02,965 INFO ]: Finished difference Result 111 states and 271 transitions. [2018-06-22 11:11:02,970 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:11:02,970 INFO ]: Start accepts. Automaton has 14 states. Word has length 97 [2018-06-22 11:11:02,970 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:02,971 INFO ]: With dead ends: 111 [2018-06-22 11:11:02,971 INFO ]: Without dead ends: 110 [2018-06-22 11:11:02,971 INFO ]: 0 DeclaredPredicates, 108 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:11:02,971 INFO ]: Start minimizeSevpa. Operand 110 states. [2018-06-22 11:11:02,981 INFO ]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-06-22 11:11:02,982 INFO ]: Start removeUnreachable. Operand 110 states. [2018-06-22 11:11:02,983 INFO ]: Finished removeUnreachable. Reduced from 110 states to 110 states and 269 transitions. [2018-06-22 11:11:02,983 INFO ]: Start accepts. Automaton has 110 states and 269 transitions. Word has length 97 [2018-06-22 11:11:02,983 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:02,983 INFO ]: Abstraction has 110 states and 269 transitions. [2018-06-22 11:11:02,983 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:11:02,983 INFO ]: Start isEmpty. Operand 110 states and 269 transitions. [2018-06-22 11:11:02,986 INFO ]: Finished isEmpty. Found accepting run of length 98 [2018-06-22 11:11:02,986 INFO ]: Found error trace [2018-06-22 11:11:02,986 INFO ]: trace histogram [13, 11, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:02,986 INFO ]: === Iteration 27 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:02,986 INFO ]: Analyzing trace with hash 339185146, now seen corresponding path program 3 times [2018-06-22 11:11:02,986 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:02,986 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:02,986 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:02,986 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:02,986 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:03,027 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:03,496 WARN ]: Spent 242.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-06-22 11:11:04,856 INFO ]: Checked inductivity of 318 backedges. 1 proven. 101 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-06-22 11:11:04,856 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:11:04,856 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) [2018-06-22 11:11:04,869 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:11:04,930 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-06-22 11:11:04,930 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:04,935 INFO ]: Computing forward predicates... [2018-06-22 11:11:06,449 INFO ]: Checked inductivity of 318 backedges. 88 proven. 87 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-06-22 11:11:06,481 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:11:06,481 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 29 [2018-06-22 11:11:06,481 INFO ]: Interpolant automaton has 29 states [2018-06-22 11:11:06,481 INFO ]: Constructing interpolant automaton starting with 29 interpolants. [2018-06-22 11:11:06,481 INFO ]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2018-06-22 11:11:06,482 INFO ]: Start difference. First operand 110 states and 269 transitions. Second operand 29 states. [2018-06-22 11:11:08,586 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:08,586 INFO ]: Finished difference Result 173 states and 532 transitions. [2018-06-22 11:11:08,586 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-22 11:11:08,586 INFO ]: Start accepts. Automaton has 29 states. Word has length 97 [2018-06-22 11:11:08,587 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:08,588 INFO ]: With dead ends: 173 [2018-06-22 11:11:08,588 INFO ]: Without dead ends: 173 [2018-06-22 11:11:08,588 INFO ]: 0 DeclaredPredicates, 132 GetRequests, 91 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2018-06-22 11:11:08,588 INFO ]: Start minimizeSevpa. Operand 173 states. [2018-06-22 11:11:08,597 INFO ]: Finished minimizeSevpa. Reduced states from 173 to 120. [2018-06-22 11:11:08,597 INFO ]: Start removeUnreachable. Operand 120 states. [2018-06-22 11:11:08,598 INFO ]: Finished removeUnreachable. Reduced from 120 states to 120 states and 307 transitions. [2018-06-22 11:11:08,598 INFO ]: Start accepts. Automaton has 120 states and 307 transitions. Word has length 97 [2018-06-22 11:11:08,598 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:08,598 INFO ]: Abstraction has 120 states and 307 transitions. [2018-06-22 11:11:08,598 INFO ]: Interpolant automaton has 29 states. [2018-06-22 11:11:08,598 INFO ]: Start isEmpty. Operand 120 states and 307 transitions. [2018-06-22 11:11:08,599 INFO ]: Finished isEmpty. Found accepting run of length 98 [2018-06-22 11:11:08,599 INFO ]: Found error trace [2018-06-22 11:11:08,600 INFO ]: trace histogram [13, 11, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:08,600 INFO ]: === Iteration 28 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:08,600 INFO ]: Analyzing trace with hash -405848466, now seen corresponding path program 2 times [2018-06-22 11:11:08,600 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:08,600 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:08,600 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:08,600 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:11:08,600 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:08,628 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:09,090 INFO ]: Checked inductivity of 322 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-06-22 11:11:09,090 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:11:09,090 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 11:11:09,096 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:11:09,152 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:11:09,152 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:09,155 INFO ]: Computing forward predicates... [2018-06-22 11:11:09,301 INFO ]: Checked inductivity of 322 backedges. 94 proven. 36 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-06-22 11:11:09,320 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:11:09,320 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 22 [2018-06-22 11:11:09,320 INFO ]: Interpolant automaton has 22 states [2018-06-22 11:11:09,320 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-22 11:11:09,321 INFO ]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2018-06-22 11:11:09,321 INFO ]: Start difference. First operand 120 states and 307 transitions. Second operand 22 states. [2018-06-22 11:11:10,769 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:10,769 INFO ]: Finished difference Result 196 states and 643 transitions. [2018-06-22 11:11:10,769 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-06-22 11:11:10,769 INFO ]: Start accepts. Automaton has 22 states. Word has length 97 [2018-06-22 11:11:10,770 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:10,771 INFO ]: With dead ends: 196 [2018-06-22 11:11:10,771 INFO ]: Without dead ends: 190 [2018-06-22 11:11:10,772 INFO ]: 0 DeclaredPredicates, 142 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=245, Invalid=1561, Unknown=0, NotChecked=0, Total=1806 [2018-06-22 11:11:10,772 INFO ]: Start minimizeSevpa. Operand 190 states. [2018-06-22 11:11:10,802 INFO ]: Finished minimizeSevpa. Reduced states from 190 to 150. [2018-06-22 11:11:10,802 INFO ]: Start removeUnreachable. Operand 150 states. [2018-06-22 11:11:10,811 INFO ]: Finished removeUnreachable. Reduced from 150 states to 150 states and 451 transitions. [2018-06-22 11:11:10,812 INFO ]: Start accepts. Automaton has 150 states and 451 transitions. Word has length 97 [2018-06-22 11:11:10,812 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:10,812 INFO ]: Abstraction has 150 states and 451 transitions. [2018-06-22 11:11:10,812 INFO ]: Interpolant automaton has 22 states. [2018-06-22 11:11:10,812 INFO ]: Start isEmpty. Operand 150 states and 451 transitions. [2018-06-22 11:11:10,814 INFO ]: Finished isEmpty. Found accepting run of length 114 [2018-06-22 11:11:10,814 INFO ]: Found error trace [2018-06-22 11:11:10,815 INFO ]: trace histogram [15, 13, 8, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:10,815 INFO ]: === Iteration 29 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:10,815 INFO ]: Analyzing trace with hash 1945093714, now seen corresponding path program 1 times [2018-06-22 11:11:10,815 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:10,815 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:10,815 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:10,815 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:11:10,815 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:10,834 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:11,557 INFO ]: Checked inductivity of 433 backedges. 23 proven. 40 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2018-06-22 11:11:11,557 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:11:11,557 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 11:11:11,565 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:11,635 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:11,640 INFO ]: Computing forward predicates... [2018-06-22 11:11:11,708 INFO ]: Checked inductivity of 433 backedges. 126 proven. 29 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-06-22 11:11:11,727 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:11:11,728 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 18 [2018-06-22 11:11:11,728 INFO ]: Interpolant automaton has 18 states [2018-06-22 11:11:11,728 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 11:11:11,728 INFO ]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:11:11,728 INFO ]: Start difference. First operand 150 states and 451 transitions. Second operand 18 states. [2018-06-22 11:11:12,323 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:12,323 INFO ]: Finished difference Result 226 states and 741 transitions. [2018-06-22 11:11:12,323 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-06-22 11:11:12,323 INFO ]: Start accepts. Automaton has 18 states. Word has length 113 [2018-06-22 11:11:12,324 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:12,331 INFO ]: With dead ends: 226 [2018-06-22 11:11:12,331 INFO ]: Without dead ends: 196 [2018-06-22 11:11:12,331 INFO ]: 0 DeclaredPredicates, 151 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 11:11:12,331 INFO ]: Start minimizeSevpa. Operand 196 states. [2018-06-22 11:11:12,360 INFO ]: Finished minimizeSevpa. Reduced states from 196 to 166. [2018-06-22 11:11:12,360 INFO ]: Start removeUnreachable. Operand 166 states. [2018-06-22 11:11:12,363 INFO ]: Finished removeUnreachable. Reduced from 166 states to 166 states and 511 transitions. [2018-06-22 11:11:12,363 INFO ]: Start accepts. Automaton has 166 states and 511 transitions. Word has length 113 [2018-06-22 11:11:12,363 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:12,363 INFO ]: Abstraction has 166 states and 511 transitions. [2018-06-22 11:11:12,363 INFO ]: Interpolant automaton has 18 states. [2018-06-22 11:11:12,363 INFO ]: Start isEmpty. Operand 166 states and 511 transitions. [2018-06-22 11:11:12,365 INFO ]: Finished isEmpty. Found accepting run of length 114 [2018-06-22 11:11:12,365 INFO ]: Found error trace [2018-06-22 11:11:12,365 INFO ]: trace histogram [15, 13, 8, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:12,365 INFO ]: === Iteration 30 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:12,366 INFO ]: Analyzing trace with hash -2029901730, now seen corresponding path program 5 times [2018-06-22 11:11:12,366 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:12,366 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:12,366 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:12,366 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:12,366 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:12,384 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:12,568 INFO ]: Checked inductivity of 433 backedges. 23 proven. 40 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2018-06-22 11:11:12,568 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:11:12,568 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:11:12,573 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 11:11:12,643 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-06-22 11:11:12,643 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:12,646 INFO ]: Computing forward predicates... [2018-06-22 11:11:13,082 INFO ]: Checked inductivity of 433 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2018-06-22 11:11:13,113 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:11:13,113 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 17 [2018-06-22 11:11:13,113 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:11:13,113 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:11:13,113 INFO ]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:11:13,113 INFO ]: Start difference. First operand 166 states and 511 transitions. Second operand 17 states. Received shutdown request... [2018-06-22 11:11:14,098 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:11:14,098 WARN ]: Verification canceled [2018-06-22 11:11:14,104 WARN ]: Timeout [2018-06-22 11:11:14,105 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:11:14 BoogieIcfgContainer [2018-06-22 11:11:14,105 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:11:14,106 INFO ]: Toolchain (without parser) took 54779.85 ms. Allocated memory was 306.7 MB in the beginning and 770.7 MB in the end (delta: 464.0 MB). Free memory was 259.2 MB in the beginning and 739.8 MB in the end (delta: -480.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 3.6 GB. [2018-06-22 11:11:14,109 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:11:14,109 INFO ]: ChcToBoogie took 60.01 ms. Allocated memory is still 306.7 MB. Free memory was 257.3 MB in the beginning and 255.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:11:14,109 INFO ]: Boogie Preprocessor took 54.10 ms. Allocated memory is still 306.7 MB. Free memory is still 255.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:11:14,110 INFO ]: RCFGBuilder took 417.07 ms. Allocated memory is still 306.7 MB. Free memory was 255.3 MB in the beginning and 239.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:11:14,110 INFO ]: TraceAbstraction took 54241.26 ms. Allocated memory was 306.7 MB in the beginning and 770.7 MB in the end (delta: 464.0 MB). Free memory was 239.3 MB in the beginning and 739.8 MB in the end (delta: -500.6 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:11:14,113 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 306.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 60.01 ms. Allocated memory is still 306.7 MB. Free memory was 257.3 MB in the beginning and 255.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 54.10 ms. Allocated memory is still 306.7 MB. Free memory is still 255.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 417.07 ms. Allocated memory is still 306.7 MB. Free memory was 255.3 MB in the beginning and 239.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 54241.26 ms. Allocated memory was 306.7 MB in the beginning and 770.7 MB in the end (delta: 464.0 MB). Free memory was 239.3 MB in the beginning and 739.8 MB in the end (delta: -500.6 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (166states) and interpolant automaton (currently 5 states, 17 states before enhancement), while ReachableStatesComputation was computing reachable states (10 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 41 locations, 1 error locations. TIMEOUT Result, 54.1s OverallTime, 30 OverallIterations, 15 TraceHistogramMax, 29.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1646 SDtfs, 308 SDslu, 12085 SDs, 0 SdLazy, 26206 SolverSat, 1743 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2585 GetRequests, 1985 SyntacticMatches, 11 SemanticMatches, 589 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 21.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred in iteration=18, 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: 0.9s AutomataMinimizationTime, 29 MinimizatonAttempts, 683 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 20.5s InterpolantComputationTime, 4071 NumberOfCodeBlocks, 4041 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 4012 ConstructedInterpolants, 18 QuantifiedInterpolants, 662420 SizeOfPredicates, 163 NumberOfNonLiveVariables, 12469 ConjunctsInSsa, 572 ConjunctsInUnsatCore, 59 InterpolantComputations, 3 PerfectInterpolantSequences, 8389/9973 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/006-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-11-14-126.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/006-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-11-14-126.csv Completed graceful shutdown