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/pr2_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:26:08,310 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:26:08,312 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:26:08,324 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:26:08,324 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:26:08,325 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:26:08,326 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:26:08,328 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:26:08,330 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:26:08,330 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:26:08,331 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:26:08,332 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:26:08,333 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:26:08,334 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:26:08,335 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:26:08,336 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:26:08,336 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:26:08,338 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:26:08,340 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:26:08,342 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:26:08,343 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:26:08,344 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:26:08,347 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:26:08,347 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:26:08,347 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:26:08,348 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:26:08,349 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:26:08,350 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:26:08,350 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:26:08,351 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:26:08,352 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:26:08,353 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:26:08,354 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:26:08,354 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:26:08,355 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:26:08,355 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:26:08,355 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:26:08,356 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:26:08,357 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:26:08,357 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:26:08,372 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:26:08,372 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:26:08,373 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:26:08,373 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:26:08,373 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:26:08,374 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:26:08,374 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:26:08,374 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:26:08,374 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:26:08,374 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:26:08,374 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:26:08,375 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:26:08,375 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:26:08,375 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:26:08,375 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:26:08,375 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:26:08,376 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:26:08,376 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:26:08,376 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:26:08,376 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:26:08,376 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:26:08,377 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:26:08,377 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:26:08,377 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:26:08,377 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:26:08,377 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:26:08,378 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:26:08,378 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:26:08,378 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 11:26:08,419 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:26:08,433 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:26:08,436 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:26:08,438 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:26:08,438 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:26:08,439 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/pr2_true-unreach-call.i [2019-05-23 11:26:08,494 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f884043/14c8c40dab624f9eaf8e662b44b848ca/FLAG8c807b59c [2019-05-23 11:26:08,921 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:26:08,921 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/pr2_true-unreach-call.i [2019-05-23 11:26:08,928 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f884043/14c8c40dab624f9eaf8e662b44b848ca/FLAG8c807b59c [2019-05-23 11:26:09,304 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f884043/14c8c40dab624f9eaf8e662b44b848ca [2019-05-23 11:26:09,314 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:26:09,316 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:26:09,317 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:09,317 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:26:09,320 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:26:09,322 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:09" (1/1) ... [2019-05-23 11:26:09,324 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d24e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09, skipping insertion in model container [2019-05-23 11:26:09,325 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:09" (1/1) ... [2019-05-23 11:26:09,332 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:26:09,353 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:26:09,557 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:09,562 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:26:09,595 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:09,625 INFO L146 ILogger]: Completed translation [2019-05-23 11:26:09,626 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09 WrapperNode [2019-05-23 11:26:09,626 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:09,627 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:09,627 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:26:09,627 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:26:09,636 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ... [2019-05-23 11:26:09,645 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ... [2019-05-23 11:26:09,666 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:09,667 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:26:09,667 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:26:09,667 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:26:09,678 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ... [2019-05-23 11:26:09,678 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ... [2019-05-23 11:26:09,680 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ... [2019-05-23 11:26:09,680 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ... [2019-05-23 11:26:09,687 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ... [2019-05-23 11:26:09,786 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ... [2019-05-23 11:26:09,787 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ... [2019-05-23 11:26:09,789 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:26:09,790 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:26:09,790 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:26:09,790 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:26:09,793 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (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 11:26:09,850 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:26:09,850 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:26:09,850 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:26:09,850 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:26:09,850 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:26:09,851 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:26:10,305 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:26:10,306 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:26:10,307 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:10 BoogieIcfgContainer [2019-05-23 11:26:10,307 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:26:10,308 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:26:10,308 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:26:10,311 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:26:10,312 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:26:09" (1/3) ... [2019-05-23 11:26:10,313 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea63d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:10, skipping insertion in model container [2019-05-23 11:26:10,313 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (2/3) ... [2019-05-23 11:26:10,313 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea63d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:10, skipping insertion in model container [2019-05-23 11:26:10,314 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:10" (3/3) ... [2019-05-23 11:26:10,315 INFO L146 ILogger]: Analyzing ICFG pr2_true-unreach-call.i [2019-05-23 11:26:10,325 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:26:10,338 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:26:10,356 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:26:10,386 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:26:10,387 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:26:10,387 INFO L146 ILogger]: Hoare is true [2019-05-23 11:26:10,388 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:26:10,388 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:26:10,388 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:26:10,388 INFO L146 ILogger]: Difference is false [2019-05-23 11:26:10,388 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:26:10,388 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:26:10,406 INFO L146 ILogger]: Start isEmpty. Operand 55 states. [2019-05-23 11:26:10,413 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 29 [2019-05-23 11:26:10,413 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:10,415 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] [2019-05-23 11:26:10,417 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:10,423 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:10,423 INFO L146 ILogger]: Analyzing trace with hash 111381474, now seen corresponding path program 1 times [2019-05-23 11:26:10,425 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:10,426 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:10,471 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:10,471 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:10,471 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:10,535 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:10,647 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 11:26:10,650 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:10,650 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:26:10,654 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:26:10,667 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:26:10,668 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:26:10,670 INFO L146 ILogger]: Start difference. First operand 55 states. Second operand 5 states. [2019-05-23 11:26:11,065 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:11,065 INFO L146 ILogger]: Finished difference Result 120 states and 137 transitions. [2019-05-23 11:26:11,066 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:26:11,067 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 28 [2019-05-23 11:26:11,068 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:11,077 INFO L146 ILogger]: With dead ends: 120 [2019-05-23 11:26:11,078 INFO L146 ILogger]: Without dead ends: 74 [2019-05-23 11:26:11,081 INFO L146 ILogger]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:26:11,100 INFO L146 ILogger]: Start minimizeSevpa. Operand 74 states. [2019-05-23 11:26:11,118 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 74 to 50. [2019-05-23 11:26:11,120 INFO L146 ILogger]: Start removeUnreachable. Operand 50 states. [2019-05-23 11:26:11,121 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-05-23 11:26:11,123 INFO L146 ILogger]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 28 [2019-05-23 11:26:11,123 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:11,124 INFO L146 ILogger]: Abstraction has 50 states and 54 transitions. [2019-05-23 11:26:11,124 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:26:11,124 INFO L146 ILogger]: Start isEmpty. Operand 50 states and 54 transitions. [2019-05-23 11:26:11,125 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:26:11,125 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:11,126 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] [2019-05-23 11:26:11,126 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:11,126 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:11,127 INFO L146 ILogger]: Analyzing trace with hash 398667871, now seen corresponding path program 1 times [2019-05-23 11:26:11,127 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:11,127 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:11,128 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:11,129 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:11,129 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:11,150 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:11,233 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 11:26:11,234 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:11,234 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:26:11,236 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:26:11,236 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:26:11,237 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:11,237 INFO L146 ILogger]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2019-05-23 11:26:11,359 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:11,359 INFO L146 ILogger]: Finished difference Result 82 states and 90 transitions. [2019-05-23 11:26:11,360 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:26:11,360 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 30 [2019-05-23 11:26:11,360 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:11,361 INFO L146 ILogger]: With dead ends: 82 [2019-05-23 11:26:11,361 INFO L146 ILogger]: Without dead ends: 59 [2019-05-23 11:26:11,363 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:11,363 INFO L146 ILogger]: Start minimizeSevpa. Operand 59 states. [2019-05-23 11:26:11,368 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 59 to 51. [2019-05-23 11:26:11,368 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:26:11,369 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2019-05-23 11:26:11,370 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 30 [2019-05-23 11:26:11,370 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:11,370 INFO L146 ILogger]: Abstraction has 51 states and 55 transitions. [2019-05-23 11:26:11,370 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:26:11,370 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 55 transitions. [2019-05-23 11:26:11,372 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:26:11,372 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:11,372 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:11,372 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:11,373 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:11,373 INFO L146 ILogger]: Analyzing trace with hash -64035729, now seen corresponding path program 1 times [2019-05-23 11:26:11,373 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:11,373 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:11,374 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:11,374 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:11,374 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:11,411 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:11,698 WARN L146 ILogger]: Spent 116.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2019-05-23 11:26:12,322 WARN L146 ILogger]: Spent 269.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 7 [2019-05-23 11:26:12,352 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:12,353 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:12,353 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 11:26:12,370 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:12,407 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:12,409 INFO L146 ILogger]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:26:12,419 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:12,538 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 11:26:12,539 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,553 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:12,554 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,554 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2019-05-23 11:26:12,624 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2019-05-23 11:26:12,629 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:12,633 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:12,639 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:12,641 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2019-05-23 11:26:12,642 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,649 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:12,650 INFO L146 ILogger]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,663 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:12,663 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,664 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:20 [2019-05-23 11:26:12,781 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:12,782 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:26:12,784 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,788 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:12,788 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:12,789 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:3 [2019-05-23 11:26:12,823 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:12,843 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:12,844 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2019-05-23 11:26:12,844 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:26:12,844 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:26:12,845 INFO L146 ILogger]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:26:12,845 INFO L146 ILogger]: Start difference. First operand 51 states and 55 transitions. Second operand 14 states. [2019-05-23 11:26:13,808 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:13,809 INFO L146 ILogger]: Finished difference Result 176 states and 192 transitions. [2019-05-23 11:26:13,809 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:26:13,809 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 38 [2019-05-23 11:26:13,810 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:13,813 INFO L146 ILogger]: With dead ends: 176 [2019-05-23 11:26:13,813 INFO L146 ILogger]: Without dead ends: 154 [2019-05-23 11:26:13,814 INFO L146 ILogger]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:26:13,815 INFO L146 ILogger]: Start minimizeSevpa. Operand 154 states. [2019-05-23 11:26:13,824 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 154 to 65. [2019-05-23 11:26:13,824 INFO L146 ILogger]: Start removeUnreachable. Operand 65 states. [2019-05-23 11:26:13,825 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2019-05-23 11:26:13,825 INFO L146 ILogger]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 38 [2019-05-23 11:26:13,826 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:13,826 INFO L146 ILogger]: Abstraction has 65 states and 72 transitions. [2019-05-23 11:26:13,826 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:26:13,826 INFO L146 ILogger]: Start isEmpty. Operand 65 states and 72 transitions. [2019-05-23 11:26:13,827 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:26:13,827 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:13,828 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:13,828 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:13,828 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:13,828 INFO L146 ILogger]: Analyzing trace with hash 471043279, now seen corresponding path program 1 times [2019-05-23 11:26:13,828 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:13,829 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:13,830 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:13,830 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:13,830 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:13,860 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:14,130 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:14,131 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:14,131 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 11:26:14,151 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:14,185 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:14,187 INFO L146 ILogger]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:26:14,190 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:14,263 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 11:26:14,264 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,318 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:14,319 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,319 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-05-23 11:26:14,342 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2019-05-23 11:26:14,346 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:14,348 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:14,352 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:14,353 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2019-05-23 11:26:14,354 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,360 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:14,361 INFO L146 ILogger]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,368 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:14,369 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,369 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:20 [2019-05-23 11:26:14,464 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:14,465 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:26:14,465 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,467 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:14,467 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:14,468 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:3 [2019-05-23 11:26:14,504 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:14,522 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:14,522 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2019-05-23 11:26:14,523 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:26:14,523 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:26:14,524 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:26:14,524 INFO L146 ILogger]: Start difference. First operand 65 states and 72 transitions. Second operand 15 states. [2019-05-23 11:26:15,889 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:15,889 INFO L146 ILogger]: Finished difference Result 239 states and 262 transitions. [2019-05-23 11:26:15,890 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:26:15,890 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 38 [2019-05-23 11:26:15,890 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:15,893 INFO L146 ILogger]: With dead ends: 239 [2019-05-23 11:26:15,893 INFO L146 ILogger]: Without dead ends: 237 [2019-05-23 11:26:15,895 INFO L146 ILogger]: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=625, Invalid=2237, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:26:15,895 INFO L146 ILogger]: Start minimizeSevpa. Operand 237 states. [2019-05-23 11:26:15,907 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 237 to 81. [2019-05-23 11:26:15,907 INFO L146 ILogger]: Start removeUnreachable. Operand 81 states. [2019-05-23 11:26:15,908 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2019-05-23 11:26:15,908 INFO L146 ILogger]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 38 [2019-05-23 11:26:15,908 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:15,909 INFO L146 ILogger]: Abstraction has 81 states and 92 transitions. [2019-05-23 11:26:15,909 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:26:15,909 INFO L146 ILogger]: Start isEmpty. Operand 81 states and 92 transitions. [2019-05-23 11:26:15,910 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:26:15,910 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:15,911 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:15,911 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:15,911 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:15,911 INFO L146 ILogger]: Analyzing trace with hash -1477605249, now seen corresponding path program 2 times [2019-05-23 11:26:15,911 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:15,912 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:15,912 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:15,912 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:15,913 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:15,935 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:16,276 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:16,276 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:16,276 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 11:26:16,286 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:16,319 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:16,319 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:16,322 INFO L146 ILogger]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:26:16,325 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:16,341 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 11:26:16,342 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,352 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,352 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,352 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:26:16,370 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2019-05-23 11:26:16,388 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,401 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,407 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,408 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2019-05-23 11:26:16,408 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,414 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,415 INFO L146 ILogger]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,432 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,433 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,433 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:46, output treesize:34 [2019-05-23 11:26:16,577 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,578 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,578 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,579 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,580 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2019-05-23 11:26:16,580 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,635 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,635 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,636 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2019-05-23 11:26:16,665 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,666 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,669 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,672 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,673 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,675 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,677 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,677 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 49 treesize of output 50 [2019-05-23 11:26:16,678 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,693 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,694 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 11:26:16,694 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:55, output treesize:51 [2019-05-23 11:26:16,843 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,844 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,845 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,845 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,846 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:16,847 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,848 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 16 [2019-05-23 11:26:16,849 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:16,853 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:16,854 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 11:26:16,854 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:3 [2019-05-23 11:26:16,901 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:16,925 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:16,925 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 20 [2019-05-23 11:26:16,926 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:26:16,926 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:26:16,927 INFO L146 ILogger]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:26:16,927 INFO L146 ILogger]: Start difference. First operand 81 states and 92 transitions. Second operand 20 states. [2019-05-23 11:26:18,633 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:18,634 INFO L146 ILogger]: Finished difference Result 303 states and 337 transitions. [2019-05-23 11:26:18,634 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:26:18,634 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 46 [2019-05-23 11:26:18,635 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:18,636 INFO L146 ILogger]: With dead ends: 303 [2019-05-23 11:26:18,636 INFO L146 ILogger]: Without dead ends: 270 [2019-05-23 11:26:18,638 INFO L146 ILogger]: 0 DeclaredPredicates, 85 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=353, Invalid=1627, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:26:18,638 INFO L146 ILogger]: Start minimizeSevpa. Operand 270 states. [2019-05-23 11:26:18,648 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 270 to 98. [2019-05-23 11:26:18,649 INFO L146 ILogger]: Start removeUnreachable. Operand 98 states. [2019-05-23 11:26:18,650 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2019-05-23 11:26:18,650 INFO L146 ILogger]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 46 [2019-05-23 11:26:18,651 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:18,651 INFO L146 ILogger]: Abstraction has 98 states and 113 transitions. [2019-05-23 11:26:18,651 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:26:18,651 INFO L146 ILogger]: Start isEmpty. Operand 98 states and 113 transitions. [2019-05-23 11:26:18,653 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:26:18,653 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:18,653 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:18,653 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:18,653 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:18,653 INFO L146 ILogger]: Analyzing trace with hash 643027167, now seen corresponding path program 1 times [2019-05-23 11:26:18,654 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:18,654 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:18,654 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:18,655 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:18,655 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:18,663 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:18,738 INFO L146 ILogger]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:18,739 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:18,739 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:26:18,739 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:26:18,740 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:26:18,740 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:26:18,740 INFO L146 ILogger]: Start difference. First operand 98 states and 113 transitions. Second operand 3 states. [2019-05-23 11:26:18,790 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:18,790 INFO L146 ILogger]: Finished difference Result 162 states and 185 transitions. [2019-05-23 11:26:18,792 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:26:18,792 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 46 [2019-05-23 11:26:18,793 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:18,794 INFO L146 ILogger]: With dead ends: 162 [2019-05-23 11:26:18,794 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:26:18,795 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:26:18,795 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:26:18,809 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 106. [2019-05-23 11:26:18,810 INFO L146 ILogger]: Start removeUnreachable. Operand 106 states. [2019-05-23 11:26:18,816 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2019-05-23 11:26:18,816 INFO L146 ILogger]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 46 [2019-05-23 11:26:18,816 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:18,816 INFO L146 ILogger]: Abstraction has 106 states and 122 transitions. [2019-05-23 11:26:18,816 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:26:18,816 INFO L146 ILogger]: Start isEmpty. Operand 106 states and 122 transitions. [2019-05-23 11:26:18,822 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 53 [2019-05-23 11:26:18,822 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:18,822 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:18,822 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:18,823 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:18,823 INFO L146 ILogger]: Analyzing trace with hash 2076610334, now seen corresponding path program 1 times [2019-05-23 11:26:18,823 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:18,823 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:18,824 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:18,824 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:18,824 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:18,839 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:19,077 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:19,078 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:19,078 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 11:26:19,089 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:19,105 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:19,106 INFO L146 ILogger]: Trace formula consists of 84 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:26:19,108 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:19,239 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:26:19,239 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:19,242 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:19,243 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:19,243 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-05-23 11:26:19,558 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:26:19,558 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:19,559 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:19,559 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:19,559 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:26:19,588 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:19,611 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:19,612 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2019-05-23 11:26:19,612 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:26:19,612 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:26:19,613 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:26:19,613 INFO L146 ILogger]: Start difference. First operand 106 states and 122 transitions. Second operand 20 states. [2019-05-23 11:26:20,844 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:20,845 INFO L146 ILogger]: Finished difference Result 267 states and 295 transitions. [2019-05-23 11:26:20,845 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:26:20,845 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 52 [2019-05-23 11:26:20,846 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:20,847 INFO L146 ILogger]: With dead ends: 267 [2019-05-23 11:26:20,847 INFO L146 ILogger]: Without dead ends: 265 [2019-05-23 11:26:20,850 INFO L146 ILogger]: 0 DeclaredPredicates, 99 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=657, Invalid=2423, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:26:20,850 INFO L146 ILogger]: Start minimizeSevpa. Operand 265 states. [2019-05-23 11:26:20,859 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 265 to 144. [2019-05-23 11:26:20,859 INFO L146 ILogger]: Start removeUnreachable. Operand 144 states. [2019-05-23 11:26:20,861 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 144 states to 144 states and 165 transitions. [2019-05-23 11:26:20,861 INFO L146 ILogger]: Start accepts. Automaton has 144 states and 165 transitions. Word has length 52 [2019-05-23 11:26:20,861 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:20,861 INFO L146 ILogger]: Abstraction has 144 states and 165 transitions. [2019-05-23 11:26:20,861 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:26:20,862 INFO L146 ILogger]: Start isEmpty. Operand 144 states and 165 transitions. [2019-05-23 11:26:20,863 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 53 [2019-05-23 11:26:20,863 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:20,863 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:20,864 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:20,864 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:20,864 INFO L146 ILogger]: Analyzing trace with hash -1535412546, now seen corresponding path program 1 times [2019-05-23 11:26:20,864 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:20,864 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:20,865 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:20,865 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:20,865 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:20,884 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:21,077 INFO L146 ILogger]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:21,077 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:21,077 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 11:26:21,086 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:21,101 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:21,102 INFO L146 ILogger]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:26:21,104 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:21,191 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:26:21,191 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,201 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:21,202 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,202 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2019-05-23 11:26:21,283 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:26:21,283 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,309 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:21,310 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:21,310 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:26:21,329 INFO L146 ILogger]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:21,348 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:21,348 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2019-05-23 11:26:21,348 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:26:21,349 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:26:21,349 INFO L146 ILogger]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:26:21,349 INFO L146 ILogger]: Start difference. First operand 144 states and 165 transitions. Second operand 20 states. [2019-05-23 11:26:22,149 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:22,149 INFO L146 ILogger]: Finished difference Result 316 states and 354 transitions. [2019-05-23 11:26:22,150 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:26:22,150 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 52 [2019-05-23 11:26:22,150 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:22,152 INFO L146 ILogger]: With dead ends: 316 [2019-05-23 11:26:22,153 INFO L146 ILogger]: Without dead ends: 249 [2019-05-23 11:26:22,154 INFO L146 ILogger]: 0 DeclaredPredicates, 76 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:26:22,154 INFO L146 ILogger]: Start minimizeSevpa. Operand 249 states. [2019-05-23 11:26:22,163 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 249 to 183. [2019-05-23 11:26:22,163 INFO L146 ILogger]: Start removeUnreachable. Operand 183 states. [2019-05-23 11:26:22,164 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 206 transitions. [2019-05-23 11:26:22,165 INFO L146 ILogger]: Start accepts. Automaton has 183 states and 206 transitions. Word has length 52 [2019-05-23 11:26:22,165 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:22,165 INFO L146 ILogger]: Abstraction has 183 states and 206 transitions. [2019-05-23 11:26:22,165 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:26:22,165 INFO L146 ILogger]: Start isEmpty. Operand 183 states and 206 transitions. [2019-05-23 11:26:22,166 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:26:22,167 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:22,167 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:22,167 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:22,167 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:22,167 INFO L146 ILogger]: Analyzing trace with hash -833062033, now seen corresponding path program 1 times [2019-05-23 11:26:22,168 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:22,168 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:22,168 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:22,169 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:22,169 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:22,187 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:22,866 WARN L146 ILogger]: Spent 209.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2019-05-23 11:26:23,297 INFO L146 ILogger]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:23,297 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:23,297 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 11:26:23,306 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:23,323 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:23,324 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:26:23,326 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:23,377 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 11:26:23,377 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:23,385 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:23,385 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:23,385 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:26:23,451 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,452 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2019-05-23 11:26:23,453 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:23,461 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:23,462 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:23,462 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2019-05-23 11:26:23,570 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,571 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,573 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,574 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:23,575 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2019-05-23 11:26:23,576 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:23,589 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:23,589 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:23,590 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:38 [2019-05-23 11:26:23,649 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,650 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,651 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,665 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,665 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,666 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,667 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:23,667 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 45 treesize of output 50 [2019-05-23 11:26:23,668 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:23,682 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:23,683 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:23,683 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:50 [2019-05-23 11:26:23,990 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,992 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,997 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:23,999 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,000 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,002 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,003 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,004 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,005 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,005 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,007 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:24,007 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 75 treesize of output 65 [2019-05-23 11:26:24,008 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,061 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:24,062 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 11:26:24,063 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:86, output treesize:82 [2019-05-23 11:26:24,114 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,115 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,116 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,117 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,118 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,120 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,121 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,122 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,123 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,124 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,126 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,127 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,131 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,132 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,133 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,134 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:24,134 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 90 treesize of output 77 [2019-05-23 11:26:24,135 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,152 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:24,154 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 11:26:24,154 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:101, output treesize:97 [2019-05-23 11:26:24,273 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,273 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,274 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,275 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,276 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,276 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,277 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,278 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,279 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,280 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,282 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,283 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,284 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,285 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:24,286 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:24,287 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 19 [2019-05-23 11:26:24,288 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,292 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:24,293 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:24,293 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:91, output treesize:3 [2019-05-23 11:26:24,338 INFO L146 ILogger]: Checked inductivity of 27 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:24,356 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:24,357 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32 [2019-05-23 11:26:24,358 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:26:24,358 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:26:24,358 INFO L146 ILogger]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:26:24,358 INFO L146 ILogger]: Start difference. First operand 183 states and 206 transitions. Second operand 32 states. [2019-05-23 11:26:28,362 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:28,362 INFO L146 ILogger]: Finished difference Result 350 states and 378 transitions. [2019-05-23 11:26:28,363 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:26:28,363 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 54 [2019-05-23 11:26:28,363 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:28,364 INFO L146 ILogger]: With dead ends: 350 [2019-05-23 11:26:28,364 INFO L146 ILogger]: Without dead ends: 295 [2019-05-23 11:26:28,366 INFO L146 ILogger]: 0 DeclaredPredicates, 108 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=677, Invalid=3611, Unknown=2, NotChecked=0, Total=4290 [2019-05-23 11:26:28,367 INFO L146 ILogger]: Start minimizeSevpa. Operand 295 states. [2019-05-23 11:26:28,374 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 295 to 151. [2019-05-23 11:26:28,374 INFO L146 ILogger]: Start removeUnreachable. Operand 151 states. [2019-05-23 11:26:28,375 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 151 states to 151 states and 168 transitions. [2019-05-23 11:26:28,375 INFO L146 ILogger]: Start accepts. Automaton has 151 states and 168 transitions. Word has length 54 [2019-05-23 11:26:28,375 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:28,375 INFO L146 ILogger]: Abstraction has 151 states and 168 transitions. [2019-05-23 11:26:28,376 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:26:28,376 INFO L146 ILogger]: Start isEmpty. Operand 151 states and 168 transitions. [2019-05-23 11:26:28,376 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 61 [2019-05-23 11:26:28,377 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:28,377 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:28,377 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:28,377 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:28,377 INFO L146 ILogger]: Analyzing trace with hash 427933390, now seen corresponding path program 1 times [2019-05-23 11:26:28,378 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:28,378 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:28,378 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,379 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:28,379 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,384 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:28,445 INFO L146 ILogger]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:26:28,446 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:28,446 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:26:28,446 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:26:28,447 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:26:28,447 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:26:28,447 INFO L146 ILogger]: Start difference. First operand 151 states and 168 transitions. Second operand 3 states. [2019-05-23 11:26:28,614 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:28,614 INFO L146 ILogger]: Finished difference Result 205 states and 225 transitions. [2019-05-23 11:26:28,615 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:26:28,615 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 60 [2019-05-23 11:26:28,615 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:28,616 INFO L146 ILogger]: With dead ends: 205 [2019-05-23 11:26:28,617 INFO L146 ILogger]: Without dead ends: 153 [2019-05-23 11:26:28,617 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:26:28,618 INFO L146 ILogger]: Start minimizeSevpa. Operand 153 states. [2019-05-23 11:26:28,625 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 153 to 131. [2019-05-23 11:26:28,625 INFO L146 ILogger]: Start removeUnreachable. Operand 131 states. [2019-05-23 11:26:28,626 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2019-05-23 11:26:28,626 INFO L146 ILogger]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 60 [2019-05-23 11:26:28,626 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:28,626 INFO L146 ILogger]: Abstraction has 131 states and 142 transitions. [2019-05-23 11:26:28,627 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:26:28,627 INFO L146 ILogger]: Start isEmpty. Operand 131 states and 142 transitions. [2019-05-23 11:26:28,627 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:26:28,627 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:28,628 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:28,628 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:28,628 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:28,628 INFO L146 ILogger]: Analyzing trace with hash -2002101363, now seen corresponding path program 2 times [2019-05-23 11:26:28,629 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:28,629 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:28,630 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,630 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:28,630 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:28,657 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:29,077 WARN L146 ILogger]: Spent 218.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 5 [2019-05-23 11:26:29,496 INFO L146 ILogger]: Checked inductivity of 31 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:29,496 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:29,496 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 11:26:29,508 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:29,535 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:29,535 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:29,536 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:26:29,539 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:29,830 INFO L146 ILogger]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:29,848 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:29,848 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2019-05-23 11:26:29,848 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:26:29,848 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:26:29,849 INFO L146 ILogger]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:26:29,849 INFO L146 ILogger]: Start difference. First operand 131 states and 142 transitions. Second operand 23 states. [2019-05-23 11:26:30,804 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:30,805 INFO L146 ILogger]: Finished difference Result 262 states and 281 transitions. [2019-05-23 11:26:30,807 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:26:30,807 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 66 [2019-05-23 11:26:30,807 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:30,808 INFO L146 ILogger]: With dead ends: 262 [2019-05-23 11:26:30,809 INFO L146 ILogger]: Without dead ends: 175 [2019-05-23 11:26:30,810 INFO L146 ILogger]: 0 DeclaredPredicates, 88 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:26:30,810 INFO L146 ILogger]: Start minimizeSevpa. Operand 175 states. [2019-05-23 11:26:30,816 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 175 to 151. [2019-05-23 11:26:30,817 INFO L146 ILogger]: Start removeUnreachable. Operand 151 states. [2019-05-23 11:26:30,817 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2019-05-23 11:26:30,818 INFO L146 ILogger]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 66 [2019-05-23 11:26:30,818 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:30,818 INFO L146 ILogger]: Abstraction has 151 states and 162 transitions. [2019-05-23 11:26:30,818 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:26:30,818 INFO L146 ILogger]: Start isEmpty. Operand 151 states and 162 transitions. [2019-05-23 11:26:30,819 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:26:30,819 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:30,819 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:30,819 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:30,820 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:30,820 INFO L146 ILogger]: Analyzing trace with hash 248072093, now seen corresponding path program 3 times [2019-05-23 11:26:30,820 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:30,820 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:30,821 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:30,821 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:30,821 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:30,834 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:31,141 INFO L146 ILogger]: Checked inductivity of 40 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:31,141 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:31,141 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 11:26:31,149 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:31,170 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:26:31,170 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:31,171 INFO L146 ILogger]: Trace formula consists of 113 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:26:31,174 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:31,281 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 11:26:31,281 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,288 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:31,289 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,289 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:26:31,373 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:31,374 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:26:31,375 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,382 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:31,383 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,383 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:26:31,414 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:31,415 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:26:31,416 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,459 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:31,460 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 11:26:31,460 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:31 [2019-05-23 11:26:31,674 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:31,675 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:31,675 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:26:31,676 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:31,744 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:31,745 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 11:26:31,745 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:7 [2019-05-23 11:26:31,801 INFO L146 ILogger]: Checked inductivity of 40 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-05-23 11:26:31,819 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:31,820 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2019-05-23 11:26:31,820 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:26:31,820 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:26:31,821 INFO L146 ILogger]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:26:31,821 INFO L146 ILogger]: Start difference. First operand 151 states and 162 transitions. Second operand 28 states. [2019-05-23 11:26:34,562 WARN L146 ILogger]: Spent 157.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2019-05-23 11:26:35,529 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:35,529 INFO L146 ILogger]: Finished difference Result 378 states and 398 transitions. [2019-05-23 11:26:35,530 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-05-23 11:26:35,530 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 74 [2019-05-23 11:26:35,530 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:35,531 INFO L146 ILogger]: With dead ends: 378 [2019-05-23 11:26:35,531 INFO L146 ILogger]: Without dead ends: 356 [2019-05-23 11:26:35,534 INFO L146 ILogger]: 0 DeclaredPredicates, 151 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2245 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=811, Invalid=7199, Unknown=0, NotChecked=0, Total=8010 [2019-05-23 11:26:35,535 INFO L146 ILogger]: Start minimizeSevpa. Operand 356 states. [2019-05-23 11:26:35,545 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 356 to 201. [2019-05-23 11:26:35,545 INFO L146 ILogger]: Start removeUnreachable. Operand 201 states. [2019-05-23 11:26:35,546 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 201 states to 201 states and 213 transitions. [2019-05-23 11:26:35,546 INFO L146 ILogger]: Start accepts. Automaton has 201 states and 213 transitions. Word has length 74 [2019-05-23 11:26:35,547 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:35,547 INFO L146 ILogger]: Abstraction has 201 states and 213 transitions. [2019-05-23 11:26:35,547 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:26:35,547 INFO L146 ILogger]: Start isEmpty. Operand 201 states and 213 transitions. [2019-05-23 11:26:35,548 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:26:35,548 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:35,548 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:35,549 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:35,549 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:35,549 INFO L146 ILogger]: Analyzing trace with hash -1444145251, now seen corresponding path program 1 times [2019-05-23 11:26:35,549 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:35,549 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:35,550 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,550 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:35,550 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,559 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:35,745 INFO L146 ILogger]: Checked inductivity of 40 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-05-23 11:26:35,745 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:35,746 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:26:35,746 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:26:35,746 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:26:35,746 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:26:35,746 INFO L146 ILogger]: Start difference. First operand 201 states and 213 transitions. Second operand 5 states. [2019-05-23 11:26:35,780 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:35,781 INFO L146 ILogger]: Finished difference Result 277 states and 291 transitions. [2019-05-23 11:26:35,784 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:26:35,784 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 74 [2019-05-23 11:26:35,784 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:35,785 INFO L146 ILogger]: With dead ends: 277 [2019-05-23 11:26:35,785 INFO L146 ILogger]: Without dead ends: 221 [2019-05-23 11:26:35,786 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:26:35,786 INFO L146 ILogger]: Start minimizeSevpa. Operand 221 states. [2019-05-23 11:26:35,794 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 221 to 183. [2019-05-23 11:26:35,794 INFO L146 ILogger]: Start removeUnreachable. Operand 183 states. [2019-05-23 11:26:35,795 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 192 transitions. [2019-05-23 11:26:35,795 INFO L146 ILogger]: Start accepts. Automaton has 183 states and 192 transitions. Word has length 74 [2019-05-23 11:26:35,796 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:35,796 INFO L146 ILogger]: Abstraction has 183 states and 192 transitions. [2019-05-23 11:26:35,796 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:26:35,796 INFO L146 ILogger]: Start isEmpty. Operand 183 states and 192 transitions. [2019-05-23 11:26:35,797 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 77 [2019-05-23 11:26:35,797 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:35,797 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:35,797 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:35,797 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:35,798 INFO L146 ILogger]: Analyzing trace with hash 1676512026, now seen corresponding path program 1 times [2019-05-23 11:26:35,798 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:35,798 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:35,799 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,799 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:35,799 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:35,812 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:36,213 INFO L146 ILogger]: Checked inductivity of 42 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:26:36,214 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:36,214 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 11:26:36,222 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:36,242 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:36,243 INFO L146 ILogger]: Trace formula consists of 116 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:26:36,249 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:36,313 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 11:26:36,314 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,323 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,323 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,323 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-05-23 11:26:36,345 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:36,347 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:26:36,347 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,353 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,354 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,354 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:26:36,500 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,500 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:26:36,501 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,502 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:36,502 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:36,502 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:3 [2019-05-23 11:26:36,564 INFO L146 ILogger]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:36,583 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:36,583 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 27 [2019-05-23 11:26:36,583 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:26:36,584 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:26:36,584 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:26:36,584 INFO L146 ILogger]: Start difference. First operand 183 states and 192 transitions. Second operand 27 states. [2019-05-23 11:26:36,791 WARN L146 ILogger]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-05-23 11:26:39,242 WARN L146 ILogger]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-05-23 11:26:40,460 WARN L146 ILogger]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-05-23 11:26:40,723 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:40,724 INFO L146 ILogger]: Finished difference Result 351 states and 366 transitions. [2019-05-23 11:26:40,724 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:26:40,724 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 76 [2019-05-23 11:26:40,725 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:40,726 INFO L146 ILogger]: With dead ends: 351 [2019-05-23 11:26:40,726 INFO L146 ILogger]: Without dead ends: 313 [2019-05-23 11:26:40,728 INFO L146 ILogger]: 0 DeclaredPredicates, 138 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=811, Invalid=4445, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:26:40,729 INFO L146 ILogger]: Start minimizeSevpa. Operand 313 states. [2019-05-23 11:26:40,739 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 313 to 213. [2019-05-23 11:26:40,739 INFO L146 ILogger]: Start removeUnreachable. Operand 213 states. [2019-05-23 11:26:40,740 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 213 states to 213 states and 222 transitions. [2019-05-23 11:26:40,740 INFO L146 ILogger]: Start accepts. Automaton has 213 states and 222 transitions. Word has length 76 [2019-05-23 11:26:40,741 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:40,741 INFO L146 ILogger]: Abstraction has 213 states and 222 transitions. [2019-05-23 11:26:40,741 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:26:40,741 INFO L146 ILogger]: Start isEmpty. Operand 213 states and 222 transitions. [2019-05-23 11:26:40,742 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 83 [2019-05-23 11:26:40,742 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:40,742 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:40,742 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:40,743 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:40,743 INFO L146 ILogger]: Analyzing trace with hash 320565901, now seen corresponding path program 2 times [2019-05-23 11:26:40,743 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:40,743 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:40,744 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:40,744 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:40,744 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:40,755 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:41,138 INFO L146 ILogger]: Checked inductivity of 57 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:41,139 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:41,139 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:41,148 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:41,169 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:41,169 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:41,170 INFO L146 ILogger]: Trace formula consists of 123 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:26:41,172 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:41,354 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 11:26:41,354 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,364 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,365 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,365 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-05-23 11:26:41,410 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,410 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2019-05-23 11:26:41,411 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,423 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,423 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,423 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2019-05-23 11:26:41,562 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,564 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,565 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,566 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,567 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 37 [2019-05-23 11:26:41,567 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,585 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,585 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,585 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:49 [2019-05-23 11:26:41,641 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,642 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,643 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,644 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,646 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,647 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:41,648 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,649 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 68 treesize of output 55 [2019-05-23 11:26:41,649 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:41,663 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:41,664 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 11:26:41,664 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:74, output treesize:76 [2019-05-23 11:26:42,877 INFO L146 ILogger]: Checked inductivity of 57 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:42,896 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:42,896 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 40 [2019-05-23 11:26:42,896 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:26:42,897 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:26:42,897 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=1389, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:26:42,897 INFO L146 ILogger]: Start difference. First operand 213 states and 222 transitions. Second operand 40 states. [2019-05-23 11:26:47,740 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:47,740 INFO L146 ILogger]: Finished difference Result 381 states and 395 transitions. [2019-05-23 11:26:47,741 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:26:47,741 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 82 [2019-05-23 11:26:47,741 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:47,742 INFO L146 ILogger]: With dead ends: 381 [2019-05-23 11:26:47,742 INFO L146 ILogger]: Without dead ends: 359 [2019-05-23 11:26:47,746 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1730 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1001, Invalid=6139, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:26:47,746 INFO L146 ILogger]: Start minimizeSevpa. Operand 359 states. [2019-05-23 11:26:47,757 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 359 to 204. [2019-05-23 11:26:47,757 INFO L146 ILogger]: Start removeUnreachable. Operand 204 states. [2019-05-23 11:26:47,758 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 204 states to 204 states and 212 transitions. [2019-05-23 11:26:47,758 INFO L146 ILogger]: Start accepts. Automaton has 204 states and 212 transitions. Word has length 82 [2019-05-23 11:26:47,758 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:47,758 INFO L146 ILogger]: Abstraction has 204 states and 212 transitions. [2019-05-23 11:26:47,758 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:26:47,758 INFO L146 ILogger]: Start isEmpty. Operand 204 states and 212 transitions. [2019-05-23 11:26:47,759 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 85 [2019-05-23 11:26:47,759 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:47,760 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:26:47,760 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:47,760 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:47,760 INFO L146 ILogger]: Analyzing trace with hash -1803320726, now seen corresponding path program 4 times [2019-05-23 11:26:47,760 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:47,760 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:47,761 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:47,761 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:47,761 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:47,773 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:48,040 INFO L146 ILogger]: Checked inductivity of 59 backedges. 10 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:48,041 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:48,041 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:48,049 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:48,072 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:48,072 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:48,073 INFO L146 ILogger]: Trace formula consists of 124 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:26:48,075 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:48,183 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 11:26:48,183 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,189 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,189 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,190 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:26:48,241 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,242 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2019-05-23 11:26:48,242 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,252 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,252 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,253 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2019-05-23 11:26:48,347 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,348 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,348 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,349 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,349 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 37 [2019-05-23 11:26:48,350 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,361 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,362 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,362 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:43 [2019-05-23 11:26:48,406 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,407 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,408 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,408 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,409 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,410 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,411 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,411 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 53 treesize of output 52 [2019-05-23 11:26:48,412 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,433 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,434 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 11:26:48,434 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:55 [2019-05-23 11:26:48,906 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,909 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,910 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,911 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,911 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:48,913 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,913 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 16 [2019-05-23 11:26:48,913 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,916 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,916 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 11:26:48,916 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:3 [2019-05-23 11:26:48,960 INFO L146 ILogger]: Checked inductivity of 59 backedges. 10 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:48,979 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:48,979 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 33 [2019-05-23 11:26:48,979 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:26:48,979 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:26:48,980 INFO L146 ILogger]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:26:48,980 INFO L146 ILogger]: Start difference. First operand 204 states and 212 transitions. Second operand 33 states. [2019-05-23 11:26:52,207 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:52,207 INFO L146 ILogger]: Finished difference Result 417 states and 432 transitions. [2019-05-23 11:26:52,207 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-05-23 11:26:52,207 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 84 [2019-05-23 11:26:52,208 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:52,209 INFO L146 ILogger]: With dead ends: 417 [2019-05-23 11:26:52,209 INFO L146 ILogger]: Without dead ends: 395 [2019-05-23 11:26:52,212 INFO L146 ILogger]: 0 DeclaredPredicates, 151 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=777, Invalid=5865, Unknown=0, NotChecked=0, Total=6642 [2019-05-23 11:26:52,213 INFO L146 ILogger]: Start minimizeSevpa. Operand 395 states. [2019-05-23 11:26:52,223 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 395 to 177. [2019-05-23 11:26:52,223 INFO L146 ILogger]: Start removeUnreachable. Operand 177 states. [2019-05-23 11:26:52,223 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 177 states to 177 states and 184 transitions. [2019-05-23 11:26:52,224 INFO L146 ILogger]: Start accepts. Automaton has 177 states and 184 transitions. Word has length 84 [2019-05-23 11:26:52,224 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:52,224 INFO L146 ILogger]: Abstraction has 177 states and 184 transitions. [2019-05-23 11:26:52,224 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:26:52,224 INFO L146 ILogger]: Start isEmpty. Operand 177 states and 184 transitions. [2019-05-23 11:26:52,225 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:26:52,225 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:52,225 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:52,225 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:52,226 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:52,226 INFO L146 ILogger]: Analyzing trace with hash 1269405964, now seen corresponding path program 3 times [2019-05-23 11:26:52,226 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:52,226 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:52,227 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:52,227 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:52,227 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:52,241 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:52,524 INFO L146 ILogger]: Checked inductivity of 76 backedges. 12 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:52,525 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:52,525 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:52,534 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:52,559 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:26:52,559 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:52,560 INFO L146 ILogger]: Trace formula consists of 132 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:26:52,562 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:52,638 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 11:26:52,638 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:52,645 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:52,646 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 11:26:52,646 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:22 [2019-05-23 11:26:52,845 INFO L146 ILogger]: Checked inductivity of 76 backedges. 12 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:52,864 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:52,864 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 26 [2019-05-23 11:26:52,865 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:26:52,865 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:26:52,865 INFO L146 ILogger]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:26:52,865 INFO L146 ILogger]: Start difference. First operand 177 states and 184 transitions. Second operand 26 states. [2019-05-23 11:26:54,291 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:54,291 INFO L146 ILogger]: Finished difference Result 284 states and 294 transitions. [2019-05-23 11:26:54,292 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:26:54,293 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 88 [2019-05-23 11:26:54,293 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:54,294 INFO L146 ILogger]: With dead ends: 284 [2019-05-23 11:26:54,294 INFO L146 ILogger]: Without dead ends: 262 [2019-05-23 11:26:54,295 INFO L146 ILogger]: 0 DeclaredPredicates, 128 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=280, Invalid=2072, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:26:54,296 INFO L146 ILogger]: Start minimizeSevpa. Operand 262 states. [2019-05-23 11:26:54,306 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 262 to 191. [2019-05-23 11:26:54,306 INFO L146 ILogger]: Start removeUnreachable. Operand 191 states. [2019-05-23 11:26:54,307 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 191 states to 191 states and 198 transitions. [2019-05-23 11:26:54,307 INFO L146 ILogger]: Start accepts. Automaton has 191 states and 198 transitions. Word has length 88 [2019-05-23 11:26:54,307 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:54,307 INFO L146 ILogger]: Abstraction has 191 states and 198 transitions. [2019-05-23 11:26:54,307 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:26:54,307 INFO L146 ILogger]: Start isEmpty. Operand 191 states and 198 transitions. [2019-05-23 11:26:54,308 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 91 [2019-05-23 11:26:54,308 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:54,309 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:54,309 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:54,309 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:54,309 INFO L146 ILogger]: Analyzing trace with hash 1162206665, now seen corresponding path program 5 times [2019-05-23 11:26:54,309 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:54,309 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:54,310 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:54,310 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:54,310 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:54,321 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:54,879 INFO L146 ILogger]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:54,879 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:54,879 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:54,888 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:26:54,920 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:26:54,920 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:54,922 INFO L146 ILogger]: Trace formula consists of 135 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:26:54,923 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:55,057 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:26:55,057 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:55,061 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:55,061 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:55,061 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-05-23 11:26:55,297 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:26:55,297 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:55,298 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:55,298 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:55,299 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:26:55,363 INFO L146 ILogger]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:55,382 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:55,382 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2019-05-23 11:26:55,382 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:26:55,383 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:26:55,383 INFO L146 ILogger]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:26:55,383 INFO L146 ILogger]: Start difference. First operand 191 states and 198 transitions. Second operand 32 states. [2019-05-23 11:26:57,248 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:57,248 INFO L146 ILogger]: Finished difference Result 329 states and 341 transitions. [2019-05-23 11:26:57,248 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:26:57,249 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 90 [2019-05-23 11:26:57,249 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:57,251 INFO L146 ILogger]: With dead ends: 329 [2019-05-23 11:26:57,251 INFO L146 ILogger]: Without dead ends: 327 [2019-05-23 11:26:57,253 INFO L146 ILogger]: 0 DeclaredPredicates, 164 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2390 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=999, Invalid=6833, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:26:57,253 INFO L146 ILogger]: Start minimizeSevpa. Operand 327 states. [2019-05-23 11:26:57,265 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 327 to 221. [2019-05-23 11:26:57,265 INFO L146 ILogger]: Start removeUnreachable. Operand 221 states. [2019-05-23 11:26:57,265 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions. [2019-05-23 11:26:57,265 INFO L146 ILogger]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 90 [2019-05-23 11:26:57,266 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:57,266 INFO L146 ILogger]: Abstraction has 221 states and 229 transitions. [2019-05-23 11:26:57,266 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:26:57,266 INFO L146 ILogger]: Start isEmpty. Operand 221 states and 229 transitions. [2019-05-23 11:26:57,267 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 103 [2019-05-23 11:26:57,267 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:57,267 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:26:57,268 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:57,268 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:57,268 INFO L146 ILogger]: Analyzing trace with hash -1878627077, now seen corresponding path program 4 times [2019-05-23 11:26:57,268 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:57,268 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:57,269 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:57,269 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:57,269 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:57,278 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:58,057 INFO L146 ILogger]: Checked inductivity of 126 backedges. 76 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:58,057 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:58,057 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:26:58,066 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:58,090 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:58,090 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:58,091 INFO L146 ILogger]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:26:58,092 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:58,592 INFO L146 ILogger]: Checked inductivity of 126 backedges. 116 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:58,611 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:58,611 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2019-05-23 11:26:58,611 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:26:58,611 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:26:58,612 INFO L146 ILogger]: CoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:26:58,612 INFO L146 ILogger]: Start difference. First operand 221 states and 229 transitions. Second operand 35 states. [2019-05-23 11:26:59,405 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:59,405 INFO L146 ILogger]: Finished difference Result 433 states and 447 transitions. [2019-05-23 11:26:59,406 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:26:59,406 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 102 [2019-05-23 11:26:59,406 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:59,408 INFO L146 ILogger]: With dead ends: 433 [2019-05-23 11:26:59,408 INFO L146 ILogger]: Without dead ends: 263 [2019-05-23 11:26:59,409 INFO L146 ILogger]: 0 DeclaredPredicates, 138 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=521, Invalid=2235, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:26:59,410 INFO L146 ILogger]: Start minimizeSevpa. Operand 263 states. [2019-05-23 11:26:59,422 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 263 to 245. [2019-05-23 11:26:59,422 INFO L146 ILogger]: Start removeUnreachable. Operand 245 states. [2019-05-23 11:26:59,423 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 245 states to 245 states and 253 transitions. [2019-05-23 11:26:59,423 INFO L146 ILogger]: Start accepts. Automaton has 245 states and 253 transitions. Word has length 102 [2019-05-23 11:26:59,423 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:59,423 INFO L146 ILogger]: Abstraction has 245 states and 253 transitions. [2019-05-23 11:26:59,423 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:26:59,423 INFO L146 ILogger]: Start isEmpty. Operand 245 states and 253 transitions. [2019-05-23 11:26:59,424 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:26:59,424 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:59,424 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:59,425 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:59,425 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:59,425 INFO L146 ILogger]: Analyzing trace with hash 1840427179, now seen corresponding path program 5 times [2019-05-23 11:26:59,425 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:59,425 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:59,426 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:59,426 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:59,426 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:59,437 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:00,003 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-05-23 11:27:00,560 INFO L146 ILogger]: Checked inductivity of 143 backedges. 16 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:00,560 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:00,560 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:00,569 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:27:00,603 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:27:00,604 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:00,605 INFO L146 ILogger]: Trace formula consists of 161 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:27:00,607 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:00,900 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 11:27:00,900 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:00,911 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:00,911 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:00,912 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:25 [2019-05-23 11:27:00,971 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:00,972 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:27:00,972 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:00,982 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:00,982 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:00,982 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:31 [2019-05-23 11:27:01,448 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:01,448 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2019-05-23 11:27:01,449 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:01,451 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:01,451 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:01,452 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:7 [2019-05-23 11:27:01,534 INFO L146 ILogger]: Checked inductivity of 143 backedges. 16 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:01,552 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:01,552 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 45 [2019-05-23 11:27:01,553 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:27:01,553 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:27:01,554 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=1809, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:27:01,554 INFO L146 ILogger]: Start difference. First operand 245 states and 253 transitions. Second operand 45 states. [2019-05-23 11:27:04,987 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:04,987 INFO L146 ILogger]: Finished difference Result 332 states and 343 transitions. [2019-05-23 11:27:04,987 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:27:04,988 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 110 [2019-05-23 11:27:04,988 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:04,989 INFO L146 ILogger]: With dead ends: 332 [2019-05-23 11:27:04,989 INFO L146 ILogger]: Without dead ends: 310 [2019-05-23 11:27:04,990 INFO L146 ILogger]: 0 DeclaredPredicates, 166 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=699, Invalid=5307, Unknown=0, NotChecked=0, Total=6006 [2019-05-23 11:27:04,990 INFO L146 ILogger]: Start minimizeSevpa. Operand 310 states. [2019-05-23 11:27:05,003 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 310 to 259. [2019-05-23 11:27:05,004 INFO L146 ILogger]: Start removeUnreachable. Operand 259 states. [2019-05-23 11:27:05,004 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 259 states to 259 states and 267 transitions. [2019-05-23 11:27:05,004 INFO L146 ILogger]: Start accepts. Automaton has 259 states and 267 transitions. Word has length 110 [2019-05-23 11:27:05,005 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:05,005 INFO L146 ILogger]: Abstraction has 259 states and 267 transitions. [2019-05-23 11:27:05,005 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:27:05,005 INFO L146 ILogger]: Start isEmpty. Operand 259 states and 267 transitions. [2019-05-23 11:27:05,006 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:27:05,006 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:05,006 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1] [2019-05-23 11:27:05,006 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:05,007 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:05,007 INFO L146 ILogger]: Analyzing trace with hash -1686732024, now seen corresponding path program 6 times [2019-05-23 11:27:05,007 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:05,007 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:05,008 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:05,008 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:05,015 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:05,028 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:05,505 INFO L146 ILogger]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:05,505 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:05,505 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:27:05,516 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:27:05,558 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:27:05,558 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:05,560 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:27:05,562 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:05,682 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:27:05,682 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,690 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,690 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,690 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:27:05,800 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,803 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:27:05,804 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,816 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,816 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,816 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-05-23 11:27:05,853 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:05,853 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:27:05,854 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,864 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,865 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 11:27:05,865 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:31 [2019-05-23 11:27:06,499 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:06,500 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:06,500 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:27:06,501 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:06,505 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:06,505 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 11:27:06,505 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:7 [2019-05-23 11:27:06,609 INFO L146 ILogger]: Checked inductivity of 145 backedges. 60 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-05-23 11:27:06,628 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:06,628 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2019-05-23 11:27:06,629 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:27:06,629 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:27:06,629 INFO L146 ILogger]: CoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:27:06,630 INFO L146 ILogger]: Start difference. First operand 259 states and 267 transitions. Second operand 40 states. [2019-05-23 11:27:08,770 WARN L146 ILogger]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2019-05-23 11:27:09,151 WARN L146 ILogger]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-05-23 11:27:09,768 WARN L146 ILogger]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2019-05-23 11:27:10,309 WARN L146 ILogger]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2019-05-23 11:27:11,041 WARN L146 ILogger]: Spent 567.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2019-05-23 11:27:11,679 WARN L146 ILogger]: Spent 559.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2019-05-23 11:27:12,504 WARN L146 ILogger]: Spent 563.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2019-05-23 11:27:13,141 WARN L146 ILogger]: Spent 341.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2019-05-23 11:27:13,555 WARN L146 ILogger]: Spent 334.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2019-05-23 11:27:14,174 WARN L146 ILogger]: Spent 562.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34