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-examples/sorting_bubblesort_false-unreach-call2_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:14:16,253 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:14:16,255 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:14:16,271 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:14:16,271 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:14:16,272 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:14:16,276 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:14:16,279 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:14:16,282 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:14:16,291 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:14:16,292 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:14:16,293 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:14:16,295 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:14:16,297 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:14:16,298 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:14:16,301 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:14:16,302 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:14:16,307 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:14:16,313 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:14:16,316 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:14:16,319 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:14:16,321 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:14:16,324 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:14:16,324 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:14:16,324 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:14:16,326 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:14:16,326 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:14:16,327 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:14:16,327 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:14:16,329 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:14:16,332 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:14:16,333 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:14:16,334 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:14:16,335 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:14:16,335 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:14:16,336 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:14:16,336 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:14:16,338 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:14:16,339 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:14:16,339 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:14:16,368 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:14:16,368 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:14:16,371 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:14:16,371 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:14:16,371 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:14:16,372 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:14:16,372 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:14:16,372 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:14:16,372 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:14:16,372 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:14:16,373 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:14:16,373 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:14:16,373 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:14:16,373 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:14:16,375 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:14:16,375 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:14:16,375 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:14:16,376 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:14:16,376 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:14:16,376 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:14:16,377 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:14:16,377 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:14:16,377 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:14:16,378 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:14:16,378 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:14:16,378 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:14:16,378 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:14:16,379 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:14:16,379 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 11:14:16,432 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:14:16,449 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:14:16,454 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:14:16,456 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:14:16,457 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:14:16,457 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/sorting_bubblesort_false-unreach-call2_ground.i [2019-05-23 11:14:16,524 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91309839/7da872a7a4ae4173a9288a54bb4c93d5/FLAG0791c130f [2019-05-23 11:14:16,975 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:14:16,975 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/sorting_bubblesort_false-unreach-call2_ground.i [2019-05-23 11:14:16,980 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91309839/7da872a7a4ae4173a9288a54bb4c93d5/FLAG0791c130f [2019-05-23 11:14:17,349 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91309839/7da872a7a4ae4173a9288a54bb4c93d5 [2019-05-23 11:14:17,359 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:14:17,361 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:14:17,362 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,362 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:14:17,366 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:14:17,367 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,370 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6235019d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17, skipping insertion in model container [2019-05-23 11:14:17,370 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,377 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:14:17,394 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:14:17,589 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,595 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:14:17,628 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,655 INFO L146 ILogger]: Completed translation [2019-05-23 11:14:17,656 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17 WrapperNode [2019-05-23 11:14:17,656 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,658 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,658 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:14:17,658 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:14:17,669 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,686 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,718 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,719 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:14:17,719 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:14:17,719 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:14:17,731 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,732 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,734 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,734 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,744 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,852 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,858 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,860 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:14:17,863 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:14:17,863 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:14:17,863 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:14:17,864 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (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 11:14:17,925 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:14:17,925 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:14:17,926 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:14:17,926 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:14:17,926 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:14:17,926 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:14:18,416 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:14:18,417 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:14:18,418 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:18 BoogieIcfgContainer [2019-05-23 11:14:18,418 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:14:18,419 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:14:18,419 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:14:18,422 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:14:18,422 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:14:17" (1/3) ... [2019-05-23 11:14:18,423 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c15155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:18, skipping insertion in model container [2019-05-23 11:14:18,423 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (2/3) ... [2019-05-23 11:14:18,424 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c15155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:18, skipping insertion in model container [2019-05-23 11:14:18,424 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:18" (3/3) ... [2019-05-23 11:14:18,426 INFO L146 ILogger]: Analyzing ICFG sorting_bubblesort_false-unreach-call2_ground.i [2019-05-23 11:14:18,435 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:14:18,443 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:14:18,460 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:14:18,488 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:14:18,489 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:14:18,489 INFO L146 ILogger]: Hoare is true [2019-05-23 11:14:18,489 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:14:18,490 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:14:18,490 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:14:18,490 INFO L146 ILogger]: Difference is false [2019-05-23 11:14:18,490 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:14:18,491 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:14:18,506 INFO L146 ILogger]: Start isEmpty. Operand 54 states. [2019-05-23 11:14:18,512 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:14:18,513 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,514 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] [2019-05-23 11:14:18,515 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,520 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,520 INFO L146 ILogger]: Analyzing trace with hash 2102280557, now seen corresponding path program 1 times [2019-05-23 11:14:18,522 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,522 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:18,564 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,564 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,564 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,598 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:18,636 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 11:14:18,639 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:18,640 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:14:18,644 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:14:18,657 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:14:18,658 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:14:18,660 INFO L146 ILogger]: Start difference. First operand 54 states. Second operand 2 states. [2019-05-23 11:14:18,677 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:18,678 INFO L146 ILogger]: Finished difference Result 102 states and 120 transitions. [2019-05-23 11:14:18,678 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:14:18,679 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 20 [2019-05-23 11:14:18,680 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:18,689 INFO L146 ILogger]: With dead ends: 102 [2019-05-23 11:14:18,690 INFO L146 ILogger]: Without dead ends: 48 [2019-05-23 11:14:18,693 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:14:18,707 INFO L146 ILogger]: Start minimizeSevpa. Operand 48 states. [2019-05-23 11:14:18,723 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-05-23 11:14:18,724 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:14:18,725 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2019-05-23 11:14:18,727 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 20 [2019-05-23 11:14:18,727 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:18,727 INFO L146 ILogger]: Abstraction has 48 states and 52 transitions. [2019-05-23 11:14:18,727 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:14:18,728 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 52 transitions. [2019-05-23 11:14:18,729 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:14:18,729 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,729 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] [2019-05-23 11:14:18,729 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,730 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,730 INFO L146 ILogger]: Analyzing trace with hash 344230452, now seen corresponding path program 1 times [2019-05-23 11:14:18,730 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,730 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:18,731 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,732 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,732 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,745 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:18,817 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 11:14:18,821 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:18,821 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:14:18,823 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:14:18,823 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:14:18,824 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:14:18,824 INFO L146 ILogger]: Start difference. First operand 48 states and 52 transitions. Second operand 3 states. [2019-05-23 11:14:18,860 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:18,861 INFO L146 ILogger]: Finished difference Result 89 states and 97 transitions. [2019-05-23 11:14:18,861 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:14:18,862 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 20 [2019-05-23 11:14:18,862 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:18,863 INFO L146 ILogger]: With dead ends: 89 [2019-05-23 11:14:18,864 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:14:18,865 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 11:14:18,866 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:14:18,872 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 56. [2019-05-23 11:14:18,872 INFO L146 ILogger]: Start removeUnreachable. Operand 56 states. [2019-05-23 11:14:18,874 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2019-05-23 11:14:18,874 INFO L146 ILogger]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 20 [2019-05-23 11:14:18,874 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:18,874 INFO L146 ILogger]: Abstraction has 56 states and 62 transitions. [2019-05-23 11:14:18,874 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:14:18,875 INFO L146 ILogger]: Start isEmpty. Operand 56 states and 62 transitions. [2019-05-23 11:14:18,876 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:14:18,876 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:18,876 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:18,876 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:18,877 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:18,877 INFO L146 ILogger]: Analyzing trace with hash 164657660, now seen corresponding path program 1 times [2019-05-23 11:14:18,877 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:18,877 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:18,878 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,878 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:18,879 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:18,887 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:18,947 INFO L146 ILogger]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:18,948 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:18,948 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:14:18,948 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:14:18,949 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:14:18,949 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:14:18,949 INFO L146 ILogger]: Start difference. First operand 56 states and 62 transitions. Second operand 3 states. [2019-05-23 11:14:19,074 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,074 INFO L146 ILogger]: Finished difference Result 124 states and 138 transitions. [2019-05-23 11:14:19,075 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:14:19,075 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 24 [2019-05-23 11:14:19,075 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,077 INFO L146 ILogger]: With dead ends: 124 [2019-05-23 11:14:19,078 INFO L146 ILogger]: Without dead ends: 74 [2019-05-23 11:14:19,078 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 11:14:19,080 INFO L146 ILogger]: Start minimizeSevpa. Operand 74 states. [2019-05-23 11:14:19,086 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 74 to 57. [2019-05-23 11:14:19,086 INFO L146 ILogger]: Start removeUnreachable. Operand 57 states. [2019-05-23 11:14:19,088 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2019-05-23 11:14:19,088 INFO L146 ILogger]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 24 [2019-05-23 11:14:19,088 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,088 INFO L146 ILogger]: Abstraction has 57 states and 63 transitions. [2019-05-23 11:14:19,088 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:14:19,089 INFO L146 ILogger]: Start isEmpty. Operand 57 states and 63 transitions. [2019-05-23 11:14:19,090 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:14:19,090 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,090 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:19,090 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,091 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,091 INFO L146 ILogger]: Analyzing trace with hash 825108758, now seen corresponding path program 1 times [2019-05-23 11:14:19,091 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,091 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,093 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,093 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,113 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,196 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:19,196 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:19,196 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 11:14:19,214 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,257 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,259 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:14:19,266 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:19,400 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:19,433 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:19,433 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:14:19,434 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:14:19,434 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:14:19,435 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:14:19,435 INFO L146 ILogger]: Start difference. First operand 57 states and 63 transitions. Second operand 5 states. [2019-05-23 11:14:19,576 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,576 INFO L146 ILogger]: Finished difference Result 149 states and 166 transitions. [2019-05-23 11:14:19,577 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:14:19,577 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 31 [2019-05-23 11:14:19,577 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,579 INFO L146 ILogger]: With dead ends: 149 [2019-05-23 11:14:19,579 INFO L146 ILogger]: Without dead ends: 98 [2019-05-23 11:14:19,580 INFO L146 ILogger]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:14:19,580 INFO L146 ILogger]: Start minimizeSevpa. Operand 98 states. [2019-05-23 11:14:19,586 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 98 to 76. [2019-05-23 11:14:19,587 INFO L146 ILogger]: Start removeUnreachable. Operand 76 states. [2019-05-23 11:14:19,588 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2019-05-23 11:14:19,588 INFO L146 ILogger]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 31 [2019-05-23 11:14:19,588 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,588 INFO L146 ILogger]: Abstraction has 76 states and 83 transitions. [2019-05-23 11:14:19,588 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:14:19,589 INFO L146 ILogger]: Start isEmpty. Operand 76 states and 83 transitions. [2019-05-23 11:14:19,590 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:14:19,590 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,590 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] [2019-05-23 11:14:19,591 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,591 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,591 INFO L146 ILogger]: Analyzing trace with hash -239327044, now seen corresponding path program 2 times [2019-05-23 11:14:19,591 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,591 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,592 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,592 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,592 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,606 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,705 INFO L146 ILogger]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:19,706 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:19,706 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 11:14:19,726 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:19,757 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:19,757 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,758 INFO L146 ILogger]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:14:19,760 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:19,816 INFO L146 ILogger]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:19,835 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:19,835 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:14:19,835 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:14:19,836 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:14:19,836 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:14:19,836 INFO L146 ILogger]: Start difference. First operand 76 states and 83 transitions. Second operand 6 states. [2019-05-23 11:14:20,084 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:20,085 INFO L146 ILogger]: Finished difference Result 192 states and 212 transitions. [2019-05-23 11:14:20,085 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:14:20,086 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 38 [2019-05-23 11:14:20,086 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:20,088 INFO L146 ILogger]: With dead ends: 192 [2019-05-23 11:14:20,088 INFO L146 ILogger]: Without dead ends: 122 [2019-05-23 11:14:20,089 INFO L146 ILogger]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:14:20,089 INFO L146 ILogger]: Start minimizeSevpa. Operand 122 states. [2019-05-23 11:14:20,096 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 122 to 100. [2019-05-23 11:14:20,096 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:14:20,097 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2019-05-23 11:14:20,098 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 38 [2019-05-23 11:14:20,098 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:20,098 INFO L146 ILogger]: Abstraction has 100 states and 109 transitions. [2019-05-23 11:14:20,098 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:14:20,099 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 109 transitions. [2019-05-23 11:14:20,100 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 46 [2019-05-23 11:14:20,100 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:20,100 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:20,101 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:20,101 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:20,101 INFO L146 ILogger]: Analyzing trace with hash -1874566570, now seen corresponding path program 3 times [2019-05-23 11:14:20,102 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:20,102 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:20,103 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,103 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:20,103 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,118 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,213 INFO L146 ILogger]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:20,213 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:20,213 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 11:14:20,233 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:20,287 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:14:20,288 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,288 INFO L146 ILogger]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:14:20,291 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:20,308 INFO L146 ILogger]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:20,335 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:20,335 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:14:20,335 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:14:20,335 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:14:20,336 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:14:20,336 INFO L146 ILogger]: Start difference. First operand 100 states and 109 transitions. Second operand 7 states. [2019-05-23 11:14:20,565 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:20,565 INFO L146 ILogger]: Finished difference Result 240 states and 264 transitions. [2019-05-23 11:14:20,566 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:14:20,567 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 45 [2019-05-23 11:14:20,567 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:20,569 INFO L146 ILogger]: With dead ends: 240 [2019-05-23 11:14:20,573 INFO L146 ILogger]: Without dead ends: 146 [2019-05-23 11:14:20,574 INFO L146 ILogger]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:14:20,575 INFO L146 ILogger]: Start minimizeSevpa. Operand 146 states. [2019-05-23 11:14:20,594 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 146 to 124. [2019-05-23 11:14:20,595 INFO L146 ILogger]: Start removeUnreachable. Operand 124 states. [2019-05-23 11:14:20,596 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2019-05-23 11:14:20,596 INFO L146 ILogger]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 45 [2019-05-23 11:14:20,600 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:20,600 INFO L146 ILogger]: Abstraction has 124 states and 135 transitions. [2019-05-23 11:14:20,600 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:14:20,600 INFO L146 ILogger]: Start isEmpty. Operand 124 states and 135 transitions. [2019-05-23 11:14:20,605 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 53 [2019-05-23 11:14:20,606 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:20,606 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:14:20,606 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:20,607 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:20,607 INFO L146 ILogger]: Analyzing trace with hash -1456535684, now seen corresponding path program 4 times [2019-05-23 11:14:20,607 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:20,607 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:20,608 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,608 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:20,608 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,643 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,834 INFO L146 ILogger]: Checked inductivity of 47 backedges. 1 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:20,834 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:20,835 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 11:14:20,843 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:20,878 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:20,878 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,879 INFO L146 ILogger]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:20,881 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:20,898 INFO L146 ILogger]: Checked inductivity of 47 backedges. 1 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:20,919 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:20,920 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:14:20,920 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:14:20,920 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:14:20,921 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:14:20,921 INFO L146 ILogger]: Start difference. First operand 124 states and 135 transitions. Second operand 8 states. [2019-05-23 11:14:21,290 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:21,291 INFO L146 ILogger]: Finished difference Result 288 states and 316 transitions. [2019-05-23 11:14:21,292 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:14:21,292 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 52 [2019-05-23 11:14:21,293 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:21,294 INFO L146 ILogger]: With dead ends: 288 [2019-05-23 11:14:21,295 INFO L146 ILogger]: Without dead ends: 170 [2019-05-23 11:14:21,295 INFO L146 ILogger]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:14:21,296 INFO L146 ILogger]: Start minimizeSevpa. Operand 170 states. [2019-05-23 11:14:21,303 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 170 to 148. [2019-05-23 11:14:21,303 INFO L146 ILogger]: Start removeUnreachable. Operand 148 states. [2019-05-23 11:14:21,304 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 148 states to 148 states and 161 transitions. [2019-05-23 11:14:21,304 INFO L146 ILogger]: Start accepts. Automaton has 148 states and 161 transitions. Word has length 52 [2019-05-23 11:14:21,305 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:21,305 INFO L146 ILogger]: Abstraction has 148 states and 161 transitions. [2019-05-23 11:14:21,305 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:14:21,305 INFO L146 ILogger]: Start isEmpty. Operand 148 states and 161 transitions. [2019-05-23 11:14:21,307 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:14:21,307 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:21,307 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:14:21,307 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:21,308 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:21,308 INFO L146 ILogger]: Analyzing trace with hash 576547734, now seen corresponding path program 5 times [2019-05-23 11:14:21,308 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:21,308 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:21,309 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:21,309 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:21,309 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:21,322 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,547 INFO L146 ILogger]: Checked inductivity of 76 backedges. 1 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:21,547 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:21,548 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 11:14:21,558 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:21,641 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:14:21,641 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,642 INFO L146 ILogger]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:14:21,645 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:21,675 INFO L146 ILogger]: Checked inductivity of 76 backedges. 1 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:21,696 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:21,696 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:14:21,697 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:14:21,697 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:14:21,697 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:14:21,698 INFO L146 ILogger]: Start difference. First operand 148 states and 161 transitions. Second operand 9 states. [2019-05-23 11:14:22,008 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:22,009 INFO L146 ILogger]: Finished difference Result 336 states and 368 transitions. [2019-05-23 11:14:22,009 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:14:22,009 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 59 [2019-05-23 11:14:22,010 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:22,010 INFO L146 ILogger]: With dead ends: 336 [2019-05-23 11:14:22,011 INFO L146 ILogger]: Without dead ends: 194 [2019-05-23 11:14:22,011 INFO L146 ILogger]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:14:22,012 INFO L146 ILogger]: Start minimizeSevpa. Operand 194 states. [2019-05-23 11:14:22,019 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 194 to 172. [2019-05-23 11:14:22,019 INFO L146 ILogger]: Start removeUnreachable. Operand 172 states. [2019-05-23 11:14:22,021 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 172 states to 172 states and 187 transitions. [2019-05-23 11:14:22,024 INFO L146 ILogger]: Start accepts. Automaton has 172 states and 187 transitions. Word has length 59 [2019-05-23 11:14:22,024 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:22,024 INFO L146 ILogger]: Abstraction has 172 states and 187 transitions. [2019-05-23 11:14:22,024 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:14:22,025 INFO L146 ILogger]: Start isEmpty. Operand 172 states and 187 transitions. [2019-05-23 11:14:22,026 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:14:22,026 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:22,029 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:14:22,029 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:22,029 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:22,029 INFO L146 ILogger]: Analyzing trace with hash 466949692, now seen corresponding path program 6 times [2019-05-23 11:14:22,030 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:22,030 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:22,031 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,031 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:22,031 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,055 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,216 INFO L146 ILogger]: Checked inductivity of 112 backedges. 1 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:22,217 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:22,217 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 11:14:22,229 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:22,273 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-05-23 11:14:22,273 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,274 INFO L146 ILogger]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:22,277 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:22,313 INFO L146 ILogger]: Checked inductivity of 112 backedges. 1 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:22,331 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:22,331 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:14:22,331 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:14:22,332 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:14:22,332 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:14:22,332 INFO L146 ILogger]: Start difference. First operand 172 states and 187 transitions. Second operand 10 states. [2019-05-23 11:14:22,513 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:22,513 INFO L146 ILogger]: Finished difference Result 384 states and 420 transitions. [2019-05-23 11:14:22,514 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:14:22,514 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 66 [2019-05-23 11:14:22,514 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:22,516 INFO L146 ILogger]: With dead ends: 384 [2019-05-23 11:14:22,516 INFO L146 ILogger]: Without dead ends: 218 [2019-05-23 11:14:22,517 INFO L146 ILogger]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:14:22,518 INFO L146 ILogger]: Start minimizeSevpa. Operand 218 states. [2019-05-23 11:14:22,524 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 218 to 196. [2019-05-23 11:14:22,524 INFO L146 ILogger]: Start removeUnreachable. Operand 196 states. [2019-05-23 11:14:22,525 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 196 states to 196 states and 213 transitions. [2019-05-23 11:14:22,525 INFO L146 ILogger]: Start accepts. Automaton has 196 states and 213 transitions. Word has length 66 [2019-05-23 11:14:22,525 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:22,525 INFO L146 ILogger]: Abstraction has 196 states and 213 transitions. [2019-05-23 11:14:22,526 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:14:22,526 INFO L146 ILogger]: Start isEmpty. Operand 196 states and 213 transitions. [2019-05-23 11:14:22,527 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 74 [2019-05-23 11:14:22,528 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:22,528 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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 11:14:22,528 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:22,528 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:22,528 INFO L146 ILogger]: Analyzing trace with hash -1035123498, now seen corresponding path program 7 times [2019-05-23 11:14:22,529 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:22,529 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:22,529 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,530 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:22,530 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,543 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,720 INFO L146 ILogger]: Checked inductivity of 155 backedges. 1 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:22,721 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:22,721 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 11:14:22,729 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:22,761 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,762 INFO L146 ILogger]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:14:22,764 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:22,882 INFO L146 ILogger]: Checked inductivity of 155 backedges. 1 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:22,924 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:22,925 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:14:22,925 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:14:22,925 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:14:22,926 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:14:22,926 INFO L146 ILogger]: Start difference. First operand 196 states and 213 transitions. Second operand 11 states. [2019-05-23 11:14:23,476 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:23,477 INFO L146 ILogger]: Finished difference Result 432 states and 472 transitions. [2019-05-23 11:14:23,478 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:14:23,478 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 73 [2019-05-23 11:14:23,479 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:23,480 INFO L146 ILogger]: With dead ends: 432 [2019-05-23 11:14:23,480 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:14:23,481 INFO L146 ILogger]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:14:23,481 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:14:23,485 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 220. [2019-05-23 11:14:23,486 INFO L146 ILogger]: Start removeUnreachable. Operand 220 states. [2019-05-23 11:14:23,486 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 220 states to 220 states and 239 transitions. [2019-05-23 11:14:23,487 INFO L146 ILogger]: Start accepts. Automaton has 220 states and 239 transitions. Word has length 73 [2019-05-23 11:14:23,487 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:23,487 INFO L146 ILogger]: Abstraction has 220 states and 239 transitions. [2019-05-23 11:14:23,487 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:14:23,487 INFO L146 ILogger]: Start isEmpty. Operand 220 states and 239 transitions. [2019-05-23 11:14:23,489 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 81 [2019-05-23 11:14:23,489 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:23,489 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 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 11:14:23,489 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:23,489 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:23,490 INFO L146 ILogger]: Analyzing trace with hash 1482315004, now seen corresponding path program 8 times [2019-05-23 11:14:23,490 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:23,490 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:23,491 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,491 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:23,491 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,504 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,668 INFO L146 ILogger]: Checked inductivity of 205 backedges. 1 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:23,668 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:23,668 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 11:14:23,680 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:23,704 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:23,704 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,705 INFO L146 ILogger]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:14:23,712 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:23,740 INFO L146 ILogger]: Checked inductivity of 205 backedges. 1 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:23,766 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:23,767 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:14:23,767 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:14:23,767 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:14:23,768 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:14:23,768 INFO L146 ILogger]: Start difference. First operand 220 states and 239 transitions. Second operand 12 states. [2019-05-23 11:14:23,968 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:23,968 INFO L146 ILogger]: Finished difference Result 480 states and 524 transitions. [2019-05-23 11:14:23,971 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:14:23,971 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 80 [2019-05-23 11:14:23,971 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:23,973 INFO L146 ILogger]: With dead ends: 480 [2019-05-23 11:14:23,973 INFO L146 ILogger]: Without dead ends: 266 [2019-05-23 11:14:23,973 INFO L146 ILogger]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:14:23,974 INFO L146 ILogger]: Start minimizeSevpa. Operand 266 states. [2019-05-23 11:14:23,978 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 266 to 244. [2019-05-23 11:14:23,978 INFO L146 ILogger]: Start removeUnreachable. Operand 244 states. [2019-05-23 11:14:23,979 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 244 states to 244 states and 265 transitions. [2019-05-23 11:14:23,979 INFO L146 ILogger]: Start accepts. Automaton has 244 states and 265 transitions. Word has length 80 [2019-05-23 11:14:23,980 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:23,980 INFO L146 ILogger]: Abstraction has 244 states and 265 transitions. [2019-05-23 11:14:23,980 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:14:23,980 INFO L146 ILogger]: Start isEmpty. Operand 244 states and 265 transitions. [2019-05-23 11:14:23,981 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 88 [2019-05-23 11:14:23,981 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:23,981 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 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 11:14:23,982 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:23,982 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:23,982 INFO L146 ILogger]: Analyzing trace with hash -941101546, now seen corresponding path program 9 times [2019-05-23 11:14:23,982 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:23,982 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:23,983 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,983 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:23,983 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,995 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,144 INFO L146 ILogger]: Checked inductivity of 262 backedges. 1 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:24,144 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:24,144 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 11:14:24,153 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:24,179 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-05-23 11:14:24,180 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,180 INFO L146 ILogger]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:14:24,184 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:24,213 INFO L146 ILogger]: Checked inductivity of 262 backedges. 1 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:24,235 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:24,235 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:14:24,235 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:14:24,235 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:14:24,236 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:14:24,236 INFO L146 ILogger]: Start difference. First operand 244 states and 265 transitions. Second operand 13 states. [2019-05-23 11:14:24,423 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:24,424 INFO L146 ILogger]: Finished difference Result 528 states and 576 transitions. [2019-05-23 11:14:24,433 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:14:24,433 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 87 [2019-05-23 11:14:24,433 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:24,435 INFO L146 ILogger]: With dead ends: 528 [2019-05-23 11:14:24,435 INFO L146 ILogger]: Without dead ends: 290 [2019-05-23 11:14:24,441 INFO L146 ILogger]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:14:24,441 INFO L146 ILogger]: Start minimizeSevpa. Operand 290 states. [2019-05-23 11:14:24,447 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 290 to 268. [2019-05-23 11:14:24,447 INFO L146 ILogger]: Start removeUnreachable. Operand 268 states. [2019-05-23 11:14:24,448 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 268 states to 268 states and 291 transitions. [2019-05-23 11:14:24,448 INFO L146 ILogger]: Start accepts. Automaton has 268 states and 291 transitions. Word has length 87 [2019-05-23 11:14:24,449 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:24,449 INFO L146 ILogger]: Abstraction has 268 states and 291 transitions. [2019-05-23 11:14:24,449 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:14:24,449 INFO L146 ILogger]: Start isEmpty. Operand 268 states and 291 transitions. [2019-05-23 11:14:24,450 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 95 [2019-05-23 11:14:24,450 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:24,450 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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 11:14:24,451 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:24,451 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:24,451 INFO L146 ILogger]: Analyzing trace with hash 1349174204, now seen corresponding path program 10 times [2019-05-23 11:14:24,451 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:24,451 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:24,453 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,453 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:24,453 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,480 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:25,953 INFO L146 ILogger]: Checked inductivity of 326 backedges. 1 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:25,954 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:25,954 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 11:14:25,964 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:26,003 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:26,004 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,005 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:14:26,006 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:26,042 INFO L146 ILogger]: Checked inductivity of 326 backedges. 1 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:26,064 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:26,064 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-05-23 11:14:26,064 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:14:26,064 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:14:26,065 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:14:26,065 INFO L146 ILogger]: Start difference. First operand 268 states and 291 transitions. Second operand 14 states. [2019-05-23 11:14:26,251 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:26,252 INFO L146 ILogger]: Finished difference Result 576 states and 628 transitions. [2019-05-23 11:14:26,256 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:14:26,256 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 94 [2019-05-23 11:14:26,257 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:26,258 INFO L146 ILogger]: With dead ends: 576 [2019-05-23 11:14:26,259 INFO L146 ILogger]: Without dead ends: 314 [2019-05-23 11:14:26,259 INFO L146 ILogger]: 0 DeclaredPredicates, 106 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:14:26,260 INFO L146 ILogger]: Start minimizeSevpa. Operand 314 states. [2019-05-23 11:14:26,265 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 314 to 292. [2019-05-23 11:14:26,265 INFO L146 ILogger]: Start removeUnreachable. Operand 292 states. [2019-05-23 11:14:26,266 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 292 states to 292 states and 317 transitions. [2019-05-23 11:14:26,266 INFO L146 ILogger]: Start accepts. Automaton has 292 states and 317 transitions. Word has length 94 [2019-05-23 11:14:26,266 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:26,266 INFO L146 ILogger]: Abstraction has 292 states and 317 transitions. [2019-05-23 11:14:26,267 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:14:26,267 INFO L146 ILogger]: Start isEmpty. Operand 292 states and 317 transitions. [2019-05-23 11:14:26,268 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 102 [2019-05-23 11:14:26,268 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:26,268 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 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 11:14:26,268 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:26,269 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:26,269 INFO L146 ILogger]: Analyzing trace with hash 1208051542, now seen corresponding path program 11 times [2019-05-23 11:14:26,269 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:26,269 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:26,270 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,270 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:26,270 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,281 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,433 INFO L146 ILogger]: Checked inductivity of 397 backedges. 1 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:26,434 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:26,434 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 11:14:26,447 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:26,516 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:14:26,517 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:26,517 INFO L146 ILogger]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:14:26,519 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:26,549 INFO L146 ILogger]: Checked inductivity of 397 backedges. 1 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:26,567 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:26,568 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:14:26,568 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:14:26,568 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:14:26,569 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:14:26,569 INFO L146 ILogger]: Start difference. First operand 292 states and 317 transitions. Second operand 15 states. [2019-05-23 11:14:26,826 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:26,826 INFO L146 ILogger]: Finished difference Result 624 states and 680 transitions. [2019-05-23 11:14:26,826 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:14:26,826 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 101 [2019-05-23 11:14:26,827 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:26,828 INFO L146 ILogger]: With dead ends: 624 [2019-05-23 11:14:26,828 INFO L146 ILogger]: Without dead ends: 338 [2019-05-23 11:14:26,829 INFO L146 ILogger]: 0 DeclaredPredicates, 114 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:14:26,830 INFO L146 ILogger]: Start minimizeSevpa. Operand 338 states. [2019-05-23 11:14:26,835 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 338 to 316. [2019-05-23 11:14:26,835 INFO L146 ILogger]: Start removeUnreachable. Operand 316 states. [2019-05-23 11:14:26,836 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 316 states to 316 states and 343 transitions. [2019-05-23 11:14:26,837 INFO L146 ILogger]: Start accepts. Automaton has 316 states and 343 transitions. Word has length 101 [2019-05-23 11:14:26,837 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:26,837 INFO L146 ILogger]: Abstraction has 316 states and 343 transitions. [2019-05-23 11:14:26,837 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:14:26,837 INFO L146 ILogger]: Start isEmpty. Operand 316 states and 343 transitions. [2019-05-23 11:14:26,838 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 109 [2019-05-23 11:14:26,839 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:26,839 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 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 11:14:26,839 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:26,839 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:26,839 INFO L146 ILogger]: Analyzing trace with hash -1733139844, now seen corresponding path program 12 times [2019-05-23 11:14:26,840 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:26,840 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:26,840 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,841 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:26,841 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:26,851 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,125 INFO L146 ILogger]: Checked inductivity of 475 backedges. 1 proven. 474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:27,125 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:27,125 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 11:14:27,134 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:27,174 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2019-05-23 11:14:27,175 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:27,175 INFO L146 ILogger]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:14:27,178 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:27,215 INFO L146 ILogger]: Checked inductivity of 475 backedges. 1 proven. 474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:27,243 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:27,243 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:14:27,244 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:14:27,244 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:14:27,244 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:14:27,245 INFO L146 ILogger]: Start difference. First operand 316 states and 343 transitions. Second operand 16 states. [2019-05-23 11:14:27,453 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:27,453 INFO L146 ILogger]: Finished difference Result 672 states and 732 transitions. [2019-05-23 11:14:27,457 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:14:27,458 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 108 [2019-05-23 11:14:27,458 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:27,460 INFO L146 ILogger]: With dead ends: 672 [2019-05-23 11:14:27,460 INFO L146 ILogger]: Without dead ends: 362 [2019-05-23 11:14:27,461 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:14:27,461 INFO L146 ILogger]: Start minimizeSevpa. Operand 362 states. [2019-05-23 11:14:27,467 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 362 to 340. [2019-05-23 11:14:27,467 INFO L146 ILogger]: Start removeUnreachable. Operand 340 states. [2019-05-23 11:14:27,468 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 340 states to 340 states and 369 transitions. [2019-05-23 11:14:27,468 INFO L146 ILogger]: Start accepts. Automaton has 340 states and 369 transitions. Word has length 108 [2019-05-23 11:14:27,469 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:27,469 INFO L146 ILogger]: Abstraction has 340 states and 369 transitions. [2019-05-23 11:14:27,469 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:14:27,469 INFO L146 ILogger]: Start isEmpty. Operand 340 states and 369 transitions. [2019-05-23 11:14:27,470 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:14:27,470 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:27,470 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 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 11:14:27,471 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:27,471 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:27,471 INFO L146 ILogger]: Analyzing trace with hash 1416474774, now seen corresponding path program 13 times [2019-05-23 11:14:27,471 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:27,471 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:27,472 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,472 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:27,472 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:27,484 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,355 INFO L146 ILogger]: Checked inductivity of 560 backedges. 1 proven. 559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:28,356 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:28,356 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 11:14:28,364 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:28,392 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:28,393 INFO L146 ILogger]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:14:28,395 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:28,518 INFO L146 ILogger]: Checked inductivity of 560 backedges. 1 proven. 559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:28,547 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:28,547 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:14:28,548 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:14:28,548 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:14:28,548 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:14:28,549 INFO L146 ILogger]: Start difference. First operand 340 states and 369 transitions. Second operand 17 states. [2019-05-23 11:14:28,988 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:28,989 INFO L146 ILogger]: Finished difference Result 720 states and 784 transitions. [2019-05-23 11:14:28,990 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:14:28,990 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 115 [2019-05-23 11:14:28,990 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:28,992 INFO L146 ILogger]: With dead ends: 720 [2019-05-23 11:14:28,992 INFO L146 ILogger]: Without dead ends: 386 [2019-05-23 11:14:28,993 INFO L146 ILogger]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:14:28,994 INFO L146 ILogger]: Start minimizeSevpa. Operand 386 states. [2019-05-23 11:14:29,000 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 386 to 364. [2019-05-23 11:14:29,000 INFO L146 ILogger]: Start removeUnreachable. Operand 364 states. [2019-05-23 11:14:29,001 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 364 states to 364 states and 395 transitions. [2019-05-23 11:14:29,002 INFO L146 ILogger]: Start accepts. Automaton has 364 states and 395 transitions. Word has length 115 [2019-05-23 11:14:29,002 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:29,002 INFO L146 ILogger]: Abstraction has 364 states and 395 transitions. [2019-05-23 11:14:29,002 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:14:29,002 INFO L146 ILogger]: Start isEmpty. Operand 364 states and 395 transitions. [2019-05-23 11:14:29,003 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 123 [2019-05-23 11:14:29,004 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:29,004 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 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 11:14:29,004 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:29,004 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:29,004 INFO L146 ILogger]: Analyzing trace with hash 685584700, now seen corresponding path program 14 times [2019-05-23 11:14:29,005 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:29,005 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:29,005 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:29,005 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:29,006 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:29,016 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,234 INFO L146 ILogger]: Checked inductivity of 652 backedges. 1 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:29,234 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:29,234 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 11:14:29,244 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:29,299 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:29,299 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:29,300 INFO L146 ILogger]: Trace formula consists of 187 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:14:29,302 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:29,419 INFO L146 ILogger]: Checked inductivity of 652 backedges. 1 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:29,438 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:29,438 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:14:29,439 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:14:29,439 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:14:29,439 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:14:29,439 INFO L146 ILogger]: Start difference. First operand 364 states and 395 transitions. Second operand 18 states. [2019-05-23 11:14:29,683 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:29,683 INFO L146 ILogger]: Finished difference Result 768 states and 836 transitions. [2019-05-23 11:14:29,687 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:14:29,687 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 122 [2019-05-23 11:14:29,687 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:29,689 INFO L146 ILogger]: With dead ends: 768 [2019-05-23 11:14:29,689 INFO L146 ILogger]: Without dead ends: 410 [2019-05-23 11:14:29,690 INFO L146 ILogger]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:14:29,691 INFO L146 ILogger]: Start minimizeSevpa. Operand 410 states. [2019-05-23 11:14:29,697 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 410 to 388. [2019-05-23 11:14:29,697 INFO L146 ILogger]: Start removeUnreachable. Operand 388 states. [2019-05-23 11:14:29,698 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 388 states to 388 states and 421 transitions. [2019-05-23 11:14:29,698 INFO L146 ILogger]: Start accepts. Automaton has 388 states and 421 transitions. Word has length 122 [2019-05-23 11:14:29,698 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:29,698 INFO L146 ILogger]: Abstraction has 388 states and 421 transitions. [2019-05-23 11:14:29,699 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:14:29,699 INFO L146 ILogger]: Start isEmpty. Operand 388 states and 421 transitions. [2019-05-23 11:14:29,700 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 130 [2019-05-23 11:14:29,700 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:29,700 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 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 11:14:29,701 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:29,701 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:29,701 INFO L146 ILogger]: Analyzing trace with hash 1006684630, now seen corresponding path program 15 times [2019-05-23 11:14:29,701 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:29,701 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:29,702 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:29,702 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:29,702 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:29,712 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:30,698 INFO L146 ILogger]: Checked inductivity of 751 backedges. 1 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:30,698 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:30,698 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 11:14:30,707 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:30,774 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2019-05-23 11:14:30,774 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:30,775 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:14:30,777 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:30,809 INFO L146 ILogger]: Checked inductivity of 751 backedges. 1 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:30,834 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:30,835 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:14:30,835 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:14:30,835 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:14:30,836 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:14:30,836 INFO L146 ILogger]: Start difference. First operand 388 states and 421 transitions. Second operand 19 states. [2019-05-23 11:14:31,063 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:31,063 INFO L146 ILogger]: Finished difference Result 816 states and 888 transitions. [2019-05-23 11:14:31,064 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:14:31,064 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 129 [2019-05-23 11:14:31,064 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:31,066 INFO L146 ILogger]: With dead ends: 816 [2019-05-23 11:14:31,066 INFO L146 ILogger]: Without dead ends: 434 [2019-05-23 11:14:31,067 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:14:31,068 INFO L146 ILogger]: Start minimizeSevpa. Operand 434 states. [2019-05-23 11:14:31,074 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 434 to 412. [2019-05-23 11:14:31,074 INFO L146 ILogger]: Start removeUnreachable. Operand 412 states. [2019-05-23 11:14:31,076 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 412 states to 412 states and 447 transitions. [2019-05-23 11:14:31,076 INFO L146 ILogger]: Start accepts. Automaton has 412 states and 447 transitions. Word has length 129 [2019-05-23 11:14:31,076 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:31,076 INFO L146 ILogger]: Abstraction has 412 states and 447 transitions. [2019-05-23 11:14:31,076 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:14:31,076 INFO L146 ILogger]: Start isEmpty. Operand 412 states and 447 transitions. [2019-05-23 11:14:31,078 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 137 [2019-05-23 11:14:31,078 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:31,078 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 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 11:14:31,079 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:31,079 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:31,079 INFO L146 ILogger]: Analyzing trace with hash 462893052, now seen corresponding path program 16 times [2019-05-23 11:14:31,079 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:31,080 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:31,081 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:31,081 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:31,081 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:31,092 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:31,358 INFO L146 ILogger]: Checked inductivity of 857 backedges. 1 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:31,359 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:31,359 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 11:14:31,368 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:31,399 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:31,400 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:31,401 INFO L146 ILogger]: Trace formula consists of 207 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:14:31,403 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:31,435 INFO L146 ILogger]: Checked inductivity of 857 backedges. 1 proven. 856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:31,462 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:31,462 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-05-23 11:14:31,463 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:14:31,463 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:14:31,463 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:14:31,464 INFO L146 ILogger]: Start difference. First operand 412 states and 447 transitions. Second operand 20 states. [2019-05-23 11:14:31,719 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:31,720 INFO L146 ILogger]: Finished difference Result 864 states and 940 transitions. [2019-05-23 11:14:31,721 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:14:31,721 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 136 [2019-05-23 11:14:31,721 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:31,724 INFO L146 ILogger]: With dead ends: 864 [2019-05-23 11:14:31,725 INFO L146 ILogger]: Without dead ends: 458 [2019-05-23 11:14:31,726 INFO L146 ILogger]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:14:31,727 INFO L146 ILogger]: Start minimizeSevpa. Operand 458 states. [2019-05-23 11:14:31,733 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 458 to 436. [2019-05-23 11:14:31,733 INFO L146 ILogger]: Start removeUnreachable. Operand 436 states. [2019-05-23 11:14:31,734 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 436 states to 436 states and 473 transitions. [2019-05-23 11:14:31,734 INFO L146 ILogger]: Start accepts. Automaton has 436 states and 473 transitions. Word has length 136 [2019-05-23 11:14:31,735 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:31,735 INFO L146 ILogger]: Abstraction has 436 states and 473 transitions. [2019-05-23 11:14:31,735 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:14:31,735 INFO L146 ILogger]: Start isEmpty. Operand 436 states and 473 transitions. [2019-05-23 11:14:31,737 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 144 [2019-05-23 11:14:31,737 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:31,737 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 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 11:14:31,737 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:31,737 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:31,737 INFO L146 ILogger]: Analyzing trace with hash -896617706, now seen corresponding path program 17 times [2019-05-23 11:14:31,738 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:31,738 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:31,738 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:31,739 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:31,739 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:31,749 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:32,029 INFO L146 ILogger]: Checked inductivity of 970 backedges. 1 proven. 969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:32,029 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:32,029 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 11:14:32,038 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:32,085 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-05-23 11:14:32,085 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:32,086 INFO L146 ILogger]: Trace formula consists of 178 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:14:32,087 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:32,141 INFO L146 ILogger]: Checked inductivity of 970 backedges. 1 proven. 969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:32,171 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:32,172 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:14:32,172 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:14:32,173 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:14:32,173 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:14:32,173 INFO L146 ILogger]: Start difference. First operand 436 states and 473 transitions. Second operand 21 states. [2019-05-23 11:14:32,474 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:32,474 INFO L146 ILogger]: Finished difference Result 912 states and 992 transitions. [2019-05-23 11:14:32,474 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:14:32,475 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 143 [2019-05-23 11:14:32,475 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:32,477 INFO L146 ILogger]: With dead ends: 912 [2019-05-23 11:14:32,477 INFO L146 ILogger]: Without dead ends: 482 [2019-05-23 11:14:32,478 INFO L146 ILogger]: 0 DeclaredPredicates, 162 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:14:32,478 INFO L146 ILogger]: Start minimizeSevpa. Operand 482 states. [2019-05-23 11:14:32,485 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 482 to 460. [2019-05-23 11:14:32,485 INFO L146 ILogger]: Start removeUnreachable. Operand 460 states. [2019-05-23 11:14:32,486 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 460 states to 460 states and 499 transitions. [2019-05-23 11:14:32,486 INFO L146 ILogger]: Start accepts. Automaton has 460 states and 499 transitions. Word has length 143 [2019-05-23 11:14:32,486 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:32,486 INFO L146 ILogger]: Abstraction has 460 states and 499 transitions. [2019-05-23 11:14:32,486 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:14:32,487 INFO L146 ILogger]: Start isEmpty. Operand 460 states and 499 transitions. [2019-05-23 11:14:32,488 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 151 [2019-05-23 11:14:32,488 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:32,489 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 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 11:14:32,489 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:32,489 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:32,489 INFO L146 ILogger]: Analyzing trace with hash 1854693052, now seen corresponding path program 18 times [2019-05-23 11:14:32,489 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:32,489 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:32,490 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:32,490 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:32,490 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:32,502 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:32,742 INFO L146 ILogger]: Checked inductivity of 1090 backedges. 1 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:32,743 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:32,743 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 11:14:32,753 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:32,803 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2019-05-23 11:14:32,804 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:32,805 INFO L146 ILogger]: Trace formula consists of 227 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:14:32,807 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:32,838 INFO L146 ILogger]: Checked inductivity of 1090 backedges. 1 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:32,857 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:32,858 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:14:32,858 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:14:32,858 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:14:32,859 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:14:32,859 INFO L146 ILogger]: Start difference. First operand 460 states and 499 transitions. Second operand 22 states. [2019-05-23 11:14:33,152 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:33,152 INFO L146 ILogger]: Finished difference Result 960 states and 1044 transitions. [2019-05-23 11:14:33,153 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:14:33,153 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 150 [2019-05-23 11:14:33,153 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:33,155 INFO L146 ILogger]: With dead ends: 960 [2019-05-23 11:14:33,156 INFO L146 ILogger]: Without dead ends: 506 [2019-05-23 11:14:33,157 INFO L146 ILogger]: 0 DeclaredPredicates, 170 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:14:33,157 INFO L146 ILogger]: Start minimizeSevpa. Operand 506 states. [2019-05-23 11:14:33,166 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 506 to 484. [2019-05-23 11:14:33,166 INFO L146 ILogger]: Start removeUnreachable. Operand 484 states. [2019-05-23 11:14:33,167 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 484 states to 484 states and 525 transitions. [2019-05-23 11:14:33,167 INFO L146 ILogger]: Start accepts. Automaton has 484 states and 525 transitions. Word has length 150 [2019-05-23 11:14:33,168 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:33,168 INFO L146 ILogger]: Abstraction has 484 states and 525 transitions. [2019-05-23 11:14:33,168 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:14:33,168 INFO L146 ILogger]: Start isEmpty. Operand 484 states and 525 transitions. [2019-05-23 11:14:33,170 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:14:33,170 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:33,170 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 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 11:14:33,170 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:33,171 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:33,171 INFO L146 ILogger]: Analyzing trace with hash -1997837226, now seen corresponding path program 19 times [2019-05-23 11:14:33,171 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:33,171 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:33,172 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:33,172 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:33,172 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:33,185 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:33,929 INFO L146 ILogger]: Checked inductivity of 1217 backedges. 1 proven. 1216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:33,930 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:33,930 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 11:14:33,941 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:33,978 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:33,979 INFO L146 ILogger]: Trace formula consists of 237 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:14:33,981 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:34,039 INFO L146 ILogger]: Checked inductivity of 1217 backedges. 1 proven. 1216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:34,058 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:34,058 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:14:34,058 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:14:34,059 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:14:34,059 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:14:34,059 INFO L146 ILogger]: Start difference. First operand 484 states and 525 transitions. Second operand 23 states. [2019-05-23 11:14:34,376 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:34,376 INFO L146 ILogger]: Finished difference Result 1008 states and 1096 transitions. [2019-05-23 11:14:34,377 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:14:34,377 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 157 [2019-05-23 11:14:34,377 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:34,380 INFO L146 ILogger]: With dead ends: 1008 [2019-05-23 11:14:34,380 INFO L146 ILogger]: Without dead ends: 530 [2019-05-23 11:14:34,382 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:14:34,382 INFO L146 ILogger]: Start minimizeSevpa. Operand 530 states. [2019-05-23 11:14:34,389 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 530 to 508. [2019-05-23 11:14:34,389 INFO L146 ILogger]: Start removeUnreachable. Operand 508 states. [2019-05-23 11:14:34,390 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 508 states to 508 states and 551 transitions. [2019-05-23 11:14:34,390 INFO L146 ILogger]: Start accepts. Automaton has 508 states and 551 transitions. Word has length 157 [2019-05-23 11:14:34,390 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:34,390 INFO L146 ILogger]: Abstraction has 508 states and 551 transitions. [2019-05-23 11:14:34,390 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:14:34,391 INFO L146 ILogger]: Start isEmpty. Operand 508 states and 551 transitions. [2019-05-23 11:14:34,392 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 165 [2019-05-23 11:14:34,392 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:34,392 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 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 11:14:34,392 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:34,393 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:34,393 INFO L146 ILogger]: Analyzing trace with hash -1033323140, now seen corresponding path program 20 times [2019-05-23 11:14:34,393 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:34,393 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:34,394 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:34,394 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:34,394 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:34,405 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:34,693 INFO L146 ILogger]: Checked inductivity of 1351 backedges. 1 proven. 1350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:34,693 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:34,693 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 11:14:34,702 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:34,738 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:34,738 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:34,739 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:14:34,741 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:34,772 INFO L146 ILogger]: Checked inductivity of 1351 backedges. 1 proven. 1350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:34,791 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:34,791 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-05-23 11:14:34,791 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:14:34,792 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:14:34,792 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:14:34,792 INFO L146 ILogger]: Start difference. First operand 508 states and 551 transitions. Second operand 24 states. [2019-05-23 11:14:35,083 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:35,084 INFO L146 ILogger]: Finished difference Result 1056 states and 1148 transitions. [2019-05-23 11:14:35,084 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:14:35,084 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 164 [2019-05-23 11:14:35,085 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:35,087 INFO L146 ILogger]: With dead ends: 1056 [2019-05-23 11:14:35,087 INFO L146 ILogger]: Without dead ends: 554 [2019-05-23 11:14:35,088 INFO L146 ILogger]: 0 DeclaredPredicates, 186 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:14:35,089 INFO L146 ILogger]: Start minimizeSevpa. Operand 554 states. [2019-05-23 11:14:35,095 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 554 to 532. [2019-05-23 11:14:35,096 INFO L146 ILogger]: Start removeUnreachable. Operand 532 states. [2019-05-23 11:14:35,097 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 532 states to 532 states and 577 transitions. [2019-05-23 11:14:35,097 INFO L146 ILogger]: Start accepts. Automaton has 532 states and 577 transitions. Word has length 164 [2019-05-23 11:14:35,097 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:35,097 INFO L146 ILogger]: Abstraction has 532 states and 577 transitions. [2019-05-23 11:14:35,097 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:14:35,098 INFO L146 ILogger]: Start isEmpty. Operand 532 states and 577 transitions. [2019-05-23 11:14:35,099 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 172 [2019-05-23 11:14:35,099 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:35,099 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 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 11:14:35,100 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:35,100 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:35,100 INFO L146 ILogger]: Analyzing trace with hash -51710570, now seen corresponding path program 21 times [2019-05-23 11:14:35,100 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:35,100 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:35,101 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:35,101 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:35,101 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:35,112 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:35,435 INFO L146 ILogger]: Checked inductivity of 1492 backedges. 1 proven. 1491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:35,435 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:35,435 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 11:14:35,445 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:35,513 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2019-05-23 11:14:35,513 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:35,515 INFO L146 ILogger]: Trace formula consists of 257 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:14:35,517 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:35,570 INFO L146 ILogger]: Checked inductivity of 1492 backedges. 1 proven. 1491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:35,588 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:35,588 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-05-23 11:14:35,589 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:14:35,589 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:14:35,589 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:14:35,589 INFO L146 ILogger]: Start difference. First operand 532 states and 577 transitions. Second operand 25 states. [2019-05-23 11:14:35,918 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:35,918 INFO L146 ILogger]: Finished difference Result 1104 states and 1200 transitions. [2019-05-23 11:14:35,919 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:14:35,919 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 171 [2019-05-23 11:14:35,919 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:35,921 INFO L146 ILogger]: With dead ends: 1104 [2019-05-23 11:14:35,921 INFO L146 ILogger]: Without dead ends: 578 [2019-05-23 11:14:35,923 INFO L146 ILogger]: 0 DeclaredPredicates, 194 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:14:35,923 INFO L146 ILogger]: Start minimizeSevpa. Operand 578 states. [2019-05-23 11:14:35,930 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 578 to 556. [2019-05-23 11:14:35,930 INFO L146 ILogger]: Start removeUnreachable. Operand 556 states. [2019-05-23 11:14:35,931 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 556 states to 556 states and 603 transitions. [2019-05-23 11:14:35,931 INFO L146 ILogger]: Start accepts. Automaton has 556 states and 603 transitions. Word has length 171 [2019-05-23 11:14:35,932 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:35,932 INFO L146 ILogger]: Abstraction has 556 states and 603 transitions. [2019-05-23 11:14:35,932 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:14:35,932 INFO L146 ILogger]: Start isEmpty. Operand 556 states and 603 transitions. [2019-05-23 11:14:35,934 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 179 [2019-05-23 11:14:35,934 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:35,934 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 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 11:14:35,934 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:35,934 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:35,935 INFO L146 ILogger]: Analyzing trace with hash 450382908, now seen corresponding path program 22 times [2019-05-23 11:14:35,935 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:35,935 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:35,935 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:35,936 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:35,936 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:35,948 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:37,461 INFO L146 ILogger]: Checked inductivity of 1640 backedges. 1 proven. 1639 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:37,462 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:37,462 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 11:14:37,472 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:37,516 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:37,516 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:37,518 INFO L146 ILogger]: Trace formula consists of 267 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:14:37,520 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:37,561 INFO L146 ILogger]: Checked inductivity of 1640 backedges. 1 proven. 1639 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:37,589 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:37,589 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-05-23 11:14:37,590 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:14:37,590 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:14:37,590 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:14:37,591 INFO L146 ILogger]: Start difference. First operand 556 states and 603 transitions. Second operand 26 states. [2019-05-23 11:14:37,970 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:37,970 INFO L146 ILogger]: Finished difference Result 1152 states and 1252 transitions. [2019-05-23 11:14:37,970 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:14:37,970 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 178 [2019-05-23 11:14:37,971 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:37,973 INFO L146 ILogger]: With dead ends: 1152 [2019-05-23 11:14:37,973 INFO L146 ILogger]: Without dead ends: 602 [2019-05-23 11:14:37,974 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:14:37,975 INFO L146 ILogger]: Start minimizeSevpa. Operand 602 states. [2019-05-23 11:14:37,981 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 602 to 580. [2019-05-23 11:14:37,981 INFO L146 ILogger]: Start removeUnreachable. Operand 580 states. [2019-05-23 11:14:37,982 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 580 states to 580 states and 629 transitions. [2019-05-23 11:14:37,982 INFO L146 ILogger]: Start accepts. Automaton has 580 states and 629 transitions. Word has length 178 [2019-05-23 11:14:37,983 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:37,983 INFO L146 ILogger]: Abstraction has 580 states and 629 transitions. [2019-05-23 11:14:37,983 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:14:37,983 INFO L146 ILogger]: Start isEmpty. Operand 580 states and 629 transitions. [2019-05-23 11:14:37,985 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 186 [2019-05-23 11:14:37,985 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:37,985 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 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 11:14:37,985 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:37,985 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:37,986 INFO L146 ILogger]: Analyzing trace with hash -379498794, now seen corresponding path program 23 times [2019-05-23 11:14:37,986 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:37,986 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:37,986 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:37,987 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:37,987 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:37,999 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:38,434 INFO L146 ILogger]: Checked inductivity of 1795 backedges. 1 proven. 1794 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:38,434 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:38,435 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 11:14:38,443 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:38,523 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-05-23 11:14:38,523 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:38,524 INFO L146 ILogger]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:14:38,529 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:38,657 INFO L146 ILogger]: Checked inductivity of 1795 backedges. 1 proven. 1794 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:38,684 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:38,684 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:14:38,685 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:14:38,685 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:14:38,685 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:14:38,685 INFO L146 ILogger]: Start difference. First operand 580 states and 629 transitions. Second operand 27 states. [2019-05-23 11:14:40,296 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:40,296 INFO L146 ILogger]: Finished difference Result 1200 states and 1304 transitions. [2019-05-23 11:14:40,297 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:14:40,297 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 185 [2019-05-23 11:14:40,297 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:40,299 INFO L146 ILogger]: With dead ends: 1200 [2019-05-23 11:14:40,299 INFO L146 ILogger]: Without dead ends: 626 [2019-05-23 11:14:40,300 INFO L146 ILogger]: 0 DeclaredPredicates, 210 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:14:40,300 INFO L146 ILogger]: Start minimizeSevpa. Operand 626 states. [2019-05-23 11:14:40,307 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 626 to 604. [2019-05-23 11:14:40,307 INFO L146 ILogger]: Start removeUnreachable. Operand 604 states. [2019-05-23 11:14:40,308 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 604 states to 604 states and 655 transitions. [2019-05-23 11:14:40,308 INFO L146 ILogger]: Start accepts. Automaton has 604 states and 655 transitions. Word has length 185 [2019-05-23 11:14:40,309 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:40,309 INFO L146 ILogger]: Abstraction has 604 states and 655 transitions. [2019-05-23 11:14:40,309 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:14:40,309 INFO L146 ILogger]: Start isEmpty. Operand 604 states and 655 transitions. [2019-05-23 11:14:40,311 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 193 [2019-05-23 11:14:40,311 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:40,311 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 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 11:14:40,311 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:40,311 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:40,312 INFO L146 ILogger]: Analyzing trace with hash -1635316996, now seen corresponding path program 24 times [2019-05-23 11:14:40,312 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:40,312 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:40,312 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:40,313 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:40,313 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:40,325 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:40,946 INFO L146 ILogger]: Checked inductivity of 1957 backedges. 1 proven. 1956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:40,947 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:40,947 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 11:14:40,957 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:41,063 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2019-05-23 11:14:41,064 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:41,065 INFO L146 ILogger]: Trace formula consists of 287 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:14:41,067 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:41,163 INFO L146 ILogger]: Checked inductivity of 1957 backedges. 1 proven. 1956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:41,182 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:41,182 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2019-05-23 11:14:41,183 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:14:41,183 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:14:41,184 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:14:41,184 INFO L146 ILogger]: Start difference. First operand 604 states and 655 transitions. Second operand 28 states. [2019-05-23 11:14:41,542 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:41,542 INFO L146 ILogger]: Finished difference Result 1248 states and 1356 transitions. [2019-05-23 11:14:41,542 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:14:41,543 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 192 [2019-05-23 11:14:41,543 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:41,546 INFO L146 ILogger]: With dead ends: 1248 [2019-05-23 11:14:41,546 INFO L146 ILogger]: Without dead ends: 650 [2019-05-23 11:14:41,548 INFO L146 ILogger]: 0 DeclaredPredicates, 218 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:14:41,548 INFO L146 ILogger]: Start minimizeSevpa. Operand 650 states. [2019-05-23 11:14:41,555 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 650 to 628. [2019-05-23 11:14:41,555 INFO L146 ILogger]: Start removeUnreachable. Operand 628 states. [2019-05-23 11:14:41,556 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 628 states to 628 states and 681 transitions. [2019-05-23 11:14:41,557 INFO L146 ILogger]: Start accepts. Automaton has 628 states and 681 transitions. Word has length 192 [2019-05-23 11:14:41,557 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:41,557 INFO L146 ILogger]: Abstraction has 628 states and 681 transitions. [2019-05-23 11:14:41,557 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:14:41,557 INFO L146 ILogger]: Start isEmpty. Operand 628 states and 681 transitions. [2019-05-23 11:14:41,559 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 200 [2019-05-23 11:14:41,559 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:41,559 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 25, 25, 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 11:14:41,560 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:41,560 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:41,560 INFO L146 ILogger]: Analyzing trace with hash -1910343658, now seen corresponding path program 25 times [2019-05-23 11:14:41,560 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:41,560 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:41,561 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:41,561 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:41,561 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:41,574 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:42,067 INFO L146 ILogger]: Checked inductivity of 2126 backedges. 1 proven. 2125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:42,067 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:42,067 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 11:14:42,075 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:42,117 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:42,118 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:14:42,120 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:42,179 INFO L146 ILogger]: Checked inductivity of 2126 backedges. 1 proven. 2125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:42,198 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:42,198 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-05-23 11:14:42,198 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:14:42,199 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:14:42,199 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:14:42,199 INFO L146 ILogger]: Start difference. First operand 628 states and 681 transitions. Second operand 29 states. [2019-05-23 11:14:42,677 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:42,677 INFO L146 ILogger]: Finished difference Result 1296 states and 1408 transitions. [2019-05-23 11:14:42,677 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:14:42,677 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 199 [2019-05-23 11:14:42,678 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:42,680 INFO L146 ILogger]: With dead ends: 1296 [2019-05-23 11:14:42,680 INFO L146 ILogger]: Without dead ends: 674 [2019-05-23 11:14:42,681 INFO L146 ILogger]: 0 DeclaredPredicates, 226 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:14:42,681 INFO L146 ILogger]: Start minimizeSevpa. Operand 674 states. [2019-05-23 11:14:42,688 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 674 to 652. [2019-05-23 11:14:42,688 INFO L146 ILogger]: Start removeUnreachable. Operand 652 states. [2019-05-23 11:14:42,689 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 652 states to 652 states and 707 transitions. [2019-05-23 11:14:42,689 INFO L146 ILogger]: Start accepts. Automaton has 652 states and 707 transitions. Word has length 199 [2019-05-23 11:14:42,690 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:42,690 INFO L146 ILogger]: Abstraction has 652 states and 707 transitions. [2019-05-23 11:14:42,690 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:14:42,690 INFO L146 ILogger]: Start isEmpty. Operand 652 states and 707 transitions. [2019-05-23 11:14:42,692 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 207 [2019-05-23 11:14:42,692 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:42,692 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 26, 26, 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 11:14:42,692 INFO L146 ILogger]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:42,693 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:42,693 INFO L146 ILogger]: Analyzing trace with hash 1461778876, now seen corresponding path program 26 times [2019-05-23 11:14:42,693 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:42,693 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:42,694 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:42,694 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:42,694 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:42,706 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:43,255 INFO L146 ILogger]: Checked inductivity of 2302 backedges. 1 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:43,256 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:43,256 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:43,266 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:43,326 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:43,326 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:43,327 INFO L146 ILogger]: Trace formula consists of 307 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:14:43,329 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:43,392 INFO L146 ILogger]: Checked inductivity of 2302 backedges. 1 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:43,410 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:43,410 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2019-05-23 11:14:43,410 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:14:43,411 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:14:43,411 INFO L146 ILogger]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:14:43,411 INFO L146 ILogger]: Start difference. First operand 652 states and 707 transitions. Second operand 30 states. [2019-05-23 11:14:43,794 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:43,794 INFO L146 ILogger]: Finished difference Result 1344 states and 1460 transitions. [2019-05-23 11:14:43,794 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:14:43,795 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 206 [2019-05-23 11:14:43,795 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:43,797 INFO L146 ILogger]: With dead ends: 1344 [2019-05-23 11:14:43,797 INFO L146 ILogger]: Without dead ends: 698 [2019-05-23 11:14:43,798 INFO L146 ILogger]: 0 DeclaredPredicates, 234 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:14:43,798 INFO L146 ILogger]: Start minimizeSevpa. Operand 698 states. [2019-05-23 11:14:43,805 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 698 to 676. [2019-05-23 11:14:43,805 INFO L146 ILogger]: Start removeUnreachable. Operand 676 states. [2019-05-23 11:14:43,806 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 676 states to 676 states and 733 transitions. [2019-05-23 11:14:43,807 INFO L146 ILogger]: Start accepts. Automaton has 676 states and 733 transitions. Word has length 206 [2019-05-23 11:14:43,807 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:43,807 INFO L146 ILogger]: Abstraction has 676 states and 733 transitions. [2019-05-23 11:14:43,807 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:14:43,807 INFO L146 ILogger]: Start isEmpty. Operand 676 states and 733 transitions. [2019-05-23 11:14:43,809 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 214 [2019-05-23 11:14:43,809 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:43,809 INFO L146 ILogger]: trace histogram [27, 27, 27, 27, 27, 27, 27, 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 11:14:43,810 INFO L146 ILogger]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:43,810 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:43,810 INFO L146 ILogger]: Analyzing trace with hash -402493098, now seen corresponding path program 27 times [2019-05-23 11:14:43,810 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:43,810 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:43,811 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:43,811 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:43,811 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:43,823 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:44,441 INFO L146 ILogger]: Checked inductivity of 2485 backedges. 1 proven. 2484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:44,441 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:44,441 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:44,462 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:44,622 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2019-05-23 11:14:44,623 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:44,624 INFO L146 ILogger]: Trace formula consists of 317 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:14:44,626 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:44,669 INFO L146 ILogger]: Checked inductivity of 2485 backedges. 1 proven. 2484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:44,688 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:44,688 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-05-23 11:14:44,688 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:14:44,689 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:14:44,689 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:14:44,689 INFO L146 ILogger]: Start difference. First operand 676 states and 733 transitions. Second operand 31 states. [2019-05-23 11:14:45,116 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:45,116 INFO L146 ILogger]: Finished difference Result 1392 states and 1512 transitions. [2019-05-23 11:14:45,116 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:14:45,117 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 213 [2019-05-23 11:14:45,117 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:45,120 INFO L146 ILogger]: With dead ends: 1392 [2019-05-23 11:14:45,120 INFO L146 ILogger]: Without dead ends: 722 [2019-05-23 11:14:45,121 INFO L146 ILogger]: 0 DeclaredPredicates, 242 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:14:45,122 INFO L146 ILogger]: Start minimizeSevpa. Operand 722 states. [2019-05-23 11:14:45,128 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 722 to 700. [2019-05-23 11:14:45,129 INFO L146 ILogger]: Start removeUnreachable. Operand 700 states. [2019-05-23 11:14:45,130 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 700 states to 700 states and 759 transitions. [2019-05-23 11:14:45,130 INFO L146 ILogger]: Start accepts. Automaton has 700 states and 759 transitions. Word has length 213 [2019-05-23 11:14:45,130 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:45,131 INFO L146 ILogger]: Abstraction has 700 states and 759 transitions. [2019-05-23 11:14:45,131 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:14:45,131 INFO L146 ILogger]: Start isEmpty. Operand 700 states and 759 transitions. [2019-05-23 11:14:45,133 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 221 [2019-05-23 11:14:45,133 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:45,133 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 28, 28, 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 11:14:45,133 INFO L146 ILogger]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:45,133 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:45,134 INFO L146 ILogger]: Analyzing trace with hash -246278020, now seen corresponding path program 28 times [2019-05-23 11:14:45,134 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:45,134 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:45,134 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:45,135 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:45,135 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:45,148 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:45,904 INFO L146 ILogger]: Checked inductivity of 2675 backedges. 1 proven. 2674 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:45,904 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:45,904 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:45,912 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:45,965 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:45,965 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:45,966 INFO L146 ILogger]: Trace formula consists of 327 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:14:45,969 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:46,050 INFO L146 ILogger]: Checked inductivity of 2675 backedges. 1 proven. 2674 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:46,068 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:46,069 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:14:46,069 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:14:46,069 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:14:46,070 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:14:46,070 INFO L146 ILogger]: Start difference. First operand 700 states and 759 transitions. Second operand 32 states. [2019-05-23 11:14:46,547 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:46,547 INFO L146 ILogger]: Finished difference Result 1440 states and 1564 transitions. [2019-05-23 11:14:46,547 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:14:46,547 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 220 [2019-05-23 11:14:46,548 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:46,550 INFO L146 ILogger]: With dead ends: 1440 [2019-05-23 11:14:46,551 INFO L146 ILogger]: Without dead ends: 746 [2019-05-23 11:14:46,552 INFO L146 ILogger]: 0 DeclaredPredicates, 250 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:14:46,552 INFO L146 ILogger]: Start minimizeSevpa. Operand 746 states. [2019-05-23 11:14:46,559 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 746 to 724. [2019-05-23 11:14:46,560 INFO L146 ILogger]: Start removeUnreachable. Operand 724 states. [2019-05-23 11:14:46,561 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 724 states to 724 states and 785 transitions. [2019-05-23 11:14:46,561 INFO L146 ILogger]: Start accepts. Automaton has 724 states and 785 transitions. Word has length 220 [2019-05-23 11:14:46,561 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:46,562 INFO L146 ILogger]: Abstraction has 724 states and 785 transitions. [2019-05-23 11:14:46,562 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:14:46,562 INFO L146 ILogger]: Start isEmpty. Operand 724 states and 785 transitions. [2019-05-23 11:14:46,564 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 228 [2019-05-23 11:14:46,564 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:46,564 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 29, 29, 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 11:14:46,564 INFO L146 ILogger]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:46,564 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:46,565 INFO L146 ILogger]: Analyzing trace with hash -254461290, now seen corresponding path program 29 times [2019-05-23 11:14:46,565 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:46,565 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:46,565 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:46,566 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:46,566 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:46,578 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:47,473 INFO L146 ILogger]: Checked inductivity of 2872 backedges. 1 proven. 2871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:47,473 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:47,473 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:47,482 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:47,607 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-05-23 11:14:47,607 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:47,609 INFO L146 ILogger]: Trace formula consists of 298 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:14:47,613 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:47,755 INFO L146 ILogger]: Checked inductivity of 2872 backedges. 1 proven. 2871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:47,774 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:47,774 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:14:47,775 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:14:47,775 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:14:47,775 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:14:47,776 INFO L146 ILogger]: Start difference. First operand 724 states and 785 transitions. Second operand 33 states. [2019-05-23 11:14:48,343 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:48,343 INFO L146 ILogger]: Finished difference Result 1488 states and 1616 transitions. [2019-05-23 11:14:48,344 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:14:48,344 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 227 [2019-05-23 11:14:48,344 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:48,346 INFO L146 ILogger]: With dead ends: 1488 [2019-05-23 11:14:48,346 INFO L146 ILogger]: Without dead ends: 770 [2019-05-23 11:14:48,348 INFO L146 ILogger]: 0 DeclaredPredicates, 258 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:14:48,348 INFO L146 ILogger]: Start minimizeSevpa. Operand 770 states. [2019-05-23 11:14:48,354 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 770 to 748. [2019-05-23 11:14:48,354 INFO L146 ILogger]: Start removeUnreachable. Operand 748 states. [2019-05-23 11:14:48,356 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 748 states to 748 states and 811 transitions. [2019-05-23 11:14:48,356 INFO L146 ILogger]: Start accepts. Automaton has 748 states and 811 transitions. Word has length 227 [2019-05-23 11:14:48,356 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:48,356 INFO L146 ILogger]: Abstraction has 748 states and 811 transitions. [2019-05-23 11:14:48,356 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:14:48,357 INFO L146 ILogger]: Start isEmpty. Operand 748 states and 811 transitions. [2019-05-23 11:14:48,358 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 235 [2019-05-23 11:14:48,359 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:48,359 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 30, 30, 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 11:14:48,359 INFO L146 ILogger]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:48,359 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:48,359 INFO L146 ILogger]: Analyzing trace with hash 2093377340, now seen corresponding path program 30 times [2019-05-23 11:14:48,360 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:48,360 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:48,360 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:48,361 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:48,361 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:48,374 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:48,868 INFO L146 ILogger]: Checked inductivity of 3076 backedges. 1 proven. 3075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:48,868 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:48,868 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:48,877 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:48,970 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2019-05-23 11:14:48,970 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:48,972 INFO L146 ILogger]: Trace formula consists of 347 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:14:48,974 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:49,035 INFO L146 ILogger]: Checked inductivity of 3076 backedges. 1 proven. 3075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:49,054 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:49,054 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2019-05-23 11:14:49,054 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:14:49,055 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:14:49,055 INFO L146 ILogger]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:14:49,055 INFO L146 ILogger]: Start difference. First operand 748 states and 811 transitions. Second operand 34 states. [2019-05-23 11:14:49,492 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:49,492 INFO L146 ILogger]: Finished difference Result 1536 states and 1668 transitions. [2019-05-23 11:14:49,493 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:14:49,493 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 234 [2019-05-23 11:14:49,493 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:49,495 INFO L146 ILogger]: With dead ends: 1536 [2019-05-23 11:14:49,495 INFO L146 ILogger]: Without dead ends: 794 [2019-05-23 11:14:49,496 INFO L146 ILogger]: 0 DeclaredPredicates, 266 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:14:49,497 INFO L146 ILogger]: Start minimizeSevpa. Operand 794 states. [2019-05-23 11:14:49,502 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 794 to 772. [2019-05-23 11:14:49,503 INFO L146 ILogger]: Start removeUnreachable. Operand 772 states. [2019-05-23 11:14:49,504 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 772 states to 772 states and 837 transitions. [2019-05-23 11:14:49,504 INFO L146 ILogger]: Start accepts. Automaton has 772 states and 837 transitions. Word has length 234 [2019-05-23 11:14:49,504 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:49,504 INFO L146 ILogger]: Abstraction has 772 states and 837 transitions. [2019-05-23 11:14:49,505 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:14:49,505 INFO L146 ILogger]: Start isEmpty. Operand 772 states and 837 transitions. [2019-05-23 11:14:49,507 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 242 [2019-05-23 11:14:49,507 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:49,507 INFO L146 ILogger]: trace histogram [31, 31, 31, 31, 31, 31, 31, 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 11:14:49,507 INFO L146 ILogger]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:49,507 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:49,508 INFO L146 ILogger]: Analyzing trace with hash -546384938, now seen corresponding path program 31 times [2019-05-23 11:14:49,508 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:49,508 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:49,509 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:49,509 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:49,509 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:49,523 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:50,097 INFO L146 ILogger]: Checked inductivity of 3287 backedges. 1 proven. 3286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:50,097 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:50,098 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:50,106 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:50,155 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:50,156 INFO L146 ILogger]: Trace formula consists of 357 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:14:50,158 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:50,215 INFO L146 ILogger]: Checked inductivity of 3287 backedges. 1 proven. 3286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:50,233 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:50,234 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2019-05-23 11:14:50,234 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:14:50,234 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:14:50,235 INFO L146 ILogger]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:14:50,235 INFO L146 ILogger]: Start difference. First operand 772 states and 837 transitions. Second operand 35 states. [2019-05-23 11:14:51,429 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:51,429 INFO L146 ILogger]: Finished difference Result 1584 states and 1720 transitions. [2019-05-23 11:14:51,431 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:14:51,431 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 241 [2019-05-23 11:14:51,431 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:51,434 INFO L146 ILogger]: With dead ends: 1584 [2019-05-23 11:14:51,434 INFO L146 ILogger]: Without dead ends: 818 [2019-05-23 11:14:51,435 INFO L146 ILogger]: 0 DeclaredPredicates, 274 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:14:51,435 INFO L146 ILogger]: Start minimizeSevpa. Operand 818 states. [2019-05-23 11:14:51,441 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 818 to 796. [2019-05-23 11:14:51,441 INFO L146 ILogger]: Start removeUnreachable. Operand 796 states. [2019-05-23 11:14:51,442 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 796 states to 796 states and 863 transitions. [2019-05-23 11:14:51,442 INFO L146 ILogger]: Start accepts. Automaton has 796 states and 863 transitions. Word has length 241 [2019-05-23 11:14:51,442 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:51,442 INFO L146 ILogger]: Abstraction has 796 states and 863 transitions. [2019-05-23 11:14:51,442 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:14:51,442 INFO L146 ILogger]: Start isEmpty. Operand 796 states and 863 transitions. [2019-05-23 11:14:51,444 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 249 [2019-05-23 11:14:51,444 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:51,445 INFO L146 ILogger]: trace histogram [32, 32, 32, 32, 32, 32, 32, 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 11:14:51,445 INFO L146 ILogger]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:51,445 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:51,445 INFO L146 ILogger]: Analyzing trace with hash 740943356, now seen corresponding path program 32 times [2019-05-23 11:14:51,445 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:51,445 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:51,446 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:51,446 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:51,446 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:51,461 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:52,101 INFO L146 ILogger]: Checked inductivity of 3505 backedges. 1 proven. 3504 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:52,101 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:52,101 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:52,109 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:52,163 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:52,163 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:52,164 INFO L146 ILogger]: Trace formula consists of 367 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:14:52,167 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:52,246 INFO L146 ILogger]: Checked inductivity of 3505 backedges. 1 proven. 3504 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:52,295 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:52,295 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2019-05-23 11:14:52,296 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:14:52,296 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:14:52,297 INFO L146 ILogger]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:14:52,297 INFO L146 ILogger]: Start difference. First operand 796 states and 863 transitions. Second operand 36 states. [2019-05-23 11:14:53,399 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:53,400 INFO L146 ILogger]: Finished difference Result 1632 states and 1772 transitions. [2019-05-23 11:14:53,400 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:14:53,400 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 248 [2019-05-23 11:14:53,400 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:53,403 INFO L146 ILogger]: With dead ends: 1632 [2019-05-23 11:14:53,404 INFO L146 ILogger]: Without dead ends: 842 [2019-05-23 11:14:53,405 INFO L146 ILogger]: 0 DeclaredPredicates, 282 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:14:53,405 INFO L146 ILogger]: Start minimizeSevpa. Operand 842 states. [2019-05-23 11:14:53,411 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 842 to 820. [2019-05-23 11:14:53,411 INFO L146 ILogger]: Start removeUnreachable. Operand 820 states. [2019-05-23 11:14:53,413 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 820 states to 820 states and 889 transitions. [2019-05-23 11:14:53,413 INFO L146 ILogger]: Start accepts. Automaton has 820 states and 889 transitions. Word has length 248 [2019-05-23 11:14:53,413 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:53,413 INFO L146 ILogger]: Abstraction has 820 states and 889 transitions. [2019-05-23 11:14:53,413 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:14:53,413 INFO L146 ILogger]: Start isEmpty. Operand 820 states and 889 transitions. [2019-05-23 11:14:53,415 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 256 [2019-05-23 11:14:53,415 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:53,415 INFO L146 ILogger]: trace histogram [33, 33, 33, 33, 33, 33, 33, 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 11:14:53,416 INFO L146 ILogger]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:53,416 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:53,416 INFO L146 ILogger]: Analyzing trace with hash 1738751254, now seen corresponding path program 33 times [2019-05-23 11:14:53,416 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:53,416 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:53,417 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:53,417 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:53,417 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:53,432 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:54,298 INFO L146 ILogger]: Checked inductivity of 3730 backedges. 1 proven. 3729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:54,299 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:54,299 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:54,307 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:54,435 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2019-05-23 11:14:54,435 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:54,436 INFO L146 ILogger]: Trace formula consists of 377 conjuncts, 35 conjunts are in the unsatisfiable core [2019-05-23 11:14:54,439 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:54,550 INFO L146 ILogger]: Checked inductivity of 3730 backedges. 1 proven. 3729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:54,569 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:54,569 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2019-05-23 11:14:54,569 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:14:54,569 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:14:54,570 INFO L146 ILogger]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:14:54,570 INFO L146 ILogger]: Start difference. First operand 820 states and 889 transitions. Second operand 37 states. [2019-05-23 11:14:55,153 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:55,154 INFO L146 ILogger]: Finished difference Result 1680 states and 1824 transitions. [2019-05-23 11:14:55,154 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:14:55,154 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 255 [2019-05-23 11:14:55,154 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:55,157 INFO L146 ILogger]: With dead ends: 1680 [2019-05-23 11:14:55,157 INFO L146 ILogger]: Without dead ends: 866 [2019-05-23 11:14:55,158 INFO L146 ILogger]: 0 DeclaredPredicates, 290 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:14:55,159 INFO L146 ILogger]: Start minimizeSevpa. Operand 866 states. [2019-05-23 11:14:55,166 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 866 to 844. [2019-05-23 11:14:55,167 INFO L146 ILogger]: Start removeUnreachable. Operand 844 states. [2019-05-23 11:14:55,168 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 844 states to 844 states and 915 transitions. [2019-05-23 11:14:55,168 INFO L146 ILogger]: Start accepts. Automaton has 844 states and 915 transitions. Word has length 255 [2019-05-23 11:14:55,168 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:55,168 INFO L146 ILogger]: Abstraction has 844 states and 915 transitions. [2019-05-23 11:14:55,168 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:14:55,169 INFO L146 ILogger]: Start isEmpty. Operand 844 states and 915 transitions. [2019-05-23 11:14:55,170 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 263 [2019-05-23 11:14:55,170 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:55,170 INFO L146 ILogger]: trace histogram [34, 34, 34, 34, 34, 34, 34, 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 11:14:55,170 INFO L146 ILogger]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:55,170 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:55,171 INFO L146 ILogger]: Analyzing trace with hash 354981052, now seen corresponding path program 34 times [2019-05-23 11:14:55,171 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:55,171 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:55,171 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:55,172 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:55,172 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:55,186 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:55,821 INFO L146 ILogger]: Checked inductivity of 3962 backedges. 1 proven. 3961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:55,822 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:55,822 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:55,831 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:55,908 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:55,908 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:55,910 INFO L146 ILogger]: Trace formula consists of 387 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:14:55,913 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:55,989 INFO L146 ILogger]: Checked inductivity of 3962 backedges. 1 proven. 3961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:56,017 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:56,018 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2019-05-23 11:14:56,018 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:14:56,019 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:14:56,019 INFO L146 ILogger]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:14:56,020 INFO L146 ILogger]: Start difference. First operand 844 states and 915 transitions. Second operand 38 states. [2019-05-23 11:14:56,644 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:56,644 INFO L146 ILogger]: Finished difference Result 1728 states and 1876 transitions. [2019-05-23 11:14:56,645 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:14:56,645 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 262 [2019-05-23 11:14:56,645 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:56,647 INFO L146 ILogger]: With dead ends: 1728 [2019-05-23 11:14:56,648 INFO L146 ILogger]: Without dead ends: 890 [2019-05-23 11:14:56,649 INFO L146 ILogger]: 0 DeclaredPredicates, 298 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:14:56,649 INFO L146 ILogger]: Start minimizeSevpa. Operand 890 states. [2019-05-23 11:14:56,654 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 890 to 868. [2019-05-23 11:14:56,654 INFO L146 ILogger]: Start removeUnreachable. Operand 868 states. [2019-05-23 11:14:56,655 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 868 states to 868 states and 941 transitions. [2019-05-23 11:14:56,656 INFO L146 ILogger]: Start accepts. Automaton has 868 states and 941 transitions. Word has length 262 [2019-05-23 11:14:56,656 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:56,656 INFO L146 ILogger]: Abstraction has 868 states and 941 transitions. [2019-05-23 11:14:56,656 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:14:56,656 INFO L146 ILogger]: Start isEmpty. Operand 868 states and 941 transitions. [2019-05-23 11:14:56,658 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 270 [2019-05-23 11:14:56,658 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:56,658 INFO L146 ILogger]: trace histogram [35, 35, 35, 35, 35, 35, 35, 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 11:14:56,658 INFO L146 ILogger]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:56,658 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:56,659 INFO L146 ILogger]: Analyzing trace with hash -96045482, now seen corresponding path program 35 times [2019-05-23 11:14:56,659 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:56,659 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:56,659 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:56,660 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:56,660 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:56,674 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,353 INFO L146 ILogger]: Checked inductivity of 4201 backedges. 1 proven. 4200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:57,353 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:57,354 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:57,370 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:57,567 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2019-05-23 11:14:57,568 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:57,569 INFO L146 ILogger]: Trace formula consists of 358 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:14:57,571 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:57,628 INFO L146 ILogger]: Checked inductivity of 4201 backedges. 1 proven. 4200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:57,646 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:57,646 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2019-05-23 11:14:57,646 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:14:57,646 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:14:57,647 INFO L146 ILogger]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:14:57,647 INFO L146 ILogger]: Start difference. First operand 868 states and 941 transitions. Second operand 39 states. [2019-05-23 11:14:58,319 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:58,319 INFO L146 ILogger]: Finished difference Result 1776 states and 1928 transitions. [2019-05-23 11:14:58,320 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:14:58,320 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 269 [2019-05-23 11:14:58,320 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:58,323 INFO L146 ILogger]: With dead ends: 1776 [2019-05-23 11:14:58,323 INFO L146 ILogger]: Without dead ends: 914 [2019-05-23 11:14:58,325 INFO L146 ILogger]: 0 DeclaredPredicates, 306 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:14:58,326 INFO L146 ILogger]: Start minimizeSevpa. Operand 914 states. [2019-05-23 11:14:58,332 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 914 to 892. [2019-05-23 11:14:58,332 INFO L146 ILogger]: Start removeUnreachable. Operand 892 states. [2019-05-23 11:14:58,333 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 892 states to 892 states and 967 transitions. [2019-05-23 11:14:58,333 INFO L146 ILogger]: Start accepts. Automaton has 892 states and 967 transitions. Word has length 269 [2019-05-23 11:14:58,333 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:58,333 INFO L146 ILogger]: Abstraction has 892 states and 967 transitions. [2019-05-23 11:14:58,333 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:14:58,334 INFO L146 ILogger]: Start isEmpty. Operand 892 states and 967 transitions. [2019-05-23 11:14:58,335 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 277 [2019-05-23 11:14:58,335 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:58,335 INFO L146 ILogger]: trace histogram [36, 36, 36, 36, 36, 36, 36, 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 11:14:58,335 INFO L146 ILogger]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:58,335 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:58,336 INFO L146 ILogger]: Analyzing trace with hash -261196932, now seen corresponding path program 36 times [2019-05-23 11:14:58,336 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:58,336 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:58,336 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:58,336 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:58,337 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:58,353 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:59,157 INFO L146 ILogger]: Checked inductivity of 4447 backedges. 1 proven. 4446 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:59,157 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:59,158 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:14:59,178 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:59,473 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2019-05-23 11:14:59,473 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:59,475 INFO L146 ILogger]: Trace formula consists of 407 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:14:59,478 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:59,610 INFO L146 ILogger]: Checked inductivity of 4447 backedges. 1 proven. 4446 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:59,642 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:59,642 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2019-05-23 11:14:59,643 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:14:59,643 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:14:59,644 INFO L146 ILogger]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:14:59,644 INFO L146 ILogger]: Start difference. First operand 892 states and 967 transitions. Second operand 40 states. [2019-05-23 11:15:01,108 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:01,109 INFO L146 ILogger]: Finished difference Result 1824 states and 1980 transitions. [2019-05-23 11:15:01,109 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:15:01,109 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 276 [2019-05-23 11:15:01,109 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:01,112 INFO L146 ILogger]: With dead ends: 1824 [2019-05-23 11:15:01,112 INFO L146 ILogger]: Without dead ends: 938 [2019-05-23 11:15:01,114 INFO L146 ILogger]: 0 DeclaredPredicates, 314 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:15:01,115 INFO L146 ILogger]: Start minimizeSevpa. Operand 938 states. [2019-05-23 11:15:01,122 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 938 to 916. [2019-05-23 11:15:01,122 INFO L146 ILogger]: Start removeUnreachable. Operand 916 states. [2019-05-23 11:15:01,124 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 916 states to 916 states and 993 transitions. [2019-05-23 11:15:01,124 INFO L146 ILogger]: Start accepts. Automaton has 916 states and 993 transitions. Word has length 276 [2019-05-23 11:15:01,124 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:01,124 INFO L146 ILogger]: Abstraction has 916 states and 993 transitions. [2019-05-23 11:15:01,124 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:15:01,124 INFO L146 ILogger]: Start isEmpty. Operand 916 states and 993 transitions. [2019-05-23 11:15:01,126 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 284 [2019-05-23 11:15:01,126 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:01,127 INFO L146 ILogger]: trace histogram [37, 37, 37, 37, 37, 37, 37, 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 11:15:01,127 INFO L146 ILogger]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:01,127 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:01,127 INFO L146 ILogger]: Analyzing trace with hash 86802326, now seen corresponding path program 37 times [2019-05-23 11:15:01,128 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:01,128 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:01,128 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:01,128 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:01,129 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:01,143 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:01,963 INFO L146 ILogger]: Checked inductivity of 4700 backedges. 1 proven. 4699 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:01,964 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:01,964 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:01,972 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:02,031 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:02,033 INFO L146 ILogger]: Trace formula consists of 417 conjuncts, 39 conjunts are in the unsatisfiable core [2019-05-23 11:15:02,036 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:02,194 INFO L146 ILogger]: Checked inductivity of 4700 backedges. 1 proven. 4699 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:02,212 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:02,212 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2019-05-23 11:15:02,212 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:15:02,213 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:15:02,213 INFO L146 ILogger]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:15:02,213 INFO L146 ILogger]: Start difference. First operand 916 states and 993 transitions. Second operand 41 states. [2019-05-23 11:15:02,910 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:02,910 INFO L146 ILogger]: Finished difference Result 1872 states and 2032 transitions. [2019-05-23 11:15:02,910 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:15:02,911 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 283 [2019-05-23 11:15:02,911 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:02,914 INFO L146 ILogger]: With dead ends: 1872 [2019-05-23 11:15:02,914 INFO L146 ILogger]: Without dead ends: 962 [2019-05-23 11:15:02,916 INFO L146 ILogger]: 0 DeclaredPredicates, 322 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:15:02,917 INFO L146 ILogger]: Start minimizeSevpa. Operand 962 states. [2019-05-23 11:15:02,925 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 962 to 940. [2019-05-23 11:15:02,925 INFO L146 ILogger]: Start removeUnreachable. Operand 940 states. [2019-05-23 11:15:02,926 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1019 transitions. [2019-05-23 11:15:02,926 INFO L146 ILogger]: Start accepts. Automaton has 940 states and 1019 transitions. Word has length 283 [2019-05-23 11:15:02,927 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:02,927 INFO L146 ILogger]: Abstraction has 940 states and 1019 transitions. [2019-05-23 11:15:02,927 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:15:02,927 INFO L146 ILogger]: Start isEmpty. Operand 940 states and 1019 transitions. [2019-05-23 11:15:02,928 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 291 [2019-05-23 11:15:02,928 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:02,928 INFO L146 ILogger]: trace histogram [38, 38, 38, 38, 38, 38, 38, 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 11:15:02,929 INFO L146 ILogger]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:02,929 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:02,929 INFO L146 ILogger]: Analyzing trace with hash -643333572, now seen corresponding path program 38 times [2019-05-23 11:15:02,929 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:02,929 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:02,930 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:02,930 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:02,930 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:02,958 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:04,787 INFO L146 ILogger]: Checked inductivity of 4960 backedges. 1 proven. 4959 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:04,787 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:04,787 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:04,795 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:04,854 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:04,855 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:04,856 INFO L146 ILogger]: Trace formula consists of 427 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:15:04,858 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:04,965 INFO L146 ILogger]: Checked inductivity of 4960 backedges. 1 proven. 4959 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:04,994 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:04,994 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2019-05-23 11:15:04,995 INFO L146 ILogger]: Interpolant automaton has 42 states [2019-05-23 11:15:04,995 INFO L146 ILogger]: Constructing interpolant automaton starting with 42 interpolants. [2019-05-23 11:15:04,996 INFO L146 ILogger]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:15:04,996 INFO L146 ILogger]: Start difference. First operand 940 states and 1019 transitions. Second operand 42 states. [2019-05-23 11:15:05,708 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:05,709 INFO L146 ILogger]: Finished difference Result 1920 states and 2084 transitions. [2019-05-23 11:15:05,709 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-05-23 11:15:05,709 INFO L146 ILogger]: Start accepts. Automaton has 42 states. Word has length 290 [2019-05-23 11:15:05,709 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:05,713 INFO L146 ILogger]: With dead ends: 1920 [2019-05-23 11:15:05,713 INFO L146 ILogger]: Without dead ends: 986 [2019-05-23 11:15:05,715 INFO L146 ILogger]: 0 DeclaredPredicates, 330 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:15:05,716 INFO L146 ILogger]: Start minimizeSevpa. Operand 986 states. [2019-05-23 11:15:05,725 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 986 to 964. [2019-05-23 11:15:05,725 INFO L146 ILogger]: Start removeUnreachable. Operand 964 states. [2019-05-23 11:15:05,727 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1045 transitions. [2019-05-23 11:15:05,727 INFO L146 ILogger]: Start accepts. Automaton has 964 states and 1045 transitions. Word has length 290 [2019-05-23 11:15:05,727 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:05,727 INFO L146 ILogger]: Abstraction has 964 states and 1045 transitions. [2019-05-23 11:15:05,727 INFO L146 ILogger]: Interpolant automaton has 42 states. [2019-05-23 11:15:05,727 INFO L146 ILogger]: Start isEmpty. Operand 964 states and 1045 transitions. [2019-05-23 11:15:05,729 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 298 [2019-05-23 11:15:05,729 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:05,730 INFO L146 ILogger]: trace histogram [39, 39, 39, 39, 39, 39, 39, 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 11:15:05,730 INFO L146 ILogger]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:05,730 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:05,730 INFO L146 ILogger]: Analyzing trace with hash 858347734, now seen corresponding path program 39 times [2019-05-23 11:15:05,730 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:05,731 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:05,731 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:05,731 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:05,731 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:05,746 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:06,513 INFO L146 ILogger]: Checked inductivity of 5227 backedges. 1 proven. 5226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:06,514 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:06,514 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:06,523 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:06,696 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2019-05-23 11:15:06,696 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:06,698 INFO L146 ILogger]: Trace formula consists of 437 conjuncts, 41 conjunts are in the unsatisfiable core [2019-05-23 11:15:06,700 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:06,776 INFO L146 ILogger]: Checked inductivity of 5227 backedges. 1 proven. 5226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:06,795 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:06,795 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2019-05-23 11:15:06,796 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:15:06,796 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:15:06,796 INFO L146 ILogger]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:15:06,797 INFO L146 ILogger]: Start difference. First operand 964 states and 1045 transitions. Second operand 43 states. [2019-05-23 11:15:07,458 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:07,458 INFO L146 ILogger]: Finished difference Result 1968 states and 2136 transitions. [2019-05-23 11:15:07,459 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:15:07,459 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 297 [2019-05-23 11:15:07,460 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:07,462 INFO L146 ILogger]: With dead ends: 1968 [2019-05-23 11:15:07,462 INFO L146 ILogger]: Without dead ends: 1010 [2019-05-23 11:15:07,464 INFO L146 ILogger]: 0 DeclaredPredicates, 338 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:15:07,464 INFO L146 ILogger]: Start minimizeSevpa. Operand 1010 states. [2019-05-23 11:15:07,470 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1010 to 988. [2019-05-23 11:15:07,470 INFO L146 ILogger]: Start removeUnreachable. Operand 988 states. [2019-05-23 11:15:07,472 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1071 transitions. [2019-05-23 11:15:07,472 INFO L146 ILogger]: Start accepts. Automaton has 988 states and 1071 transitions. Word has length 297 [2019-05-23 11:15:07,472 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:07,472 INFO L146 ILogger]: Abstraction has 988 states and 1071 transitions. [2019-05-23 11:15:07,472 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:15:07,472 INFO L146 ILogger]: Start isEmpty. Operand 988 states and 1071 transitions. [2019-05-23 11:15:07,474 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 305 [2019-05-23 11:15:07,475 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:07,475 INFO L146 ILogger]: trace histogram [40, 40, 40, 40, 40, 40, 40, 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 11:15:07,475 INFO L146 ILogger]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:07,475 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:07,475 INFO L146 ILogger]: Analyzing trace with hash 260030716, now seen corresponding path program 40 times [2019-05-23 11:15:07,475 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:07,476 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:07,476 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:07,476 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:07,476 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:07,489 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:08,679 INFO L146 ILogger]: Checked inductivity of 5501 backedges. 1 proven. 5500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:08,680 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:08,680 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:08,688 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:08,754 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:08,754 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:08,756 INFO L146 ILogger]: Trace formula consists of 447 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:15:08,760 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:08,910 INFO L146 ILogger]: Checked inductivity of 5501 backedges. 1 proven. 5500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:08,940 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:08,940 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2019-05-23 11:15:08,941 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:15:08,941 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:15:08,942 INFO L146 ILogger]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:15:08,942 INFO L146 ILogger]: Start difference. First operand 988 states and 1071 transitions. Second operand 44 states. [2019-05-23 11:15:09,773 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:09,774 INFO L146 ILogger]: Finished difference Result 2016 states and 2188 transitions. [2019-05-23 11:15:09,774 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:15:09,774 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 304 [2019-05-23 11:15:09,774 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:09,777 INFO L146 ILogger]: With dead ends: 2016 [2019-05-23 11:15:09,777 INFO L146 ILogger]: Without dead ends: 1034 [2019-05-23 11:15:09,778 INFO L146 ILogger]: 0 DeclaredPredicates, 346 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:15:09,779 INFO L146 ILogger]: Start minimizeSevpa. Operand 1034 states. [2019-05-23 11:15:09,785 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1034 to 1012. [2019-05-23 11:15:09,785 INFO L146 ILogger]: Start removeUnreachable. Operand 1012 states. [2019-05-23 11:15:09,786 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1097 transitions. [2019-05-23 11:15:09,786 INFO L146 ILogger]: Start accepts. Automaton has 1012 states and 1097 transitions. Word has length 304 [2019-05-23 11:15:09,786 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:09,786 INFO L146 ILogger]: Abstraction has 1012 states and 1097 transitions. [2019-05-23 11:15:09,786 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:15:09,787 INFO L146 ILogger]: Start isEmpty. Operand 1012 states and 1097 transitions. [2019-05-23 11:15:09,788 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 312 [2019-05-23 11:15:09,788 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:09,788 INFO L146 ILogger]: trace histogram [41, 41, 41, 41, 41, 41, 41, 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 11:15:09,788 INFO L146 ILogger]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:09,788 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:09,789 INFO L146 ILogger]: Analyzing trace with hash -1408171498, now seen corresponding path program 41 times [2019-05-23 11:15:09,789 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:09,789 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:09,789 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:09,789 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:09,790 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:09,802 INFO L146 ILogger]: Conjunction of SSA is unsat