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-crafted/mapsum1_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:28:28,380 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:28:28,382 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:28:28,394 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:28:28,394 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:28:28,395 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:28:28,397 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:28:28,399 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:28:28,400 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:28:28,401 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:28:28,402 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:28:28,403 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:28:28,404 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:28:28,405 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:28:28,406 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:28:28,407 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:28:28,407 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:28:28,409 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:28:28,411 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:28:28,413 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:28:28,414 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:28:28,415 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:28:28,417 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:28:28,418 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:28:28,418 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:28:28,419 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:28:28,419 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:28:28,420 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:28:28,421 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:28:28,422 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:28:28,422 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:28:28,424 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:28:28,425 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:28:28,425 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:28:28,425 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:28:28,426 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:28:28,426 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:28:28,427 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:28:28,427 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:28:28,428 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:28:28,443 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:28:28,443 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:28:28,444 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:28:28,444 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:28:28,444 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:28:28,445 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:28:28,445 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:28:28,445 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:28:28,445 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:28:28,446 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:28:28,446 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:28:28,446 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:28:28,446 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:28:28,446 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:28:28,446 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:28:28,447 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:28:28,447 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:28:28,447 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:28:28,447 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:28:28,448 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:28:28,448 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:28:28,448 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:28:28,448 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:28:28,448 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:28:28,449 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:28:28,449 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:28:28,449 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:28:28,449 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:28:28,449 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 11:28:28,481 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:28:28,501 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:28:28,506 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:28:28,508 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:28:28,508 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:28:28,509 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/mapsum1_true-unreach-call.i [2019-05-23 11:28:28,561 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dacb22bb/f209fa58b44d4e82936abb6c295b5810/FLAG0474f8428 [2019-05-23 11:28:28,989 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:28:28,990 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/mapsum1_true-unreach-call.i [2019-05-23 11:28:28,997 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dacb22bb/f209fa58b44d4e82936abb6c295b5810/FLAG0474f8428 [2019-05-23 11:28:29,381 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dacb22bb/f209fa58b44d4e82936abb6c295b5810 [2019-05-23 11:28:29,392 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:28:29,393 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:28:29,394 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:28:29,395 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:28:29,398 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:28:29,400 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:28:29" (1/1) ... [2019-05-23 11:28:29,403 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c862eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29, skipping insertion in model container [2019-05-23 11:28:29,403 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:28:29" (1/1) ... [2019-05-23 11:28:29,411 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:28:29,437 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:28:29,616 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:28:29,632 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:28:29,663 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:28:29,678 INFO L146 ILogger]: Completed translation [2019-05-23 11:28:29,678 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29 WrapperNode [2019-05-23 11:28:29,678 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:28:29,679 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:28:29,679 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:28:29,680 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:28:29,687 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29" (1/1) ... [2019-05-23 11:28:29,694 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29" (1/1) ... [2019-05-23 11:28:29,717 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:28:29,718 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:28:29,718 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:28:29,718 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:28:29,726 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29" (1/1) ... [2019-05-23 11:28:29,726 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29" (1/1) ... [2019-05-23 11:28:29,729 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29" (1/1) ... [2019-05-23 11:28:29,729 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29" (1/1) ... [2019-05-23 11:28:29,820 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29" (1/1) ... [2019-05-23 11:28:29,826 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29" (1/1) ... [2019-05-23 11:28:29,827 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29" (1/1) ... [2019-05-23 11:28:29,830 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:28:29,830 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:28:29,831 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:28:29,831 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:28:29,832 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29" (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 11:28:29,885 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:28:29,886 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:28:29,886 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:28:29,886 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:28:29,886 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:28:29,886 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:28:30,504 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:28:30,505 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:28:30,506 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:28:30 BoogieIcfgContainer [2019-05-23 11:28:30,506 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:28:30,507 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:28:30,507 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:28:30,510 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:28:30,511 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:28:29" (1/3) ... [2019-05-23 11:28:30,511 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1713cb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:28:30, skipping insertion in model container [2019-05-23 11:28:30,512 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:29" (2/3) ... [2019-05-23 11:28:30,512 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1713cb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:28:30, skipping insertion in model container [2019-05-23 11:28:30,512 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:28:30" (3/3) ... [2019-05-23 11:28:30,514 INFO L146 ILogger]: Analyzing ICFG mapsum1_true-unreach-call.i [2019-05-23 11:28:30,522 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:28:30,528 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:28:30,545 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:28:30,577 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:28:30,578 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:28:30,578 INFO L146 ILogger]: Hoare is true [2019-05-23 11:28:30,578 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:28:30,579 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:28:30,579 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:28:30,579 INFO L146 ILogger]: Difference is false [2019-05-23 11:28:30,579 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:28:30,579 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:28:30,598 INFO L146 ILogger]: Start isEmpty. Operand 105 states. [2019-05-23 11:28:30,607 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:28:30,607 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:30,608 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:30,610 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:30,615 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:30,616 INFO L146 ILogger]: Analyzing trace with hash -503519154, now seen corresponding path program 1 times [2019-05-23 11:28:30,617 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:30,618 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:30,660 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:30,660 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:30,660 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:30,704 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:30,827 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 11:28:30,830 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:28:30,830 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:28:30,835 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:28:30,849 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:28:30,850 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:28:30,854 INFO L146 ILogger]: Start difference. First operand 105 states. Second operand 3 states. [2019-05-23 11:28:30,957 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:30,957 INFO L146 ILogger]: Finished difference Result 199 states and 219 transitions. [2019-05-23 11:28:30,958 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:28:30,960 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 68 [2019-05-23 11:28:30,960 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:30,972 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:28:30,972 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:28:30,976 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 11:28:30,996 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:28:31,018 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 100. [2019-05-23 11:28:31,020 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:28:31,023 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2019-05-23 11:28:31,025 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 68 [2019-05-23 11:28:31,025 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:31,025 INFO L146 ILogger]: Abstraction has 100 states and 104 transitions. [2019-05-23 11:28:31,026 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:28:31,026 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 104 transitions. [2019-05-23 11:28:31,029 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 76 [2019-05-23 11:28:31,029 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:31,029 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:31,030 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:31,030 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:31,030 INFO L146 ILogger]: Analyzing trace with hash -1483383517, now seen corresponding path program 1 times [2019-05-23 11:28:31,031 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:31,031 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:31,032 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:31,032 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:31,033 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:31,063 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:31,381 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 11:28:31,381 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:31,381 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 11:28:31,402 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:31,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:31,481 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:28:31,490 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:31,549 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:28:31,578 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:28:31,578 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:28:31,579 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:28:31,580 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:28:31,580 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:28:31,580 INFO L146 ILogger]: Start difference. First operand 100 states and 104 transitions. Second operand 6 states. [2019-05-23 11:28:32,073 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:32,074 INFO L146 ILogger]: Finished difference Result 212 states and 223 transitions. [2019-05-23 11:28:32,074 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:28:32,074 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 75 [2019-05-23 11:28:32,075 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:32,076 INFO L146 ILogger]: With dead ends: 212 [2019-05-23 11:28:32,076 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:28:32,078 INFO L146 ILogger]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:28:32,078 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:28:32,087 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 110. [2019-05-23 11:28:32,087 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:28:32,088 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2019-05-23 11:28:32,089 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 75 [2019-05-23 11:28:32,089 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:32,089 INFO L146 ILogger]: Abstraction has 110 states and 114 transitions. [2019-05-23 11:28:32,089 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:28:32,089 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 114 transitions. [2019-05-23 11:28:32,092 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:28:32,092 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:32,093 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:32,093 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:32,093 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:32,093 INFO L146 ILogger]: Analyzing trace with hash -483601032, now seen corresponding path program 1 times [2019-05-23 11:28:32,094 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:32,094 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:32,095 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:32,095 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:32,095 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:32,131 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:32,249 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:28:32,249 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:32,250 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 11:28:32,261 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:32,325 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:32,327 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:28:32,333 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:32,389 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:28:32,410 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:28:32,410 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:28:32,411 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:28:32,412 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:28:32,412 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:28:32,412 INFO L146 ILogger]: Start difference. First operand 110 states and 114 transitions. Second operand 6 states. [2019-05-23 11:28:32,975 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:32,975 INFO L146 ILogger]: Finished difference Result 221 states and 231 transitions. [2019-05-23 11:28:32,976 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:28:32,976 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 103 [2019-05-23 11:28:32,976 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:32,978 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:28:32,979 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:28:32,980 INFO L146 ILogger]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:28:32,980 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:28:32,988 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 132. [2019-05-23 11:28:32,989 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:28:32,990 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2019-05-23 11:28:32,990 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 103 [2019-05-23 11:28:32,991 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:32,991 INFO L146 ILogger]: Abstraction has 132 states and 136 transitions. [2019-05-23 11:28:32,991 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:28:32,991 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 136 transitions. [2019-05-23 11:28:32,993 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:28:32,993 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:32,994 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:32,994 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:32,994 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:32,994 INFO L146 ILogger]: Analyzing trace with hash 46998236, now seen corresponding path program 1 times [2019-05-23 11:28:32,995 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:32,995 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:32,996 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:32,996 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:32,996 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:33,048 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:33,177 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:28:33,178 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:33,178 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 11:28:33,187 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:33,236 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:33,238 INFO L146 ILogger]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:28:33,244 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:33,438 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:28:33,458 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:33,458 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:28:33,458 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:28:33,459 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:28:33,459 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:28:33,459 INFO L146 ILogger]: Start difference. First operand 132 states and 136 transitions. Second operand 10 states. [2019-05-23 11:28:33,940 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:33,940 INFO L146 ILogger]: Finished difference Result 263 states and 272 transitions. [2019-05-23 11:28:33,941 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:28:33,941 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 131 [2019-05-23 11:28:33,942 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:33,943 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:28:33,943 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:28:33,944 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:28:33,948 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:28:33,959 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 146. [2019-05-23 11:28:33,959 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:28:33,966 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2019-05-23 11:28:33,966 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 131 [2019-05-23 11:28:33,967 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:33,967 INFO L146 ILogger]: Abstraction has 146 states and 150 transitions. [2019-05-23 11:28:33,967 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:28:33,967 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 150 transitions. [2019-05-23 11:28:33,974 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:28:33,975 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:33,975 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:33,975 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:33,976 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:33,977 INFO L146 ILogger]: Analyzing trace with hash -1200733213, now seen corresponding path program 2 times [2019-05-23 11:28:33,977 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:33,977 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:33,980 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:33,980 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:33,980 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:34,045 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:34,551 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:28:34,551 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:34,551 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 11:28:34,562 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:28:34,624 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:28:34,625 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:34,626 INFO L146 ILogger]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:28:34,637 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:34,780 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:28:34,799 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:34,799 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:28:34,800 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:28:34,800 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:28:34,800 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:28:34,801 INFO L146 ILogger]: Start difference. First operand 146 states and 150 transitions. Second operand 11 states. [2019-05-23 11:28:34,984 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:34,985 INFO L146 ILogger]: Finished difference Result 272 states and 280 transitions. [2019-05-23 11:28:34,987 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:28:34,987 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 145 [2019-05-23 11:28:34,987 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:34,988 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:28:34,988 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:28:34,990 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:28:34,990 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:28:34,997 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 153. [2019-05-23 11:28:34,997 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:28:34,998 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2019-05-23 11:28:34,998 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 145 [2019-05-23 11:28:34,999 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:34,999 INFO L146 ILogger]: Abstraction has 153 states and 157 transitions. [2019-05-23 11:28:34,999 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:28:34,999 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 157 transitions. [2019-05-23 11:28:35,001 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:28:35,002 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:35,002 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:35,002 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:35,002 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:35,003 INFO L146 ILogger]: Analyzing trace with hash 104748121, now seen corresponding path program 3 times [2019-05-23 11:28:35,003 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:35,003 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:35,004 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:35,004 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:35,004 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:35,027 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:35,303 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:28:35,303 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:35,303 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 11:28:35,313 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:28:35,362 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:28:35,362 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:35,363 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:28:35,367 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:35,458 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-05-23 11:28:35,479 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:35,479 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:28:35,480 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:28:35,480 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:28:35,480 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:28:35,481 INFO L146 ILogger]: Start difference. First operand 153 states and 157 transitions. Second operand 16 states. [2019-05-23 11:28:36,086 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:36,087 INFO L146 ILogger]: Finished difference Result 315 states and 326 transitions. [2019-05-23 11:28:36,087 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:28:36,087 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 152 [2019-05-23 11:28:36,088 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:36,090 INFO L146 ILogger]: With dead ends: 315 [2019-05-23 11:28:36,090 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:28:36,091 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:28:36,092 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:28:36,099 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 181. [2019-05-23 11:28:36,100 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:28:36,100 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2019-05-23 11:28:36,101 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 152 [2019-05-23 11:28:36,101 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:36,101 INFO L146 ILogger]: Abstraction has 181 states and 185 transitions. [2019-05-23 11:28:36,101 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:28:36,101 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 185 transitions. [2019-05-23 11:28:36,104 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:28:36,104 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:36,104 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:36,105 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:36,105 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:36,105 INFO L146 ILogger]: Analyzing trace with hash -9292050, now seen corresponding path program 4 times [2019-05-23 11:28:36,105 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:36,105 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:36,106 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:36,106 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:36,106 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:36,131 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:36,328 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:28:36,329 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:36,329 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 11:28:36,341 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:28:36,392 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:28:36,392 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:36,394 INFO L146 ILogger]: Trace formula consists of 292 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:28:36,399 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:36,510 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:28:36,528 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:36,528 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:28:36,528 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:28:36,529 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:28:36,529 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:28:36,529 INFO L146 ILogger]: Start difference. First operand 181 states and 185 transitions. Second operand 15 states. [2019-05-23 11:28:36,757 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:36,757 INFO L146 ILogger]: Finished difference Result 328 states and 336 transitions. [2019-05-23 11:28:36,764 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:28:36,764 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 180 [2019-05-23 11:28:36,764 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:36,765 INFO L146 ILogger]: With dead ends: 328 [2019-05-23 11:28:36,766 INFO L146 ILogger]: Without dead ends: 193 [2019-05-23 11:28:36,766 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:28:36,767 INFO L146 ILogger]: Start minimizeSevpa. Operand 193 states. [2019-05-23 11:28:36,774 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 193 to 188. [2019-05-23 11:28:36,775 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:28:36,776 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2019-05-23 11:28:36,776 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 180 [2019-05-23 11:28:36,776 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:36,776 INFO L146 ILogger]: Abstraction has 188 states and 192 transitions. [2019-05-23 11:28:36,776 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:28:36,777 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 192 transitions. [2019-05-23 11:28:36,780 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 188 [2019-05-23 11:28:36,780 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:36,782 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:36,783 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:36,783 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:36,783 INFO L146 ILogger]: Analyzing trace with hash -397663560, now seen corresponding path program 5 times [2019-05-23 11:28:36,783 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:36,783 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:36,785 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:36,786 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:36,786 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:36,823 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:37,304 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:28:37,304 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:37,304 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 11:28:37,314 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:28:37,401 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:28:37,402 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:37,403 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:28:37,405 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:37,630 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-05-23 11:28:37,649 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:37,650 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:28:37,650 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:28:37,650 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:28:37,651 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:28:37,651 INFO L146 ILogger]: Start difference. First operand 188 states and 192 transitions. Second operand 22 states. [2019-05-23 11:28:38,540 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:38,541 INFO L146 ILogger]: Finished difference Result 371 states and 382 transitions. [2019-05-23 11:28:38,541 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:28:38,541 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 187 [2019-05-23 11:28:38,542 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:38,543 INFO L146 ILogger]: With dead ends: 371 [2019-05-23 11:28:38,544 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:28:38,545 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:28:38,546 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:28:38,550 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 216. [2019-05-23 11:28:38,551 INFO L146 ILogger]: Start removeUnreachable. Operand 216 states. [2019-05-23 11:28:38,552 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2019-05-23 11:28:38,552 INFO L146 ILogger]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 187 [2019-05-23 11:28:38,552 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:38,552 INFO L146 ILogger]: Abstraction has 216 states and 220 transitions. [2019-05-23 11:28:38,552 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:28:38,553 INFO L146 ILogger]: Start isEmpty. Operand 216 states and 220 transitions. [2019-05-23 11:28:38,554 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:28:38,554 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:38,554 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:38,554 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:38,555 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:38,555 INFO L146 ILogger]: Analyzing trace with hash 1152254147, now seen corresponding path program 6 times [2019-05-23 11:28:38,555 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:38,555 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:38,556 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:38,556 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:38,556 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:38,591 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:38,803 INFO L146 ILogger]: Checked inductivity of 301 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-05-23 11:28:38,803 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:38,803 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 11:28:38,813 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:28:38,878 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:28:38,878 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:38,879 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:28:38,882 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:39,067 INFO L146 ILogger]: Checked inductivity of 301 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2019-05-23 11:28:39,086 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:39,086 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:28:39,087 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:28:39,087 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:28:39,088 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:28:39,088 INFO L146 ILogger]: Start difference. First operand 216 states and 220 transitions. Second operand 22 states. [2019-05-23 11:28:39,763 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:39,763 INFO L146 ILogger]: Finished difference Result 396 states and 405 transitions. [2019-05-23 11:28:39,764 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:28:39,764 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 215 [2019-05-23 11:28:39,764 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:39,765 INFO L146 ILogger]: With dead ends: 396 [2019-05-23 11:28:39,766 INFO L146 ILogger]: Without dead ends: 240 [2019-05-23 11:28:39,767 INFO L146 ILogger]: 0 DeclaredPredicates, 249 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:28:39,767 INFO L146 ILogger]: Start minimizeSevpa. Operand 240 states. [2019-05-23 11:28:39,772 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 240 to 230. [2019-05-23 11:28:39,772 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:28:39,773 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 234 transitions. [2019-05-23 11:28:39,773 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 234 transitions. Word has length 215 [2019-05-23 11:28:39,773 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:39,773 INFO L146 ILogger]: Abstraction has 230 states and 234 transitions. [2019-05-23 11:28:39,773 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:28:39,774 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 234 transitions. [2019-05-23 11:28:39,775 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 230 [2019-05-23 11:28:39,775 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:39,775 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:39,775 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:39,776 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:39,776 INFO L146 ILogger]: Analyzing trace with hash 1030812380, now seen corresponding path program 7 times [2019-05-23 11:28:39,776 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:39,776 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:39,777 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:39,777 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:39,777 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:39,801 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:40,147 INFO L146 ILogger]: Checked inductivity of 366 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:28:40,148 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:40,148 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 11:28:40,156 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:40,215 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:40,217 INFO L146 ILogger]: Trace formula consists of 365 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:28:40,220 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:40,284 INFO L146 ILogger]: Checked inductivity of 366 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:28:40,320 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:40,321 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:28:40,322 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:28:40,322 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:28:40,323 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:28:40,323 INFO L146 ILogger]: Start difference. First operand 230 states and 234 transitions. Second operand 21 states. [2019-05-23 11:28:40,878 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:40,878 INFO L146 ILogger]: Finished difference Result 405 states and 413 transitions. [2019-05-23 11:28:40,884 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:28:40,884 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 229 [2019-05-23 11:28:40,884 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:40,886 INFO L146 ILogger]: With dead ends: 405 [2019-05-23 11:28:40,886 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:28:40,887 INFO L146 ILogger]: 0 DeclaredPredicates, 263 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:28:40,887 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:28:40,891 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 237. [2019-05-23 11:28:40,891 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:28:40,892 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2019-05-23 11:28:40,892 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 229 [2019-05-23 11:28:40,893 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:40,893 INFO L146 ILogger]: Abstraction has 237 states and 241 transitions. [2019-05-23 11:28:40,893 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:28:40,893 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 241 transitions. [2019-05-23 11:28:40,894 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 237 [2019-05-23 11:28:40,894 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:40,895 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:40,895 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:40,895 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:40,895 INFO L146 ILogger]: Analyzing trace with hash -1860993966, now seen corresponding path program 8 times [2019-05-23 11:28:40,896 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:40,896 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:40,897 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:40,897 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:40,897 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:40,919 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:41,713 INFO L146 ILogger]: Checked inductivity of 423 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:28:41,713 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:41,713 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 11:28:41,721 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:28:41,778 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:28:41,779 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:41,780 INFO L146 ILogger]: Trace formula consists of 375 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:28:41,782 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:41,885 INFO L146 ILogger]: Checked inductivity of 423 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:28:41,915 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:41,915 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:28:41,916 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:28:41,916 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:28:41,916 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:28:41,916 INFO L146 ILogger]: Start difference. First operand 237 states and 241 transitions. Second operand 23 states. [2019-05-23 11:28:42,534 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:42,534 INFO L146 ILogger]: Finished difference Result 412 states and 420 transitions. [2019-05-23 11:28:42,539 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:28:42,539 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 236 [2019-05-23 11:28:42,539 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:42,541 INFO L146 ILogger]: With dead ends: 412 [2019-05-23 11:28:42,541 INFO L146 ILogger]: Without dead ends: 249 [2019-05-23 11:28:42,542 INFO L146 ILogger]: 0 DeclaredPredicates, 274 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:28:42,542 INFO L146 ILogger]: Start minimizeSevpa. Operand 249 states. [2019-05-23 11:28:42,546 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 249 to 244. [2019-05-23 11:28:42,546 INFO L146 ILogger]: Start removeUnreachable. Operand 244 states. [2019-05-23 11:28:42,547 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2019-05-23 11:28:42,547 INFO L146 ILogger]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 236 [2019-05-23 11:28:42,548 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:42,548 INFO L146 ILogger]: Abstraction has 244 states and 248 transitions. [2019-05-23 11:28:42,548 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:28:42,548 INFO L146 ILogger]: Start isEmpty. Operand 244 states and 248 transitions. [2019-05-23 11:28:42,549 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 244 [2019-05-23 11:28:42,549 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:42,550 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:42,550 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:42,550 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:42,550 INFO L146 ILogger]: Analyzing trace with hash -1509981668, now seen corresponding path program 9 times [2019-05-23 11:28:42,550 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:42,550 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:42,551 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:42,551 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:42,551 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:42,576 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:42,952 INFO L146 ILogger]: Checked inductivity of 487 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:28:42,953 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:42,953 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 11:28:42,961 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:28:43,035 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:28:43,035 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:43,037 INFO L146 ILogger]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:28:43,040 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:43,219 INFO L146 ILogger]: Checked inductivity of 487 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2019-05-23 11:28:43,239 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:43,240 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2019-05-23 11:28:43,240 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:28:43,240 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:28:43,241 INFO L146 ILogger]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:28:43,241 INFO L146 ILogger]: Start difference. First operand 244 states and 248 transitions. Second operand 30 states. [2019-05-23 11:28:44,772 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:44,772 INFO L146 ILogger]: Finished difference Result 431 states and 440 transitions. [2019-05-23 11:28:44,774 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:28:44,774 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 243 [2019-05-23 11:28:44,774 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:44,775 INFO L146 ILogger]: With dead ends: 431 [2019-05-23 11:28:44,775 INFO L146 ILogger]: Without dead ends: 268 [2019-05-23 11:28:44,778 INFO L146 ILogger]: 0 DeclaredPredicates, 291 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=680, Invalid=2400, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:28:44,778 INFO L146 ILogger]: Start minimizeSevpa. Operand 268 states. [2019-05-23 11:28:44,782 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 268 to 258. [2019-05-23 11:28:44,783 INFO L146 ILogger]: Start removeUnreachable. Operand 258 states. [2019-05-23 11:28:44,783 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 258 states to 258 states and 262 transitions. [2019-05-23 11:28:44,784 INFO L146 ILogger]: Start accepts. Automaton has 258 states and 262 transitions. Word has length 243 [2019-05-23 11:28:44,784 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:44,784 INFO L146 ILogger]: Abstraction has 258 states and 262 transitions. [2019-05-23 11:28:44,784 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:28:44,784 INFO L146 ILogger]: Start isEmpty. Operand 258 states and 262 transitions. [2019-05-23 11:28:44,785 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 258 [2019-05-23 11:28:44,786 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:44,786 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:44,786 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:44,786 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:44,787 INFO L146 ILogger]: Analyzing trace with hash -64980893, now seen corresponding path program 10 times [2019-05-23 11:28:44,787 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:44,787 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:44,788 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:44,788 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:44,788 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:44,811 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:45,818 INFO L146 ILogger]: Checked inductivity of 580 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:28:45,818 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:45,818 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 11:28:45,827 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:28:45,911 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:28:45,911 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:45,913 INFO L146 ILogger]: Trace formula consists of 405 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:28:45,919 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:46,014 INFO L146 ILogger]: Checked inductivity of 580 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:28:46,033 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:46,033 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:28:46,034 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:28:46,034 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:28:46,034 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:28:46,035 INFO L146 ILogger]: Start difference. First operand 258 states and 262 transitions. Second operand 27 states. [2019-05-23 11:28:46,769 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:46,769 INFO L146 ILogger]: Finished difference Result 440 states and 448 transitions. [2019-05-23 11:28:46,769 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:28:46,769 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 257 [2019-05-23 11:28:46,770 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:46,770 INFO L146 ILogger]: With dead ends: 440 [2019-05-23 11:28:46,771 INFO L146 ILogger]: Without dead ends: 270 [2019-05-23 11:28:46,772 INFO L146 ILogger]: 0 DeclaredPredicates, 303 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:28:46,772 INFO L146 ILogger]: Start minimizeSevpa. Operand 270 states. [2019-05-23 11:28:46,776 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 270 to 265. [2019-05-23 11:28:46,776 INFO L146 ILogger]: Start removeUnreachable. Operand 265 states. [2019-05-23 11:28:46,777 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 265 states to 265 states and 269 transitions. [2019-05-23 11:28:46,777 INFO L146 ILogger]: Start accepts. Automaton has 265 states and 269 transitions. Word has length 257 [2019-05-23 11:28:46,777 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:46,777 INFO L146 ILogger]: Abstraction has 265 states and 269 transitions. [2019-05-23 11:28:46,777 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:28:46,778 INFO L146 ILogger]: Start isEmpty. Operand 265 states and 269 transitions. [2019-05-23 11:28:46,779 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 265 [2019-05-23 11:28:46,779 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:46,779 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:46,779 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:46,780 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:46,780 INFO L146 ILogger]: Analyzing trace with hash 887018713, now seen corresponding path program 11 times [2019-05-23 11:28:46,780 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:46,780 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:46,781 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:46,781 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:46,781 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:46,805 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:47,154 INFO L146 ILogger]: Checked inductivity of 658 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:28:47,154 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:47,155 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 11:28:47,164 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:28:47,632 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:28:47,632 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:47,634 INFO L146 ILogger]: Trace formula consists of 415 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:28:47,638 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:47,858 INFO L146 ILogger]: Checked inductivity of 658 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2019-05-23 11:28:47,877 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:47,877 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2019-05-23 11:28:47,878 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:28:47,878 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:28:47,879 INFO L146 ILogger]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:28:47,879 INFO L146 ILogger]: Start difference. First operand 265 states and 269 transitions. Second operand 36 states. [2019-05-23 11:28:49,376 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:49,377 INFO L146 ILogger]: Finished difference Result 483 states and 494 transitions. [2019-05-23 11:28:49,377 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:28:49,377 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 264 [2019-05-23 11:28:49,378 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:49,380 INFO L146 ILogger]: With dead ends: 483 [2019-05-23 11:28:49,380 INFO L146 ILogger]: Without dead ends: 313 [2019-05-23 11:28:49,382 INFO L146 ILogger]: 0 DeclaredPredicates, 322 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:28:49,383 INFO L146 ILogger]: Start minimizeSevpa. Operand 313 states. [2019-05-23 11:28:49,388 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 313 to 293. [2019-05-23 11:28:49,388 INFO L146 ILogger]: Start removeUnreachable. Operand 293 states. [2019-05-23 11:28:49,389 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 293 states to 293 states and 297 transitions. [2019-05-23 11:28:49,389 INFO L146 ILogger]: Start accepts. Automaton has 293 states and 297 transitions. Word has length 264 [2019-05-23 11:28:49,389 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:49,389 INFO L146 ILogger]: Abstraction has 293 states and 297 transitions. [2019-05-23 11:28:49,389 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:28:49,390 INFO L146 ILogger]: Start isEmpty. Operand 293 states and 297 transitions. [2019-05-23 11:28:49,391 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 293 [2019-05-23 11:28:49,391 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:49,391 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:49,392 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:49,392 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:49,392 INFO L146 ILogger]: Analyzing trace with hash -499990866, now seen corresponding path program 12 times [2019-05-23 11:28:49,392 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:49,392 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:49,393 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:49,393 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:49,393 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:49,416 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:51,050 INFO L146 ILogger]: Checked inductivity of 830 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2019-05-23 11:28:51,050 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:51,050 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 11:28:51,060 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:28:51,343 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:28:51,343 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:51,346 INFO L146 ILogger]: Trace formula consists of 375 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:28:51,349 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:51,577 INFO L146 ILogger]: Checked inductivity of 830 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2019-05-23 11:28:51,597 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:51,597 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 11] total 38 [2019-05-23 11:28:51,598 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:28:51,598 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:28:51,599 INFO L146 ILogger]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:28:51,599 INFO L146 ILogger]: Start difference. First operand 293 states and 297 transitions. Second operand 38 states. [2019-05-23 11:28:52,837 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:52,837 INFO L146 ILogger]: Finished difference Result 508 states and 517 transitions. [2019-05-23 11:28:52,844 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:28:52,844 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 292 [2019-05-23 11:28:52,844 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:52,846 INFO L146 ILogger]: With dead ends: 508 [2019-05-23 11:28:52,846 INFO L146 ILogger]: Without dead ends: 317 [2019-05-23 11:28:52,848 INFO L146 ILogger]: 0 DeclaredPredicates, 354 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1100, Invalid=4012, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:28:52,849 INFO L146 ILogger]: Start minimizeSevpa. Operand 317 states. [2019-05-23 11:28:52,853 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 317 to 307. [2019-05-23 11:28:52,854 INFO L146 ILogger]: Start removeUnreachable. Operand 307 states. [2019-05-23 11:28:52,855 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 307 states to 307 states and 311 transitions. [2019-05-23 11:28:52,855 INFO L146 ILogger]: Start accepts. Automaton has 307 states and 311 transitions. Word has length 292 [2019-05-23 11:28:52,855 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:52,855 INFO L146 ILogger]: Abstraction has 307 states and 311 transitions. [2019-05-23 11:28:52,855 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:28:52,855 INFO L146 ILogger]: Start isEmpty. Operand 307 states and 311 transitions. [2019-05-23 11:28:52,857 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 307 [2019-05-23 11:28:52,857 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:52,857 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:52,858 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:52,858 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:52,858 INFO L146 ILogger]: Analyzing trace with hash 687477199, now seen corresponding path program 13 times [2019-05-23 11:28:52,858 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:52,858 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:52,859 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:52,859 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:52,859 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:52,884 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:54,155 INFO L146 ILogger]: Checked inductivity of 951 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:28:54,155 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:54,155 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 11:28:54,164 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:54,232 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:54,233 INFO L146 ILogger]: Trace formula consists of 478 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:28:54,237 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:54,886 INFO L146 ILogger]: Checked inductivity of 951 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:28:54,936 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:54,937 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:28:54,937 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:28:54,938 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:28:54,939 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:28:54,939 INFO L146 ILogger]: Start difference. First operand 307 states and 311 transitions. Second operand 33 states. [2019-05-23 11:28:55,752 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:55,752 INFO L146 ILogger]: Finished difference Result 517 states and 525 transitions. [2019-05-23 11:28:55,753 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:28:55,753 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 306 [2019-05-23 11:28:55,753 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:55,755 INFO L146 ILogger]: With dead ends: 517 [2019-05-23 11:28:55,755 INFO L146 ILogger]: Without dead ends: 319 [2019-05-23 11:28:55,757 INFO L146 ILogger]: 0 DeclaredPredicates, 364 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:28:55,758 INFO L146 ILogger]: Start minimizeSevpa. Operand 319 states. [2019-05-23 11:28:55,762 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 319 to 314. [2019-05-23 11:28:55,762 INFO L146 ILogger]: Start removeUnreachable. Operand 314 states. [2019-05-23 11:28:55,763 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 314 states to 314 states and 318 transitions. [2019-05-23 11:28:55,763 INFO L146 ILogger]: Start accepts. Automaton has 314 states and 318 transitions. Word has length 306 [2019-05-23 11:28:55,764 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:55,764 INFO L146 ILogger]: Abstraction has 314 states and 318 transitions. [2019-05-23 11:28:55,764 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:28:55,764 INFO L146 ILogger]: Start isEmpty. Operand 314 states and 318 transitions. [2019-05-23 11:28:55,765 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 314 [2019-05-23 11:28:55,765 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:55,765 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:55,766 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:55,766 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:55,766 INFO L146 ILogger]: Analyzing trace with hash -1746810855, now seen corresponding path program 14 times [2019-05-23 11:28:55,766 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:55,766 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:55,767 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:55,767 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:55,767 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:55,791 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:56,337 INFO L146 ILogger]: Checked inductivity of 1050 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:28:56,338 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:56,338 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 11:28:56,347 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:28:56,435 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:28:56,435 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:56,437 INFO L146 ILogger]: Trace formula consists of 488 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:28:56,440 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:56,611 INFO L146 ILogger]: Checked inductivity of 1050 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:28:56,630 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:56,631 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:28:56,631 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:28:56,631 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:28:56,632 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:28:56,632 INFO L146 ILogger]: Start difference. First operand 314 states and 318 transitions. Second operand 35 states. [2019-05-23 11:28:57,344 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:57,344 INFO L146 ILogger]: Finished difference Result 524 states and 532 transitions. [2019-05-23 11:28:57,345 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:28:57,345 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 313 [2019-05-23 11:28:57,345 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:57,346 INFO L146 ILogger]: With dead ends: 524 [2019-05-23 11:28:57,346 INFO L146 ILogger]: Without dead ends: 326 [2019-05-23 11:28:57,349 INFO L146 ILogger]: 0 DeclaredPredicates, 375 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:28:57,350 INFO L146 ILogger]: Start minimizeSevpa. Operand 326 states. [2019-05-23 11:28:57,354 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 326 to 321. [2019-05-23 11:28:57,354 INFO L146 ILogger]: Start removeUnreachable. Operand 321 states. [2019-05-23 11:28:57,355 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 321 states to 321 states and 325 transitions. [2019-05-23 11:28:57,355 INFO L146 ILogger]: Start accepts. Automaton has 321 states and 325 transitions. Word has length 313 [2019-05-23 11:28:57,355 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:57,355 INFO L146 ILogger]: Abstraction has 321 states and 325 transitions. [2019-05-23 11:28:57,355 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:28:57,355 INFO L146 ILogger]: Start isEmpty. Operand 321 states and 325 transitions. [2019-05-23 11:28:57,357 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 321 [2019-05-23 11:28:57,357 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:57,357 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:57,358 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:57,358 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:57,358 INFO L146 ILogger]: Analyzing trace with hash 68700815, now seen corresponding path program 15 times [2019-05-23 11:28:57,358 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:57,358 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:57,359 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:57,359 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:57,359 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:57,385 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:58,741 INFO L146 ILogger]: Checked inductivity of 1156 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:28:58,742 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:58,742 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:28:58,750 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:28:58,919 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:28:58,920 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:58,921 INFO L146 ILogger]: Trace formula consists of 388 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:28:58,925 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:59,275 INFO L146 ILogger]: Checked inductivity of 1156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2019-05-23 11:28:59,295 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:59,295 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 46 [2019-05-23 11:28:59,296 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:28:59,296 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:28:59,297 INFO L146 ILogger]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:28:59,297 INFO L146 ILogger]: Start difference. First operand 321 states and 325 transitions. Second operand 46 states. [2019-05-23 11:29:00,747 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:00,748 INFO L146 ILogger]: Finished difference Result 567 states and 578 transitions. [2019-05-23 11:29:00,753 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:29:00,753 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 320 [2019-05-23 11:29:00,753 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:00,755 INFO L146 ILogger]: With dead ends: 567 [2019-05-23 11:29:00,755 INFO L146 ILogger]: Without dead ends: 369 [2019-05-23 11:29:00,757 INFO L146 ILogger]: 0 DeclaredPredicates, 396 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1620, Invalid=6036, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:29:00,758 INFO L146 ILogger]: Start minimizeSevpa. Operand 369 states. [2019-05-23 11:29:00,761 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 369 to 349. [2019-05-23 11:29:00,762 INFO L146 ILogger]: Start removeUnreachable. Operand 349 states. [2019-05-23 11:29:00,762 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2019-05-23 11:29:00,762 INFO L146 ILogger]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 320 [2019-05-23 11:29:00,763 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:00,763 INFO L146 ILogger]: Abstraction has 349 states and 353 transitions. [2019-05-23 11:29:00,763 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:29:00,763 INFO L146 ILogger]: Start isEmpty. Operand 349 states and 353 transitions. [2019-05-23 11:29:00,765 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 349 [2019-05-23 11:29:00,765 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:00,765 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:00,766 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:00,766 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:00,766 INFO L146 ILogger]: Analyzing trace with hash 31541138, now seen corresponding path program 16 times [2019-05-23 11:29:00,766 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:00,766 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:00,767 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:00,767 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:00,767 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:00,794 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:01,397 INFO L146 ILogger]: Checked inductivity of 1377 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:01,397 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:01,397 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:01,407 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:01,687 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:01,687 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:01,690 INFO L146 ILogger]: Trace formula consists of 541 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:29:01,694 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:01,810 INFO L146 ILogger]: Checked inductivity of 1377 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:01,830 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:01,830 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:29:01,830 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:29:01,831 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:29:01,831 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:29:01,832 INFO L146 ILogger]: Start difference. First operand 349 states and 353 transitions. Second operand 39 states. [2019-05-23 11:29:02,968 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:02,968 INFO L146 ILogger]: Finished difference Result 580 states and 588 transitions. [2019-05-23 11:29:02,968 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:29:02,969 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 348 [2019-05-23 11:29:02,969 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:02,970 INFO L146 ILogger]: With dead ends: 580 [2019-05-23 11:29:02,970 INFO L146 ILogger]: Without dead ends: 361 [2019-05-23 11:29:02,972 INFO L146 ILogger]: 0 DeclaredPredicates, 418 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:29:02,973 INFO L146 ILogger]: Start minimizeSevpa. Operand 361 states. [2019-05-23 11:29:02,978 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 361 to 356. [2019-05-23 11:29:02,978 INFO L146 ILogger]: Start removeUnreachable. Operand 356 states. [2019-05-23 11:29:02,979 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 356 states to 356 states and 360 transitions. [2019-05-23 11:29:02,979 INFO L146 ILogger]: Start accepts. Automaton has 356 states and 360 transitions. Word has length 348 [2019-05-23 11:29:02,979 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:02,979 INFO L146 ILogger]: Abstraction has 356 states and 360 transitions. [2019-05-23 11:29:02,979 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:29:02,979 INFO L146 ILogger]: Start isEmpty. Operand 356 states and 360 transitions. [2019-05-23 11:29:02,981 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 356 [2019-05-23 11:29:02,981 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:02,982 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:02,982 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:02,982 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:02,982 INFO L146 ILogger]: Analyzing trace with hash -1448115876, now seen corresponding path program 17 times [2019-05-23 11:29:02,982 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:02,982 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:02,983 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:02,983 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:02,983 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:03,009 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:03,622 INFO L146 ILogger]: Checked inductivity of 1497 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:03,623 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:03,623 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:03,634 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:04,221 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:29:04,221 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:04,224 INFO L146 ILogger]: Trace formula consists of 551 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:29:04,229 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:04,342 INFO L146 ILogger]: Checked inductivity of 1497 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:04,363 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:04,363 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:29:04,364 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:29:04,364 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:29:04,365 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:29:04,365 INFO L146 ILogger]: Start difference. First operand 356 states and 360 transitions. Second operand 41 states. [2019-05-23 11:29:05,223 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:05,223 INFO L146 ILogger]: Finished difference Result 587 states and 595 transitions. [2019-05-23 11:29:05,223 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:29:05,223 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 355 [2019-05-23 11:29:05,223 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:05,225 INFO L146 ILogger]: With dead ends: 587 [2019-05-23 11:29:05,225 INFO L146 ILogger]: Without dead ends: 368 [2019-05-23 11:29:05,227 INFO L146 ILogger]: 0 DeclaredPredicates, 429 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:29:05,228 INFO L146 ILogger]: Start minimizeSevpa. Operand 368 states. [2019-05-23 11:29:05,232 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 368 to 363. [2019-05-23 11:29:05,232 INFO L146 ILogger]: Start removeUnreachable. Operand 363 states. [2019-05-23 11:29:05,233 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 363 states to 363 states and 367 transitions. [2019-05-23 11:29:05,233 INFO L146 ILogger]: Start accepts. Automaton has 363 states and 367 transitions. Word has length 355 [2019-05-23 11:29:05,234 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:05,234 INFO L146 ILogger]: Abstraction has 363 states and 367 transitions. [2019-05-23 11:29:05,234 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:29:05,234 INFO L146 ILogger]: Start isEmpty. Operand 363 states and 367 transitions. [2019-05-23 11:29:05,236 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 363 [2019-05-23 11:29:05,236 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:05,236 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:05,237 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:05,237 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:05,237 INFO L146 ILogger]: Analyzing trace with hash 1489801298, now seen corresponding path program 18 times [2019-05-23 11:29:05,237 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:05,237 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:05,238 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:05,238 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:05,238 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:05,265 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:06,788 INFO L146 ILogger]: Checked inductivity of 1624 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:06,788 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:06,789 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:06,797 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:07,519 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:29:07,519 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:07,523 INFO L146 ILogger]: Trace formula consists of 438 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:07,526 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:08,241 INFO L146 ILogger]: Checked inductivity of 1624 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2019-05-23 11:29:08,263 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:08,263 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 13] total 52 [2019-05-23 11:29:08,263 INFO L146 ILogger]: Interpolant automaton has 52 states [2019-05-23 11:29:08,264 INFO L146 ILogger]: Constructing interpolant automaton starting with 52 interpolants. [2019-05-23 11:29:08,264 INFO L146 ILogger]: CoverageRelationStatistics Valid=487, Invalid=2165, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:29:08,264 INFO L146 ILogger]: Start difference. First operand 363 states and 367 transitions. Second operand 52 states. [2019-05-23 11:29:09,823 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:09,823 INFO L146 ILogger]: Finished difference Result 606 states and 615 transitions. [2019-05-23 11:29:09,823 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-05-23 11:29:09,823 INFO L146 ILogger]: Start accepts. Automaton has 52 states. Word has length 362 [2019-05-23 11:29:09,824 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:09,825 INFO L146 ILogger]: With dead ends: 606 [2019-05-23 11:29:09,825 INFO L146 ILogger]: Without dead ends: 387 [2019-05-23 11:29:09,826 INFO L146 ILogger]: 0 DeclaredPredicates, 450 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2175, Invalid=7725, Unknown=0, NotChecked=0, Total=9900 [2019-05-23 11:29:09,827 INFO L146 ILogger]: Start minimizeSevpa. Operand 387 states. [2019-05-23 11:29:09,830 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 387 to 377. [2019-05-23 11:29:09,830 INFO L146 ILogger]: Start removeUnreachable. Operand 377 states. [2019-05-23 11:29:09,831 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 377 states to 377 states and 381 transitions. [2019-05-23 11:29:09,831 INFO L146 ILogger]: Start accepts. Automaton has 377 states and 381 transitions. Word has length 362 [2019-05-23 11:29:09,831 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:09,831 INFO L146 ILogger]: Abstraction has 377 states and 381 transitions. [2019-05-23 11:29:09,831 INFO L146 ILogger]: Interpolant automaton has 52 states. [2019-05-23 11:29:09,832 INFO L146 ILogger]: Start isEmpty. Operand 377 states and 381 transitions. [2019-05-23 11:29:09,833 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 377 [2019-05-23 11:29:09,833 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:09,833 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:09,833 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:09,834 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:09,834 INFO L146 ILogger]: Analyzing trace with hash -693820071, now seen corresponding path program 19 times [2019-05-23 11:29:09,834 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:09,834 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:09,835 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:09,835 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:09,835 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:09,863 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:10,639 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:10,639 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:10,639 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:10,648 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:10,734 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:10,736 INFO L146 ILogger]: Trace formula consists of 581 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:29:10,740 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:10,964 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:10,982 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:10,983 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-05-23 11:29:10,983 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:29:10,983 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:29:10,984 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:29:10,984 INFO L146 ILogger]: Start difference. First operand 377 states and 381 transitions. Second operand 45 states. [2019-05-23 11:29:12,597 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:12,597 INFO L146 ILogger]: Finished difference Result 615 states and 623 transitions. [2019-05-23 11:29:12,599 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:29:12,599 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 376 [2019-05-23 11:29:12,599 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:12,601 INFO L146 ILogger]: With dead ends: 615 [2019-05-23 11:29:12,601 INFO L146 ILogger]: Without dead ends: 389 [2019-05-23 11:29:12,602 INFO L146 ILogger]: 0 DeclaredPredicates, 458 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:29:12,602 INFO L146 ILogger]: Start minimizeSevpa. Operand 389 states. [2019-05-23 11:29:12,607 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 389 to 384. [2019-05-23 11:29:12,607 INFO L146 ILogger]: Start removeUnreachable. Operand 384 states. [2019-05-23 11:29:12,608 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 384 states to 384 states and 388 transitions. [2019-05-23 11:29:12,608 INFO L146 ILogger]: Start accepts. Automaton has 384 states and 388 transitions. Word has length 376 [2019-05-23 11:29:12,609 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:12,609 INFO L146 ILogger]: Abstraction has 384 states and 388 transitions. [2019-05-23 11:29:12,609 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:29:12,609 INFO L146 ILogger]: Start isEmpty. Operand 384 states and 388 transitions. [2019-05-23 11:29:12,611 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 384 [2019-05-23 11:29:12,611 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:12,611 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:12,612 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:12,612 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:12,612 INFO L146 ILogger]: Analyzing trace with hash 1079913507, now seen corresponding path program 20 times [2019-05-23 11:29:12,612 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:12,612 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:12,613 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:12,613 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:12,613 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:12,641 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:13,726 INFO L146 ILogger]: Checked inductivity of 1935 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:13,727 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:13,727 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:13,735 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:13,823 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:13,823 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:13,825 INFO L146 ILogger]: Trace formula consists of 591 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:29:13,830 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:14,068 INFO L146 ILogger]: Checked inductivity of 1935 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:14,096 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:14,096 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-05-23 11:29:14,097 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:29:14,098 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:29:14,098 INFO L146 ILogger]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:29:14,098 INFO L146 ILogger]: Start difference. First operand 384 states and 388 transitions. Second operand 47 states. [2019-05-23 11:29:15,213 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:15,214 INFO L146 ILogger]: Finished difference Result 622 states and 630 transitions. [2019-05-23 11:29:15,214 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:29:15,214 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 383 [2019-05-23 11:29:15,214 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:15,216 INFO L146 ILogger]: With dead ends: 622 [2019-05-23 11:29:15,216 INFO L146 ILogger]: Without dead ends: 396 [2019-05-23 11:29:15,217 INFO L146 ILogger]: 0 DeclaredPredicates, 469 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:29:15,217 INFO L146 ILogger]: Start minimizeSevpa. Operand 396 states. [2019-05-23 11:29:15,222 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 396 to 391. [2019-05-23 11:29:15,222 INFO L146 ILogger]: Start removeUnreachable. Operand 391 states. [2019-05-23 11:29:15,222 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 391 states to 391 states and 395 transitions. [2019-05-23 11:29:15,223 INFO L146 ILogger]: Start accepts. Automaton has 391 states and 395 transitions. Word has length 383 [2019-05-23 11:29:15,223 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:15,223 INFO L146 ILogger]: Abstraction has 391 states and 395 transitions. [2019-05-23 11:29:15,223 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:29:15,223 INFO L146 ILogger]: Start isEmpty. Operand 391 states and 395 transitions. [2019-05-23 11:29:15,225 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 391 [2019-05-23 11:29:15,225 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:15,226 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:15,226 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:15,226 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:15,226 INFO L146 ILogger]: Analyzing trace with hash 1665125913, now seen corresponding path program 21 times [2019-05-23 11:29:15,227 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:15,227 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:15,227 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:15,227 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:15,228 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:15,258 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:16,370 INFO L146 ILogger]: Checked inductivity of 2083 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:16,371 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:16,371 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:16,382 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:16,644 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:29:16,644 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:16,647 INFO L146 ILogger]: Trace formula consists of 441 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:29:16,651 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:17,430 INFO L146 ILogger]: Checked inductivity of 2083 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1972 trivial. 0 not checked. [2019-05-23 11:29:17,451 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:17,451 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 15] total 60 [2019-05-23 11:29:17,452 INFO L146 ILogger]: Interpolant automaton has 60 states [2019-05-23 11:29:17,452 INFO L146 ILogger]: Constructing interpolant automaton starting with 60 interpolants. [2019-05-23 11:29:17,452 INFO L146 ILogger]: CoverageRelationStatistics Valid=637, Invalid=2903, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:29:17,453 INFO L146 ILogger]: Start difference. First operand 391 states and 395 transitions. Second operand 60 states. [2019-05-23 11:29:20,276 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:20,277 INFO L146 ILogger]: Finished difference Result 665 states and 676 transitions. [2019-05-23 11:29:20,277 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2019-05-23 11:29:20,277 INFO L146 ILogger]: Start accepts. Automaton has 60 states. Word has length 390 [2019-05-23 11:29:20,278 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:20,280 INFO L146 ILogger]: With dead ends: 665 [2019-05-23 11:29:20,280 INFO L146 ILogger]: Without dead ends: 439 [2019-05-23 11:29:20,282 INFO L146 ILogger]: 0 DeclaredPredicates, 504 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2591 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2885, Invalid=10455, Unknown=0, NotChecked=0, Total=13340 [2019-05-23 11:29:20,283 INFO L146 ILogger]: Start minimizeSevpa. Operand 439 states. [2019-05-23 11:29:20,287 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 439 to 419. [2019-05-23 11:29:20,287 INFO L146 ILogger]: Start removeUnreachable. Operand 419 states. [2019-05-23 11:29:20,288 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 419 states to 419 states and 423 transitions. [2019-05-23 11:29:20,288 INFO L146 ILogger]: Start accepts. Automaton has 419 states and 423 transitions. Word has length 390 [2019-05-23 11:29:20,288 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:20,288 INFO L146 ILogger]: Abstraction has 419 states and 423 transitions. [2019-05-23 11:29:20,289 INFO L146 ILogger]: Interpolant automaton has 60 states. [2019-05-23 11:29:20,289 INFO L146 ILogger]: Start isEmpty. Operand 419 states and 423 transitions. [2019-05-23 11:29:20,291 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 419 [2019-05-23 11:29:20,291 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:20,291 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:20,291 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:20,292 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:20,292 INFO L146 ILogger]: Analyzing trace with hash -656265426, now seen corresponding path program 22 times [2019-05-23 11:29:20,292 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:20,292 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:20,293 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:20,293 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:20,293 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:20,324 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:21,511 INFO L146 ILogger]: Checked inductivity of 2367 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:21,511 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:21,511 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:21,520 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:21,986 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:21,986 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:21,989 INFO L146 ILogger]: Trace formula consists of 644 conjuncts, 48 conjunts are in the unsatisfiable core [2019-05-23 11:29:21,992 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:22,103 INFO L146 ILogger]: Checked inductivity of 2367 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:22,122 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:22,123 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2019-05-23 11:29:22,123 INFO L146 ILogger]: Interpolant automaton has 51 states [2019-05-23 11:29:22,124 INFO L146 ILogger]: Constructing interpolant automaton starting with 51 interpolants. [2019-05-23 11:29:22,124 INFO L146 ILogger]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:29:22,124 INFO L146 ILogger]: Start difference. First operand 419 states and 423 transitions. Second operand 51 states. [2019-05-23 11:29:23,538 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:23,538 INFO L146 ILogger]: Finished difference Result 678 states and 686 transitions. [2019-05-23 11:29:23,538 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-05-23 11:29:23,538 INFO L146 ILogger]: Start accepts. Automaton has 51 states. Word has length 418 [2019-05-23 11:29:23,539 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:23,540 INFO L146 ILogger]: With dead ends: 678 [2019-05-23 11:29:23,540 INFO L146 ILogger]: Without dead ends: 431 [2019-05-23 11:29:23,542 INFO L146 ILogger]: 0 DeclaredPredicates, 512 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:29:23,542 INFO L146 ILogger]: Start minimizeSevpa. Operand 431 states. [2019-05-23 11:29:23,547 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 431 to 426. [2019-05-23 11:29:23,547 INFO L146 ILogger]: Start removeUnreachable. Operand 426 states. [2019-05-23 11:29:23,548 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 426 states to 426 states and 430 transitions. [2019-05-23 11:29:23,548 INFO L146 ILogger]: Start accepts. Automaton has 426 states and 430 transitions. Word has length 418 [2019-05-23 11:29:23,549 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:23,549 INFO L146 ILogger]: Abstraction has 426 states and 430 transitions. [2019-05-23 11:29:23,549 INFO L146 ILogger]: Interpolant automaton has 51 states. [2019-05-23 11:29:23,549 INFO L146 ILogger]: Start isEmpty. Operand 426 states and 430 transitions. [2019-05-23 11:29:23,551 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 426 [2019-05-23 11:29:23,551 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:23,552 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:23,552 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:23,552 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:23,552 INFO L146 ILogger]: Analyzing trace with hash 2039814520, now seen corresponding path program 23 times [2019-05-23 11:29:23,552 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:23,553 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:23,553 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:23,553 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:23,554 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:23,586 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:24,503 INFO L146 ILogger]: Checked inductivity of 2529 backedges. 0 proven. 1956 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:24,503 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:24,503 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:24,514 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:28,605 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2019-05-23 11:29:28,605 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:28,613 INFO L146 ILogger]: Trace formula consists of 654 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:29:28,616 INFO L146 ILogger]: Computing forward predicates...