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-tiling/nr4_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:25:06,854 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:25:06,857 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:25:06,877 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:25:06,878 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:25:06,879 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:25:06,880 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:25:06,882 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:25:06,883 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:25:06,884 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:25:06,885 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:25:06,886 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:25:06,886 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:25:06,887 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:25:06,889 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:25:06,889 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:25:06,890 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:25:06,892 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:25:06,894 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:25:06,896 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:25:06,897 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:25:06,903 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:25:06,906 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:25:06,906 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:25:06,906 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:25:06,907 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:25:06,908 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:25:06,909 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:25:06,909 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:25:06,910 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:25:06,910 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:25:06,911 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:25:06,912 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:25:06,913 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:25:06,913 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:25:06,913 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:25:06,914 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:25:06,915 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:25:06,915 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:25:06,916 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:25:06,930 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:25:06,931 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:25:06,932 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:25:06,932 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:25:06,932 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:25:06,933 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:25:06,933 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:25:06,933 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:25:06,933 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:25:06,933 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:25:06,934 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:25:06,934 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:25:06,934 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:25:06,934 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:25:06,934 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:25:06,934 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:25:06,935 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:25:06,935 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:25:06,935 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:25:06,935 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:25:06,936 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:25:06,936 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:25:06,936 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:25:06,936 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:25:06,936 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:25:06,937 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:25:06,937 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:25:06,937 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:25:06,937 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 11:25:06,987 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:25:07,006 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:25:07,009 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:25:07,010 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:25:07,010 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:25:07,011 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/nr4_true-unreach-call.i [2019-05-23 11:25:07,065 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/333161446/efa8073742c341cfba18ffe2a54fe9f1/FLAG8e7861a13 [2019-05-23 11:25:07,482 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:25:07,483 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/nr4_true-unreach-call.i [2019-05-23 11:25:07,489 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/333161446/efa8073742c341cfba18ffe2a54fe9f1/FLAG8e7861a13 [2019-05-23 11:25:07,852 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/333161446/efa8073742c341cfba18ffe2a54fe9f1 [2019-05-23 11:25:07,862 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:25:07,864 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:25:07,865 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:07,865 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:25:07,868 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:25:07,869 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:07,872 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ca831c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:07, skipping insertion in model container [2019-05-23 11:25:07,872 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:07" (1/1) ... [2019-05-23 11:25:07,879 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:25:07,897 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:25:08,118 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:08,127 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:25:08,161 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:08,188 INFO L146 ILogger]: Completed translation [2019-05-23 11:25:08,188 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:08 WrapperNode [2019-05-23 11:25:08,188 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:08,189 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:08,189 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:25:08,189 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:25:08,196 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:08" (1/1) ... [2019-05-23 11:25:08,204 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:08" (1/1) ... [2019-05-23 11:25:08,223 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:08,224 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:25:08,224 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:25:08,224 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:25:08,234 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:08" (1/1) ... [2019-05-23 11:25:08,234 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:08" (1/1) ... [2019-05-23 11:25:08,236 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:08" (1/1) ... [2019-05-23 11:25:08,236 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:08" (1/1) ... [2019-05-23 11:25:08,244 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:08" (1/1) ... [2019-05-23 11:25:08,249 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:08" (1/1) ... [2019-05-23 11:25:08,251 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:08" (1/1) ... [2019-05-23 11:25:08,253 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:25:08,253 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:25:08,254 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:25:08,254 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:25:08,255 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:08" (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 11:25:08,401 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:25:08,401 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:25:08,401 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:25:08,401 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:25:08,401 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:25:08,402 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:25:08,854 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:25:08,854 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:25:08,856 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:08 BoogieIcfgContainer [2019-05-23 11:25:08,856 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:25:08,857 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:25:08,857 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:25:08,860 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:25:08,860 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:25:07" (1/3) ... [2019-05-23 11:25:08,861 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c60de7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:08, skipping insertion in model container [2019-05-23 11:25:08,861 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:08" (2/3) ... [2019-05-23 11:25:08,862 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c60de7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:08, skipping insertion in model container [2019-05-23 11:25:08,862 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:08" (3/3) ... [2019-05-23 11:25:08,864 INFO L146 ILogger]: Analyzing ICFG nr4_true-unreach-call.i [2019-05-23 11:25:08,873 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:25:08,880 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:25:08,896 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:25:08,922 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:25:08,923 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:25:08,923 INFO L146 ILogger]: Hoare is true [2019-05-23 11:25:08,924 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:25:08,924 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:25:08,924 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:25:08,924 INFO L146 ILogger]: Difference is false [2019-05-23 11:25:08,924 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:25:08,924 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:25:08,949 INFO L146 ILogger]: Start isEmpty. Operand 56 states. [2019-05-23 11:25:08,955 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:25:08,956 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:08,956 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] [2019-05-23 11:25:08,958 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:08,963 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:08,963 INFO L146 ILogger]: Analyzing trace with hash -864495202, now seen corresponding path program 1 times [2019-05-23 11:25:08,965 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:08,965 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:09,006 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:09,007 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:09,007 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:09,053 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:09,100 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 11:25:09,103 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:09,103 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:25:09,107 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:25:09,119 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:25:09,120 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:25:09,122 INFO L146 ILogger]: Start difference. First operand 56 states. Second operand 2 states. [2019-05-23 11:25:09,139 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:09,140 INFO L146 ILogger]: Finished difference Result 93 states and 111 transitions. [2019-05-23 11:25:09,140 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:25:09,141 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 27 [2019-05-23 11:25:09,142 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:09,151 INFO L146 ILogger]: With dead ends: 93 [2019-05-23 11:25:09,151 INFO L146 ILogger]: Without dead ends: 47 [2019-05-23 11:25:09,154 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 11:25:09,168 INFO L146 ILogger]: Start minimizeSevpa. Operand 47 states. [2019-05-23 11:25:09,183 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-05-23 11:25:09,184 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:25:09,185 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-05-23 11:25:09,187 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 27 [2019-05-23 11:25:09,187 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:09,188 INFO L146 ILogger]: Abstraction has 47 states and 51 transitions. [2019-05-23 11:25:09,188 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:25:09,188 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 51 transitions. [2019-05-23 11:25:09,189 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:25:09,189 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:09,189 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] [2019-05-23 11:25:09,190 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:09,190 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:09,191 INFO L146 ILogger]: Analyzing trace with hash 1504438016, now seen corresponding path program 1 times [2019-05-23 11:25:09,191 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:09,191 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:09,192 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:09,192 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:09,192 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:09,215 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:09,341 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 11:25:09,342 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:09,342 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:25:09,344 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:09,344 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:09,344 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:09,345 INFO L146 ILogger]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2019-05-23 11:25:09,887 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:09,888 INFO L146 ILogger]: Finished difference Result 77 states and 83 transitions. [2019-05-23 11:25:09,888 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:25:09,889 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 27 [2019-05-23 11:25:09,889 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:09,890 INFO L146 ILogger]: With dead ends: 77 [2019-05-23 11:25:09,891 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:25:09,892 INFO L146 ILogger]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:25:09,893 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:25:09,898 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 51. [2019-05-23 11:25:09,898 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:25:09,900 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2019-05-23 11:25:09,900 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 27 [2019-05-23 11:25:09,900 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:09,901 INFO L146 ILogger]: Abstraction has 51 states and 55 transitions. [2019-05-23 11:25:09,901 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:09,901 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 55 transitions. [2019-05-23 11:25:09,902 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:25:09,902 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:09,903 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] [2019-05-23 11:25:09,903 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:09,903 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:09,904 INFO L146 ILogger]: Analyzing trace with hash -903791427, now seen corresponding path program 1 times [2019-05-23 11:25:09,904 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:09,904 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:09,905 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:09,905 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:09,905 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:09,927 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:10,236 WARN L146 ILogger]: Spent 181.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 8 [2019-05-23 11:25:10,546 WARN L146 ILogger]: Spent 266.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 12 [2019-05-23 11:25:10,555 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 11:25:10,555 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:10,556 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:25:10,556 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:10,556 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:10,557 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:10,557 INFO L146 ILogger]: Start difference. First operand 51 states and 55 transitions. Second operand 5 states. [2019-05-23 11:25:10,642 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:10,642 INFO L146 ILogger]: Finished difference Result 85 states and 93 transitions. [2019-05-23 11:25:10,643 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:25:10,643 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 29 [2019-05-23 11:25:10,643 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:10,645 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:25:10,645 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:25:10,646 INFO L146 ILogger]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:10,646 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:25:10,653 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 52. [2019-05-23 11:25:10,654 INFO L146 ILogger]: Start removeUnreachable. Operand 52 states. [2019-05-23 11:25:10,655 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2019-05-23 11:25:10,655 INFO L146 ILogger]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 29 [2019-05-23 11:25:10,656 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:10,656 INFO L146 ILogger]: Abstraction has 52 states and 56 transitions. [2019-05-23 11:25:10,656 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:10,656 INFO L146 ILogger]: Start isEmpty. Operand 52 states and 56 transitions. [2019-05-23 11:25:10,657 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:25:10,657 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:10,657 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] [2019-05-23 11:25:10,658 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:10,658 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:10,659 INFO L146 ILogger]: Analyzing trace with hash -1701257046, now seen corresponding path program 1 times [2019-05-23 11:25:10,659 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:10,659 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:10,660 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,660 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:10,660 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,685 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:10,737 INFO L146 ILogger]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:10,738 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:10,738 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:25:10,738 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:25:10,739 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:25:10,739 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:25:10,739 INFO L146 ILogger]: Start difference. First operand 52 states and 56 transitions. Second operand 3 states. [2019-05-23 11:25:10,793 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:10,794 INFO L146 ILogger]: Finished difference Result 93 states and 103 transitions. [2019-05-23 11:25:10,794 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:25:10,794 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 35 [2019-05-23 11:25:10,795 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:10,795 INFO L146 ILogger]: With dead ends: 93 [2019-05-23 11:25:10,796 INFO L146 ILogger]: Without dead ends: 58 [2019-05-23 11:25:10,796 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 11:25:10,797 INFO L146 ILogger]: Start minimizeSevpa. Operand 58 states. [2019-05-23 11:25:10,801 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 58 to 53. [2019-05-23 11:25:10,801 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:25:10,802 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2019-05-23 11:25:10,803 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 35 [2019-05-23 11:25:10,803 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:10,803 INFO L146 ILogger]: Abstraction has 53 states and 57 transitions. [2019-05-23 11:25:10,803 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:25:10,804 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 57 transitions. [2019-05-23 11:25:10,805 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:25:10,805 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:10,805 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, 1] [2019-05-23 11:25:10,805 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:10,806 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:10,806 INFO L146 ILogger]: Analyzing trace with hash -1939310879, now seen corresponding path program 1 times [2019-05-23 11:25:10,806 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:10,806 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:10,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,807 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:10,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,820 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:10,960 INFO L146 ILogger]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:10,961 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:10,961 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:25:10,962 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:25:10,962 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:25:10,962 INFO L146 ILogger]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:25:10,963 INFO L146 ILogger]: Start difference. First operand 53 states and 57 transitions. Second operand 4 states. [2019-05-23 11:25:11,066 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:11,066 INFO L146 ILogger]: Finished difference Result 93 states and 102 transitions. [2019-05-23 11:25:11,067 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:25:11,067 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 41 [2019-05-23 11:25:11,067 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:11,068 INFO L146 ILogger]: With dead ends: 93 [2019-05-23 11:25:11,069 INFO L146 ILogger]: Without dead ends: 57 [2019-05-23 11:25:11,069 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:11,070 INFO L146 ILogger]: Start minimizeSevpa. Operand 57 states. [2019-05-23 11:25:11,074 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 57 to 54. [2019-05-23 11:25:11,075 INFO L146 ILogger]: Start removeUnreachable. Operand 54 states. [2019-05-23 11:25:11,078 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2019-05-23 11:25:11,078 INFO L146 ILogger]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 41 [2019-05-23 11:25:11,079 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:11,079 INFO L146 ILogger]: Abstraction has 54 states and 58 transitions. [2019-05-23 11:25:11,079 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:25:11,079 INFO L146 ILogger]: Start isEmpty. Operand 54 states and 58 transitions. [2019-05-23 11:25:11,080 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:25:11,080 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:11,081 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, 1] [2019-05-23 11:25:11,083 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:11,083 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:11,083 INFO L146 ILogger]: Analyzing trace with hash -754162047, now seen corresponding path program 1 times [2019-05-23 11:25:11,083 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:11,083 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:11,084 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:11,085 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:11,085 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:11,131 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,194 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:11,195 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:11,195 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 11:25:11,213 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:11,253 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,255 INFO L146 ILogger]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:25:11,263 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:11,284 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:11,305 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:11,306 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-05-23 11:25:11,306 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:11,306 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:11,306 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:11,307 INFO L146 ILogger]: Start difference. First operand 54 states and 58 transitions. Second operand 5 states. [2019-05-23 11:25:11,454 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:11,454 INFO L146 ILogger]: Finished difference Result 101 states and 111 transitions. [2019-05-23 11:25:11,457 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:25:11,458 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 41 [2019-05-23 11:25:11,458 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:11,458 INFO L146 ILogger]: With dead ends: 101 [2019-05-23 11:25:11,459 INFO L146 ILogger]: Without dead ends: 64 [2019-05-23 11:25:11,459 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:25:11,460 INFO L146 ILogger]: Start minimizeSevpa. Operand 64 states. [2019-05-23 11:25:11,464 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 64 to 59. [2019-05-23 11:25:11,464 INFO L146 ILogger]: Start removeUnreachable. Operand 59 states. [2019-05-23 11:25:11,465 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2019-05-23 11:25:11,465 INFO L146 ILogger]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 41 [2019-05-23 11:25:11,465 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:11,465 INFO L146 ILogger]: Abstraction has 59 states and 63 transitions. [2019-05-23 11:25:11,466 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:11,466 INFO L146 ILogger]: Start isEmpty. Operand 59 states and 63 transitions. [2019-05-23 11:25:11,467 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:25:11,467 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:11,467 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:11,468 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:11,468 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:11,468 INFO L146 ILogger]: Analyzing trace with hash 1824522104, now seen corresponding path program 1 times [2019-05-23 11:25:11,468 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:11,468 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:11,469 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:11,469 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:11,469 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:11,487 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,780 INFO L146 ILogger]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:11,780 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:11,780 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 11:25:11,797 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:11,828 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,830 INFO L146 ILogger]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:25:11,833 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:12,037 INFO L146 ILogger]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:12,057 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:12,057 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:25:12,058 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:25:12,058 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:25:12,058 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:25:12,058 INFO L146 ILogger]: Start difference. First operand 59 states and 63 transitions. Second operand 9 states. [2019-05-23 11:25:12,257 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:12,258 INFO L146 ILogger]: Finished difference Result 105 states and 114 transitions. [2019-05-23 11:25:12,259 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:25:12,259 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 47 [2019-05-23 11:25:12,259 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:12,260 INFO L146 ILogger]: With dead ends: 105 [2019-05-23 11:25:12,260 INFO L146 ILogger]: Without dead ends: 63 [2019-05-23 11:25:12,261 INFO L146 ILogger]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:25:12,261 INFO L146 ILogger]: Start minimizeSevpa. Operand 63 states. [2019-05-23 11:25:12,268 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 63 to 60. [2019-05-23 11:25:12,268 INFO L146 ILogger]: Start removeUnreachable. Operand 60 states. [2019-05-23 11:25:12,269 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2019-05-23 11:25:12,269 INFO L146 ILogger]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 47 [2019-05-23 11:25:12,269 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:12,269 INFO L146 ILogger]: Abstraction has 60 states and 64 transitions. [2019-05-23 11:25:12,270 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:25:12,270 INFO L146 ILogger]: Start isEmpty. Operand 60 states and 64 transitions. [2019-05-23 11:25:12,271 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:25:12,271 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:12,271 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:12,272 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:12,272 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:12,272 INFO L146 ILogger]: Analyzing trace with hash -1285296360, now seen corresponding path program 2 times [2019-05-23 11:25:12,272 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:12,272 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:12,273 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:12,273 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:12,273 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:12,305 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:12,404 INFO L146 ILogger]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:25:12,404 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:12,404 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 11:25:12,414 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:12,439 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:12,439 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:12,440 INFO L146 ILogger]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:25:12,442 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:12,572 INFO L146 ILogger]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:12,591 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:12,591 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2019-05-23 11:25:12,591 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:25:12,592 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:25:12,592 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:25:12,592 INFO L146 ILogger]: Start difference. First operand 60 states and 64 transitions. Second operand 10 states. [2019-05-23 11:25:12,879 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:12,880 INFO L146 ILogger]: Finished difference Result 114 states and 125 transitions. [2019-05-23 11:25:12,883 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:25:12,883 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 47 [2019-05-23 11:25:12,884 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:12,884 INFO L146 ILogger]: With dead ends: 114 [2019-05-23 11:25:12,884 INFO L146 ILogger]: Without dead ends: 71 [2019-05-23 11:25:12,885 INFO L146 ILogger]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:25:12,887 INFO L146 ILogger]: Start minimizeSevpa. Operand 71 states. [2019-05-23 11:25:12,893 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-05-23 11:25:12,893 INFO L146 ILogger]: Start removeUnreachable. Operand 71 states. [2019-05-23 11:25:12,894 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2019-05-23 11:25:12,894 INFO L146 ILogger]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 47 [2019-05-23 11:25:12,895 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:12,895 INFO L146 ILogger]: Abstraction has 71 states and 76 transitions. [2019-05-23 11:25:12,895 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:25:12,895 INFO L146 ILogger]: Start isEmpty. Operand 71 states and 76 transitions. [2019-05-23 11:25:12,897 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:25:12,897 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:12,897 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:12,897 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:12,898 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:12,898 INFO L146 ILogger]: Analyzing trace with hash -770105018, now seen corresponding path program 2 times [2019-05-23 11:25:12,898 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:12,898 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:12,899 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:12,899 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:12,899 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:12,922 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:13,218 INFO L146 ILogger]: Checked inductivity of 37 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-05-23 11:25:13,219 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:13,219 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 11:25:13,228 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:13,277 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:13,277 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:13,279 INFO L146 ILogger]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:25:13,282 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:13,520 INFO L146 ILogger]: Checked inductivity of 37 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:25:13,538 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:13,538 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2019-05-23 11:25:13,538 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:25:13,539 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:25:13,539 INFO L146 ILogger]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:25:13,539 INFO L146 ILogger]: Start difference. First operand 71 states and 76 transitions. Second operand 11 states. [2019-05-23 11:25:13,759 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:13,759 INFO L146 ILogger]: Finished difference Result 128 states and 138 transitions. [2019-05-23 11:25:13,760 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:25:13,760 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 59 [2019-05-23 11:25:13,760 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:13,761 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:25:13,761 INFO L146 ILogger]: Without dead ends: 74 [2019-05-23 11:25:13,762 INFO L146 ILogger]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:25:13,763 INFO L146 ILogger]: Start minimizeSevpa. Operand 74 states. [2019-05-23 11:25:13,772 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 74 to 70. [2019-05-23 11:25:13,772 INFO L146 ILogger]: Start removeUnreachable. Operand 70 states. [2019-05-23 11:25:13,776 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2019-05-23 11:25:13,776 INFO L146 ILogger]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 59 [2019-05-23 11:25:13,776 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:13,777 INFO L146 ILogger]: Abstraction has 70 states and 73 transitions. [2019-05-23 11:25:13,777 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:25:13,777 INFO L146 ILogger]: Start isEmpty. Operand 70 states and 73 transitions. [2019-05-23 11:25:13,778 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:25:13,778 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:13,778 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:13,779 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:13,780 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:13,780 INFO L146 ILogger]: Analyzing trace with hash 1404229862, now seen corresponding path program 3 times [2019-05-23 11:25:13,780 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:13,781 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:13,781 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:13,782 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:13,784 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:13,840 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:14,496 WARN L146 ILogger]: Spent 122.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2019-05-23 11:25:15,141 INFO L146 ILogger]: Checked inductivity of 38 backedges. 1 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:15,142 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:15,142 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 11:25:15,150 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:25:15,179 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:25:15,179 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:15,180 INFO L146 ILogger]: Trace formula consists of 94 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:25:15,184 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:15,269 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2019-05-23 11:25:15,270 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:15,285 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:15,286 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:15,287 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:35 [2019-05-23 11:25:15,482 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:15,483 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 83 [2019-05-23 11:25:15,484 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:15,534 INFO L146 ILogger]: treesize reduction 51, result has 49.0 percent of original size [2019-05-23 11:25:15,539 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:15,540 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:49 [2019-05-23 11:25:15,898 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:15,899 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 173 [2019-05-23 11:25:15,901 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:15,987 INFO L146 ILogger]: treesize reduction 124, result has 35.4 percent of original size [2019-05-23 11:25:15,988 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:15,989 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:72, output treesize:68 [2019-05-23 11:25:16,470 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:16,471 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:16,485 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:16,486 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 84 [2019-05-23 11:25:16,488 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:16,567 INFO L146 ILogger]: treesize reduction 27, result has 73.3 percent of original size [2019-05-23 11:25:16,571 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:16,571 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:64, output treesize:43 [2019-05-23 11:25:16,953 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:16,955 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:16,956 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:25:16,956 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:16,967 INFO L146 ILogger]: treesize reduction 3, result has 76.9 percent of original size [2019-05-23 11:25:16,967 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:16,968 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:7 [2019-05-23 11:25:17,025 INFO L146 ILogger]: Checked inductivity of 38 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:25:17,045 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:17,046 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18] total 35 [2019-05-23 11:25:17,046 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:25:17,046 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:25:17,047 INFO L146 ILogger]: CoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:25:17,047 INFO L146 ILogger]: Start difference. First operand 70 states and 73 transitions. Second operand 35 states. [2019-05-23 11:25:24,803 WARN L146 ILogger]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-05-23 11:25:39,271 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:39,271 INFO L146 ILogger]: Finished difference Result 200 states and 211 transitions. [2019-05-23 11:25:39,271 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:25:39,272 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 59 [2019-05-23 11:25:39,272 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:39,274 INFO L146 ILogger]: With dead ends: 200 [2019-05-23 11:25:39,274 INFO L146 ILogger]: Without dead ends: 178 [2019-05-23 11:25:39,276 INFO L146 ILogger]: 0 DeclaredPredicates, 112 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=610, Invalid=3290, Unknown=6, NotChecked=0, Total=3906 [2019-05-23 11:25:39,277 INFO L146 ILogger]: Start minimizeSevpa. Operand 178 states. [2019-05-23 11:25:39,283 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 178 to 105. [2019-05-23 11:25:39,283 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:25:39,284 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2019-05-23 11:25:39,284 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 59 [2019-05-23 11:25:39,284 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:39,285 INFO L146 ILogger]: Abstraction has 105 states and 110 transitions. [2019-05-23 11:25:39,285 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:25:39,285 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 110 transitions. [2019-05-23 11:25:39,286 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 74 [2019-05-23 11:25:39,286 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:39,286 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:39,287 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:39,287 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:39,287 INFO L146 ILogger]: Analyzing trace with hash 1353514133, now seen corresponding path program 1 times [2019-05-23 11:25:39,287 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:39,287 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:39,288 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:39,288 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:39,288 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:39,313 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:40,360 INFO L146 ILogger]: Checked inductivity of 46 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:40,360 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:40,360 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 11:25:40,369 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:40,387 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:40,388 INFO L146 ILogger]: Trace formula consists of 113 conjuncts, 35 conjunts are in the unsatisfiable core [2019-05-23 11:25:40,391 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:41,029 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2019-05-23 11:25:41,029 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:41,038 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:41,038 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:41,039 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2019-05-23 11:25:41,188 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:41,189 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2019-05-23 11:25:41,190 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:41,201 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:41,202 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:41,202 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:39 [2019-05-23 11:25:41,267 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:41,297 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:41,298 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 113 [2019-05-23 11:25:41,299 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:41,344 INFO L146 ILogger]: treesize reduction 48, result has 58.6 percent of original size [2019-05-23 11:25:41,347 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-05-23 11:25:41,348 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:47, output treesize:68 [2019-05-23 11:25:42,870 WARN L146 ILogger]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-05-23 11:25:44,422 WARN L146 ILogger]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-05-23 11:25:44,601 WARN L146 ILogger]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-05-23 11:25:46,218 WARN L146 ILogger]: Spent 846.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-05-23 11:25:46,271 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:46,272 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:46,272 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:25:46,272 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:46,276 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:46,277 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:46,277 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:3 [2019-05-23 11:25:46,432 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:46,453 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:46,453 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 43 [2019-05-23 11:25:46,453 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:25:46,455 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:25:46,456 INFO L146 ILogger]: CoverageRelationStatistics Valid=181, Invalid=1623, Unknown=2, NotChecked=0, Total=1806 [2019-05-23 11:25:46,456 INFO L146 ILogger]: Start difference. First operand 105 states and 110 transitions. Second operand 43 states. [2019-05-23 11:25:48,029 WARN L146 ILogger]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-05-23 11:25:48,262 WARN L146 ILogger]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52 [2019-05-23 11:25:48,700 WARN L146 ILogger]: Spent 197.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2019-05-23 11:25:49,039 WARN L146 ILogger]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2019-05-23 11:25:49,983 WARN L146 ILogger]: Spent 878.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-05-23 11:25:50,148 WARN L146 ILogger]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-05-23 11:25:50,320 WARN L146 ILogger]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-05-23 11:25:50,554 WARN L146 ILogger]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2019-05-23 11:25:50,765 WARN L146 ILogger]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2019-05-23 11:25:51,135 WARN L146 ILogger]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-05-23 11:25:51,531 WARN L146 ILogger]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58