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/rewrev_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:26:34,283 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:26:34,285 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:26:34,297 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:26:34,297 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:26:34,299 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:26:34,302 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:26:34,304 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:26:34,308 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:26:34,310 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:26:34,311 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:26:34,311 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:26:34,312 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:26:34,313 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:26:34,315 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:26:34,316 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:26:34,317 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:26:34,322 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:26:34,330 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:26:34,331 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:26:34,332 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:26:34,338 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:26:34,342 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:26:34,342 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:26:34,342 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:26:34,343 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:26:34,345 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:26:34,346 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:26:34,346 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:26:34,347 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:26:34,349 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:26:34,351 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:26:34,352 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:26:34,352 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:26:34,353 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:26:34,354 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:26:34,354 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:26:34,355 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:26:34,356 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:26:34,356 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:26:34,387 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:26:34,387 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:26:34,390 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:26:34,391 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:26:34,393 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:26:34,393 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:26:34,393 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:26:34,394 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:26:34,394 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:26:34,394 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:26:34,394 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:26:34,394 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:26:34,395 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:26:34,395 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:26:34,395 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:26:34,395 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:26:34,395 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:26:34,396 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:26:34,396 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:26:34,396 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:26:34,396 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:26:34,396 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:26:34,398 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:26:34,399 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:26:34,399 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:26:34,399 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:26:34,399 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:26:34,400 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:26:34,400 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 11:26:34,460 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:26:34,474 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:26:34,479 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:26:34,480 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:26:34,480 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:26:34,481 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/rewrev_true-unreach-call.i [2019-05-23 11:26:34,534 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee39b4ebf/f6d3ac93a5334e248c231d5a0da3e016/FLAGf880b23a9 [2019-05-23 11:26:34,919 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:26:34,920 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/rewrev_true-unreach-call.i [2019-05-23 11:26:34,924 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee39b4ebf/f6d3ac93a5334e248c231d5a0da3e016/FLAGf880b23a9 [2019-05-23 11:26:35,315 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee39b4ebf/f6d3ac93a5334e248c231d5a0da3e016 [2019-05-23 11:26:35,324 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:26:35,326 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:26:35,327 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:35,327 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:26:35,330 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:26:35,332 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:35" (1/1) ... [2019-05-23 11:26:35,335 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7ba85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35, skipping insertion in model container [2019-05-23 11:26:35,335 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:35" (1/1) ... [2019-05-23 11:26:35,342 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:26:35,360 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:26:35,558 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:35,563 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:26:35,594 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:35,621 INFO L146 ILogger]: Completed translation [2019-05-23 11:26:35,622 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35 WrapperNode [2019-05-23 11:26:35,622 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:35,623 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:35,624 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:26:35,624 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:26:35,633 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35" (1/1) ... [2019-05-23 11:26:35,646 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35" (1/1) ... [2019-05-23 11:26:35,665 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:35,665 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:26:35,666 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:26:35,666 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:26:35,673 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35" (1/1) ... [2019-05-23 11:26:35,674 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35" (1/1) ... [2019-05-23 11:26:35,676 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35" (1/1) ... [2019-05-23 11:26:35,676 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35" (1/1) ... [2019-05-23 11:26:35,695 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35" (1/1) ... [2019-05-23 11:26:35,700 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35" (1/1) ... [2019-05-23 11:26:35,701 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35" (1/1) ... [2019-05-23 11:26:35,703 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:26:35,703 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:26:35,704 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:26:35,704 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:26:35,704 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35" (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 11:26:35,830 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:26:35,830 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:26:35,831 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:26:35,831 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:26:35,831 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:26:35,831 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:26:36,266 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:26:36,266 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:26:36,267 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:36 BoogieIcfgContainer [2019-05-23 11:26:36,267 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:26:36,268 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:26:36,269 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:26:36,272 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:26:36,272 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:26:35" (1/3) ... [2019-05-23 11:26:36,273 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae83be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:36, skipping insertion in model container [2019-05-23 11:26:36,273 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:35" (2/3) ... [2019-05-23 11:26:36,273 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae83be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:36, skipping insertion in model container [2019-05-23 11:26:36,273 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:36" (3/3) ... [2019-05-23 11:26:36,275 INFO L146 ILogger]: Analyzing ICFG rewrev_true-unreach-call.i [2019-05-23 11:26:36,284 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:26:36,291 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:26:36,307 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:26:36,333 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:26:36,333 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:26:36,333 INFO L146 ILogger]: Hoare is true [2019-05-23 11:26:36,334 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:26:36,334 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:26:36,334 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:26:36,334 INFO L146 ILogger]: Difference is false [2019-05-23 11:26:36,334 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:26:36,334 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:26:36,349 INFO L146 ILogger]: Start isEmpty. Operand 41 states. [2019-05-23 11:26:36,356 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:26:36,356 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:36,357 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] [2019-05-23 11:26:36,359 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:36,363 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:36,363 INFO L146 ILogger]: Analyzing trace with hash 1654400395, now seen corresponding path program 1 times [2019-05-23 11:26:36,365 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:36,365 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:36,406 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:36,407 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:36,407 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:36,441 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:36,493 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 11:26:36,497 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:36,498 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:26:36,501 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:26:36,515 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:26:36,516 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:26:36,519 INFO L146 ILogger]: Start difference. First operand 41 states. Second operand 2 states. [2019-05-23 11:26:36,534 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:36,535 INFO L146 ILogger]: Finished difference Result 60 states and 68 transitions. [2019-05-23 11:26:36,535 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:26:36,536 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 24 [2019-05-23 11:26:36,537 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:36,547 INFO L146 ILogger]: With dead ends: 60 [2019-05-23 11:26:36,547 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:26:36,550 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 11:26:36,568 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:26:36,583 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:26:36,585 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:26:36,586 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:26:36,587 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 24 [2019-05-23 11:26:36,588 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:36,588 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:26:36,588 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:26:36,588 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:26:36,589 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:26:36,589 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:36,590 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] [2019-05-23 11:26:36,590 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:36,590 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:36,591 INFO L146 ILogger]: Analyzing trace with hash 508900731, now seen corresponding path program 1 times [2019-05-23 11:26:36,591 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:36,591 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:36,592 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:36,592 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:36,592 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:36,615 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:36,679 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 11:26:36,680 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:36,680 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:26:36,682 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:26:36,682 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:26:36,683 INFO L146 ILogger]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:36,684 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2019-05-23 11:26:36,844 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:36,845 INFO L146 ILogger]: Finished difference Result 71 states and 77 transitions. [2019-05-23 11:26:36,845 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:26:36,845 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 24 [2019-05-23 11:26:36,845 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:36,846 INFO L146 ILogger]: With dead ends: 71 [2019-05-23 11:26:36,846 INFO L146 ILogger]: Without dead ends: 51 [2019-05-23 11:26:36,849 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:26:36,850 INFO L146 ILogger]: Start minimizeSevpa. Operand 51 states. [2019-05-23 11:26:36,858 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 51 to 37. [2019-05-23 11:26:36,859 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:26:36,860 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-05-23 11:26:36,861 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 24 [2019-05-23 11:26:36,861 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:36,861 INFO L146 ILogger]: Abstraction has 37 states and 39 transitions. [2019-05-23 11:26:36,861 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:26:36,862 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 39 transitions. [2019-05-23 11:26:36,863 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:26:36,863 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:36,863 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] [2019-05-23 11:26:36,863 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:36,864 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:36,864 INFO L146 ILogger]: Analyzing trace with hash -1375352274, now seen corresponding path program 1 times [2019-05-23 11:26:36,864 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:36,864 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:36,865 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:36,866 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:36,866 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:36,902 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:37,042 INFO L146 ILogger]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:37,042 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:37,042 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:26:37,043 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:26:37,043 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:26:37,044 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:26:37,044 INFO L146 ILogger]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2019-05-23 11:26:37,307 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:37,308 INFO L146 ILogger]: Finished difference Result 66 states and 69 transitions. [2019-05-23 11:26:37,308 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:26:37,308 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 31 [2019-05-23 11:26:37,309 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:37,309 INFO L146 ILogger]: With dead ends: 66 [2019-05-23 11:26:37,310 INFO L146 ILogger]: Without dead ends: 53 [2019-05-23 11:26:37,311 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:26:37,311 INFO L146 ILogger]: Start minimizeSevpa. Operand 53 states. [2019-05-23 11:26:37,316 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 53 to 42. [2019-05-23 11:26:37,317 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:26:37,318 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-05-23 11:26:37,318 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 31 [2019-05-23 11:26:37,318 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:37,318 INFO L146 ILogger]: Abstraction has 42 states and 44 transitions. [2019-05-23 11:26:37,319 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:26:37,319 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 44 transitions. [2019-05-23 11:26:37,320 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:26:37,320 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:37,320 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] [2019-05-23 11:26:37,320 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:37,321 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:37,321 INFO L146 ILogger]: Analyzing trace with hash 68118469, now seen corresponding path program 1 times [2019-05-23 11:26:37,321 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:37,321 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:37,322 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:37,322 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:37,323 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:37,345 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:37,962 WARN L146 ILogger]: Spent 136.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 18 [2019-05-23 11:26:38,132 WARN L146 ILogger]: Spent 128.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 17 [2019-05-23 11:26:38,556 WARN L146 ILogger]: Spent 192.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2019-05-23 11:26:38,698 INFO L146 ILogger]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:38,699 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:38,699 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 11:26:38,717 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:38,737 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:38,740 INFO L146 ILogger]: Trace formula consists of 65 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:26:38,747 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:38,976 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 11:26:38,976 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:38,993 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:38,995 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 11:26:38,995 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:27 [2019-05-23 11:26:39,331 WARN L146 ILogger]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-05-23 11:26:39,391 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:39,407 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:39,408 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 19 treesize of output 10 [2019-05-23 11:26:39,409 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:39,421 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:39,423 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 11:26:39,423 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:7 [2019-05-23 11:26:39,535 INFO L146 ILogger]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:26:39,564 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:39,564 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 22 [2019-05-23 11:26:39,565 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:26:39,565 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:26:39,570 INFO L146 ILogger]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:26:39,571 INFO L146 ILogger]: Start difference. First operand 42 states and 44 transitions. Second operand 22 states. [2019-05-23 11:26:40,775 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:40,776 INFO L146 ILogger]: Finished difference Result 61 states and 64 transitions. [2019-05-23 11:26:40,777 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:26:40,777 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 37 [2019-05-23 11:26:40,778 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:40,779 INFO L146 ILogger]: With dead ends: 61 [2019-05-23 11:26:40,779 INFO L146 ILogger]: Without dead ends: 59 [2019-05-23 11:26:40,780 INFO L146 ILogger]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:26:40,781 INFO L146 ILogger]: Start minimizeSevpa. Operand 59 states. [2019-05-23 11:26:40,791 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 59 to 48. [2019-05-23 11:26:40,791 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:26:40,792 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2019-05-23 11:26:40,792 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 37 [2019-05-23 11:26:40,792 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:40,793 INFO L146 ILogger]: Abstraction has 48 states and 50 transitions. [2019-05-23 11:26:40,793 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:26:40,793 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 50 transitions. [2019-05-23 11:26:40,796 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:26:40,796 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:40,796 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:40,796 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:40,797 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:40,797 INFO L146 ILogger]: Analyzing trace with hash 212584984, now seen corresponding path program 1 times [2019-05-23 11:26:40,797 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:40,797 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:40,798 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:40,798 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:40,799 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:40,860 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:41,392 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:41,392 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:41,392 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 11:26:41,409 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:41,430 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:41,431 INFO L146 ILogger]: Trace formula consists of 80 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:26:41,434 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:41,513 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 11:26:41,513 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,524 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,525 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,526 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:26:42,066 INFO L146 ILogger]: treesize reduction 42, result has 22.2 percent of original size [2019-05-23 11:26:42,067 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 38 treesize of output 28 [2019-05-23 11:26:42,068 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:42,079 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:42,081 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:42,081 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:52, output treesize:48 [2019-05-23 11:26:42,854 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:42,854 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 58 [2019-05-23 11:26:42,859 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:26:42,992 WARN L146 ILogger]: Spent 132.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 15 [2019-05-23 11:26:42,992 INFO L146 ILogger]: treesize reduction 28, result has 39.1 percent of original size [2019-05-23 11:26:42,994 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:42,994 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:57, output treesize:7 [2019-05-23 11:26:43,085 INFO L146 ILogger]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:43,103 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:43,104 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 31 [2019-05-23 11:26:43,104 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:26:43,104 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:26:43,105 INFO L146 ILogger]: CoverageRelationStatistics Valid=125, Invalid=804, Unknown=1, NotChecked=0, Total=930 [2019-05-23 11:26:43,105 INFO L146 ILogger]: Start difference. First operand 48 states and 50 transitions. Second operand 31 states. [2019-05-23 11:26:46,282 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:46,282 INFO L146 ILogger]: Finished difference Result 72 states and 75 transitions. [2019-05-23 11:26:46,284 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:26:46,284 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 47 [2019-05-23 11:26:46,284 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:46,285 INFO L146 ILogger]: With dead ends: 72 [2019-05-23 11:26:46,286 INFO L146 ILogger]: Without dead ends: 70 [2019-05-23 11:26:46,287 INFO L146 ILogger]: 0 DeclaredPredicates, 84 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=497, Invalid=2255, Unknown=4, NotChecked=0, Total=2756 [2019-05-23 11:26:46,288 INFO L146 ILogger]: Start minimizeSevpa. Operand 70 states. [2019-05-23 11:26:46,293 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 70 to 58. [2019-05-23 11:26:46,293 INFO L146 ILogger]: Start removeUnreachable. Operand 58 states. [2019-05-23 11:26:46,294 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2019-05-23 11:26:46,295 INFO L146 ILogger]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 47 [2019-05-23 11:26:46,295 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:46,295 INFO L146 ILogger]: Abstraction has 58 states and 60 transitions. [2019-05-23 11:26:46,295 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:26:46,295 INFO L146 ILogger]: Start isEmpty. Operand 58 states and 60 transitions. [2019-05-23 11:26:46,297 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:26:46,297 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:46,297 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:46,297 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:46,298 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:46,298 INFO L146 ILogger]: Analyzing trace with hash -723803989, now seen corresponding path program 2 times [2019-05-23 11:26:46,298 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:46,298 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:46,299 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:46,299 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:46,299 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:46,312 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:46,429 INFO L146 ILogger]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:46,429 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:46,429 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 11:26:46,438 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:46,458 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:46,458 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:46,459 INFO L146 ILogger]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:26:46,463 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:46,590 INFO L146 ILogger]: Checked inductivity of 30 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:46,608 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:46,608 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-05-23 11:26:46,610 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:26:46,610 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:26:46,611 INFO L146 ILogger]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:26:46,611 INFO L146 ILogger]: Start difference. First operand 58 states and 60 transitions. Second operand 16 states. [2019-05-23 11:26:47,027 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:47,028 INFO L146 ILogger]: Finished difference Result 115 states and 120 transitions. [2019-05-23 11:26:47,028 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:26:47,029 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 57 [2019-05-23 11:26:47,029 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:47,030 INFO L146 ILogger]: With dead ends: 115 [2019-05-23 11:26:47,030 INFO L146 ILogger]: Without dead ends: 69 [2019-05-23 11:26:47,031 INFO L146 ILogger]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:26:47,032 INFO L146 ILogger]: Start minimizeSevpa. Operand 69 states. [2019-05-23 11:26:47,037 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 69 to 65. [2019-05-23 11:26:47,037 INFO L146 ILogger]: Start removeUnreachable. Operand 65 states. [2019-05-23 11:26:47,038 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2019-05-23 11:26:47,039 INFO L146 ILogger]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 57 [2019-05-23 11:26:47,039 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:47,039 INFO L146 ILogger]: Abstraction has 65 states and 67 transitions. [2019-05-23 11:26:47,039 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:26:47,039 INFO L146 ILogger]: Start isEmpty. Operand 65 states and 67 transitions. [2019-05-23 11:26:47,041 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 65 [2019-05-23 11:26:47,041 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:47,042 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:26:47,042 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:47,042 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:47,042 INFO L146 ILogger]: Analyzing trace with hash 365145688, now seen corresponding path program 3 times [2019-05-23 11:26:47,043 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:47,043 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:47,044 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:47,044 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:47,044 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:47,084 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:48,081 INFO L146 ILogger]: Checked inductivity of 44 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:48,082 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:48,082 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 11:26:48,092 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:48,112 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:26:48,112 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:48,114 INFO L146 ILogger]: Trace formula consists of 104 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:26:48,117 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:48,270 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 11:26:48,271 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,279 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,280 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,280 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2019-05-23 11:26:48,430 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,431 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 28 treesize of output 66 [2019-05-23 11:26:48,431 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,471 INFO L146 ILogger]: treesize reduction 26, result has 68.3 percent of original size [2019-05-23 11:26:48,472 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 11:26:48,473 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:47, output treesize:45 [2019-05-23 11:26:48,539 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 31 treesize of output 27 [2019-05-23 11:26:48,539 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,560 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,561 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 48 treesize of output 88 [2019-05-23 11:26:48,562 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,635 INFO L146 ILogger]: treesize reduction 41, result has 63.7 percent of original size [2019-05-23 11:26:48,636 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-05-23 11:26:48,636 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 2 variables, input treesize:80, output treesize:72 [2019-05-23 11:26:49,052 INFO L146 ILogger]: treesize reduction 41, result has 67.2 percent of original size [2019-05-23 11:26:49,053 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 102 [2019-05-23 11:26:49,054 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:49,101 INFO L146 ILogger]: treesize reduction 50, result has 61.2 percent of original size [2019-05-23 11:26:49,102 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:49,103 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:83, output treesize:79 [2019-05-23 11:26:50,191 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:50,192 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:50,193 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:50,194 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:50,195 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:50,196 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:50,197 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 16 [2019-05-23 11:26:50,197 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:50,210 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:50,211 INFO L146 ILogger]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:50,211 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 6 variables, input treesize:83, output treesize:7 [2019-05-23 11:26:50,347 INFO L146 ILogger]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:50,368 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:50,368 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 44 [2019-05-23 11:26:50,368 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:26:50,369 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:26:50,370 INFO L146 ILogger]: CoverageRelationStatistics Valid=219, Invalid=1673, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:26:50,370 INFO L146 ILogger]: Start difference. First operand 65 states and 67 transitions. Second operand 44 states. [2019-05-23 11:26:51,794 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-05-23 11:26:52,528 WARN L146 ILogger]: Spent 252.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2019-05-23 11:26:57,133 WARN L146 ILogger]: Spent 139.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 63 [2019-05-23 11:26:59,040 WARN L146 ILogger]: Spent 1.68 s on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2019-05-23 11:26:59,599 WARN L146 ILogger]: Spent 506.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2019-05-23 11:27:00,513 WARN L146 ILogger]: Spent 123.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2019-05-23 11:27:00,676 WARN L146 ILogger]: Spent 103.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2019-05-23 11:27:00,826 WARN L146 ILogger]: Spent 105.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2019-05-23 11:27:01,078 WARN L146 ILogger]: Spent 138.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2019-05-23 11:27:01,342 WARN L146 ILogger]: Spent 162.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2019-05-23 11:27:02,093 WARN L146 ILogger]: Spent 154.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2019-05-23 11:27:02,627 WARN L146 ILogger]: Spent 206.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2019-05-23 11:27:03,093 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:03,093 INFO L146 ILogger]: Finished difference Result 135 states and 142 transitions. [2019-05-23 11:27:03,093 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-05-23 11:27:03,094 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 64 [2019-05-23 11:27:03,094 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:03,097 INFO L146 ILogger]: With dead ends: 135 [2019-05-23 11:27:03,097 INFO L146 ILogger]: Without dead ends: 101 [2019-05-23 11:27:03,101 INFO L146 ILogger]: 0 DeclaredPredicates, 157 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4312 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1498, Invalid=11382, Unknown=2, NotChecked=0, Total=12882 [2019-05-23 11:27:03,101 INFO L146 ILogger]: Start minimizeSevpa. Operand 101 states. [2019-05-23 11:27:03,108 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 101 to 82. [2019-05-23 11:27:03,108 INFO L146 ILogger]: Start removeUnreachable. Operand 82 states. [2019-05-23 11:27:03,109 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2019-05-23 11:27:03,109 INFO L146 ILogger]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 64 [2019-05-23 11:27:03,110 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:03,110 INFO L146 ILogger]: Abstraction has 82 states and 85 transitions. [2019-05-23 11:27:03,110 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:27:03,110 INFO L146 ILogger]: Start isEmpty. Operand 82 states and 85 transitions. [2019-05-23 11:27:03,111 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 81 [2019-05-23 11:27:03,111 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:03,112 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:03,112 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:03,112 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:03,112 INFO L146 ILogger]: Analyzing trace with hash -113210046, now seen corresponding path program 4 times [2019-05-23 11:27:03,113 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:03,113 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:03,113 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:03,114 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:03,114 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:03,124 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:03,191 INFO L146 ILogger]: Checked inductivity of 89 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-05-23 11:27:03,192 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:27:03,192 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:27:03,192 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:27:03,192 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:27:03,193 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:27:03,193 INFO L146 ILogger]: Start difference. First operand 82 states and 85 transitions. Second operand 5 states. [2019-05-23 11:27:03,232 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:03,232 INFO L146 ILogger]: Finished difference Result 138 states and 143 transitions. [2019-05-23 11:27:03,233 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:27:03,233 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 80 [2019-05-23 11:27:03,233 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:03,234 INFO L146 ILogger]: With dead ends: 138 [2019-05-23 11:27:03,234 INFO L146 ILogger]: Without dead ends: 82 [2019-05-23 11:27:03,235 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:27:03,235 INFO L146 ILogger]: Start minimizeSevpa. Operand 82 states. [2019-05-23 11:27:03,241 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 82 to 82. [2019-05-23 11:27:03,241 INFO L146 ILogger]: Start removeUnreachable. Operand 82 states. [2019-05-23 11:27:03,242 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2019-05-23 11:27:03,242 INFO L146 ILogger]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 80 [2019-05-23 11:27:03,242 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:03,242 INFO L146 ILogger]: Abstraction has 82 states and 83 transitions. [2019-05-23 11:27:03,242 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:27:03,243 INFO L146 ILogger]: Start isEmpty. Operand 82 states and 83 transitions. [2019-05-23 11:27:03,244 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:27:03,244 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:03,244 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:03,244 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:03,245 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:03,245 INFO L146 ILogger]: Analyzing trace with hash -2135124258, now seen corresponding path program 5 times [2019-05-23 11:27:03,245 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:03,245 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:03,246 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:03,246 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:03,246 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:03,270 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:04,641 INFO L146 ILogger]: Checked inductivity of 91 backedges. 7 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:04,642 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:04,642 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:04,651 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:27:04,681 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:27:04,681 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:04,683 INFO L146 ILogger]: Trace formula consists of 128 conjuncts, 50 conjunts are in the unsatisfiable core [2019-05-23 11:27:04,687 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:04,791 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 11:27:04,792 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:04,802 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:04,803 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:04,803 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:27:05,077 INFO L146 ILogger]: treesize reduction 40, result has 23.1 percent of original size [2019-05-23 11:27:05,078 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 28 treesize of output 27 [2019-05-23 11:27:05,078 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,092 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,092 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,093 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-05-23 11:27:05,175 INFO L146 ILogger]: treesize reduction 96, result has 20.0 percent of original size [2019-05-23 11:27:05,176 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2019-05-23 11:27:05,177 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,207 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,208 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,208 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:45 [2019-05-23 11:27:05,400 INFO L146 ILogger]: treesize reduction 171, result has 17.8 percent of original size [2019-05-23 11:27:05,401 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 54 [2019-05-23 11:27:05,402 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,416 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,416 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,416 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2019-05-23 11:27:05,506 INFO L146 ILogger]: treesize reduction 225, result has 13.8 percent of original size [2019-05-23 11:27:05,507 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 61 treesize of output 57 [2019-05-23 11:27:05,508 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,519 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,520 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,520 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:46 [2019-05-23 11:27:05,867 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,868 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,869 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,870 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,872 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,874 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,875 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,875 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 58 [2019-05-23 11:27:05,876 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,896 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,897 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:27:05,897 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:94, output treesize:90 [2019-05-23 11:27:07,753 WARN L146 ILogger]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-05-23 11:27:07,831 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:07,857 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:07,878 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:07,904 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:07,928 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:07,954 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:07,979 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:08,005 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:08,018 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:08,036 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:08,037 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 19 [2019-05-23 11:27:08,038 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:08,149 WARN L146 ILogger]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-05-23 11:27:08,150 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:08,151 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 11:27:08,151 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:87, output treesize:7 [2019-05-23 11:27:08,603 INFO L146 ILogger]: Checked inductivity of 91 backedges. 22 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:08,623 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:08,623 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 31] total 52 [2019-05-23 11:27:08,623 INFO L146 ILogger]: Interpolant automaton has 52 states [2019-05-23 11:27:08,624 INFO L146 ILogger]: Constructing interpolant automaton starting with 52 interpolants. [2019-05-23 11:27:08,625 INFO L146 ILogger]: CoverageRelationStatistics Valid=309, Invalid=2343, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:27:08,625 INFO L146 ILogger]: Start difference. First operand 82 states and 83 transitions. Second operand 52 states. [2019-05-23 11:27:10,166 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-05-23 11:27:12,966 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:12,966 INFO L146 ILogger]: Finished difference Result 106 states and 107 transitions. [2019-05-23 11:27:12,967 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:27:12,967 INFO L146 ILogger]: Start accepts. Automaton has 52 states. Word has length 81 [2019-05-23 11:27:12,968 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:12,969 INFO L146 ILogger]: With dead ends: 106 [2019-05-23 11:27:12,969 INFO L146 ILogger]: Without dead ends: 104 [2019-05-23 11:27:12,973 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2816 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1321, Invalid=8579, Unknown=0, NotChecked=0, Total=9900 [2019-05-23 11:27:12,973 INFO L146 ILogger]: Start minimizeSevpa. Operand 104 states. [2019-05-23 11:27:12,979 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 104 to 92. [2019-05-23 11:27:12,980 INFO L146 ILogger]: Start removeUnreachable. Operand 92 states. [2019-05-23 11:27:12,980 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2019-05-23 11:27:12,981 INFO L146 ILogger]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 81 [2019-05-23 11:27:12,981 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:12,981 INFO L146 ILogger]: Abstraction has 92 states and 93 transitions. [2019-05-23 11:27:12,981 INFO L146 ILogger]: Interpolant automaton has 52 states. [2019-05-23 11:27:12,981 INFO L146 ILogger]: Start isEmpty. Operand 92 states and 93 transitions. [2019-05-23 11:27:12,983 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 92 [2019-05-23 11:27:12,983 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:12,983 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:12,983 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:12,983 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:12,984 INFO L146 ILogger]: Analyzing trace with hash -599806479, now seen corresponding path program 6 times [2019-05-23 11:27:12,984 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:12,984 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:12,985 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:12,985 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:12,985 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:12,994 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:13,675 INFO L146 ILogger]: Checked inductivity of 127 backedges. 56 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:13,675 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:13,675 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:13,683 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:27:13,736 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:27:13,737 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:13,738 INFO L146 ILogger]: Trace formula consists of 143 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:27:13,742 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:13,918 INFO L146 ILogger]: Checked inductivity of 127 backedges. 84 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:13,936 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:13,936 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 26 [2019-05-23 11:27:13,936 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:27:13,937 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:27:13,937 INFO L146 ILogger]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:27:13,937 INFO L146 ILogger]: Start difference. First operand 92 states and 93 transitions. Second operand 26 states. [2019-05-23 11:27:14,438 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:14,438 INFO L146 ILogger]: Finished difference Result 162 states and 164 transitions. [2019-05-23 11:27:14,439 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:27:14,439 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 91 [2019-05-23 11:27:14,439 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:14,440 INFO L146 ILogger]: With dead ends: 162 [2019-05-23 11:27:14,440 INFO L146 ILogger]: Without dead ends: 103 [2019-05-23 11:27:14,441 INFO L146 ILogger]: 0 DeclaredPredicates, 124 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=329, Invalid=1311, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:27:14,442 INFO L146 ILogger]: Start minimizeSevpa. Operand 103 states. [2019-05-23 11:27:14,448 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 103 to 99. [2019-05-23 11:27:14,448 INFO L146 ILogger]: Start removeUnreachable. Operand 99 states. [2019-05-23 11:27:14,449 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2019-05-23 11:27:14,449 INFO L146 ILogger]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 91 [2019-05-23 11:27:14,449 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:14,450 INFO L146 ILogger]: Abstraction has 99 states and 100 transitions. [2019-05-23 11:27:14,450 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:27:14,450 INFO L146 ILogger]: Start isEmpty. Operand 99 states and 100 transitions. [2019-05-23 11:27:14,451 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:27:14,451 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:14,452 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:14,452 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:14,452 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:14,452 INFO L146 ILogger]: Analyzing trace with hash 1700663390, now seen corresponding path program 7 times [2019-05-23 11:27:14,452 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:14,452 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:14,455 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:14,455 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:14,455 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:14,514 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:15,549 INFO L146 ILogger]: Checked inductivity of 155 backedges. 11 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:15,549 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:15,549 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:15,561 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:15,594 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:15,595 INFO L146 ILogger]: Trace formula consists of 152 conjuncts, 58 conjunts are in the unsatisfiable core [2019-05-23 11:27:15,599 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:15,722 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 11:27:15,723 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:15,730 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:15,731 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:15,731 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:27:15,878 INFO L146 ILogger]: treesize reduction 40, result has 23.1 percent of original size [2019-05-23 11:27:15,879 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 28 treesize of output 27 [2019-05-23 11:27:15,880 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:15,889 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:15,890 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:15,890 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-05-23 11:27:15,965 INFO L146 ILogger]: treesize reduction 96, result has 20.0 percent of original size [2019-05-23 11:27:15,966 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2019-05-23 11:27:15,967 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:15,978 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:15,979 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:15,979 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:45 [2019-05-23 11:27:16,213 INFO L146 ILogger]: treesize reduction 171, result has 17.8 percent of original size [2019-05-23 11:27:16,214 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 57 [2019-05-23 11:27:16,215 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,414 WARN L146 ILogger]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-05-23 11:27:16,415 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:16,415 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,415 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:57 [2019-05-23 11:27:16,647 INFO L146 ILogger]: treesize reduction 225, result has 13.8 percent of original size [2019-05-23 11:27:16,648 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 64 treesize of output 60 [2019-05-23 11:27:16,649 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,663 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:16,664 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,664 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:73, output treesize:57 [2019-05-23 11:27:16,949 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,950 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,951 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,953 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,954 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,955 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,956 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,957 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,959 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,960 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:16,961 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:16,961 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 69 [2019-05-23 11:27:16,962 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,981 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:16,982 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,982 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:73, output treesize:69 [2019-05-23 11:27:17,054 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:17,056 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:17,057 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:17,058 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:17,059 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:17,060 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:17,062 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:17,063 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:17,066 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:17,066 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:17,067 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:17,067 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 72 [2019-05-23 11:27:17,068 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:17,085 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:17,086 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:17,086 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:85, output treesize:61 [2019-05-23 11:27:22,396 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:22,398 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:22,399 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:22,401 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:22,401 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:22,402 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:22,403 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:22,404 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:22,405 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:22,406 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:22,408 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:22,408 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 73 [2019-05-23 11:27:22,409 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:22,432 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:22,433 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-05-23 11:27:22,433 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:118, output treesize:114 [2019-05-23 11:27:23,889 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,891 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:23,892 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,893 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,894 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,895 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,896 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,898 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,899 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,900 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,901 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:23,903 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:23,904 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 95 treesize of output 22 [2019-05-23 11:27:23,904 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:23,912 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:23,912 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 11:27:23,913 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:109, output treesize:7 [2019-05-23 11:27:24,132 INFO L146 ILogger]: Checked inductivity of 155 backedges. 35 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:24,150 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:24,151 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 37] total 63 [2019-05-23 11:27:24,151 INFO L146 ILogger]: Interpolant automaton has 63 states [2019-05-23 11:27:24,152 INFO L146 ILogger]: Constructing interpolant automaton starting with 63 interpolants. [2019-05-23 11:27:24,153 INFO L146 ILogger]: CoverageRelationStatistics Valid=409, Invalid=3496, Unknown=1, NotChecked=0, Total=3906 [2019-05-23 11:27:24,153 INFO L146 ILogger]: Start difference. First operand 99 states and 100 transitions. Second operand 63 states. [2019-05-23 11:27:30,419 WARN L146 ILogger]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-05-23 11:27:33,898 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:33,899 INFO L146 ILogger]: Finished difference Result 120 states and 121 transitions. [2019-05-23 11:27:33,899 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:27:33,899 INFO L146 ILogger]: Start accepts. Automaton has 63 states. Word has length 98 [2019-05-23 11:27:33,900 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:33,901 INFO L146 ILogger]: With dead ends: 120 [2019-05-23 11:27:33,901 INFO L146 ILogger]: Without dead ends: 118 [2019-05-23 11:27:33,905 INFO L146 ILogger]: 0 DeclaredPredicates, 185 GetRequests, 62 SyntacticMatches, 8 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3882 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=1668, Invalid=11903, Unknown=1, NotChecked=0, Total=13572 [2019-05-23 11:27:33,906 INFO L146 ILogger]: Start minimizeSevpa. Operand 118 states. [2019-05-23 11:27:33,912 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 118 to 109. [2019-05-23 11:27:33,912 INFO L146 ILogger]: Start removeUnreachable. Operand 109 states. [2019-05-23 11:27:33,913 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2019-05-23 11:27:33,913 INFO L146 ILogger]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 98 [2019-05-23 11:27:33,913 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:33,913 INFO L146 ILogger]: Abstraction has 109 states and 110 transitions. [2019-05-23 11:27:33,914 INFO L146 ILogger]: Interpolant automaton has 63 states. [2019-05-23 11:27:33,914 INFO L146 ILogger]: Start isEmpty. Operand 109 states and 110 transitions. [2019-05-23 11:27:33,915 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 109 [2019-05-23 11:27:33,916 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:33,916 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:33,916 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:33,916 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:33,916 INFO L146 ILogger]: Analyzing trace with hash -1233696911, now seen corresponding path program 8 times [2019-05-23 11:27:33,917 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:33,917 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:33,917 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:33,918 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:33,918 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:33,928 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:34,201 INFO L146 ILogger]: Checked inductivity of 201 backedges. 93 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:34,202 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:34,202 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:34,211 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:27:34,235 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:27:34,235 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:34,237 INFO L146 ILogger]: Trace formula consists of 167 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:27:34,239 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:34,462 INFO L146 ILogger]: Checked inductivity of 201 backedges. 130 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:34,481 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:34,481 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23] total 31 [2019-05-23 11:27:34,481 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:27:34,482 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:27:34,482 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=759, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:27:34,482 INFO L146 ILogger]: Start difference. First operand 109 states and 110 transitions. Second operand 31 states. [2019-05-23 11:27:35,114 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:35,114 INFO L146 ILogger]: Finished difference Result 189 states and 191 transitions. [2019-05-23 11:27:35,115 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:27:35,115 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 108 [2019-05-23 11:27:35,115 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:35,116 INFO L146 ILogger]: With dead ends: 189 [2019-05-23 11:27:35,116 INFO L146 ILogger]: Without dead ends: 120 [2019-05-23 11:27:35,118 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=471, Invalid=1979, Unknown=0, NotChecked=0, Total=2450 [2019-05-23 11:27:35,118 INFO L146 ILogger]: Start minimizeSevpa. Operand 120 states. [2019-05-23 11:27:35,125 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 120 to 116. [2019-05-23 11:27:35,125 INFO L146 ILogger]: Start removeUnreachable. Operand 116 states. [2019-05-23 11:27:35,126 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2019-05-23 11:27:35,126 INFO L146 ILogger]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 108 [2019-05-23 11:27:35,126 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:35,126 INFO L146 ILogger]: Abstraction has 116 states and 117 transitions. [2019-05-23 11:27:35,127 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:27:35,127 INFO L146 ILogger]: Start isEmpty. Operand 116 states and 117 transitions. [2019-05-23 11:27:35,128 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:27:35,128 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:35,128 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:35,129 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:35,129 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:35,129 INFO L146 ILogger]: Analyzing trace with hash 1472621732, now seen corresponding path program 9 times [2019-05-23 11:27:35,129 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:35,129 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:35,135 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:35,135 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:35,135 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:35,168 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:36,416 INFO L146 ILogger]: Checked inductivity of 236 backedges. 15 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:36,416 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:36,416 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:36,431 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:27:36,493 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:27:36,493 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:36,495 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 73 conjunts are in the unsatisfiable core [2019-05-23 11:27:36,497 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:36,619 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 11:27:36,620 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:36,626 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:36,627 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:36,627 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:27:36,830 INFO L146 ILogger]: treesize reduction 40, result has 23.1 percent of original size [2019-05-23 11:27:36,830 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 28 treesize of output 27 [2019-05-23 11:27:36,831 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:36,843 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:36,843 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:36,844 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-05-23 11:27:36,920 INFO L146 ILogger]: treesize reduction 96, result has 20.0 percent of original size [2019-05-23 11:27:36,920 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2019-05-23 11:27:36,921 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:36,931 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:36,931 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:36,932 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:45 [2019-05-23 11:27:37,142 INFO L146 ILogger]: treesize reduction 171, result has 17.8 percent of original size [2019-05-23 11:27:37,143 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 57 [2019-05-23 11:27:37,144 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:37,157 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:37,157 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:37,158 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:57 [2019-05-23 11:27:37,258 INFO L146 ILogger]: treesize reduction 225, result has 13.8 percent of original size [2019-05-23 11:27:37,259 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 64 treesize of output 60 [2019-05-23 11:27:37,259 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:37,273 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:37,273 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:37,274 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:73, output treesize:57 [2019-05-23 11:27:37,555 INFO L146 ILogger]: treesize reduction 264, result has 15.7 percent of original size [2019-05-23 11:27:37,555 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 72 [2019-05-23 11:27:37,556 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:37,572 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:37,573 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:37,573 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:73, output treesize:69 [2019-05-23 11:27:37,705 INFO L146 ILogger]: treesize reduction 337, result has 12.5 percent of original size [2019-05-23 11:27:37,705 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 76 treesize of output 75 [2019-05-23 11:27:37,706 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:37,721 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:37,722 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:37,722 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:85, output treesize:69 [2019-05-23 11:27:38,026 INFO L146 ILogger]: treesize reduction 375, result has 14.0 percent of original size [2019-05-23 11:27:38,027 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 73 treesize of output 84 [2019-05-23 11:27:38,028 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:38,044 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:38,045 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:38,045 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:82, output treesize:78 [2019-05-23 11:27:38,206 INFO L146 ILogger]: treesize reduction 467, result has 11.4 percent of original size [2019-05-23 11:27:38,206 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 85 treesize of output 87 [2019-05-23 11:27:38,207 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:38,223 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:38,224 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:38,224 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:94, output treesize:70 [2019-05-23 11:27:38,676 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2019-05-23 11:27:38,788 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,789 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,790 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,791 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,793 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,794 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,795 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,797 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,798 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,812 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,814 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,814 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,823 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,824 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,824 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:38,825 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:38,825 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 122 treesize of output 88 [2019-05-23 11:27:38,826 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:38,849 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:38,850 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:27:38,851 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:136, output treesize:132 [2019-05-23 11:27:40,449 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,450 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,451 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,452 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,453 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,456 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,457 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:40,458 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,459 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,460 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,461 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,463 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,464 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,465 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,466 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,467 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,468 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:40,470 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:40,470 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 25 [2019-05-23 11:27:40,471 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:40,477 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:40,478 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 11:27:40,478 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:125, output treesize:7 [2019-05-23 11:27:40,881 INFO L146 ILogger]: Checked inductivity of 236 backedges. 63 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:40,901 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:40,901 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 44] total 74 [2019-05-23 11:27:40,901 INFO L146 ILogger]: Interpolant automaton has 74 states [2019-05-23 11:27:40,902 INFO L146 ILogger]: Constructing interpolant automaton starting with 74 interpolants. [2019-05-23 11:27:40,903 INFO L146 ILogger]: CoverageRelationStatistics Valid=547, Invalid=4855, Unknown=0, NotChecked=0, Total=5402 [2019-05-23 11:27:40,903 INFO L146 ILogger]: Start difference. First operand 116 states and 117 transitions. Second operand 74 states.