java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-programs/copysome1_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:27:15,844 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:27:15,846 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:27:15,858 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:27:15,858 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:27:15,859 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:27:15,860 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:27:15,862 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:27:15,864 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:27:15,865 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:27:15,866 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:27:15,866 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:27:15,867 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:27:15,868 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:27:15,869 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:27:15,870 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:27:15,871 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:27:15,873 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:27:15,875 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:27:15,876 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:27:15,878 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:27:15,879 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:27:15,881 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:27:15,881 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:27:15,882 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:27:15,883 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:27:15,883 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:27:15,884 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:27:15,884 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:27:15,885 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:27:15,886 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:27:15,887 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:27:15,888 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:27:15,888 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:27:15,889 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:27:15,889 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:27:15,889 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:27:15,890 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:27:15,891 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:27:15,891 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:27:15,911 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:27:15,911 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:27:15,912 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:27:15,913 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:27:15,914 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:27:15,914 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:27:15,914 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:27:15,914 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:27:15,915 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:27:15,915 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:27:15,915 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:27:15,915 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:27:15,915 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:27:15,916 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:27:15,917 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:27:15,917 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:27:15,917 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:27:15,917 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:27:15,917 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:27:15,918 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:27:15,918 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:27:15,918 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:27:15,918 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:27:15,919 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:27:15,919 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:27:15,920 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:27:15,920 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:27:15,920 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:27:15,920 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:27:15,974 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:27:15,986 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:27:15,988 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:27:15,989 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:27:15,990 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:27:15,990 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-programs/copysome1_false-unreach-call.i [2019-05-23 11:27:16,049 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcba1aa96/ca98154c6b1540e3b2bd8ee6c80f211b/FLAG5eae29970 [2019-05-23 11:27:16,470 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:27:16,471 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-programs/copysome1_false-unreach-call.i [2019-05-23 11:27:16,477 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcba1aa96/ca98154c6b1540e3b2bd8ee6c80f211b/FLAG5eae29970 [2019-05-23 11:27:16,838 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcba1aa96/ca98154c6b1540e3b2bd8ee6c80f211b [2019-05-23 11:27:16,847 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:27:16,848 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:27:16,849 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:27:16,849 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:27:16,853 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:27:16,854 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:27:16" (1/1) ... [2019-05-23 11:27:16,857 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b73007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:16, skipping insertion in model container [2019-05-23 11:27:16,857 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:27:16" (1/1) ... [2019-05-23 11:27:16,864 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:27:16,882 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:27:17,106 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:27:17,112 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:27:17,144 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:27:17,171 INFO L146 ILogger]: Completed translation [2019-05-23 11:27:17,171 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:17 WrapperNode [2019-05-23 11:27:17,172 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:27:17,172 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:27:17,173 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:27:17,173 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:27:17,182 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:17" (1/1) ... [2019-05-23 11:27:17,200 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:17" (1/1) ... [2019-05-23 11:27:17,219 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:27:17,220 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:27:17,220 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:27:17,220 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:27:17,229 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:17" (1/1) ... [2019-05-23 11:27:17,230 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:17" (1/1) ... [2019-05-23 11:27:17,231 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:17" (1/1) ... [2019-05-23 11:27:17,232 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:17" (1/1) ... [2019-05-23 11:27:17,237 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:17" (1/1) ... [2019-05-23 11:27:17,242 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:17" (1/1) ... [2019-05-23 11:27:17,244 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:17" (1/1) ... [2019-05-23 11:27:17,246 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:27:17,247 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:27:17,247 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:27:17,247 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:27:17,248 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -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:4096 -smt2 -in -t:12000 [2019-05-23 11:27:17,396 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:27:17,396 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:27:17,396 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:27:17,396 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:27:17,397 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:27:17,397 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:27:17,859 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:27:17,859 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:27:17,861 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:27:17 BoogieIcfgContainer [2019-05-23 11:27:17,861 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:27:17,862 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:27:17,862 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:27:17,865 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:27:17,865 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:27:16" (1/3) ... [2019-05-23 11:27:17,866 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d5435d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:27:17, skipping insertion in model container [2019-05-23 11:27:17,866 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:27:17" (2/3) ... [2019-05-23 11:27:17,867 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d5435d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:27:17, skipping insertion in model container [2019-05-23 11:27:17,867 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:27:17" (3/3) ... [2019-05-23 11:27:17,869 INFO L146 ILogger]: Analyzing ICFG copysome1_false-unreach-call.i [2019-05-23 11:27:17,878 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:27:17,887 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:27:17,903 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:27:17,934 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:27:17,935 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:27:17,935 INFO L146 ILogger]: Hoare is true [2019-05-23 11:27:17,935 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:27:17,936 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:27:17,936 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:27:17,936 INFO L146 ILogger]: Difference is false [2019-05-23 11:27:17,936 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:27:17,936 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:27:17,951 INFO L146 ILogger]: Start isEmpty. Operand 55 states. [2019-05-23 11:27:17,958 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:27:17,958 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:17,959 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:17,961 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:17,965 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:17,965 INFO L146 ILogger]: Analyzing trace with hash -1841603858, now seen corresponding path program 1 times [2019-05-23 11:27:17,967 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:17,967 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:18,008 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:18,008 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:18,008 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:18,043 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:18,081 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:18,085 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:27:18,086 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:27:18,088 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:27:18,098 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:27:18,099 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:27:18,100 INFO L146 ILogger]: Start difference. First operand 55 states. Second operand 2 states. [2019-05-23 11:27:18,120 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:18,121 INFO L146 ILogger]: Finished difference Result 90 states and 104 transitions. [2019-05-23 11:27:18,121 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:27:18,122 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 25 [2019-05-23 11:27:18,123 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:18,131 INFO L146 ILogger]: With dead ends: 90 [2019-05-23 11:27:18,132 INFO L146 ILogger]: Without dead ends: 47 [2019-05-23 11:27:18,135 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:27:18,149 INFO L146 ILogger]: Start minimizeSevpa. Operand 47 states. [2019-05-23 11:27:18,165 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-05-23 11:27:18,166 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:27:18,168 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-05-23 11:27:18,169 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 25 [2019-05-23 11:27:18,170 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:18,170 INFO L146 ILogger]: Abstraction has 47 states and 51 transitions. [2019-05-23 11:27:18,170 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:27:18,170 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 51 transitions. [2019-05-23 11:27:18,171 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:27:18,171 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:18,171 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:18,172 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:18,172 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:18,172 INFO L146 ILogger]: Analyzing trace with hash -1442123042, now seen corresponding path program 1 times [2019-05-23 11:27:18,172 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:18,173 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:18,174 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:18,174 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:18,174 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:18,187 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:18,236 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:18,237 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:27:18,237 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:27:18,238 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:27:18,239 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:27:18,239 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:27:18,239 INFO L146 ILogger]: Start difference. First operand 47 states and 51 transitions. Second operand 3 states. [2019-05-23 11:27:18,377 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:18,377 INFO L146 ILogger]: Finished difference Result 90 states and 100 transitions. [2019-05-23 11:27:18,378 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:27:18,378 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 25 [2019-05-23 11:27:18,378 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:18,379 INFO L146 ILogger]: With dead ends: 90 [2019-05-23 11:27:18,379 INFO L146 ILogger]: Without dead ends: 63 [2019-05-23 11:27:18,381 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:27:18,382 INFO L146 ILogger]: Start minimizeSevpa. Operand 63 states. [2019-05-23 11:27:18,387 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 63 to 49. [2019-05-23 11:27:18,387 INFO L146 ILogger]: Start removeUnreachable. Operand 49 states. [2019-05-23 11:27:18,389 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2019-05-23 11:27:18,389 INFO L146 ILogger]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 25 [2019-05-23 11:27:18,389 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:18,389 INFO L146 ILogger]: Abstraction has 49 states and 53 transitions. [2019-05-23 11:27:18,389 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:27:18,390 INFO L146 ILogger]: Start isEmpty. Operand 49 states and 53 transitions. [2019-05-23 11:27:18,391 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:27:18,391 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:18,391 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:18,391 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:18,392 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:18,392 INFO L146 ILogger]: Analyzing trace with hash -1346553915, now seen corresponding path program 1 times [2019-05-23 11:27:18,392 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:18,392 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:18,393 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:18,394 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:18,394 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:18,413 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:18,526 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:27:18,527 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:18,527 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:18,544 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:18,590 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:18,592 INFO L146 ILogger]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:27:18,600 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:18,753 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:27:18,775 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:18,775 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:27:18,776 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:27:18,776 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:27:18,777 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:27:18,777 INFO L146 ILogger]: Start difference. First operand 49 states and 53 transitions. Second operand 7 states. [2019-05-23 11:27:19,406 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:19,406 INFO L146 ILogger]: Finished difference Result 101 states and 110 transitions. [2019-05-23 11:27:19,408 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:27:19,408 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 40 [2019-05-23 11:27:19,408 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:19,409 INFO L146 ILogger]: With dead ends: 101 [2019-05-23 11:27:19,409 INFO L146 ILogger]: Without dead ends: 73 [2019-05-23 11:27:19,410 INFO L146 ILogger]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:27:19,411 INFO L146 ILogger]: Start minimizeSevpa. Operand 73 states. [2019-05-23 11:27:19,417 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 73 to 59. [2019-05-23 11:27:19,418 INFO L146 ILogger]: Start removeUnreachable. Operand 59 states. [2019-05-23 11:27:19,419 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2019-05-23 11:27:19,419 INFO L146 ILogger]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 40 [2019-05-23 11:27:19,420 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:19,420 INFO L146 ILogger]: Abstraction has 59 states and 63 transitions. [2019-05-23 11:27:19,420 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:27:19,420 INFO L146 ILogger]: Start isEmpty. Operand 59 states and 63 transitions. [2019-05-23 11:27:19,421 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 51 [2019-05-23 11:27:19,422 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:19,422 INFO L146 ILogger]: trace histogram [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, 1, 1] [2019-05-23 11:27:19,422 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:19,422 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:19,423 INFO L146 ILogger]: Analyzing trace with hash -279541525, now seen corresponding path program 2 times [2019-05-23 11:27:19,423 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:19,423 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:19,424 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:19,424 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:19,424 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:19,448 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:19,527 INFO L146 ILogger]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:27:19,527 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:19,527 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:27:19,547 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:27:19,581 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:27:19,581 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:19,582 INFO L146 ILogger]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:27:19,585 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:19,692 INFO L146 ILogger]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:27:19,722 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:19,723 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2019-05-23 11:27:19,723 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:27:19,723 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:27:19,725 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:27:19,725 INFO L146 ILogger]: Start difference. First operand 59 states and 63 transitions. Second operand 9 states. [2019-05-23 11:27:20,358 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:20,358 INFO L146 ILogger]: Finished difference Result 119 states and 130 transitions. [2019-05-23 11:27:20,362 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:27:20,362 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 50 [2019-05-23 11:27:20,362 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:20,363 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:27:20,363 INFO L146 ILogger]: Without dead ends: 91 [2019-05-23 11:27:20,364 INFO L146 ILogger]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:27:20,367 INFO L146 ILogger]: Start minimizeSevpa. Operand 91 states. [2019-05-23 11:27:20,376 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 91 to 77. [2019-05-23 11:27:20,377 INFO L146 ILogger]: Start removeUnreachable. Operand 77 states. [2019-05-23 11:27:20,379 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2019-05-23 11:27:20,381 INFO L146 ILogger]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 50 [2019-05-23 11:27:20,382 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:20,382 INFO L146 ILogger]: Abstraction has 77 states and 82 transitions. [2019-05-23 11:27:20,382 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:27:20,382 INFO L146 ILogger]: Start isEmpty. Operand 77 states and 82 transitions. [2019-05-23 11:27:20,383 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 66 [2019-05-23 11:27:20,383 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:20,384 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:27:20,384 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:20,384 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:20,385 INFO L146 ILogger]: Analyzing trace with hash -1558153396, now seen corresponding path program 3 times [2019-05-23 11:27:20,385 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:20,385 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:20,388 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:20,389 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:20,389 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:20,417 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:20,538 INFO L146 ILogger]: Checked inductivity of 40 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:27:20,539 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:20,539 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:27:20,550 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:27:20,575 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:27:20,576 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:20,576 INFO L146 ILogger]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:27:20,581 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:20,648 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-05-23 11:27:20,666 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:20,666 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-05-23 11:27:20,666 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:27:20,667 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:27:20,667 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:27:20,667 INFO L146 ILogger]: Start difference. First operand 77 states and 82 transitions. Second operand 10 states. [2019-05-23 11:27:21,403 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:21,404 INFO L146 ILogger]: Finished difference Result 123 states and 134 transitions. [2019-05-23 11:27:21,405 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:27:21,405 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 65 [2019-05-23 11:27:21,406 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:21,407 INFO L146 ILogger]: With dead ends: 123 [2019-05-23 11:27:21,407 INFO L146 ILogger]: Without dead ends: 93 [2019-05-23 11:27:21,408 INFO L146 ILogger]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:27:21,408 INFO L146 ILogger]: Start minimizeSevpa. Operand 93 states. [2019-05-23 11:27:21,414 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 93 to 85. [2019-05-23 11:27:21,414 INFO L146 ILogger]: Start removeUnreachable. Operand 85 states. [2019-05-23 11:27:21,415 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2019-05-23 11:27:21,416 INFO L146 ILogger]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 65 [2019-05-23 11:27:21,416 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:21,416 INFO L146 ILogger]: Abstraction has 85 states and 89 transitions. [2019-05-23 11:27:21,416 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:27:21,416 INFO L146 ILogger]: Start isEmpty. Operand 85 states and 89 transitions. [2019-05-23 11:27:21,418 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:27:21,418 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:21,418 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:21,418 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:21,418 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:21,419 INFO L146 ILogger]: Analyzing trace with hash 1839689297, now seen corresponding path program 1 times [2019-05-23 11:27:21,419 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:21,419 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:21,420 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:21,420 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:21,420 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:21,443 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:21,706 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:27:21,706 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:21,706 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:21,715 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:21,751 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:21,752 INFO L146 ILogger]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:27:21,755 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:21,831 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:27:21,849 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:21,849 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:27:21,850 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:27:21,850 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:27:21,850 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:27:21,851 INFO L146 ILogger]: Start difference. First operand 85 states and 89 transitions. Second operand 11 states. [2019-05-23 11:27:22,001 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:22,002 INFO L146 ILogger]: Finished difference Result 147 states and 155 transitions. [2019-05-23 11:27:22,002 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:27:22,002 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 79 [2019-05-23 11:27:22,002 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:22,003 INFO L146 ILogger]: With dead ends: 147 [2019-05-23 11:27:22,004 INFO L146 ILogger]: Without dead ends: 103 [2019-05-23 11:27:22,005 INFO L146 ILogger]: 0 DeclaredPredicates, 93 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:27:22,005 INFO L146 ILogger]: Start minimizeSevpa. Operand 103 states. [2019-05-23 11:27:22,011 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 103 to 95. [2019-05-23 11:27:22,012 INFO L146 ILogger]: Start removeUnreachable. Operand 95 states. [2019-05-23 11:27:22,013 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2019-05-23 11:27:22,013 INFO L146 ILogger]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 79 [2019-05-23 11:27:22,013 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:22,014 INFO L146 ILogger]: Abstraction has 95 states and 99 transitions. [2019-05-23 11:27:22,014 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:27:22,014 INFO L146 ILogger]: Start isEmpty. Operand 95 states and 99 transitions. [2019-05-23 11:27:22,015 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 90 [2019-05-23 11:27:22,015 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:22,015 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:22,016 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:22,016 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:22,016 INFO L146 ILogger]: Analyzing trace with hash -1416184213, now seen corresponding path program 2 times [2019-05-23 11:27:22,016 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:22,016 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:22,017 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:22,017 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:22,017 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:22,039 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:22,165 INFO L146 ILogger]: Checked inductivity of 91 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:27:22,165 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:22,165 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:27:22,175 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:27:22,212 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:27:22,212 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:22,213 INFO L146 ILogger]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:27:22,216 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:22,286 INFO L146 ILogger]: Checked inductivity of 91 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:27:22,307 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:22,307 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:27:22,308 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:27:22,308 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:27:22,308 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:27:22,308 INFO L146 ILogger]: Start difference. First operand 95 states and 99 transitions. Second operand 13 states. [2019-05-23 11:27:22,544 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:22,544 INFO L146 ILogger]: Finished difference Result 157 states and 165 transitions. [2019-05-23 11:27:22,545 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:27:22,545 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 89 [2019-05-23 11:27:22,546 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:22,547 INFO L146 ILogger]: With dead ends: 157 [2019-05-23 11:27:22,547 INFO L146 ILogger]: Without dead ends: 113 [2019-05-23 11:27:22,548 INFO L146 ILogger]: 0 DeclaredPredicates, 107 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:27:22,549 INFO L146 ILogger]: Start minimizeSevpa. Operand 113 states. [2019-05-23 11:27:22,560 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 113 to 105. [2019-05-23 11:27:22,560 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:27:22,561 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2019-05-23 11:27:22,561 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 89 [2019-05-23 11:27:22,562 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:22,562 INFO L146 ILogger]: Abstraction has 105 states and 109 transitions. [2019-05-23 11:27:22,562 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:27:22,562 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 109 transitions. [2019-05-23 11:27:22,564 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 100 [2019-05-23 11:27:22,564 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:22,564 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:22,564 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:22,565 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:22,565 INFO L146 ILogger]: Analyzing trace with hash 568079877, now seen corresponding path program 3 times [2019-05-23 11:27:22,565 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:22,565 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:22,566 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:22,566 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:22,566 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:22,587 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:22,737 INFO L146 ILogger]: Checked inductivity of 132 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:27:22,737 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:22,737 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:27:22,752 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:27:22,833 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:27:22,833 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:22,834 INFO L146 ILogger]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:27:22,844 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:23,376 INFO L146 ILogger]: Checked inductivity of 132 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-05-23 11:27:23,395 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:23,396 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 17 [2019-05-23 11:27:23,396 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:27:23,396 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:27:23,397 INFO L146 ILogger]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:27:23,397 INFO L146 ILogger]: Start difference. First operand 105 states and 109 transitions. Second operand 17 states. [2019-05-23 11:27:23,916 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:23,916 INFO L146 ILogger]: Finished difference Result 191 states and 202 transitions. [2019-05-23 11:27:23,916 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:27:23,916 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 99 [2019-05-23 11:27:23,917 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:23,918 INFO L146 ILogger]: With dead ends: 191 [2019-05-23 11:27:23,918 INFO L146 ILogger]: Without dead ends: 147 [2019-05-23 11:27:23,919 INFO L146 ILogger]: 0 DeclaredPredicates, 127 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:27:23,920 INFO L146 ILogger]: Start minimizeSevpa. Operand 147 states. [2019-05-23 11:27:23,928 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 147 to 123. [2019-05-23 11:27:23,928 INFO L146 ILogger]: Start removeUnreachable. Operand 123 states. [2019-05-23 11:27:23,929 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2019-05-23 11:27:23,929 INFO L146 ILogger]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 99 [2019-05-23 11:27:23,929 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:23,930 INFO L146 ILogger]: Abstraction has 123 states and 128 transitions. [2019-05-23 11:27:23,930 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:27:23,930 INFO L146 ILogger]: Start isEmpty. Operand 123 states and 128 transitions. [2019-05-23 11:27:23,931 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 115 [2019-05-23 11:27:23,931 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:23,932 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:23,932 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:23,932 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:23,932 INFO L146 ILogger]: Analyzing trace with hash 97105292, now seen corresponding path program 1 times [2019-05-23 11:27:23,933 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:23,933 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:23,933 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:23,934 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:23,934 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:23,955 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:24,268 INFO L146 ILogger]: Checked inductivity of 199 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:27:24,268 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:24,268 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:27:24,277 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:24,314 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:24,315 INFO L146 ILogger]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:27:24,318 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:24,362 INFO L146 ILogger]: Checked inductivity of 199 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:27:24,380 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:24,381 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:27:24,381 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:27:24,381 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:27:24,382 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:27:24,382 INFO L146 ILogger]: Start difference. First operand 123 states and 128 transitions. Second operand 17 states. [2019-05-23 11:27:24,740 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:24,740 INFO L146 ILogger]: Finished difference Result 193 states and 203 transitions. [2019-05-23 11:27:24,740 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:27:24,740 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 114 [2019-05-23 11:27:24,741 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:24,742 INFO L146 ILogger]: With dead ends: 193 [2019-05-23 11:27:24,742 INFO L146 ILogger]: Without dead ends: 141 [2019-05-23 11:27:24,743 INFO L146 ILogger]: 0 DeclaredPredicates, 140 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:27:24,743 INFO L146 ILogger]: Start minimizeSevpa. Operand 141 states. [2019-05-23 11:27:24,748 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 141 to 133. [2019-05-23 11:27:24,749 INFO L146 ILogger]: Start removeUnreachable. Operand 133 states. [2019-05-23 11:27:24,750 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2019-05-23 11:27:24,750 INFO L146 ILogger]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 114 [2019-05-23 11:27:24,750 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:24,750 INFO L146 ILogger]: Abstraction has 133 states and 138 transitions. [2019-05-23 11:27:24,750 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:27:24,751 INFO L146 ILogger]: Start isEmpty. Operand 133 states and 138 transitions. [2019-05-23 11:27:24,752 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 125 [2019-05-23 11:27:24,752 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:24,752 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:24,753 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:24,753 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:24,753 INFO L146 ILogger]: Analyzing trace with hash -645652686, now seen corresponding path program 2 times [2019-05-23 11:27:24,753 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:24,753 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:24,754 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:24,754 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:24,754 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:24,775 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:25,042 INFO L146 ILogger]: Checked inductivity of 260 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:27:25,043 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:25,043 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:27:25,053 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:27:25,096 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:27:25,096 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:25,097 INFO L146 ILogger]: Trace formula consists of 193 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:27:25,099 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:25,133 INFO L146 ILogger]: Checked inductivity of 260 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:27:25,152 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:25,152 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:27:25,153 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:27:25,153 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:27:25,153 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:27:25,154 INFO L146 ILogger]: Start difference. First operand 133 states and 138 transitions. Second operand 19 states. [2019-05-23 11:27:25,765 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:25,765 INFO L146 ILogger]: Finished difference Result 203 states and 213 transitions. [2019-05-23 11:27:25,766 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:27:25,766 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 124 [2019-05-23 11:27:25,767 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:25,768 INFO L146 ILogger]: With dead ends: 203 [2019-05-23 11:27:25,769 INFO L146 ILogger]: Without dead ends: 151 [2019-05-23 11:27:25,770 INFO L146 ILogger]: 0 DeclaredPredicates, 154 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:27:25,770 INFO L146 ILogger]: Start minimizeSevpa. Operand 151 states. [2019-05-23 11:27:25,775 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 151 to 143. [2019-05-23 11:27:25,775 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:27:25,776 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 148 transitions. [2019-05-23 11:27:25,776 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 148 transitions. Word has length 124 [2019-05-23 11:27:25,777 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:25,777 INFO L146 ILogger]: Abstraction has 143 states and 148 transitions. [2019-05-23 11:27:25,777 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:27:25,777 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 148 transitions. [2019-05-23 11:27:25,779 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 135 [2019-05-23 11:27:25,779 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:25,779 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:25,780 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:25,780 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:25,780 INFO L146 ILogger]: Analyzing trace with hash 643510616, now seen corresponding path program 3 times [2019-05-23 11:27:25,780 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:25,781 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:25,781 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:25,782 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:25,782 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:25,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:26,244 INFO L146 ILogger]: Checked inductivity of 331 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:27:26,245 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:26,245 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:27:26,253 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:27:26,280 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:27:26,281 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:26,282 INFO L146 ILogger]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:27:26,284 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:26,393 INFO L146 ILogger]: Checked inductivity of 331 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2019-05-23 11:27:26,412 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:26,412 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 24 [2019-05-23 11:27:26,413 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:27:26,413 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:27:26,413 INFO L146 ILogger]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:27:26,413 INFO L146 ILogger]: Start difference. First operand 143 states and 148 transitions. Second operand 24 states. [2019-05-23 11:27:27,052 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:27,052 INFO L146 ILogger]: Finished difference Result 237 states and 250 transitions. [2019-05-23 11:27:27,052 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:27:27,053 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 134 [2019-05-23 11:27:27,053 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:27,054 INFO L146 ILogger]: With dead ends: 237 [2019-05-23 11:27:27,054 INFO L146 ILogger]: Without dead ends: 185 [2019-05-23 11:27:27,055 INFO L146 ILogger]: 0 DeclaredPredicates, 176 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=550, Invalid=1706, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:27:27,056 INFO L146 ILogger]: Start minimizeSevpa. Operand 185 states. [2019-05-23 11:27:27,061 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 185 to 161. [2019-05-23 11:27:27,061 INFO L146 ILogger]: Start removeUnreachable. Operand 161 states. [2019-05-23 11:27:27,062 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 161 states to 161 states and 167 transitions. [2019-05-23 11:27:27,062 INFO L146 ILogger]: Start accepts. Automaton has 161 states and 167 transitions. Word has length 134 [2019-05-23 11:27:27,062 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:27,062 INFO L146 ILogger]: Abstraction has 161 states and 167 transitions. [2019-05-23 11:27:27,063 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:27:27,067 INFO L146 ILogger]: Start isEmpty. Operand 161 states and 167 transitions. [2019-05-23 11:27:27,069 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 150 [2019-05-23 11:27:27,072 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:27,073 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 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] [2019-05-23 11:27:27,073 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:27,073 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:27,073 INFO L146 ILogger]: Analyzing trace with hash 782127629, now seen corresponding path program 4 times [2019-05-23 11:27:27,074 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:27,074 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:27,074 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:27,075 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:27,076 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:27,096 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:28,050 INFO L146 ILogger]: Checked inductivity of 433 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-05-23 11:27:28,050 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:28,050 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:27:28,059 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:27:28,086 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:27:28,087 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:28,087 INFO L146 ILogger]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:27:28,089 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:28,141 INFO L146 ILogger]: Checked inductivity of 433 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2019-05-23 11:27:28,159 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:27:28,160 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 24 [2019-05-23 11:27:28,160 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:27:28,160 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:27:28,161 INFO L146 ILogger]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:27:28,161 INFO L146 ILogger]: Start difference. First operand 161 states and 167 transitions. Second operand 24 states. [2019-05-23 11:27:28,637 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:28,637 INFO L146 ILogger]: Finished difference Result 263 states and 278 transitions. [2019-05-23 11:27:28,637 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:27:28,638 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 149 [2019-05-23 11:27:28,638 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:28,639 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:27:28,639 INFO L146 ILogger]: Without dead ends: 203 [2019-05-23 11:27:28,641 INFO L146 ILogger]: 0 DeclaredPredicates, 189 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=515, Invalid=1377, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:27:28,641 INFO L146 ILogger]: Start minimizeSevpa. Operand 203 states. [2019-05-23 11:27:28,646 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 203 to 191. [2019-05-23 11:27:28,646 INFO L146 ILogger]: Start removeUnreachable. Operand 191 states. [2019-05-23 11:27:28,648 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 191 states to 191 states and 198 transitions. [2019-05-23 11:27:28,648 INFO L146 ILogger]: Start accepts. Automaton has 191 states and 198 transitions. Word has length 149 [2019-05-23 11:27:28,648 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:28,648 INFO L146 ILogger]: Abstraction has 191 states and 198 transitions. [2019-05-23 11:27:28,649 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:27:28,649 INFO L146 ILogger]: Start isEmpty. Operand 191 states and 198 transitions. [2019-05-23 11:27:28,651 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:27:28,651 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:28,651 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:28,651 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:28,652 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:28,652 INFO L146 ILogger]: Analyzing trace with hash 776921819, now seen corresponding path program 5 times [2019-05-23 11:27:28,652 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:28,652 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:28,653 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:28,653 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:28,653 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:28,691 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:29,032 INFO L146 ILogger]: Checked inductivity of 533 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-05-23 11:27:29,032 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:29,032 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:29,042 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:27:37,402 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:27:37,403 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:37,410 INFO L146 ILogger]: Trace formula consists of 246 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:27:37,412 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:38,279 INFO L146 ILogger]: Checked inductivity of 533 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2019-05-23 11:27:38,303 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:38,303 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 8] total 29 [2019-05-23 11:27:38,304 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:27:38,304 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:27:38,305 INFO L146 ILogger]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:27:38,305 INFO L146 ILogger]: Start difference. First operand 191 states and 198 transitions. Second operand 29 states. [2019-05-23 11:27:39,554 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:39,554 INFO L146 ILogger]: Finished difference Result 281 states and 295 transitions. [2019-05-23 11:27:39,557 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:27:39,557 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 162 [2019-05-23 11:27:39,557 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:39,559 INFO L146 ILogger]: With dead ends: 281 [2019-05-23 11:27:39,559 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:27:39,560 INFO L146 ILogger]: 0 DeclaredPredicates, 217 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1036, Invalid=2746, Unknown=0, NotChecked=0, Total=3782 [2019-05-23 11:27:39,561 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:27:39,565 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 193. [2019-05-23 11:27:39,565 INFO L146 ILogger]: Start removeUnreachable. Operand 193 states. [2019-05-23 11:27:39,566 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 193 states to 193 states and 199 transitions. [2019-05-23 11:27:39,566 INFO L146 ILogger]: Start accepts. Automaton has 193 states and 199 transitions. Word has length 162 [2019-05-23 11:27:39,566 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:39,566 INFO L146 ILogger]: Abstraction has 193 states and 199 transitions. [2019-05-23 11:27:39,566 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:27:39,567 INFO L146 ILogger]: Start isEmpty. Operand 193 states and 199 transitions. [2019-05-23 11:27:39,567 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 173 [2019-05-23 11:27:39,568 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:39,568 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:39,568 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:39,568 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:39,568 INFO L146 ILogger]: Analyzing trace with hash -823792013, now seen corresponding path program 6 times [2019-05-23 11:27:39,569 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:39,569 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:39,569 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:39,570 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:39,570 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:39,587 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:40,006 INFO L146 ILogger]: Checked inductivity of 634 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-05-23 11:27:40,006 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:40,007 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:40,015 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:27:40,242 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:27:40,242 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:40,243 INFO L146 ILogger]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:27:40,246 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:40,380 INFO L146 ILogger]: Checked inductivity of 634 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2019-05-23 11:27:40,402 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:40,402 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8] total 31 [2019-05-23 11:27:40,403 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:27:40,403 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:27:40,403 INFO L146 ILogger]: CoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:27:40,404 INFO L146 ILogger]: Start difference. First operand 193 states and 199 transitions. Second operand 31 states. [2019-05-23 11:27:42,561 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:42,562 INFO L146 ILogger]: Finished difference Result 297 states and 310 transitions. [2019-05-23 11:27:42,562 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:27:42,562 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 172 [2019-05-23 11:27:42,563 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:42,564 INFO L146 ILogger]: With dead ends: 297 [2019-05-23 11:27:42,564 INFO L146 ILogger]: Without dead ends: 225 [2019-05-23 11:27:42,566 INFO L146 ILogger]: 0 DeclaredPredicates, 238 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1416, Invalid=3840, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:27:42,567 INFO L146 ILogger]: Start minimizeSevpa. Operand 225 states. [2019-05-23 11:27:42,574 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 225 to 211. [2019-05-23 11:27:42,574 INFO L146 ILogger]: Start removeUnreachable. Operand 211 states. [2019-05-23 11:27:42,575 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 211 states to 211 states and 217 transitions. [2019-05-23 11:27:42,575 INFO L146 ILogger]: Start accepts. Automaton has 211 states and 217 transitions. Word has length 172 [2019-05-23 11:27:42,576 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:42,576 INFO L146 ILogger]: Abstraction has 211 states and 217 transitions. [2019-05-23 11:27:42,576 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:27:42,576 INFO L146 ILogger]: Start isEmpty. Operand 211 states and 217 transitions. [2019-05-23 11:27:42,577 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 186 [2019-05-23 11:27:42,577 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:42,577 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:42,577 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:42,578 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:42,578 INFO L146 ILogger]: Analyzing trace with hash 172408745, now seen corresponding path program 4 times [2019-05-23 11:27:42,578 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:42,578 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:42,580 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:42,580 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:42,580 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:42,611 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:43,520 INFO L146 ILogger]: Checked inductivity of 757 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:27:43,520 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:43,520 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:27:43,530 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:27:43,770 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:27:43,770 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:43,772 INFO L146 ILogger]: Trace formula consists of 277 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:27:43,775 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:43,856 INFO L146 ILogger]: Checked inductivity of 757 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:27:43,876 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:43,876 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:27:43,877 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:27:43,877 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:27:43,877 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:27:43,878 INFO L146 ILogger]: Start difference. First operand 211 states and 217 transitions. Second operand 29 states. [2019-05-23 11:27:44,517 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:44,518 INFO L146 ILogger]: Finished difference Result 309 states and 321 transitions. [2019-05-23 11:27:44,519 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:27:44,519 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 185 [2019-05-23 11:27:44,519 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:44,520 INFO L146 ILogger]: With dead ends: 309 [2019-05-23 11:27:44,520 INFO L146 ILogger]: Without dead ends: 229 [2019-05-23 11:27:44,521 INFO L146 ILogger]: 0 DeclaredPredicates, 235 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:27:44,522 INFO L146 ILogger]: Start minimizeSevpa. Operand 229 states. [2019-05-23 11:27:44,526 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 229 to 221. [2019-05-23 11:27:44,526 INFO L146 ILogger]: Start removeUnreachable. Operand 221 states. [2019-05-23 11:27:44,527 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 221 states to 221 states and 227 transitions. [2019-05-23 11:27:44,527 INFO L146 ILogger]: Start accepts. Automaton has 221 states and 227 transitions. Word has length 185 [2019-05-23 11:27:44,527 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:44,527 INFO L146 ILogger]: Abstraction has 221 states and 227 transitions. [2019-05-23 11:27:44,527 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:27:44,527 INFO L146 ILogger]: Start isEmpty. Operand 221 states and 227 transitions. [2019-05-23 11:27:44,528 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 196 [2019-05-23 11:27:44,528 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:44,529 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:44,529 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:44,529 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:44,529 INFO L146 ILogger]: Analyzing trace with hash 1642954563, now seen corresponding path program 5 times [2019-05-23 11:27:44,529 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:44,530 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:44,530 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:44,530 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:44,531 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:44,547 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:44,916 INFO L146 ILogger]: Checked inductivity of 878 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:27:44,917 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:44,917 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:27:44,925 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:27:58,688 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2019-05-23 11:27:58,689 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:58,700 INFO L146 ILogger]: Trace formula consists of 291 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:27:58,703 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:58,787 INFO L146 ILogger]: Checked inductivity of 878 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:27:58,817 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:58,818 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:27:58,818 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:27:58,819 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:27:58,819 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:27:58,819 INFO L146 ILogger]: Start difference. First operand 221 states and 227 transitions. Second operand 31 states. [2019-05-23 11:27:59,529 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:59,530 INFO L146 ILogger]: Finished difference Result 319 states and 331 transitions. [2019-05-23 11:27:59,530 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:27:59,530 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 195 [2019-05-23 11:27:59,531 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:59,532 INFO L146 ILogger]: With dead ends: 319 [2019-05-23 11:27:59,532 INFO L146 ILogger]: Without dead ends: 239 [2019-05-23 11:27:59,533 INFO L146 ILogger]: 0 DeclaredPredicates, 249 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:27:59,534 INFO L146 ILogger]: Start minimizeSevpa. Operand 239 states. [2019-05-23 11:27:59,537 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 239 to 231. [2019-05-23 11:27:59,538 INFO L146 ILogger]: Start removeUnreachable. Operand 231 states. [2019-05-23 11:27:59,538 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 231 states to 231 states and 237 transitions. [2019-05-23 11:27:59,539 INFO L146 ILogger]: Start accepts. Automaton has 231 states and 237 transitions. Word has length 195 [2019-05-23 11:27:59,539 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:59,539 INFO L146 ILogger]: Abstraction has 231 states and 237 transitions. [2019-05-23 11:27:59,539 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:27:59,539 INFO L146 ILogger]: Start isEmpty. Operand 231 states and 237 transitions. [2019-05-23 11:27:59,540 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 206 [2019-05-23 11:27:59,540 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:59,541 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:59,541 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:59,541 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:59,541 INFO L146 ILogger]: Analyzing trace with hash 352650845, now seen corresponding path program 6 times [2019-05-23 11:27:59,542 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:59,542 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:59,542 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:59,543 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:59,543 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:59,560 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:59,960 INFO L146 ILogger]: Checked inductivity of 1009 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:27:59,960 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:59,960 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:27:59,968 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:28:02,147 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:28:02,148 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:02,152 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:28:02,154 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:02,263 INFO L146 ILogger]: Checked inductivity of 1009 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2019-05-23 11:28:02,284 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:02,284 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 13] total 37 [2019-05-23 11:28:02,284 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:28:02,285 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:28:02,285 INFO L146 ILogger]: CoverageRelationStatistics Valid=292, Invalid=1040, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:28:02,285 INFO L146 ILogger]: Start difference. First operand 231 states and 237 transitions. Second operand 37 states. [2019-05-23 11:28:03,995 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:03,995 INFO L146 ILogger]: Finished difference Result 373 states and 388 transitions. [2019-05-23 11:28:03,997 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:28:03,997 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 205 [2019-05-23 11:28:03,997 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:03,999 INFO L146 ILogger]: With dead ends: 373 [2019-05-23 11:28:03,999 INFO L146 ILogger]: Without dead ends: 293 [2019-05-23 11:28:04,001 INFO L146 ILogger]: 0 DeclaredPredicates, 273 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1382, Invalid=4168, Unknown=0, NotChecked=0, Total=5550 [2019-05-23 11:28:04,002 INFO L146 ILogger]: Start minimizeSevpa. Operand 293 states. [2019-05-23 11:28:04,007 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 293 to 249. [2019-05-23 11:28:04,007 INFO L146 ILogger]: Start removeUnreachable. Operand 249 states. [2019-05-23 11:28:04,008 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 249 states to 249 states and 256 transitions. [2019-05-23 11:28:04,008 INFO L146 ILogger]: Start accepts. Automaton has 249 states and 256 transitions. Word has length 205 [2019-05-23 11:28:04,008 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:04,009 INFO L146 ILogger]: Abstraction has 249 states and 256 transitions. [2019-05-23 11:28:04,009 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:28:04,009 INFO L146 ILogger]: Start isEmpty. Operand 249 states and 256 transitions. [2019-05-23 11:28:04,010 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 221 [2019-05-23 11:28:04,010 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:04,010 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:04,011 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:04,011 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:04,011 INFO L146 ILogger]: Analyzing trace with hash 640784066, now seen corresponding path program 7 times [2019-05-23 11:28:04,011 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:04,011 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:04,012 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:04,012 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:04,012 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:04,031 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:04,870 INFO L146 ILogger]: Checked inductivity of 1176 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:28:04,870 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:04,870 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:28:04,879 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:04,927 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:04,928 INFO L146 ILogger]: Trace formula consists of 327 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:28:04,931 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:05,011 INFO L146 ILogger]: Checked inductivity of 1176 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:28:05,029 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:05,029 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:28:05,030 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:28:05,030 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:28:05,031 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:28:05,031 INFO L146 ILogger]: Start difference. First operand 249 states and 256 transitions. Second operand 35 states. [2019-05-23 11:28:06,625 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:06,626 INFO L146 ILogger]: Finished difference Result 355 states and 369 transitions. [2019-05-23 11:28:06,627 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:28:06,627 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 220 [2019-05-23 11:28:06,627 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:06,629 INFO L146 ILogger]: With dead ends: 355 [2019-05-23 11:28:06,629 INFO L146 ILogger]: Without dead ends: 267 [2019-05-23 11:28:06,631 INFO L146 ILogger]: 0 DeclaredPredicates, 282 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:28:06,631 INFO L146 ILogger]: Start minimizeSevpa. Operand 267 states. [2019-05-23 11:28:06,636 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 267 to 259. [2019-05-23 11:28:06,636 INFO L146 ILogger]: Start removeUnreachable. Operand 259 states. [2019-05-23 11:28:06,637 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 259 states to 259 states and 266 transitions. [2019-05-23 11:28:06,637 INFO L146 ILogger]: Start accepts. Automaton has 259 states and 266 transitions. Word has length 220 [2019-05-23 11:28:06,637 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:06,637 INFO L146 ILogger]: Abstraction has 259 states and 266 transitions. [2019-05-23 11:28:06,638 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:28:06,638 INFO L146 ILogger]: Start isEmpty. Operand 259 states and 266 transitions. [2019-05-23 11:28:06,639 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 231 [2019-05-23 11:28:06,639 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:06,639 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:06,639 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:06,640 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:06,640 INFO L146 ILogger]: Analyzing trace with hash 367157480, now seen corresponding path program 8 times [2019-05-23 11:28:06,640 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:06,640 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:06,641 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:06,641 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:06,641 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:06,661 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:07,173 INFO L146 ILogger]: Checked inductivity of 1327 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:28:07,173 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:07,173 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:28:07,182 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:28:07,233 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:28:07,233 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:07,234 INFO L146 ILogger]: Trace formula consists of 341 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:28:07,236 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:07,327 INFO L146 ILogger]: Checked inductivity of 1327 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:28:07,346 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:07,346 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-05-23 11:28:07,346 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:28:07,347 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:28:07,347 INFO L146 ILogger]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:28:07,348 INFO L146 ILogger]: Start difference. First operand 259 states and 266 transitions. Second operand 37 states. [2019-05-23 11:28:08,163 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:08,164 INFO L146 ILogger]: Finished difference Result 365 states and 379 transitions. [2019-05-23 11:28:08,164 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:28:08,164 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 230 [2019-05-23 11:28:08,165 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:08,166 INFO L146 ILogger]: With dead ends: 365 [2019-05-23 11:28:08,166 INFO L146 ILogger]: Without dead ends: 277 [2019-05-23 11:28:08,168 INFO L146 ILogger]: 0 DeclaredPredicates, 296 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:28:08,168 INFO L146 ILogger]: Start minimizeSevpa. Operand 277 states. [2019-05-23 11:28:08,173 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 277 to 269. [2019-05-23 11:28:08,173 INFO L146 ILogger]: Start removeUnreachable. Operand 269 states. [2019-05-23 11:28:08,174 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 269 states to 269 states and 276 transitions. [2019-05-23 11:28:08,174 INFO L146 ILogger]: Start accepts. Automaton has 269 states and 276 transitions. Word has length 230 [2019-05-23 11:28:08,174 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:08,174 INFO L146 ILogger]: Abstraction has 269 states and 276 transitions. [2019-05-23 11:28:08,174 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:28:08,175 INFO L146 ILogger]: Start isEmpty. Operand 269 states and 276 transitions. [2019-05-23 11:28:08,176 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 241 [2019-05-23 11:28:08,176 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:08,176 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:08,176 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:08,176 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:08,177 INFO L146 ILogger]: Analyzing trace with hash -1198443634, now seen corresponding path program 9 times [2019-05-23 11:28:08,177 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:08,177 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:08,178 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:08,178 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:08,178 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:08,197 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:08,749 INFO L146 ILogger]: Checked inductivity of 1488 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:28:08,749 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:08,749 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:28:08,757 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:28:08,829 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:28:08,830 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:08,831 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:28:08,835 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:09,942 INFO L146 ILogger]: Checked inductivity of 1488 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2019-05-23 11:28:09,961 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:09,961 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 10] total 45 [2019-05-23 11:28:09,962 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:28:09,962 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:28:09,962 INFO L146 ILogger]: CoverageRelationStatistics Valid=457, Invalid=1523, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:28:09,963 INFO L146 ILogger]: Start difference. First operand 269 states and 276 transitions. Second operand 45 states. [2019-05-23 11:28:12,305 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:12,305 INFO L146 ILogger]: Finished difference Result 389 states and 404 transitions. [2019-05-23 11:28:12,306 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:28:12,306 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 240 [2019-05-23 11:28:12,306 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:12,307 INFO L146 ILogger]: With dead ends: 389 [2019-05-23 11:28:12,307 INFO L146 ILogger]: Without dead ends: 301 [2019-05-23 11:28:12,312 INFO L146 ILogger]: 0 DeclaredPredicates, 339 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2635 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3025, Invalid=8531, Unknown=0, NotChecked=0, Total=11556 [2019-05-23 11:28:12,312 INFO L146 ILogger]: Start minimizeSevpa. Operand 301 states. [2019-05-23 11:28:12,317 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 301 to 287. [2019-05-23 11:28:12,317 INFO L146 ILogger]: Start removeUnreachable. Operand 287 states. [2019-05-23 11:28:12,318 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 287 states to 287 states and 294 transitions. [2019-05-23 11:28:12,318 INFO L146 ILogger]: Start accepts. Automaton has 287 states and 294 transitions. Word has length 240 [2019-05-23 11:28:12,319 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:12,319 INFO L146 ILogger]: Abstraction has 287 states and 294 transitions. [2019-05-23 11:28:12,319 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:28:12,319 INFO L146 ILogger]: Start isEmpty. Operand 287 states and 294 transitions. [2019-05-23 11:28:12,320 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 254 [2019-05-23 11:28:12,320 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:12,320 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:12,321 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:12,321 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:12,321 INFO L146 ILogger]: Analyzing trace with hash -2010820484, now seen corresponding path program 7 times [2019-05-23 11:28:12,321 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:12,321 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:12,322 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:12,322 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:12,322 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:12,341 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:13,794 INFO L146 ILogger]: Checked inductivity of 1674 backedges. 0 proven. 1548 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:28:13,795 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:13,795 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:28:13,804 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:13,863 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:13,865 INFO L146 ILogger]: Trace formula consists of 372 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:28:13,868 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:14,014 INFO L146 ILogger]: Checked inductivity of 1674 backedges. 0 proven. 1548 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:28:14,033 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:14,033 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:28:14,034 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:28:14,034 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:28:14,035 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:28:14,035 INFO L146 ILogger]: Start difference. First operand 287 states and 294 transitions. Second operand 41 states. [2019-05-23 11:28:16,429 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:16,429 INFO L146 ILogger]: Finished difference Result 401 states and 415 transitions. [2019-05-23 11:28:16,429 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:28:16,430 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 253 [2019-05-23 11:28:16,430 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:16,431 INFO L146 ILogger]: With dead ends: 401 [2019-05-23 11:28:16,431 INFO L146 ILogger]: Without dead ends: 305 [2019-05-23 11:28:16,432 INFO L146 ILogger]: 0 DeclaredPredicates, 327 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:28:16,433 INFO L146 ILogger]: Start minimizeSevpa. Operand 305 states. [2019-05-23 11:28:16,438 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 305 to 297. [2019-05-23 11:28:16,439 INFO L146 ILogger]: Start removeUnreachable. Operand 297 states. [2019-05-23 11:28:16,439 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 297 states to 297 states and 304 transitions. [2019-05-23 11:28:16,440 INFO L146 ILogger]: Start accepts. Automaton has 297 states and 304 transitions. Word has length 253 [2019-05-23 11:28:16,440 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:16,440 INFO L146 ILogger]: Abstraction has 297 states and 304 transitions. [2019-05-23 11:28:16,440 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:28:16,440 INFO L146 ILogger]: Start isEmpty. Operand 297 states and 304 transitions. [2019-05-23 11:28:16,442 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 264 [2019-05-23 11:28:16,442 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:16,442 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:16,442 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:16,442 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:16,443 INFO L146 ILogger]: Analyzing trace with hash 1911350038, now seen corresponding path program 8 times [2019-05-23 11:28:16,443 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:16,443 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:16,443 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:16,444 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:16,444 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:16,464 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:17,545 INFO L146 ILogger]: Checked inductivity of 1855 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:28:17,545 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:17,545 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:28:17,555 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:28:17,621 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:28:17,621 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:17,623 INFO L146 ILogger]: Trace formula consists of 386 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:28:17,625 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:17,714 INFO L146 ILogger]: Checked inductivity of 1855 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:28:17,732 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:17,732 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2019-05-23 11:28:17,733 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:28:17,733 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:28:17,733 INFO L146 ILogger]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:28:17,733 INFO L146 ILogger]: Start difference. First operand 297 states and 304 transitions. Second operand 43 states. [2019-05-23 11:28:18,965 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:18,965 INFO L146 ILogger]: Finished difference Result 411 states and 425 transitions. [2019-05-23 11:28:18,968 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:28:18,968 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 263 [2019-05-23 11:28:18,968 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:18,970 INFO L146 ILogger]: With dead ends: 411 [2019-05-23 11:28:18,970 INFO L146 ILogger]: Without dead ends: 315 [2019-05-23 11:28:18,971 INFO L146 ILogger]: 0 DeclaredPredicates, 341 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2019-05-23 11:28:18,971 INFO L146 ILogger]: Start minimizeSevpa. Operand 315 states. [2019-05-23 11:28:18,976 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 315 to 307. [2019-05-23 11:28:18,976 INFO L146 ILogger]: Start removeUnreachable. Operand 307 states. [2019-05-23 11:28:18,977 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 307 states to 307 states and 314 transitions. [2019-05-23 11:28:18,977 INFO L146 ILogger]: Start accepts. Automaton has 307 states and 314 transitions. Word has length 263 [2019-05-23 11:28:18,977 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:18,978 INFO L146 ILogger]: Abstraction has 307 states and 314 transitions. [2019-05-23 11:28:18,978 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:28:18,978 INFO L146 ILogger]: Start isEmpty. Operand 307 states and 314 transitions. [2019-05-23 11:28:18,979 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 274 [2019-05-23 11:28:18,979 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:18,979 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:18,980 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:18,980 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:18,980 INFO L146 ILogger]: Analyzing trace with hash 242842928, now seen corresponding path program 9 times [2019-05-23 11:28:18,980 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:18,980 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:18,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:18,981 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:18,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:19,001 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:20,221 INFO L146 ILogger]: Checked inductivity of 2046 backedges. 0 proven. 1920 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-05-23 11:28:20,222 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:20,222 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-05-23 11:28:20,230 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:28:20,748 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:28:20,748 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:20,749 INFO L146 ILogger]: Trace formula consists of 204 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:28:20,751 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:20,971 INFO L146 ILogger]: Checked inductivity of 2046 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 1920 trivial. 0 not checked. [2019-05-23 11:28:20,990 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:20,991 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 15] total 50 [2019-05-23 11:28:20,991 INFO L146 ILogger]: Interpolant automaton has 50 states [2019-05-23 11:28:20,991 INFO L146 ILogger]: Constructing interpolant automaton starting with 50 interpolants. [2019-05-23 11:28:20,992 INFO L146 ILogger]: CoverageRelationStatistics Valid=533, Invalid=1917, Unknown=0, NotChecked=0, Total=2450 [2019-05-23 11:28:20,992 INFO L146 ILogger]: Start difference. First operand 307 states and 314 transitions. Second operand 50 states.