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/pnr3_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:25:28,889 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:25:28,891 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:25:28,906 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:25:28,907 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:25:28,908 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:25:28,912 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:25:28,914 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:25:28,916 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:25:28,918 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:25:28,919 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:25:28,920 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:25:28,921 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:25:28,922 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:25:28,923 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:25:28,924 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:25:28,924 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:25:28,926 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:25:28,928 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:25:28,930 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:25:28,931 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:25:28,932 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:25:28,934 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:25:28,935 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:25:28,935 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:25:28,936 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:25:28,936 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:25:28,937 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:25:28,937 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:25:28,938 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:25:28,939 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:25:28,940 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:25:28,941 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:25:28,941 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:25:28,942 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:25:28,942 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:25:28,942 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:25:28,943 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:25:28,944 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:25:28,944 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:25:28,960 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:25:28,962 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:25:28,963 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:25:28,963 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:25:28,963 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:25:28,964 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:25:28,964 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:25:28,965 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:25:28,965 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:25:28,965 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:25:28,965 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:25:28,965 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:25:28,966 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:25:28,966 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:25:28,966 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:25:28,966 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:25:28,966 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:25:28,968 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:25:28,968 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:25:28,968 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:25:28,968 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:25:28,968 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:25:28,969 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:25:28,969 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:25:28,969 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:25:28,969 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:25:28,969 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:25:28,970 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:25:28,970 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 11:25:29,018 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:25:29,034 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:25:29,040 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:25:29,042 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:25:29,042 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:25:29,043 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/pnr3_true-unreach-call.i [2019-05-23 11:25:29,107 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bb5fd724/bfb09b46552745bc9080c434d6d06a05/FLAGd951a9516 [2019-05-23 11:25:29,552 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:25:29,553 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/pnr3_true-unreach-call.i [2019-05-23 11:25:29,559 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bb5fd724/bfb09b46552745bc9080c434d6d06a05/FLAGd951a9516 [2019-05-23 11:25:29,927 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bb5fd724/bfb09b46552745bc9080c434d6d06a05 [2019-05-23 11:25:29,937 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:25:29,938 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:25:29,939 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:29,940 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:25:29,943 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:25:29,944 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:29" (1/1) ... [2019-05-23 11:25:29,947 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa0620e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:29, skipping insertion in model container [2019-05-23 11:25:29,947 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:25:29" (1/1) ... [2019-05-23 11:25:29,954 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:25:29,976 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:25:30,192 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:30,198 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:25:30,251 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:25:30,277 INFO L146 ILogger]: Completed translation [2019-05-23 11:25:30,277 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:30 WrapperNode [2019-05-23 11:25:30,277 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:25:30,278 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:30,279 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:25:30,279 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:25:30,289 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:30" (1/1) ... [2019-05-23 11:25:30,305 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:30" (1/1) ... [2019-05-23 11:25:30,349 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:25:30,350 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:25:30,350 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:25:30,350 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:25:30,465 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:30" (1/1) ... [2019-05-23 11:25:30,465 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:30" (1/1) ... [2019-05-23 11:25:30,467 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:30" (1/1) ... [2019-05-23 11:25:30,468 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:30" (1/1) ... [2019-05-23 11:25:30,481 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:30" (1/1) ... [2019-05-23 11:25:30,489 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:30" (1/1) ... [2019-05-23 11:25:30,493 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:30" (1/1) ... [2019-05-23 11:25:30,499 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:25:30,500 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:25:30,500 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:25:30,500 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:25:30,501 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:30" (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 11:25:30,567 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:25:30,567 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:25:30,567 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:25:30,567 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:25:30,568 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:25:30,568 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:25:31,105 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:25:31,106 INFO L146 ILogger]: Removed 14 assume(true) statements. [2019-05-23 11:25:31,107 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:31 BoogieIcfgContainer [2019-05-23 11:25:31,107 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:25:31,108 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:25:31,108 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:25:31,111 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:25:31,111 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:25:29" (1/3) ... [2019-05-23 11:25:31,112 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec6ed57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:31, skipping insertion in model container [2019-05-23 11:25:31,112 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:25:30" (2/3) ... [2019-05-23 11:25:31,113 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec6ed57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:25:31, skipping insertion in model container [2019-05-23 11:25:31,113 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:25:31" (3/3) ... [2019-05-23 11:25:31,115 INFO L146 ILogger]: Analyzing ICFG pnr3_true-unreach-call.i [2019-05-23 11:25:31,124 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:25:31,132 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:25:31,148 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:25:31,178 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:25:31,179 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:25:31,179 INFO L146 ILogger]: Hoare is true [2019-05-23 11:25:31,179 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:25:31,179 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:25:31,180 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:25:31,180 INFO L146 ILogger]: Difference is false [2019-05-23 11:25:31,180 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:25:31,180 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:25:31,196 INFO L146 ILogger]: Start isEmpty. Operand 82 states. [2019-05-23 11:25:31,203 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:25:31,203 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:31,204 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] [2019-05-23 11:25:31,206 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:31,212 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:31,212 INFO L146 ILogger]: Analyzing trace with hash 1584337628, now seen corresponding path program 1 times [2019-05-23 11:25:31,214 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:31,214 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:31,256 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:31,256 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:31,256 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:31,300 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:31,346 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 11:25:31,349 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:31,350 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:25:31,354 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:25:31,365 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:25:31,366 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:25:31,367 INFO L146 ILogger]: Start difference. First operand 82 states. Second operand 2 states. [2019-05-23 11:25:31,386 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:31,387 INFO L146 ILogger]: Finished difference Result 101 states and 112 transitions. [2019-05-23 11:25:31,387 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:25:31,388 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 26 [2019-05-23 11:25:31,389 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:31,399 INFO L146 ILogger]: With dead ends: 101 [2019-05-23 11:25:31,399 INFO L146 ILogger]: Without dead ends: 73 [2019-05-23 11:25:31,402 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 11:25:31,416 INFO L146 ILogger]: Start minimizeSevpa. Operand 73 states. [2019-05-23 11:25:31,434 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 73 to 73. [2019-05-23 11:25:31,435 INFO L146 ILogger]: Start removeUnreachable. Operand 73 states. [2019-05-23 11:25:31,437 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2019-05-23 11:25:31,439 INFO L146 ILogger]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 26 [2019-05-23 11:25:31,439 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:31,439 INFO L146 ILogger]: Abstraction has 73 states and 77 transitions. [2019-05-23 11:25:31,439 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:25:31,440 INFO L146 ILogger]: Start isEmpty. Operand 73 states and 77 transitions. [2019-05-23 11:25:31,440 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:25:31,441 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:31,441 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] [2019-05-23 11:25:31,441 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:31,441 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:31,442 INFO L146 ILogger]: Analyzing trace with hash 1297306268, now seen corresponding path program 1 times [2019-05-23 11:25:31,442 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:31,442 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:31,443 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:31,443 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:31,444 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:31,473 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:31,882 WARN L146 ILogger]: Spent 222.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 8 [2019-05-23 11:25:32,030 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 12 [2019-05-23 11:25:32,057 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 11:25:32,058 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:25:32,058 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:25:32,059 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:25:32,060 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:25:32,061 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:32,061 INFO L146 ILogger]: Start difference. First operand 73 states and 77 transitions. Second operand 5 states. [2019-05-23 11:25:32,295 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:32,296 INFO L146 ILogger]: Finished difference Result 128 states and 136 transitions. [2019-05-23 11:25:32,300 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:25:32,300 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 26 [2019-05-23 11:25:32,301 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:32,302 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:25:32,303 INFO L146 ILogger]: Without dead ends: 115 [2019-05-23 11:25:32,304 INFO L146 ILogger]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:25:32,305 INFO L146 ILogger]: Start minimizeSevpa. Operand 115 states. [2019-05-23 11:25:32,313 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 115 to 74. [2019-05-23 11:25:32,314 INFO L146 ILogger]: Start removeUnreachable. Operand 74 states. [2019-05-23 11:25:32,315 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2019-05-23 11:25:32,315 INFO L146 ILogger]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 26 [2019-05-23 11:25:32,316 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:32,316 INFO L146 ILogger]: Abstraction has 74 states and 78 transitions. [2019-05-23 11:25:32,316 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:25:32,316 INFO L146 ILogger]: Start isEmpty. Operand 74 states and 78 transitions. [2019-05-23 11:25:32,318 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:25:32,318 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:32,319 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] [2019-05-23 11:25:32,319 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:32,319 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:32,320 INFO L146 ILogger]: Analyzing trace with hash 946446291, now seen corresponding path program 1 times [2019-05-23 11:25:32,320 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:32,320 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:32,321 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:32,321 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:32,321 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:32,360 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:33,255 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:33,256 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:33,256 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 11:25:33,274 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:33,313 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:33,316 INFO L146 ILogger]: Trace formula consists of 110 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:25:33,324 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:33,465 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 11:25:33,466 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,479 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,480 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 11:25:33,480 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:25:33,528 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,530 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 30 treesize of output 29 [2019-05-23 11:25:33,531 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,545 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,546 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 11:25:33,546 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:25:33,591 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:33,592 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 22 treesize of output 21 [2019-05-23 11:25:33,593 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,667 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,668 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 11:25:33,668 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:12 [2019-05-23 11:25:33,731 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 16 treesize of output 8 [2019-05-23 11:25:33,732 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:33,735 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:33,736 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 11:25:33,736 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:25:33,799 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:33,828 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:33,828 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2019-05-23 11:25:33,829 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:25:33,829 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:25:33,831 INFO L146 ILogger]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:25:33,832 INFO L146 ILogger]: Start difference. First operand 74 states and 78 transitions. Second operand 14 states. [2019-05-23 11:25:34,963 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:34,963 INFO L146 ILogger]: Finished difference Result 213 states and 224 transitions. [2019-05-23 11:25:34,963 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:25:34,964 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 66 [2019-05-23 11:25:34,965 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:34,969 INFO L146 ILogger]: With dead ends: 213 [2019-05-23 11:25:34,970 INFO L146 ILogger]: Without dead ends: 211 [2019-05-23 11:25:34,971 INFO L146 ILogger]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:25:34,972 INFO L146 ILogger]: Start minimizeSevpa. Operand 211 states. [2019-05-23 11:25:34,985 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 211 to 123. [2019-05-23 11:25:34,985 INFO L146 ILogger]: Start removeUnreachable. Operand 123 states. [2019-05-23 11:25:34,987 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2019-05-23 11:25:34,988 INFO L146 ILogger]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 66 [2019-05-23 11:25:34,989 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:34,989 INFO L146 ILogger]: Abstraction has 123 states and 131 transitions. [2019-05-23 11:25:34,989 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:25:34,989 INFO L146 ILogger]: Start isEmpty. Operand 123 states and 131 transitions. [2019-05-23 11:25:35,000 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:25:35,000 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:35,000 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] [2019-05-23 11:25:35,001 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:35,001 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:35,001 INFO L146 ILogger]: Analyzing trace with hash -1755779021, now seen corresponding path program 1 times [2019-05-23 11:25:35,002 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:35,002 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:35,003 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:35,003 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:35,003 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:35,027 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:35,587 WARN L146 ILogger]: Spent 116.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 16 [2019-05-23 11:25:35,621 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:35,621 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:35,621 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 11:25:35,630 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:35,664 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:35,665 INFO L146 ILogger]: Trace formula consists of 111 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:25:35,670 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:35,814 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 11:25:35,814 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:35,849 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:35,850 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 11:25:35,850 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:35,967 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:35,968 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 11:25:35,969 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:36,001 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:36,002 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 11:25:36,002 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:25:36,013 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:36,015 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 11:25:36,016 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:36,025 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:36,025 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 11:25:36,026 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:14 [2019-05-23 11:25:36,074 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 11:25:36,075 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:36,085 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:36,086 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 11:25:36,086 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:36,172 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:36,191 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:36,191 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2019-05-23 11:25:36,192 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:25:36,192 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:25:36,193 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:25:36,194 INFO L146 ILogger]: Start difference. First operand 123 states and 131 transitions. Second operand 22 states. [2019-05-23 11:25:37,710 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:37,711 INFO L146 ILogger]: Finished difference Result 228 states and 242 transitions. [2019-05-23 11:25:37,711 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:25:37,711 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 66 [2019-05-23 11:25:37,712 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:37,715 INFO L146 ILogger]: With dead ends: 228 [2019-05-23 11:25:37,715 INFO L146 ILogger]: Without dead ends: 226 [2019-05-23 11:25:37,717 INFO L146 ILogger]: 0 DeclaredPredicates, 95 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=308, Invalid=952, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:25:37,717 INFO L146 ILogger]: Start minimizeSevpa. Operand 226 states. [2019-05-23 11:25:37,730 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 226 to 165. [2019-05-23 11:25:37,730 INFO L146 ILogger]: Start removeUnreachable. Operand 165 states. [2019-05-23 11:25:37,732 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 165 states to 165 states and 177 transitions. [2019-05-23 11:25:37,732 INFO L146 ILogger]: Start accepts. Automaton has 165 states and 177 transitions. Word has length 66 [2019-05-23 11:25:37,732 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:37,732 INFO L146 ILogger]: Abstraction has 165 states and 177 transitions. [2019-05-23 11:25:37,732 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:25:37,733 INFO L146 ILogger]: Start isEmpty. Operand 165 states and 177 transitions. [2019-05-23 11:25:37,735 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 77 [2019-05-23 11:25:37,735 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:37,735 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:25:37,735 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:37,736 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:37,736 INFO L146 ILogger]: Analyzing trace with hash -123659194, now seen corresponding path program 1 times [2019-05-23 11:25:37,736 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:37,736 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:37,737 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:37,737 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:37,737 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:37,775 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:38,154 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:38,154 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:38,154 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 11:25:38,171 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:38,193 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:38,194 INFO L146 ILogger]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:25:38,198 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:38,350 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 11:25:38,350 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:38,470 WARN L146 ILogger]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-05-23 11:25:38,470 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:38,471 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 11:25:38,471 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:25:38,595 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:38,598 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 24 treesize of output 23 [2019-05-23 11:25:38,599 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:38,605 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:38,605 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 11:25:38,606 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:14 [2019-05-23 11:25:38,711 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 16 treesize of output 8 [2019-05-23 11:25:38,711 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:38,712 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:38,713 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 11:25:38,713 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:25:38,756 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:38,774 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:38,774 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2019-05-23 11:25:38,774 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:25:38,774 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:25:38,775 INFO L146 ILogger]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:25:38,775 INFO L146 ILogger]: Start difference. First operand 165 states and 177 transitions. Second operand 22 states. [2019-05-23 11:25:39,722 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:39,723 INFO L146 ILogger]: Finished difference Result 330 states and 352 transitions. [2019-05-23 11:25:39,723 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:25:39,724 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 76 [2019-05-23 11:25:39,724 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:39,726 INFO L146 ILogger]: With dead ends: 330 [2019-05-23 11:25:39,726 INFO L146 ILogger]: Without dead ends: 328 [2019-05-23 11:25:39,728 INFO L146 ILogger]: 0 DeclaredPredicates, 108 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=348, Invalid=1292, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:25:39,729 INFO L146 ILogger]: Start minimizeSevpa. Operand 328 states. [2019-05-23 11:25:39,747 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 328 to 223. [2019-05-23 11:25:39,747 INFO L146 ILogger]: Start removeUnreachable. Operand 223 states. [2019-05-23 11:25:39,749 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 223 states to 223 states and 240 transitions. [2019-05-23 11:25:39,749 INFO L146 ILogger]: Start accepts. Automaton has 223 states and 240 transitions. Word has length 76 [2019-05-23 11:25:39,749 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:39,749 INFO L146 ILogger]: Abstraction has 223 states and 240 transitions. [2019-05-23 11:25:39,750 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:25:39,750 INFO L146 ILogger]: Start isEmpty. Operand 223 states and 240 transitions. [2019-05-23 11:25:39,752 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 77 [2019-05-23 11:25:39,752 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:39,752 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:25:39,753 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:39,753 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:39,753 INFO L146 ILogger]: Analyzing trace with hash -1981217626, now seen corresponding path program 1 times [2019-05-23 11:25:39,753 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:39,754 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:39,754 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:39,755 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:39,755 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:39,770 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:40,105 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:40,106 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:40,106 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 11:25:40,115 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:40,147 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:40,148 INFO L146 ILogger]: Trace formula consists of 126 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:25:40,151 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:40,559 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 11:25:40,560 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,570 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,571 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 11:25:40,572 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:40,632 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:40,633 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 11:25:40,634 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,642 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,643 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 11:25:40,643 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:16 [2019-05-23 11:25:40,840 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 11:25:40,841 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:40,847 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:40,848 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 11:25:40,848 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:40,929 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:40,948 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:40,949 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2019-05-23 11:25:40,949 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:25:40,949 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:25:40,950 INFO L146 ILogger]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:25:40,950 INFO L146 ILogger]: Start difference. First operand 223 states and 240 transitions. Second operand 25 states. [2019-05-23 11:25:42,426 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:42,426 INFO L146 ILogger]: Finished difference Result 380 states and 406 transitions. [2019-05-23 11:25:42,426 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:25:42,426 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 76 [2019-05-23 11:25:42,427 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:42,428 INFO L146 ILogger]: With dead ends: 380 [2019-05-23 11:25:42,428 INFO L146 ILogger]: Without dead ends: 378 [2019-05-23 11:25:42,431 INFO L146 ILogger]: 0 DeclaredPredicates, 110 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=480, Invalid=1500, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:25:42,431 INFO L146 ILogger]: Start minimizeSevpa. Operand 378 states. [2019-05-23 11:25:42,446 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 378 to 313. [2019-05-23 11:25:42,446 INFO L146 ILogger]: Start removeUnreachable. Operand 313 states. [2019-05-23 11:25:42,448 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 313 states to 313 states and 339 transitions. [2019-05-23 11:25:42,448 INFO L146 ILogger]: Start accepts. Automaton has 313 states and 339 transitions. Word has length 76 [2019-05-23 11:25:42,448 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:42,448 INFO L146 ILogger]: Abstraction has 313 states and 339 transitions. [2019-05-23 11:25:42,449 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:25:42,449 INFO L146 ILogger]: Start isEmpty. Operand 313 states and 339 transitions. [2019-05-23 11:25:42,451 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 87 [2019-05-23 11:25:42,451 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:42,452 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:42,452 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:42,452 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:42,452 INFO L146 ILogger]: Analyzing trace with hash -915806983, now seen corresponding path program 2 times [2019-05-23 11:25:42,452 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:42,453 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:42,453 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:42,453 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:42,454 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:42,481 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:42,709 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:42,709 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:42,709 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 11:25:42,721 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:42,749 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:42,749 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:42,750 INFO L146 ILogger]: Trace formula consists of 140 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:25:42,754 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:42,911 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:25:42,911 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:42,923 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:42,924 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 11:25:42,924 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:17 [2019-05-23 11:25:43,257 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 16 treesize of output 8 [2019-05-23 11:25:43,258 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:43,260 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:43,261 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 11:25:43,261 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:8 [2019-05-23 11:25:43,345 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:43,366 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:43,366 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2019-05-23 11:25:43,367 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:25:43,367 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:25:43,368 INFO L146 ILogger]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:25:43,368 INFO L146 ILogger]: Start difference. First operand 313 states and 339 transitions. Second operand 28 states. [2019-05-23 11:25:44,682 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:44,682 INFO L146 ILogger]: Finished difference Result 554 states and 597 transitions. [2019-05-23 11:25:44,683 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:25:44,683 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 86 [2019-05-23 11:25:44,683 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:44,688 INFO L146 ILogger]: With dead ends: 554 [2019-05-23 11:25:44,689 INFO L146 ILogger]: Without dead ends: 552 [2019-05-23 11:25:44,690 INFO L146 ILogger]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=471, Invalid=2285, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:25:44,691 INFO L146 ILogger]: Start minimizeSevpa. Operand 552 states. [2019-05-23 11:25:44,710 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 552 to 353. [2019-05-23 11:25:44,710 INFO L146 ILogger]: Start removeUnreachable. Operand 353 states. [2019-05-23 11:25:44,714 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 353 states to 353 states and 384 transitions. [2019-05-23 11:25:44,714 INFO L146 ILogger]: Start accepts. Automaton has 353 states and 384 transitions. Word has length 86 [2019-05-23 11:25:44,715 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:44,715 INFO L146 ILogger]: Abstraction has 353 states and 384 transitions. [2019-05-23 11:25:44,715 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:25:44,715 INFO L146 ILogger]: Start isEmpty. Operand 353 states and 384 transitions. [2019-05-23 11:25:44,722 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 87 [2019-05-23 11:25:44,722 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:44,722 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:44,722 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:44,725 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:44,725 INFO L146 ILogger]: Analyzing trace with hash -95394471, now seen corresponding path program 1 times [2019-05-23 11:25:44,725 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:44,725 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:44,726 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:44,726 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:44,726 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:44,739 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:45,157 WARN L146 ILogger]: Spent 249.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2019-05-23 11:25:45,518 WARN L146 ILogger]: Spent 297.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2019-05-23 11:25:45,655 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:45,655 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:45,655 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 11:25:45,663 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:45,683 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:45,684 INFO L146 ILogger]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:25:45,688 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:45,828 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 13 treesize of output 9 [2019-05-23 11:25:45,828 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:45,837 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:45,837 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 11:25:45,838 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2019-05-23 11:25:46,008 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 11:25:46,008 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:46,011 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:46,011 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 11:25:46,012 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:46,086 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:46,105 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:46,105 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 29 [2019-05-23 11:25:46,106 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:25:46,106 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:25:46,106 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:25:46,107 INFO L146 ILogger]: Start difference. First operand 353 states and 384 transitions. Second operand 29 states. [2019-05-23 11:25:48,318 WARN L146 ILogger]: Spent 276.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2019-05-23 11:25:48,793 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:48,794 INFO L146 ILogger]: Finished difference Result 620 states and 668 transitions. [2019-05-23 11:25:48,794 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:25:48,794 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 86 [2019-05-23 11:25:48,794 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:48,797 INFO L146 ILogger]: With dead ends: 620 [2019-05-23 11:25:48,797 INFO L146 ILogger]: Without dead ends: 618 [2019-05-23 11:25:48,799 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=579, Invalid=2283, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:25:48,799 INFO L146 ILogger]: Start minimizeSevpa. Operand 618 states. [2019-05-23 11:25:48,815 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 618 to 542. [2019-05-23 11:25:48,815 INFO L146 ILogger]: Start removeUnreachable. Operand 542 states. [2019-05-23 11:25:48,817 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 542 states to 542 states and 591 transitions. [2019-05-23 11:25:48,817 INFO L146 ILogger]: Start accepts. Automaton has 542 states and 591 transitions. Word has length 86 [2019-05-23 11:25:48,817 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:48,818 INFO L146 ILogger]: Abstraction has 542 states and 591 transitions. [2019-05-23 11:25:48,818 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:25:48,818 INFO L146 ILogger]: Start isEmpty. Operand 542 states and 591 transitions. [2019-05-23 11:25:48,819 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 97 [2019-05-23 11:25:48,820 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:48,820 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 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] [2019-05-23 11:25:48,820 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:48,820 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:48,820 INFO L146 ILogger]: Analyzing trace with hash 130132460, now seen corresponding path program 3 times [2019-05-23 11:25:48,821 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:48,821 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:48,821 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:48,822 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:48,822 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:48,832 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:49,212 WARN L146 ILogger]: Spent 254.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 9 [2019-05-23 11:25:49,457 WARN L146 ILogger]: Spent 194.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 5 [2019-05-23 11:25:49,727 WARN L146 ILogger]: Spent 197.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 9 [2019-05-23 11:25:50,349 INFO L146 ILogger]: Checked inductivity of 49 backedges. 29 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:50,349 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:50,350 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 11:25:50,358 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:25:50,384 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:25:50,385 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:50,386 INFO L146 ILogger]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:25:50,389 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:50,810 INFO L146 ILogger]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:50,828 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:50,828 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2019-05-23 11:25:50,829 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:25:50,829 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:25:50,829 INFO L146 ILogger]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:25:50,829 INFO L146 ILogger]: Start difference. First operand 542 states and 591 transitions. Second operand 28 states. [2019-05-23 11:25:51,543 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:51,544 INFO L146 ILogger]: Finished difference Result 939 states and 1014 transitions. [2019-05-23 11:25:51,544 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:25:51,544 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 96 [2019-05-23 11:25:51,545 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:51,548 INFO L146 ILogger]: With dead ends: 939 [2019-05-23 11:25:51,549 INFO L146 ILogger]: Without dead ends: 895 [2019-05-23 11:25:51,551 INFO L146 ILogger]: 0 DeclaredPredicates, 123 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=348, Invalid=1212, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:25:51,552 INFO L146 ILogger]: Start minimizeSevpa. Operand 895 states. [2019-05-23 11:25:51,575 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 895 to 547. [2019-05-23 11:25:51,575 INFO L146 ILogger]: Start removeUnreachable. Operand 547 states. [2019-05-23 11:25:51,577 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 547 states to 547 states and 589 transitions. [2019-05-23 11:25:51,577 INFO L146 ILogger]: Start accepts. Automaton has 547 states and 589 transitions. Word has length 96 [2019-05-23 11:25:51,577 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:51,577 INFO L146 ILogger]: Abstraction has 547 states and 589 transitions. [2019-05-23 11:25:51,578 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:25:51,578 INFO L146 ILogger]: Start isEmpty. Operand 547 states and 589 transitions. [2019-05-23 11:25:51,579 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:25:51,580 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:51,580 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, 1, 1, 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 11:25:51,580 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:51,580 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:51,581 INFO L146 ILogger]: Analyzing trace with hash 953690634, now seen corresponding path program 2 times [2019-05-23 11:25:51,581 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:51,581 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:51,582 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:51,582 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:51,582 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:51,609 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:52,010 WARN L146 ILogger]: Spent 200.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2019-05-23 11:25:52,356 WARN L146 ILogger]: Spent 274.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 11 [2019-05-23 11:25:52,599 INFO L146 ILogger]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:52,600 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:52,600 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 11:25:52,610 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:52,635 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:52,635 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:52,636 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:25:52,639 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:52,739 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 11:25:52,739 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:52,747 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:52,747 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 11:25:52,748 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:23 [2019-05-23 11:25:52,775 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:52,776 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 30 treesize of output 29 [2019-05-23 11:25:52,776 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:52,787 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:52,787 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 11:25:52,788 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:23 [2019-05-23 11:25:52,795 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:52,795 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 30 treesize of output 29 [2019-05-23 11:25:52,796 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:52,807 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:52,808 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 11:25:52,808 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:23 [2019-05-23 11:25:52,863 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:52,864 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 25 treesize of output 24 [2019-05-23 11:25:52,864 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:52,872 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:52,873 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 11:25:52,873 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:18 [2019-05-23 11:25:52,918 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:52,919 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 25 treesize of output 24 [2019-05-23 11:25:52,919 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:52,931 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:52,932 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 11:25:52,932 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:18 [2019-05-23 11:25:52,953 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:52,954 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 25 treesize of output 24 [2019-05-23 11:25:52,954 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:52,964 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:52,965 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 11:25:52,965 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:15 [2019-05-23 11:25:53,044 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 16 treesize of output 8 [2019-05-23 11:25:53,044 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:53,047 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:53,047 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 11:25:53,048 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:8 [2019-05-23 11:25:53,222 INFO L146 ILogger]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:53,240 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:53,241 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2019-05-23 11:25:53,241 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:25:53,241 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:25:53,242 INFO L146 ILogger]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:25:53,242 INFO L146 ILogger]: Start difference. First operand 547 states and 589 transitions. Second operand 26 states. [2019-05-23 11:25:55,146 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:55,146 INFO L146 ILogger]: Finished difference Result 819 states and 881 transitions. [2019-05-23 11:25:55,146 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:25:55,147 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 106 [2019-05-23 11:25:55,147 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:55,151 INFO L146 ILogger]: With dead ends: 819 [2019-05-23 11:25:55,152 INFO L146 ILogger]: Without dead ends: 817 [2019-05-23 11:25:55,153 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=377, Invalid=1603, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:25:55,154 INFO L146 ILogger]: Start minimizeSevpa. Operand 817 states. [2019-05-23 11:25:55,178 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 817 to 715. [2019-05-23 11:25:55,178 INFO L146 ILogger]: Start removeUnreachable. Operand 715 states. [2019-05-23 11:25:55,180 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 715 states to 715 states and 773 transitions. [2019-05-23 11:25:55,180 INFO L146 ILogger]: Start accepts. Automaton has 715 states and 773 transitions. Word has length 106 [2019-05-23 11:25:55,180 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:55,180 INFO L146 ILogger]: Abstraction has 715 states and 773 transitions. [2019-05-23 11:25:55,180 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:25:55,181 INFO L146 ILogger]: Start isEmpty. Operand 715 states and 773 transitions. [2019-05-23 11:25:55,182 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:25:55,183 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:55,183 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, 1, 1, 1, 1, 1, 1, 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 11:25:55,183 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:55,183 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:55,183 INFO L146 ILogger]: Analyzing trace with hash -2042127766, now seen corresponding path program 1 times [2019-05-23 11:25:55,183 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:55,184 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:55,184 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:55,184 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:55,185 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:55,197 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:55,925 INFO L146 ILogger]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:55,925 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:55,925 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 11:25:55,935 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:55,963 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:55,964 INFO L146 ILogger]: Trace formula consists of 171 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:25:55,966 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:56,069 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 11:25:56,069 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:56,078 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:56,079 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 11:25:56,079 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:25:56,137 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:56,139 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 11:25:56,139 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:56,149 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:56,150 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 11:25:56,150 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:25:56,155 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:56,156 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 11:25:56,156 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:56,170 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:56,170 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 11:25:56,170 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:25:56,256 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:56,256 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 24 treesize of output 23 [2019-05-23 11:25:56,257 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:56,267 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:56,268 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 11:25:56,268 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:25:56,274 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:56,274 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 24 treesize of output 23 [2019-05-23 11:25:56,275 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:56,286 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:56,287 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 11:25:56,287 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:25:56,294 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:25:56,294 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 24 treesize of output 23 [2019-05-23 11:25:56,295 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:56,306 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:56,307 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 11:25:56,308 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:14 [2019-05-23 11:25:56,357 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 11:25:56,358 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:25:56,360 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:25:56,361 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 11:25:56,361 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:25:56,432 INFO L146 ILogger]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:56,452 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:56,452 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2019-05-23 11:25:56,453 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:25:56,453 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:25:56,453 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:25:56,453 INFO L146 ILogger]: Start difference. First operand 715 states and 773 transitions. Second operand 27 states. [2019-05-23 11:25:59,608 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:59,609 INFO L146 ILogger]: Finished difference Result 1061 states and 1133 transitions. [2019-05-23 11:25:59,609 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:25:59,609 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 106 [2019-05-23 11:25:59,610 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:59,615 INFO L146 ILogger]: With dead ends: 1061 [2019-05-23 11:25:59,615 INFO L146 ILogger]: Without dead ends: 1059 [2019-05-23 11:25:59,617 INFO L146 ILogger]: 0 DeclaredPredicates, 164 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=827, Invalid=3079, Unknown=0, NotChecked=0, Total=3906 [2019-05-23 11:25:59,618 INFO L146 ILogger]: Start minimizeSevpa. Operand 1059 states. [2019-05-23 11:25:59,633 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1059 to 312. [2019-05-23 11:25:59,633 INFO L146 ILogger]: Start removeUnreachable. Operand 312 states. [2019-05-23 11:25:59,634 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 312 states to 312 states and 333 transitions. [2019-05-23 11:25:59,634 INFO L146 ILogger]: Start accepts. Automaton has 312 states and 333 transitions. Word has length 106 [2019-05-23 11:25:59,634 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:59,634 INFO L146 ILogger]: Abstraction has 312 states and 333 transitions. [2019-05-23 11:25:59,634 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:25:59,635 INFO L146 ILogger]: Start isEmpty. Operand 312 states and 333 transitions. [2019-05-23 11:25:59,636 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:25:59,636 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:59,636 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, 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 11:25:59,636 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:59,637 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:59,637 INFO L146 ILogger]: Analyzing trace with hash 218992061, now seen corresponding path program 4 times [2019-05-23 11:25:59,637 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:59,637 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:59,638 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:59,638 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:59,638 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:59,649 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:59,941 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:25:59,941 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:59,941 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 11:25:59,949 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:25:59,977 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:25:59,977 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:59,979 INFO L146 ILogger]: Trace formula consists of 185 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:25:59,981 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:00,209 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 11:26:00,210 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:00,220 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:00,221 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 11:26:00,222 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:23 [2019-05-23 11:26:00,262 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:00,264 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 30 treesize of output 29 [2019-05-23 11:26:00,264 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:00,275 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:00,275 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 11:26:00,276 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:23 [2019-05-23 11:26:00,325 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:00,326 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 27 treesize of output 26 [2019-05-23 11:26:00,326 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:00,335 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:00,336 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 11:26:00,336 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:26:00,342 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:00,343 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 27 treesize of output 26 [2019-05-23 11:26:00,343 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:00,352 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:00,353 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 11:26:00,353 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:26:00,358 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:00,359 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 27 treesize of output 26 [2019-05-23 11:26:00,360 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:00,371 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:00,372 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 11:26:00,372 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:17 [2019-05-23 11:26:00,458 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 16 treesize of output 8 [2019-05-23 11:26:00,458 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:00,461 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:00,461 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 11:26:00,461 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:8 [2019-05-23 11:26:00,547 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:00,565 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:00,565 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 29 [2019-05-23 11:26:00,566 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:26:00,566 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:26:00,566 INFO L146 ILogger]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:26:00,567 INFO L146 ILogger]: Start difference. First operand 312 states and 333 transitions. Second operand 29 states. [2019-05-23 11:26:01,742 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:01,743 INFO L146 ILogger]: Finished difference Result 480 states and 510 transitions. [2019-05-23 11:26:01,743 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:26:01,743 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 116 [2019-05-23 11:26:01,744 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:01,746 INFO L146 ILogger]: With dead ends: 480 [2019-05-23 11:26:01,746 INFO L146 ILogger]: Without dead ends: 478 [2019-05-23 11:26:01,747 INFO L146 ILogger]: 0 DeclaredPredicates, 160 GetRequests, 105 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=500, Invalid=2256, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:26:01,747 INFO L146 ILogger]: Start minimizeSevpa. Operand 478 states. [2019-05-23 11:26:01,762 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 478 to 397. [2019-05-23 11:26:01,762 INFO L146 ILogger]: Start removeUnreachable. Operand 397 states. [2019-05-23 11:26:01,763 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 397 states to 397 states and 426 transitions. [2019-05-23 11:26:01,763 INFO L146 ILogger]: Start accepts. Automaton has 397 states and 426 transitions. Word has length 116 [2019-05-23 11:26:01,763 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:01,764 INFO L146 ILogger]: Abstraction has 397 states and 426 transitions. [2019-05-23 11:26:01,764 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:26:01,764 INFO L146 ILogger]: Start isEmpty. Operand 397 states and 426 transitions. [2019-05-23 11:26:01,765 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:26:01,765 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:01,766 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:01,766 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:01,766 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:01,766 INFO L146 ILogger]: Analyzing trace with hash 1851627037, now seen corresponding path program 1 times [2019-05-23 11:26:01,766 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:01,766 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:01,767 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:01,767 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:01,767 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:01,779 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:02,179 WARN L146 ILogger]: Spent 247.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2019-05-23 11:26:02,540 WARN L146 ILogger]: Spent 286.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2019-05-23 11:26:03,064 INFO L146 ILogger]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:03,064 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:03,064 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 11:26:03,073 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:03,101 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:03,102 INFO L146 ILogger]: Trace formula consists of 186 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:26:03,104 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:03,232 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 11:26:03,232 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:03,240 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:03,241 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 11:26:03,241 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:26:03,269 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:03,270 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 11:26:03,270 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:03,280 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:03,281 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 11:26:03,281 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:26:03,386 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:03,387 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 11:26:03,387 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:03,400 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:03,400 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 11:26:03,400 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:03,408 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:03,409 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 11:26:03,409 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:03,422 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:03,422 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 11:26:03,422 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:03,429 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:03,430 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 11:26:03,430 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:03,447 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:03,447 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 11:26:03,448 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:16 [2019-05-23 11:26:03,650 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 11:26:03,650 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:03,656 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:03,656 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 11:26:03,656 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:26:03,773 INFO L146 ILogger]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:03,792 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:03,792 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2019-05-23 11:26:03,792 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:26:03,793 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:26:03,793 INFO L146 ILogger]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:26:03,793 INFO L146 ILogger]: Start difference. First operand 397 states and 426 transitions. Second operand 30 states. [2019-05-23 11:26:05,997 WARN L146 ILogger]: Spent 382.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2019-05-23 11:26:07,129 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:07,129 INFO L146 ILogger]: Finished difference Result 631 states and 666 transitions. [2019-05-23 11:26:07,129 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-05-23 11:26:07,129 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 116 [2019-05-23 11:26:07,130 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:07,133 INFO L146 ILogger]: With dead ends: 631 [2019-05-23 11:26:07,133 INFO L146 ILogger]: Without dead ends: 629 [2019-05-23 11:26:07,136 INFO L146 ILogger]: 0 DeclaredPredicates, 184 GetRequests, 105 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1160, Invalid=4692, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:26:07,136 INFO L146 ILogger]: Start minimizeSevpa. Operand 629 states. [2019-05-23 11:26:07,147 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 629 to 190. [2019-05-23 11:26:07,147 INFO L146 ILogger]: Start removeUnreachable. Operand 190 states. [2019-05-23 11:26:07,148 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 190 states to 190 states and 201 transitions. [2019-05-23 11:26:07,148 INFO L146 ILogger]: Start accepts. Automaton has 190 states and 201 transitions. Word has length 116 [2019-05-23 11:26:07,148 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:07,148 INFO L146 ILogger]: Abstraction has 190 states and 201 transitions. [2019-05-23 11:26:07,148 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:26:07,148 INFO L146 ILogger]: Start isEmpty. Operand 190 states and 201 transitions. [2019-05-23 11:26:07,150 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:26:07,150 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:07,150 INFO L146 ILogger]: trace histogram [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, 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] [2019-05-23 11:26:07,150 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:07,150 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:07,151 INFO L146 ILogger]: Analyzing trace with hash 1879846320, now seen corresponding path program 5 times [2019-05-23 11:26:07,151 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:07,151 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:07,152 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:07,152 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:07,152 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:07,164 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:07,631 INFO L146 ILogger]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:07,631 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:07,631 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:07,640 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:26:07,679 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:26:07,679 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:07,680 INFO L146 ILogger]: Trace formula consists of 200 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:26:07,682 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:07,808 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 11:26:07,808 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:07,817 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:07,817 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 11:26:07,818 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:26:07,888 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:07,889 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 27 treesize of output 26 [2019-05-23 11:26:07,889 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:07,897 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:07,897 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 11:26:07,898 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:07,904 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:07,905 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 27 treesize of output 26 [2019-05-23 11:26:07,906 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:07,914 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:07,915 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 11:26:07,915 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-05-23 11:26:07,924 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:07,926 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 27 treesize of output 26 [2019-05-23 11:26:07,926 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:07,938 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:07,939 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 11:26:07,939 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:14 [2019-05-23 11:26:08,100 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 16 treesize of output 8 [2019-05-23 11:26:08,101 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:08,102 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:08,102 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 11:26:08,102 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:26:08,175 INFO L146 ILogger]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:08,194 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:08,194 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2019-05-23 11:26:08,195 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:26:08,195 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:26:08,196 INFO L146 ILogger]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:26:08,196 INFO L146 ILogger]: Start difference. First operand 190 states and 201 transitions. Second operand 31 states. [2019-05-23 11:26:09,857 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:09,857 INFO L146 ILogger]: Finished difference Result 353 states and 372 transitions. [2019-05-23 11:26:09,858 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:26:09,858 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 126 [2019-05-23 11:26:09,858 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:09,860 INFO L146 ILogger]: With dead ends: 353 [2019-05-23 11:26:09,860 INFO L146 ILogger]: Without dead ends: 351 [2019-05-23 11:26:09,862 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=618, Invalid=3288, Unknown=0, NotChecked=0, Total=3906 [2019-05-23 11:26:09,862 INFO L146 ILogger]: Start minimizeSevpa. Operand 351 states. [2019-05-23 11:26:09,873 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 351 to 233. [2019-05-23 11:26:09,873 INFO L146 ILogger]: Start removeUnreachable. Operand 233 states. [2019-05-23 11:26:09,874 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 233 states to 233 states and 248 transitions. [2019-05-23 11:26:09,874 INFO L146 ILogger]: Start accepts. Automaton has 233 states and 248 transitions. Word has length 126 [2019-05-23 11:26:09,874 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:09,874 INFO L146 ILogger]: Abstraction has 233 states and 248 transitions. [2019-05-23 11:26:09,875 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:26:09,875 INFO L146 ILogger]: Start isEmpty. Operand 233 states and 248 transitions. [2019-05-23 11:26:09,876 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:26:09,876 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:09,876 INFO L146 ILogger]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:09,876 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:09,877 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:09,877 INFO L146 ILogger]: Analyzing trace with hash 344116752, now seen corresponding path program 1 times [2019-05-23 11:26:09,877 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:09,877 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:09,878 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:09,878 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:09,878 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:09,888 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:10,287 WARN L146 ILogger]: Spent 247.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2019-05-23 11:26:10,580 WARN L146 ILogger]: Spent 214.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2019-05-23 11:26:10,751 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:10,751 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:10,751 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:10,763 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:10,794 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:10,795 INFO L146 ILogger]: Trace formula consists of 201 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:26:10,797 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:10,941 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 11:26:10,942 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:10,950 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:10,950 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 11:26:10,951 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:26:11,065 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,066 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 11:26:11,066 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,076 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,077 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 11:26:11,077 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:11,087 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,088 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 11:26:11,089 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,101 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,102 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 11:26:11,102 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:11,107 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:11,108 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 11:26:11,108 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,119 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,119 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 11:26:11,120 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:16 [2019-05-23 11:26:11,290 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 11:26:11,291 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:11,294 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:11,295 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 11:26:11,295 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:26:11,411 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:11,429 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:11,429 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2019-05-23 11:26:11,430 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:26:11,430 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:26:11,430 INFO L146 ILogger]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:26:11,431 INFO L146 ILogger]: Start difference. First operand 233 states and 248 transitions. Second operand 34 states. [2019-05-23 11:26:13,961 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-05-23 11:26:15,721 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:15,721 INFO L146 ILogger]: Finished difference Result 468 states and 491 transitions. [2019-05-23 11:26:15,722 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:26:15,722 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 126 [2019-05-23 11:26:15,722 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:15,724 INFO L146 ILogger]: With dead ends: 468 [2019-05-23 11:26:15,725 INFO L146 ILogger]: Without dead ends: 466 [2019-05-23 11:26:15,728 INFO L146 ILogger]: 0 DeclaredPredicates, 204 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2118 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1395, Invalid=6795, Unknown=0, NotChecked=0, Total=8190 [2019-05-23 11:26:15,729 INFO L146 ILogger]: Start minimizeSevpa. Operand 466 states. [2019-05-23 11:26:15,738 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 466 to 143. [2019-05-23 11:26:15,738 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:26:15,738 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 150 transitions. [2019-05-23 11:26:15,739 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 150 transitions. Word has length 126 [2019-05-23 11:26:15,739 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:15,739 INFO L146 ILogger]: Abstraction has 143 states and 150 transitions. [2019-05-23 11:26:15,739 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:26:15,739 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 150 transitions. [2019-05-23 11:26:15,740 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 137 [2019-05-23 11:26:15,740 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:15,741 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 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] [2019-05-23 11:26:15,741 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:15,741 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:15,741 INFO L146 ILogger]: Analyzing trace with hash 228964835, now seen corresponding path program 6 times [2019-05-23 11:26:15,741 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:15,741 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:15,742 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:15,742 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:15,742 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:15,760 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:16,062 INFO L146 ILogger]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:16,062 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:16,062 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:16,070 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:26:16,108 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:26:16,109 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:16,110 INFO L146 ILogger]: Trace formula consists of 215 conjuncts, 35 conjunts are in the unsatisfiable core [2019-05-23 11:26:16,112 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:16,185 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 11:26:16,185 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,192 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,193 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 11:26:16,193 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:26:16,207 INFO L146 ILogger]: treesize reduction 42, result has 22.2 percent of original size [2019-05-23 11:26:16,208 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 30 treesize of output 29 [2019-05-23 11:26:16,208 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,215 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,216 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 11:26:16,216 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:20 [2019-05-23 11:26:16,231 INFO L146 ILogger]: treesize reduction 42, result has 22.2 percent of original size [2019-05-23 11:26:16,232 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 30 treesize of output 29 [2019-05-23 11:26:16,232 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,240 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,240 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:16,241 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:20 [2019-05-23 11:26:16,505 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,505 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2019-05-23 11:26:16,506 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:26:16,517 INFO L146 ILogger]: treesize reduction 14, result has 44.0 percent of original size [2019-05-23 11:26:16,517 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,518 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:31, output treesize:4 [2019-05-23 11:26:16,596 INFO L146 ILogger]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:16,615 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:16,615 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 25 [2019-05-23 11:26:16,615 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:26:16,616 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:26:16,616 INFO L146 ILogger]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:26:16,616 INFO L146 ILogger]: Start difference. First operand 143 states and 150 transitions. Second operand 25 states. [2019-05-23 11:26:18,248 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:18,248 INFO L146 ILogger]: Finished difference Result 324 states and 340 transitions. [2019-05-23 11:26:18,248 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:26:18,248 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 136 [2019-05-23 11:26:18,249 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:18,251 INFO L146 ILogger]: With dead ends: 324 [2019-05-23 11:26:18,251 INFO L146 ILogger]: Without dead ends: 322 [2019-05-23 11:26:18,252 INFO L146 ILogger]: 0 DeclaredPredicates, 190 GetRequests, 129 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=415, Invalid=2891, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:26:18,253 INFO L146 ILogger]: Start minimizeSevpa. Operand 322 states. [2019-05-23 11:26:18,266 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 322 to 196. [2019-05-23 11:26:18,266 INFO L146 ILogger]: Start removeUnreachable. Operand 196 states. [2019-05-23 11:26:18,266 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 196 states to 196 states and 207 transitions. [2019-05-23 11:26:18,267 INFO L146 ILogger]: Start accepts. Automaton has 196 states and 207 transitions. Word has length 136 [2019-05-23 11:26:18,267 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:18,267 INFO L146 ILogger]: Abstraction has 196 states and 207 transitions. [2019-05-23 11:26:18,267 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:26:18,267 INFO L146 ILogger]: Start isEmpty. Operand 196 states and 207 transitions. [2019-05-23 11:26:18,268 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 137 [2019-05-23 11:26:18,268 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:18,269 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 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, 1, 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 11:26:18,269 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:18,269 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:18,269 INFO L146 ILogger]: Analyzing trace with hash 1983128131, now seen corresponding path program 1 times [2019-05-23 11:26:18,269 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:18,269 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:18,270 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:18,270 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:18,270 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:18,285 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:18,730 WARN L146 ILogger]: Spent 278.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2019-05-23 11:26:19,132 WARN L146 ILogger]: Spent 332.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2019-05-23 11:26:19,371 WARN L146 ILogger]: Spent 152.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2019-05-23 11:26:19,572 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:19,573 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:19,573 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:19,583 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:19,613 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:19,614 INFO L146 ILogger]: Trace formula consists of 216 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:26:19,616 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:19,865 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 11:26:19,865 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:19,878 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:19,879 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 11:26:19,879 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:26:19,909 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:19,911 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 11:26:19,911 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:19,922 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:19,922 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 11:26:19,922 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2019-05-23 11:26:19,928 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:19,929 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 11:26:19,929 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:19,937 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:19,937 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 11:26:19,938 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:16 [2019-05-23 11:26:20,160 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 11:26:20,161 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:20,172 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:20,172 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 11:26:20,173 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:26:20,291 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:20,311 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:20,311 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 37 [2019-05-23 11:26:20,311 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:26:20,312 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:26:20,312 INFO L146 ILogger]: CoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:26:20,312 INFO L146 ILogger]: Start difference. First operand 196 states and 207 transitions. Second operand 37 states. [2019-05-23 11:26:24,339 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:24,339 INFO L146 ILogger]: Finished difference Result 481 states and 508 transitions. [2019-05-23 11:26:24,340 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:26:24,340 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 136 [2019-05-23 11:26:24,340 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:24,342 INFO L146 ILogger]: With dead ends: 481 [2019-05-23 11:26:24,342 INFO L146 ILogger]: Without dead ends: 479 [2019-05-23 11:26:24,344 INFO L146 ILogger]: 0 DeclaredPredicates, 201 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=967, Invalid=5353, Unknown=0, NotChecked=0, Total=6320 [2019-05-23 11:26:24,344 INFO L146 ILogger]: Start minimizeSevpa. Operand 479 states. [2019-05-23 11:26:24,361 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 479 to 238. [2019-05-23 11:26:24,361 INFO L146 ILogger]: Start removeUnreachable. Operand 238 states. [2019-05-23 11:26:24,362 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 238 states to 238 states and 253 transitions. [2019-05-23 11:26:24,362 INFO L146 ILogger]: Start accepts. Automaton has 238 states and 253 transitions. Word has length 136 [2019-05-23 11:26:24,362 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:24,362 INFO L146 ILogger]: Abstraction has 238 states and 253 transitions. [2019-05-23 11:26:24,362 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:26:24,363 INFO L146 ILogger]: Start isEmpty. Operand 238 states and 253 transitions. [2019-05-23 11:26:24,363 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 147 [2019-05-23 11:26:24,363 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:24,364 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:24,364 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:24,364 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:24,364 INFO L146 ILogger]: Analyzing trace with hash -78650794, now seen corresponding path program 7 times [2019-05-23 11:26:24,364 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:24,365 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:24,365 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:24,365 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:24,366 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:24,378 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:24,831 INFO L146 ILogger]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:24,831 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:24,831 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:24,841 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:24,877 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:24,879 INFO L146 ILogger]: Trace formula consists of 230 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:26:24,881 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:25,047 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 11:26:25,048 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:25,056 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:25,057 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 11:26:25,057 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-05-23 11:26:25,092 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:25,093 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 24 treesize of output 23 [2019-05-23 11:26:25,093 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:25,099 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:25,099 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 11:26:25,100 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:14 [2019-05-23 11:26:25,460 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 16 treesize of output 8 [2019-05-23 11:26:25,460 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:25,461 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:25,461 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 11:26:25,462 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:26:25,559 INFO L146 ILogger]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:25,578 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:25,578 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 38 [2019-05-23 11:26:25,579 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:26:25,579 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:26:25,579 INFO L146 ILogger]: CoverageRelationStatistics Valid=135, Invalid=1271, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:26:25,580 INFO L146 ILogger]: Start difference. First operand 238 states and 253 transitions. Second operand 38 states. [2019-05-23 11:26:27,711 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:27,711 INFO L146 ILogger]: Finished difference Result 433 states and 458 transitions. [2019-05-23 11:26:27,711 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:26:27,711 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 146 [2019-05-23 11:26:27,712 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:27,715 INFO L146 ILogger]: With dead ends: 433 [2019-05-23 11:26:27,715 INFO L146 ILogger]: Without dead ends: 431 [2019-05-23 11:26:27,716 INFO L146 ILogger]: 0 DeclaredPredicates, 208 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=707, Invalid=5455, Unknown=0, NotChecked=0, Total=6162 [2019-05-23 11:26:27,716 INFO L146 ILogger]: Start minimizeSevpa. Operand 431 states. [2019-05-23 11:26:27,736 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 431 to 296. [2019-05-23 11:26:27,736 INFO L146 ILogger]: Start removeUnreachable. Operand 296 states. [2019-05-23 11:26:27,737 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 296 states to 296 states and 316 transitions. [2019-05-23 11:26:27,737 INFO L146 ILogger]: Start accepts. Automaton has 296 states and 316 transitions. Word has length 146 [2019-05-23 11:26:27,738 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:27,738 INFO L146 ILogger]: Abstraction has 296 states and 316 transitions. [2019-05-23 11:26:27,738 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:26:27,738 INFO L146 ILogger]: Start isEmpty. Operand 296 states and 316 transitions. [2019-05-23 11:26:27,739 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 147 [2019-05-23 11:26:27,739 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:27,739 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 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 11:26:27,740 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:27,740 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:27,740 INFO L146 ILogger]: Analyzing trace with hash 589095606, now seen corresponding path program 2 times [2019-05-23 11:26:27,740 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:27,740 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:27,741 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:27,741 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:27,741 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:27,753 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:28,256 INFO L146 ILogger]: Checked inductivity of 125 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:28,256 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:28,256 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:28,265 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:28,301 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:28,301 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:28,302 INFO L146 ILogger]: Trace formula consists of 231 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:26:28,304 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:28,502 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 11:26:28,502 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:28,511 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:28,512 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 11:26:28,512 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-05-23 11:26:28,547 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:28,548 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 11:26:28,549 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:28,557 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:28,557 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 11:26:28,558 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:16 [2019-05-23 11:26:28,915 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 11:26:28,916 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:28,930 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:28,930 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 11:26:28,931 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:26:29,278 INFO L146 ILogger]: Checked inductivity of 125 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:29,296 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:29,296 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 41 [2019-05-23 11:26:29,297 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:26:29,297 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:26:29,297 INFO L146 ILogger]: CoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:26:29,297 INFO L146 ILogger]: Start difference. First operand 296 states and 316 transitions. Second operand 41 states.