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/mbpr3_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:24:59,881 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:24:59,883 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:24:59,895 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:24:59,895 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:24:59,896 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:24:59,898 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:24:59,899 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:24:59,901 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:24:59,902 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:24:59,905 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:24:59,905 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:24:59,906 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:24:59,907 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:24:59,908 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:24:59,911 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:24:59,913 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:24:59,915 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:24:59,925 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:24:59,926 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:24:59,929 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:24:59,932 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:24:59,936 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:24:59,936 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:24:59,936 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:24:59,937 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:24:59,938 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:24:59,941 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:24:59,942 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:24:59,942 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:24:59,943 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:24:59,944 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:24:59,945 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:24:59,945 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:24:59,946 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:24:59,946 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:24:59,946 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:24:59,949 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:24:59,951 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:24:59,951 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:24:59,972 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:24:59,973 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:24:59,974 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:24:59,974 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:24:59,974 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:24:59,974 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:24:59,975 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:24:59,975 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:24:59,975 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:24:59,975 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:24:59,975 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:24:59,976 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:24:59,976 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:24:59,976 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:24:59,976 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:24:59,976 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:24:59,977 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:24:59,977 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:24:59,977 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:24:59,977 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:24:59,978 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:24:59,978 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:24:59,978 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:24:59,978 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:24:59,978 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:24:59,979 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:24:59,979 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:24:59,979 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:24:59,979 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 11:25:00,014 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:25:00,029 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:25:00,033 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:25:00,034 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:25:00,035 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:25:00,036 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/mbpr3_true-unreach-call.i [2019-05-23 11:25:00,095 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009df8d41/7066099f061745b986668c872918d883/FLAG5f0ca8997 [2019-05-23 11:25:00,519 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:25:00,520 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/mbpr3_true-unreach-call.i [2019-05-23 11:25:00,527 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009df8d41/7066099f061745b986668c872918d883/FLAG5f0ca8997 [2019-05-23 11:25:00,903 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009df8d41/7066099f061745b986668c872918d883 [2019-05-23 11:25:00,912 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:25:00,914 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:25:00,915 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:00,915 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:25:00,919 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:25:00,920 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:00" (1/1) ... [2019-05-23 11:25:00,923 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9a08bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:00, skipping insertion in model container [2019-05-23 11:25:00,923 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:00" (1/1) ... [2019-05-23 11:25:00,930 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:25:00,958 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:25:01,177 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:01,181 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:25:01,214 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:01,238 INFO L146 ILogger]: Completed translation [2019-05-23 11:25:01,239 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:01 WrapperNode [2019-05-23 11:25:01,239 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:01,240 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:01,240 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:25:01,240 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:25:01,249 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:01" (1/1) ... [2019-05-23 11:25:01,259 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:01" (1/1) ... [2019-05-23 11:25:01,297 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:01,298 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:25:01,299 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:25:01,299 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:25:01,394 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:01" (1/1) ... [2019-05-23 11:25:01,394 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:01" (1/1) ... [2019-05-23 11:25:01,397 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:01" (1/1) ... [2019-05-23 11:25:01,398 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:01" (1/1) ... [2019-05-23 11:25:01,413 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:01" (1/1) ... [2019-05-23 11:25:01,421 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:01" (1/1) ... [2019-05-23 11:25:01,423 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:01" (1/1) ... [2019-05-23 11:25:01,425 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:25:01,426 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:25:01,426 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:25:01,426 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:25:01,427 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:01" (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 11:25:01,476 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:25:01,476 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:25:01,476 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:25:01,476 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:25:01,476 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:25:01,476 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:25:02,139 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:25:02,140 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:25:02,141 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:02 BoogieIcfgContainer [2019-05-23 11:25:02,141 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:25:02,142 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:25:02,142 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:25:02,145 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:25:02,146 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:25:00" (1/3) ... [2019-05-23 11:25:02,146 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b442b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:02, skipping insertion in model container [2019-05-23 11:25:02,147 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:01" (2/3) ... [2019-05-23 11:25:02,147 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b442b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:02, skipping insertion in model container [2019-05-23 11:25:02,147 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:02" (3/3) ... [2019-05-23 11:25:02,149 INFO L146 ILogger]: Analyzing ICFG mbpr3_true-unreach-call.i [2019-05-23 11:25:02,159 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:25:02,167 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:25:02,185 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:25:02,216 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:25:02,216 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:25:02,216 INFO L146 ILogger]: Hoare is true [2019-05-23 11:25:02,217 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:25:02,217 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:25:02,217 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:25:02,217 INFO L146 ILogger]: Difference is false [2019-05-23 11:25:02,217 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:25:02,218 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:25:02,236 INFO L146 ILogger]: Start isEmpty. Operand 87 states. [2019-05-23 11:25:02,243 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 34 [2019-05-23 11:25:02,243 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:02,245 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] [2019-05-23 11:25:02,247 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:02,252 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:02,252 INFO L146 ILogger]: Analyzing trace with hash -1855079047, now seen corresponding path program 1 times [2019-05-23 11:25:02,254 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:02,254 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:02,300 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:02,300 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:02,300 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:02,354 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:02,412 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 11:25:02,416 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:02,416 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:25:02,419 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:25:02,431 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:25:02,431 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:25:02,434 INFO L146 ILogger]: Start difference. First operand 87 states. Second operand 2 states. [2019-05-23 11:25:02,456 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:02,456 INFO L146 ILogger]: Finished difference Result 140 states and 163 transitions. [2019-05-23 11:25:02,457 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:25:02,458 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 33 [2019-05-23 11:25:02,458 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:02,468 INFO L146 ILogger]: With dead ends: 140 [2019-05-23 11:25:02,468 INFO L146 ILogger]: Without dead ends: 78 [2019-05-23 11:25:02,471 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 11:25:02,485 INFO L146 ILogger]: Start minimizeSevpa. Operand 78 states. [2019-05-23 11:25:02,503 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 78 to 78. [2019-05-23 11:25:02,507 INFO L146 ILogger]: Start removeUnreachable. Operand 78 states. [2019-05-23 11:25:02,509 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2019-05-23 11:25:02,511 INFO L146 ILogger]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 33 [2019-05-23 11:25:02,511 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:02,511 INFO L146 ILogger]: Abstraction has 78 states and 85 transitions. [2019-05-23 11:25:02,511 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:25:02,512 INFO L146 ILogger]: Start isEmpty. Operand 78 states and 85 transitions. [2019-05-23 11:25:02,514 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 34 [2019-05-23 11:25:02,515 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:02,516 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] [2019-05-23 11:25:02,517 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:02,517 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:02,517 INFO L146 ILogger]: Analyzing trace with hash 1183044045, now seen corresponding path program 1 times [2019-05-23 11:25:02,517 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:02,518 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:02,519 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:02,519 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:02,519 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:02,560 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:02,869 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 11:25:02,870 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:02,870 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:25:02,872 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:02,872 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:02,873 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:02,873 INFO L146 ILogger]: Start difference. First operand 78 states and 85 transitions. Second operand 5 states. [2019-05-23 11:25:03,146 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:03,147 INFO L146 ILogger]: Finished difference Result 108 states and 117 transitions. [2019-05-23 11:25:03,148 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:25:03,148 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 33 [2019-05-23 11:25:03,149 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:03,151 INFO L146 ILogger]: With dead ends: 108 [2019-05-23 11:25:03,151 INFO L146 ILogger]: Without dead ends: 106 [2019-05-23 11:25:03,155 INFO L146 ILogger]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:25:03,157 INFO L146 ILogger]: Start minimizeSevpa. Operand 106 states. [2019-05-23 11:25:03,171 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 106 to 82. [2019-05-23 11:25:03,171 INFO L146 ILogger]: Start removeUnreachable. Operand 82 states. [2019-05-23 11:25:03,173 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2019-05-23 11:25:03,176 INFO L146 ILogger]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 33 [2019-05-23 11:25:03,176 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:03,177 INFO L146 ILogger]: Abstraction has 82 states and 89 transitions. [2019-05-23 11:25:03,177 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:03,177 INFO L146 ILogger]: Start isEmpty. Operand 82 states and 89 transitions. [2019-05-23 11:25:03,179 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:25:03,179 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:03,179 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 11:25:03,180 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:03,180 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:03,180 INFO L146 ILogger]: Analyzing trace with hash -525750518, now seen corresponding path program 1 times [2019-05-23 11:25:03,181 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:03,181 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:03,182 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:03,182 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:03,182 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:03,239 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:03,737 WARN L146 ILogger]: Spent 206.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 8 [2019-05-23 11:25:03,848 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 11:25:03,848 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:03,848 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:25:03,849 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:03,849 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:03,850 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:03,850 INFO L146 ILogger]: Start difference. First operand 82 states and 89 transitions. Second operand 5 states. [2019-05-23 11:25:04,524 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:04,525 INFO L146 ILogger]: Finished difference Result 169 states and 187 transitions. [2019-05-23 11:25:04,525 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:25:04,525 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 35 [2019-05-23 11:25:04,526 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:04,527 INFO L146 ILogger]: With dead ends: 169 [2019-05-23 11:25:04,527 INFO L146 ILogger]: Without dead ends: 118 [2019-05-23 11:25:04,530 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 11:25:04,531 INFO L146 ILogger]: Start minimizeSevpa. Operand 118 states. [2019-05-23 11:25:04,547 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 118 to 85. [2019-05-23 11:25:04,547 INFO L146 ILogger]: Start removeUnreachable. Operand 85 states. [2019-05-23 11:25:04,550 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2019-05-23 11:25:04,550 INFO L146 ILogger]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 35 [2019-05-23 11:25:04,552 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:04,552 INFO L146 ILogger]: Abstraction has 85 states and 92 transitions. [2019-05-23 11:25:04,552 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:04,552 INFO L146 ILogger]: Start isEmpty. Operand 85 states and 92 transitions. [2019-05-23 11:25:04,555 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 72 [2019-05-23 11:25:04,555 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:04,555 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, 1, 1, 1, 1, 1, 1, 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 11:25:04,556 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:04,558 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:04,558 INFO L146 ILogger]: Analyzing trace with hash -604770461, now seen corresponding path program 1 times [2019-05-23 11:25:04,558 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:04,558 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:04,559 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:04,559 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:04,560 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:04,619 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:04,756 INFO L146 ILogger]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:25:04,756 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:04,756 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:25:04,757 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:25:04,757 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:25:04,757 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:25:04,757 INFO L146 ILogger]: Start difference. First operand 85 states and 92 transitions. Second operand 4 states. [2019-05-23 11:25:04,815 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:04,816 INFO L146 ILogger]: Finished difference Result 120 states and 130 transitions. [2019-05-23 11:25:04,816 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:25:04,816 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 71 [2019-05-23 11:25:04,816 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:04,817 INFO L146 ILogger]: With dead ends: 120 [2019-05-23 11:25:04,817 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:25:04,818 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:25:04,818 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:25:04,824 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 84. [2019-05-23 11:25:04,824 INFO L146 ILogger]: Start removeUnreachable. Operand 84 states. [2019-05-23 11:25:04,825 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2019-05-23 11:25:04,825 INFO L146 ILogger]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 71 [2019-05-23 11:25:04,825 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:04,826 INFO L146 ILogger]: Abstraction has 84 states and 90 transitions. [2019-05-23 11:25:04,826 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:25:04,826 INFO L146 ILogger]: Start isEmpty. Operand 84 states and 90 transitions. [2019-05-23 11:25:04,827 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 72 [2019-05-23 11:25:04,828 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:04,828 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, 1, 1, 1, 1, 1, 1, 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 11:25:04,828 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:04,828 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:04,829 INFO L146 ILogger]: Analyzing trace with hash -1366464573, now seen corresponding path program 1 times [2019-05-23 11:25:04,829 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:04,829 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:04,830 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:04,830 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:04,830 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:04,867 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:05,661 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:25:05,662 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:05,662 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 11:25:05,676 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:05,717 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:05,719 INFO L146 ILogger]: Trace formula consists of 112 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:25:05,727 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:05,928 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 16 treesize of output 12 [2019-05-23 11:25:05,928 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:05,970 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:05,971 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:05,972 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:06,042 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:06,043 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 29 treesize of output 28 [2019-05-23 11:25:06,045 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,195 WARN L146 ILogger]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-05-23 11:25:06,196 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:06,196 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,197 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:25:06,257 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:06,259 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 21 treesize of output 20 [2019-05-23 11:25:06,260 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,340 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:06,341 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,341 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:14 [2019-05-23 11:25:06,395 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:06,397 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 29 treesize of output 28 [2019-05-23 11:25:06,398 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,409 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:06,410 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,410 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:25:06,555 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 0 case distinctions, treesize of input 41 treesize of output 19 [2019-05-23 11:25:06,557 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,567 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:06,568 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,569 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:50, output treesize:22 [2019-05-23 11:25:06,597 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:06,598 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 21 treesize of output 20 [2019-05-23 11:25:06,599 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,609 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:06,610 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,610 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:14 [2019-05-23 11:25:06,671 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:06,672 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 29 treesize of output 28 [2019-05-23 11:25:06,672 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,684 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:06,684 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,685 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2019-05-23 11:25:06,733 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:06,735 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:06,739 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:06,741 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:06,741 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2019-05-23 11:25:06,742 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,755 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:06,756 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,757 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:50, output treesize:34 [2019-05-23 11:25:06,812 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:06,813 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:06,814 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 1 case distinctions, treesize of input 35 treesize of output 26 [2019-05-23 11:25:06,814 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,826 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:06,827 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:06,827 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:23 [2019-05-23 11:25:07,024 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:07,025 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 22 treesize of output 10 [2019-05-23 11:25:07,025 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:07,034 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:07,035 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:07,035 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:7 [2019-05-23 11:25:07,171 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:07,190 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:07,190 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 24 [2019-05-23 11:25:07,190 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:25:07,191 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:25:07,191 INFO L146 ILogger]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:25:07,191 INFO L146 ILogger]: Start difference. First operand 84 states and 90 transitions. Second operand 24 states. [2019-05-23 11:25:08,761 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:08,761 INFO L146 ILogger]: Finished difference Result 262 states and 282 transitions. [2019-05-23 11:25:08,769 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:25:08,769 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 71 [2019-05-23 11:25:08,770 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:08,771 INFO L146 ILogger]: With dead ends: 262 [2019-05-23 11:25:08,772 INFO L146 ILogger]: Without dead ends: 197 [2019-05-23 11:25:08,773 INFO L146 ILogger]: 0 DeclaredPredicates, 121 GetRequests, 67 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=473, Invalid=1689, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:25:08,776 INFO L146 ILogger]: Start minimizeSevpa. Operand 197 states. [2019-05-23 11:25:08,787 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 197 to 87. [2019-05-23 11:25:08,788 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:25:08,788 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2019-05-23 11:25:08,788 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 71 [2019-05-23 11:25:08,793 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:08,794 INFO L146 ILogger]: Abstraction has 87 states and 92 transitions. [2019-05-23 11:25:08,794 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:25:08,794 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 92 transitions. [2019-05-23 11:25:08,795 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:25:08,795 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:08,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:08,798 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:08,798 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:08,798 INFO L146 ILogger]: Analyzing trace with hash 683246578, now seen corresponding path program 1 times [2019-05-23 11:25:08,799 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:08,799 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:08,800 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:08,800 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:08,800 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:08,861 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:09,500 INFO L146 ILogger]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:09,501 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:09,501 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 11:25:09,509 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:09,544 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:09,545 INFO L146 ILogger]: Trace formula consists of 131 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:25:09,549 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:09,682 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 16 treesize of output 12 [2019-05-23 11:25:09,683 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:09,691 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:09,691 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:09,692 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:09,739 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:09,740 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 29 treesize of output 28 [2019-05-23 11:25:09,740 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:09,749 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:09,750 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:09,750 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:25:09,834 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:09,835 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 23 treesize of output 22 [2019-05-23 11:25:09,836 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:09,953 WARN L146 ILogger]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-05-23 11:25:09,954 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:09,954 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:09,955 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:16 [2019-05-23 11:25:10,036 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:10,037 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 29 treesize of output 28 [2019-05-23 11:25:10,038 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:10,050 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:10,051 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:10,051 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2019-05-23 11:25:10,115 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:10,116 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:10,117 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 1 case distinctions, treesize of input 53 treesize of output 34 [2019-05-23 11:25:10,118 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:10,128 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:10,129 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:10,129 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:62, output treesize:34 [2019-05-23 11:25:10,136 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:10,137 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:10,138 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:10,138 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:10,139 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2019-05-23 11:25:10,140 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:10,148 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:10,149 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:10,149 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:25 [2019-05-23 11:25:10,286 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:10,286 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 22 treesize of output 10 [2019-05-23 11:25:10,287 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:10,289 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:10,290 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:10,290 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:7 [2019-05-23 11:25:10,331 INFO L146 ILogger]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:25:10,350 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:10,350 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 24 [2019-05-23 11:25:10,350 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:25:10,351 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:25:10,351 INFO L146 ILogger]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:25:10,351 INFO L146 ILogger]: Start difference. First operand 87 states and 92 transitions. Second operand 24 states. [2019-05-23 11:25:11,326 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:11,327 INFO L146 ILogger]: Finished difference Result 232 states and 245 transitions. [2019-05-23 11:25:11,330 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:25:11,330 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 85 [2019-05-23 11:25:11,331 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:11,332 INFO L146 ILogger]: With dead ends: 232 [2019-05-23 11:25:11,332 INFO L146 ILogger]: Without dead ends: 178 [2019-05-23 11:25:11,333 INFO L146 ILogger]: 0 DeclaredPredicates, 123 GetRequests, 80 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:25:11,334 INFO L146 ILogger]: Start minimizeSevpa. Operand 178 states. [2019-05-23 11:25:11,342 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 178 to 113. [2019-05-23 11:25:11,342 INFO L146 ILogger]: Start removeUnreachable. Operand 113 states. [2019-05-23 11:25:11,343 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 113 states to 113 states and 118 transitions. [2019-05-23 11:25:11,343 INFO L146 ILogger]: Start accepts. Automaton has 113 states and 118 transitions. Word has length 85 [2019-05-23 11:25:11,344 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:11,344 INFO L146 ILogger]: Abstraction has 113 states and 118 transitions. [2019-05-23 11:25:11,344 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:25:11,344 INFO L146 ILogger]: Start isEmpty. Operand 113 states and 118 transitions. [2019-05-23 11:25:11,346 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 98 [2019-05-23 11:25:11,346 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:11,346 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:11,346 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:11,347 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:11,347 INFO L146 ILogger]: Analyzing trace with hash 1024682437, now seen corresponding path program 2 times [2019-05-23 11:25:11,347 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:11,347 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:11,348 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:11,348 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:11,348 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:11,364 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,936 INFO L146 ILogger]: Checked inductivity of 24 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:25:11,936 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:11,937 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 11:25:11,945 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:11,976 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:11,976 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,977 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:25:11,980 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:12,406 INFO L146 ILogger]: Checked inductivity of 24 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:25:12,425 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:12,425 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2019-05-23 11:25:12,425 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:25:12,426 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:25:12,426 INFO L146 ILogger]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:25:12,426 INFO L146 ILogger]: Start difference. First operand 113 states and 118 transitions. Second operand 20 states. [2019-05-23 11:25:13,201 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:13,201 INFO L146 ILogger]: Finished difference Result 276 states and 287 transitions. [2019-05-23 11:25:13,203 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:25:13,203 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 97 [2019-05-23 11:25:13,204 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:13,206 INFO L146 ILogger]: With dead ends: 276 [2019-05-23 11:25:13,206 INFO L146 ILogger]: Without dead ends: 237 [2019-05-23 11:25:13,207 INFO L146 ILogger]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=239, Invalid=753, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:25:13,207 INFO L146 ILogger]: Start minimizeSevpa. Operand 237 states. [2019-05-23 11:25:13,220 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 237 to 153. [2019-05-23 11:25:13,224 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:25:13,225 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 160 transitions. [2019-05-23 11:25:13,225 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 160 transitions. Word has length 97 [2019-05-23 11:25:13,227 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:13,227 INFO L146 ILogger]: Abstraction has 153 states and 160 transitions. [2019-05-23 11:25:13,227 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:25:13,227 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 160 transitions. [2019-05-23 11:25:13,231 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 100 [2019-05-23 11:25:13,234 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:13,234 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:13,234 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:13,235 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:13,235 INFO L146 ILogger]: Analyzing trace with hash -456318495, now seen corresponding path program 3 times [2019-05-23 11:25:13,235 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:13,235 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:13,236 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:13,236 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:13,236 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:13,266 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:13,552 INFO L146 ILogger]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:25:13,552 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:13,552 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 11:25:13,560 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:25:13,622 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:25:13,623 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:13,624 INFO L146 ILogger]: Trace formula consists of 150 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:25:13,632 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:13,784 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 16 treesize of output 12 [2019-05-23 11:25:13,784 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:13,789 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:13,789 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:13,789 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-05-23 11:25:13,834 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:13,835 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:13,836 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 1 case distinctions, treesize of input 38 treesize of output 28 [2019-05-23 11:25:13,837 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:13,843 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:13,843 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:13,844 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:19 [2019-05-23 11:25:13,850 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:13,850 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 21 treesize of output 20 [2019-05-23 11:25:13,851 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:13,856 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:13,856 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:13,857 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:13 [2019-05-23 11:25:13,989 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:25:13,989 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:13,990 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:13,990 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:13,990 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:25:14,043 INFO L146 ILogger]: Checked inductivity of 33 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:25:14,061 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:14,062 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2019-05-23 11:25:14,062 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:25:14,062 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:25:14,063 INFO L146 ILogger]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:25:14,063 INFO L146 ILogger]: Start difference. First operand 153 states and 160 transitions. Second operand 25 states. [2019-05-23 11:25:15,311 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:15,312 INFO L146 ILogger]: Finished difference Result 264 states and 275 transitions. [2019-05-23 11:25:15,312 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:25:15,312 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 99 [2019-05-23 11:25:15,313 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:15,314 INFO L146 ILogger]: With dead ends: 264 [2019-05-23 11:25:15,315 INFO L146 ILogger]: Without dead ends: 262 [2019-05-23 11:25:15,316 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 91 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2019-05-23 11:25:15,317 INFO L146 ILogger]: Start minimizeSevpa. Operand 262 states. [2019-05-23 11:25:15,325 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 262 to 193. [2019-05-23 11:25:15,326 INFO L146 ILogger]: Start removeUnreachable. Operand 193 states. [2019-05-23 11:25:15,327 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 193 states to 193 states and 203 transitions. [2019-05-23 11:25:15,327 INFO L146 ILogger]: Start accepts. Automaton has 193 states and 203 transitions. Word has length 99 [2019-05-23 11:25:15,327 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:15,327 INFO L146 ILogger]: Abstraction has 193 states and 203 transitions. [2019-05-23 11:25:15,327 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:25:15,328 INFO L146 ILogger]: Start isEmpty. Operand 193 states and 203 transitions. [2019-05-23 11:25:15,329 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:25:15,329 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:15,329 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:15,329 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:15,330 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:15,330 INFO L146 ILogger]: Analyzing trace with hash 1848151608, now seen corresponding path program 4 times [2019-05-23 11:25:15,330 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:15,330 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:15,331 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:15,331 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:15,331 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:15,344 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:15,832 WARN L146 ILogger]: Spent 179.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2019-05-23 11:25:16,164 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:25:16,164 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:16,164 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 11:25:16,173 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:25:16,197 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:25:16,197 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:16,198 INFO L146 ILogger]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:25:16,201 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:16,418 INFO L146 ILogger]: Checked inductivity of 37 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:25:16,436 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:16,437 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2019-05-23 11:25:16,437 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:25:16,437 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:25:16,438 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:25:16,438 INFO L146 ILogger]: Start difference. First operand 193 states and 203 transitions. Second operand 18 states. [2019-05-23 11:25:17,358 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:17,359 INFO L146 ILogger]: Finished difference Result 390 states and 409 transitions. [2019-05-23 11:25:17,359 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:25:17,359 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 109 [2019-05-23 11:25:17,360 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:17,362 INFO L146 ILogger]: With dead ends: 390 [2019-05-23 11:25:17,362 INFO L146 ILogger]: Without dead ends: 282 [2019-05-23 11:25:17,364 INFO L146 ILogger]: 0 DeclaredPredicates, 137 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:25:17,364 INFO L146 ILogger]: Start minimizeSevpa. Operand 282 states. [2019-05-23 11:25:17,372 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 282 to 205. [2019-05-23 11:25:17,373 INFO L146 ILogger]: Start removeUnreachable. Operand 205 states. [2019-05-23 11:25:17,373 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 205 states to 205 states and 215 transitions. [2019-05-23 11:25:17,374 INFO L146 ILogger]: Start accepts. Automaton has 205 states and 215 transitions. Word has length 109 [2019-05-23 11:25:17,374 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:17,374 INFO L146 ILogger]: Abstraction has 205 states and 215 transitions. [2019-05-23 11:25:17,374 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:25:17,374 INFO L146 ILogger]: Start isEmpty. Operand 205 states and 215 transitions. [2019-05-23 11:25:17,375 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:25:17,375 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:17,376 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:17,376 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:17,376 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:17,376 INFO L146 ILogger]: Analyzing trace with hash -140365424, now seen corresponding path program 5 times [2019-05-23 11:25:17,376 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:17,377 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:17,377 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:17,377 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:17,378 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:17,390 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:17,650 WARN L146 ILogger]: Spent 153.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 9 [2019-05-23 11:25:18,335 INFO L146 ILogger]: Checked inductivity of 69 backedges. 39 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:25:18,335 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:18,335 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 11:25:18,344 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:25:18,413 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:25:18,414 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:18,415 INFO L146 ILogger]: Trace formula consists of 169 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:25:18,418 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:18,512 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 16 treesize of output 12 [2019-05-23 11:25:18,512 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:18,553 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:18,553 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:18,553 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-05-23 11:25:18,638 INFO L146 ILogger]: treesize reduction 60, result has 16.7 percent of original size [2019-05-23 11:25:18,639 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 2 case distinctions, treesize of input 38 treesize of output 28 [2019-05-23 11:25:18,639 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:18,644 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:18,645 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:18,645 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:19 [2019-05-23 11:25:18,668 INFO L146 ILogger]: treesize reduction 23, result has 28.1 percent of original size [2019-05-23 11:25:18,668 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 21 treesize of output 20 [2019-05-23 11:25:18,669 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:18,674 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:18,674 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:18,674 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:13 [2019-05-23 11:25:18,791 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-05-23 11:25:18,792 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:18,795 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:18,795 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 11:25:18,795 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2019-05-23 11:25:18,876 INFO L146 ILogger]: Checked inductivity of 69 backedges. 40 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:25:18,895 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:18,895 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2019-05-23 11:25:18,895 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:25:18,896 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:25:18,896 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:25:18,896 INFO L146 ILogger]: Start difference. First operand 205 states and 215 transitions. Second operand 26 states. [2019-05-23 11:25:20,848 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:20,848 INFO L146 ILogger]: Finished difference Result 285 states and 296 transitions. [2019-05-23 11:25:20,848 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:25:20,848 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 113 [2019-05-23 11:25:20,849 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:20,849 INFO L146 ILogger]: With dead ends: 285 [2019-05-23 11:25:20,849 INFO L146 ILogger]: Without dead ends: 179 [2019-05-23 11:25:20,851 INFO L146 ILogger]: 0 DeclaredPredicates, 160 GetRequests, 102 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=521, Invalid=2559, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:25:20,852 INFO L146 ILogger]: Start minimizeSevpa. Operand 179 states. [2019-05-23 11:25:20,857 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 179 to 158. [2019-05-23 11:25:20,857 INFO L146 ILogger]: Start removeUnreachable. Operand 158 states. [2019-05-23 11:25:20,858 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 158 states to 158 states and 164 transitions. [2019-05-23 11:25:20,858 INFO L146 ILogger]: Start accepts. Automaton has 158 states and 164 transitions. Word has length 113 [2019-05-23 11:25:20,858 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:20,858 INFO L146 ILogger]: Abstraction has 158 states and 164 transitions. [2019-05-23 11:25:20,858 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:25:20,858 INFO L146 ILogger]: Start isEmpty. Operand 158 states and 164 transitions. [2019-05-23 11:25:20,860 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 122 [2019-05-23 11:25:20,860 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:20,860 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:20,860 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:20,860 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:20,860 INFO L146 ILogger]: Analyzing trace with hash 1351113835, now seen corresponding path program 6 times [2019-05-23 11:25:20,861 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:20,861 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:20,861 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:20,862 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:20,862 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:20,882 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:21,559 WARN L146 ILogger]: Spent 133.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2019-05-23 11:25:22,245 INFO L146 ILogger]: Checked inductivity of 50 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:25:22,245 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:22,245 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:25:22,255 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:25:22,295 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:25:22,295 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:22,297 INFO L146 ILogger]: Trace formula consists of 179 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:25:22,299 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:22,508 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 16 treesize of output 12 [2019-05-23 11:25:22,509 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:22,520 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:22,520 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:22,520 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2019-05-23 11:25:22,580 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:22,581 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 29 treesize of output 28 [2019-05-23 11:25:22,582 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:22,598 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:22,599 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:22,599 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:25 [2019-05-23 11:25:22,614 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:22,615 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 29 treesize of output 28 [2019-05-23 11:25:22,615 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:22,633 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:22,634 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:22,634 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:25 [2019-05-23 11:25:22,782 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:22,783 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 32 treesize of output 25 [2019-05-23 11:25:22,783 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:22,794 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:22,794 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:22,795 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2019-05-23 11:25:22,910 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:22,932 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:22,953 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:22,973 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:22,974 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 40 [2019-05-23 11:25:22,974 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,006 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,007 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,007 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:37 [2019-05-23 11:25:23,013 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,017 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,018 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,019 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,020 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2019-05-23 11:25:23,020 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,028 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,029 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,029 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:31 [2019-05-23 11:25:23,108 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,109 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,110 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,111 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,111 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 37 [2019-05-23 11:25:23,111 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,124 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,124 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,124 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2019-05-23 11:25:23,319 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,321 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,322 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:25:23,323 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,325 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,325 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 58 [2019-05-23 11:25:23,326 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,363 INFO L146 ILogger]: treesize reduction 9, result has 85.2 percent of original size [2019-05-23 11:25:23,364 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,364 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:74, output treesize:49 [2019-05-23 11:25:23,417 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,418 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,419 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,421 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,422 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,423 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,424 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,425 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 55 [2019-05-23 11:25:23,425 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,441 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,441 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,441 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:49 [2019-05-23 11:25:23,546 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,547 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,548 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,549 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,550 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,551 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,553 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,553 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 49 [2019-05-23 11:25:23,554 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,571 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,571 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,572 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:59, output treesize:55 [2019-05-23 11:25:23,626 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,627 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:25:23,629 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,630 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,631 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,631 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,633 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,634 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,635 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 64 [2019-05-23 11:25:23,636 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,689 INFO L146 ILogger]: treesize reduction 9, result has 85.2 percent of original size [2019-05-23 11:25:23,690 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,690 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:40 [2019-05-23 11:25:23,789 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,790 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,803 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,804 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,805 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,805 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:23,806 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,807 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2019-05-23 11:25:23,808 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,972 WARN L146 ILogger]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-05-23 11:25:23,972 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:23,973 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:23,973 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:34 [2019-05-23 11:25:24,269 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:24,269 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2019-05-23 11:25:24,269 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:24,272 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:24,273 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:24,273 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:7 [2019-05-23 11:25:24,351 INFO L146 ILogger]: Checked inductivity of 50 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:25:24,370 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:24,370 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 49 [2019-05-23 11:25:24,370 INFO L146 ILogger]: Interpolant automaton has 49 states [2019-05-23 11:25:24,371 INFO L146 ILogger]: Constructing interpolant automaton starting with 49 interpolants. [2019-05-23 11:25:24,372 INFO L146 ILogger]: CoverageRelationStatistics Valid=319, Invalid=2033, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:25:24,372 INFO L146 ILogger]: Start difference. First operand 158 states and 164 transitions. Second operand 49 states. [2019-05-23 11:25:30,060 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:30,060 INFO L146 ILogger]: Finished difference Result 305 states and 315 transitions. [2019-05-23 11:25:30,061 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:25:30,061 INFO L146 ILogger]: Start accepts. Automaton has 49 states. Word has length 121 [2019-05-23 11:25:30,061 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:30,062 INFO L146 ILogger]: With dead ends: 305 [2019-05-23 11:25:30,062 INFO L146 ILogger]: Without dead ends: 265 [2019-05-23 11:25:30,066 INFO L146 ILogger]: 0 DeclaredPredicates, 220 GetRequests, 108 SyntacticMatches, 12 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3028 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1841, Invalid=8461, Unknown=0, NotChecked=0, Total=10302 [2019-05-23 11:25:30,067 INFO L146 ILogger]: Start minimizeSevpa. Operand 265 states. [2019-05-23 11:25:30,071 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 265 to 152. [2019-05-23 11:25:30,071 INFO L146 ILogger]: Start removeUnreachable. Operand 152 states. [2019-05-23 11:25:30,072 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2019-05-23 11:25:30,072 INFO L146 ILogger]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 121 [2019-05-23 11:25:30,072 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:30,073 INFO L146 ILogger]: Abstraction has 152 states and 156 transitions. [2019-05-23 11:25:30,073 INFO L146 ILogger]: Interpolant automaton has 49 states. [2019-05-23 11:25:30,073 INFO L146 ILogger]: Start isEmpty. Operand 152 states and 156 transitions. [2019-05-23 11:25:30,074 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:25:30,074 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:30,074 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:30,075 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:30,075 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:30,075 INFO L146 ILogger]: Analyzing trace with hash -446551610, now seen corresponding path program 7 times [2019-05-23 11:25:30,075 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:30,075 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:30,076 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:30,076 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:30,076 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:30,106 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:32,298 INFO L146 ILogger]: Checked inductivity of 110 backedges. 14 proven. 87 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:25:32,298 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:32,299 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 11:25:32,307 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:32,345 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:32,347 INFO L146 ILogger]: Trace formula consists of 220 conjuncts, 56 conjunts are in the unsatisfiable core [2019-05-23 11:25:32,349 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:33,114 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 16 treesize of output 12 [2019-05-23 11:25:33,114 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,123 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,123 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,124 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:33,161 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,162 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 29 treesize of output 28 [2019-05-23 11:25:33,163 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,173 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,173 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,174 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:25:33,178 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,179 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 23 treesize of output 22 [2019-05-23 11:25:33,179 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,188 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,188 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,188 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:16 [2019-05-23 11:25:33,262 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,263 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 26 treesize of output 25 [2019-05-23 11:25:33,263 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,271 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,272 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,272 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-05-23 11:25:33,327 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,328 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,331 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,332 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,332 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2019-05-23 11:25:33,333 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,353 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,353 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,354 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:31 [2019-05-23 11:25:33,361 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,362 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,369 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,371 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,371 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2019-05-23 11:25:33,371 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,382 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,383 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,383 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:31 [2019-05-23 11:25:33,483 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,484 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,485 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,486 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,486 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2019-05-23 11:25:33,486 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,496 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,496 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,496 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2019-05-23 11:25:33,606 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:25:33,607 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,607 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,609 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,610 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,611 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 55 [2019-05-23 11:25:33,612 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,635 INFO L146 ILogger]: treesize reduction 9, result has 82.7 percent of original size [2019-05-23 11:25:33,636 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,636 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:40 [2019-05-23 11:25:33,683 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,684 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,685 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,685 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,686 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,687 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,688 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,688 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 43 [2019-05-23 11:25:33,688 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,698 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,699 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,699 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:31 [2019-05-23 11:25:33,823 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,823 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,824 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,825 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,826 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,826 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,827 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,828 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2019-05-23 11:25:33,828 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,840 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,840 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,841 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2019-05-23 11:25:33,908 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,909 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,910 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,910 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:25:33,911 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,912 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,913 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,914 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,915 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 61 [2019-05-23 11:25:33,916 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,941 INFO L146 ILogger]: treesize reduction 9, result has 82.7 percent of original size [2019-05-23 11:25:33,941 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,942 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:62, output treesize:31 [2019-05-23 11:25:33,995 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,996 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,998 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,999 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,999 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2019-05-23 11:25:34,000 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,014 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:34,015 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,015 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:31 [2019-05-23 11:25:34,138 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:34,139 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:34,140 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:34,141 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:34,142 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2019-05-23 11:25:34,142 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,153 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:34,154 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,154 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2019-05-23 11:25:34,215 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:34,217 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:34,218 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:34,219 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:34,220 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:34,221 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:34,222 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:34,223 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2019-05-23 11:25:34,224 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,237 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:34,238 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,238 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:40 [2019-05-23 11:25:34,307 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:34,311 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:34,312 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:34,313 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:34,313 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2019-05-23 11:25:34,314 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,333 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:34,333 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,334 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:34 [2019-05-23 11:25:34,851 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:34,852 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2019-05-23 11:25:34,853 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,857 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:34,857 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:34,857 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:7 [2019-05-23 11:25:34,990 INFO L146 ILogger]: Checked inductivity of 110 backedges. 14 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:35,009 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:35,009 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 33] total 57 [2019-05-23 11:25:35,010 INFO L146 ILogger]: Interpolant automaton has 57 states [2019-05-23 11:25:35,010 INFO L146 ILogger]: Constructing interpolant automaton starting with 57 interpolants. [2019-05-23 11:25:35,012 INFO L146 ILogger]: CoverageRelationStatistics Valid=293, Invalid=2899, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:25:35,012 INFO L146 ILogger]: Start difference. First operand 152 states and 156 transitions. Second operand 57 states. [2019-05-23 11:25:41,282 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-05-23 11:25:44,553 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:44,553 INFO L146 ILogger]: Finished difference Result 428 states and 440 transitions. [2019-05-23 11:25:44,553 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2019-05-23 11:25:44,553 INFO L146 ILogger]: Start accepts. Automaton has 57 states. Word has length 151 [2019-05-23 11:25:44,554 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:44,556 INFO L146 ILogger]: With dead ends: 428 [2019-05-23 11:25:44,556 INFO L146 ILogger]: Without dead ends: 406 [2019-05-23 11:25:44,561 INFO L146 ILogger]: 0 DeclaredPredicates, 281 GetRequests, 125 SyntacticMatches, 23 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5905 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2117, Invalid=15973, Unknown=0, NotChecked=0, Total=18090 [2019-05-23 11:25:44,562 INFO L146 ILogger]: Start minimizeSevpa. Operand 406 states. [2019-05-23 11:25:44,569 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 406 to 213. [2019-05-23 11:25:44,569 INFO L146 ILogger]: Start removeUnreachable. Operand 213 states. [2019-05-23 11:25:44,570 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 213 states to 213 states and 218 transitions. [2019-05-23 11:25:44,570 INFO L146 ILogger]: Start accepts. Automaton has 213 states and 218 transitions. Word has length 151 [2019-05-23 11:25:44,571 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:44,571 INFO L146 ILogger]: Abstraction has 213 states and 218 transitions. [2019-05-23 11:25:44,571 INFO L146 ILogger]: Interpolant automaton has 57 states. [2019-05-23 11:25:44,571 INFO L146 ILogger]: Start isEmpty. Operand 213 states and 218 transitions. [2019-05-23 11:25:44,572 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 164 [2019-05-23 11:25:44,573 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:44,573 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:44,573 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:44,573 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:44,574 INFO L146 ILogger]: Analyzing trace with hash -799207719, now seen corresponding path program 8 times [2019-05-23 11:25:44,574 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:44,574 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:44,575 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:44,576 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:44,576 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:44,592 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:45,202 INFO L146 ILogger]: Checked inductivity of 135 backedges. 27 proven. 26 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-05-23 11:25:45,202 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:45,202 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 11:25:45,211 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:45,254 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:45,255 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:45,256 INFO L146 ILogger]: Trace formula consists of 236 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:25:45,257 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:45,542 INFO L146 ILogger]: Checked inductivity of 135 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-05-23 11:25:45,560 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:45,560 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 28 [2019-05-23 11:25:45,561 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:25:45,561 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:25:45,561 INFO L146 ILogger]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:25:45,562 INFO L146 ILogger]: Start difference. First operand 213 states and 218 transitions. Second operand 28 states. [2019-05-23 11:25:46,752 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:46,752 INFO L146 ILogger]: Finished difference Result 459 states and 471 transitions. [2019-05-23 11:25:46,752 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:25:46,752 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 163 [2019-05-23 11:25:46,752 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:46,754 INFO L146 ILogger]: With dead ends: 459 [2019-05-23 11:25:46,754 INFO L146 ILogger]: Without dead ends: 390 [2019-05-23 11:25:46,755 INFO L146 ILogger]: 0 DeclaredPredicates, 206 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=545, Invalid=2317, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:25:46,755 INFO L146 ILogger]: Start minimizeSevpa. Operand 390 states. [2019-05-23 11:25:46,764 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 390 to 289. [2019-05-23 11:25:46,764 INFO L146 ILogger]: Start removeUnreachable. Operand 289 states. [2019-05-23 11:25:46,765 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 289 states to 289 states and 297 transitions. [2019-05-23 11:25:46,765 INFO L146 ILogger]: Start accepts. Automaton has 289 states and 297 transitions. Word has length 163 [2019-05-23 11:25:46,765 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:46,766 INFO L146 ILogger]: Abstraction has 289 states and 297 transitions. [2019-05-23 11:25:46,766 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:25:46,766 INFO L146 ILogger]: Start isEmpty. Operand 289 states and 297 transitions. [2019-05-23 11:25:46,767 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 166 [2019-05-23 11:25:46,768 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:46,768 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:46,768 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:46,768 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:46,768 INFO L146 ILogger]: Analyzing trace with hash 816121013, now seen corresponding path program 9 times [2019-05-23 11:25:46,769 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:46,769 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:46,769 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:46,769 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:46,770 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:46,801 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:47,628 WARN L146 ILogger]: Spent 209.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 10 [2019-05-23 11:25:50,032 INFO L146 ILogger]: Checked inductivity of 160 backedges. 18 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:50,033 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:50,033 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 11:25:50,041 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:25:50,149 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:25:50,149 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:50,153 INFO L146 ILogger]: Trace formula consists of 239 conjuncts, 55 conjunts are in the unsatisfiable core [2019-05-23 11:25:50,157 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:50,391 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 16 treesize of output 12 [2019-05-23 11:25:50,391 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,400 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,400 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,401 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:50,445 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,446 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 29 treesize of output 28 [2019-05-23 11:25:50,446 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,457 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,457 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,458 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:25:50,462 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,463 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 23 treesize of output 22 [2019-05-23 11:25:50,464 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,472 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,472 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,473 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:16 [2019-05-23 11:25:50,553 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,553 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 26 treesize of output 25 [2019-05-23 11:25:50,554 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,564 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,565 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,565 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-05-23 11:25:50,618 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,618 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,619 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,620 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,620 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2019-05-23 11:25:50,620 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,632 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,632 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,633 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:31 [2019-05-23 11:25:50,637 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,638 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,646 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,647 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,647 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2019-05-23 11:25:50,648 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,659 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,660 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,660 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:31 [2019-05-23 11:25:50,762 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,763 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,764 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,764 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,765 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2019-05-23 11:25:50,765 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,777 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,777 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,777 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2019-05-23 11:25:50,900 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,901 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:25:50,902 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,903 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:50,908 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:50,908 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 58 [2019-05-23 11:25:50,909 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,937 INFO L146 ILogger]: treesize reduction 9, result has 83.6 percent of original size [2019-05-23 11:25:50,938 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:50,938 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:43 [2019-05-23 11:25:51,051 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:51,053 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:51,054 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:51,055 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:51,056 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:51,057 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:51,058 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:51,058 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 46 [2019-05-23 11:25:51,058 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:51,068 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:51,069 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:51,069 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:34 [2019-05-23 11:25:51,639 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:51,640 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2019-05-23 11:25:51,640 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:51,643 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:51,643 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:25:51,643 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:7 [2019-05-23 11:25:51,795 INFO L146 ILogger]: Checked inductivity of 160 backedges. 18 proven. 140 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:25:51,815 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:51,815 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 29] total 61 [2019-05-23 11:25:51,815 INFO L146 ILogger]: Interpolant automaton has 61 states [2019-05-23 11:25:51,816 INFO L146 ILogger]: Constructing interpolant automaton starting with 61 interpolants. [2019-05-23 11:25:51,817 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=3372, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:25:51,817 INFO L146 ILogger]: Start difference. First operand 289 states and 297 transitions. Second operand 61 states. [2019-05-23 11:25:57,211 WARN L146 ILogger]: Spent 201.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2019-05-23 11:26:01,344 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:01,345 INFO L146 ILogger]: Finished difference Result 380 states and 391 transitions. [2019-05-23 11:26:01,345 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-05-23 11:26:01,345 INFO L146 ILogger]: Start accepts. Automaton has 61 states. Word has length 165 [2019-05-23 11:26:01,345 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:01,347 INFO L146 ILogger]: With dead ends: 380 [2019-05-23 11:26:01,347 INFO L146 ILogger]: Without dead ends: 358 [2019-05-23 11:26:01,349 INFO L146 ILogger]: 0 DeclaredPredicates, 274 GetRequests, 140 SyntacticMatches, 17 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4012 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1947, Invalid=12095, Unknown=0, NotChecked=0, Total=14042 [2019-05-23 11:26:01,350 INFO L146 ILogger]: Start minimizeSevpa. Operand 358 states. [2019-05-23 11:26:01,359 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 358 to 303. [2019-05-23 11:26:01,359 INFO L146 ILogger]: Start removeUnreachable. Operand 303 states. [2019-05-23 11:26:01,360 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 303 states to 303 states and 311 transitions. [2019-05-23 11:26:01,360 INFO L146 ILogger]: Start accepts. Automaton has 303 states and 311 transitions. Word has length 165 [2019-05-23 11:26:01,360 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:01,361 INFO L146 ILogger]: Abstraction has 303 states and 311 transitions. [2019-05-23 11:26:01,361 INFO L146 ILogger]: Interpolant automaton has 61 states. [2019-05-23 11:26:01,361 INFO L146 ILogger]: Start isEmpty. Operand 303 states and 311 transitions. [2019-05-23 11:26:01,362 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 180 [2019-05-23 11:26:01,362 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:01,362 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:01,362 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:01,363 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:01,363 INFO L146 ILogger]: Analyzing trace with hash 1555730788, now seen corresponding path program 10 times [2019-05-23 11:26:01,363 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:01,363 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:01,364 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:01,364 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:01,364 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:01,387 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:02,682 INFO L146 ILogger]: Checked inductivity of 224 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:26:02,683 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:02,683 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 11:26:02,692 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:02,736 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:02,736 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:02,738 INFO L146 ILogger]: Trace formula consists of 258 conjuncts, 47 conjunts are in the unsatisfiable core [2019-05-23 11:26:02,740 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:02,916 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 16 treesize of output 12 [2019-05-23 11:26:02,917 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:02,923 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:02,924 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:02,924 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-05-23 11:26:03,030 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:03,031 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 29 treesize of output 28 [2019-05-23 11:26:03,031 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:03,143 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-05-23 11:26:03,144 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:03,144 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:03,145 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:03,209 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:03,210 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 23 treesize of output 22 [2019-05-23 11:26:03,210 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:03,312 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-05-23 11:26:03,312 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:03,313 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:03,313 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:13 [2019-05-23 11:26:04,576 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:26:04,577 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:04,578 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:04,578 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:04,579 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:26:04,695 INFO L146 ILogger]: Checked inductivity of 224 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:26:04,714 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:04,714 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23] total 48 [2019-05-23 11:26:04,715 INFO L146 ILogger]: Interpolant automaton has 48 states [2019-05-23 11:26:04,715 INFO L146 ILogger]: Constructing interpolant automaton starting with 48 interpolants. [2019-05-23 11:26:04,715 INFO L146 ILogger]: CoverageRelationStatistics Valid=169, Invalid=2087, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:26:04,715 INFO L146 ILogger]: Start difference. First operand 303 states and 311 transitions. Second operand 48 states.