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/standard_minInArray_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:15:30,393 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:15:30,395 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:15:30,413 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:15:30,413 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:15:30,415 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:15:30,417 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:15:30,419 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:15:30,421 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:15:30,422 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:15:30,424 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:15:30,424 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:15:30,425 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:15:30,428 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:15:30,438 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:15:30,439 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:15:30,442 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:15:30,444 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:15:30,449 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:15:30,451 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:15:30,452 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:15:30,457 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:15:30,460 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:15:30,462 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:15:30,462 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:15:30,463 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:15:30,464 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:15:30,465 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:15:30,465 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:15:30,467 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:15:30,468 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:15:30,468 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:15:30,469 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:15:30,470 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:15:30,470 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:15:30,471 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:15:30,473 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:15:30,475 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:15:30,476 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:15:30,476 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:15:30,490 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:15:30,491 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:15:30,492 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:15:30,492 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:15:30,492 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:15:30,493 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:15:30,493 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:15:30,493 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:15:30,493 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:15:30,494 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:15:30,494 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:15:30,494 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:15:30,494 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:15:30,494 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:15:30,495 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:15:30,495 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:15:30,495 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:15:30,495 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:15:30,495 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:15:30,496 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:15:30,496 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:15:30,496 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:15:30,496 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:15:30,496 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:15:30,497 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:15:30,497 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:15:30,497 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:15:30,497 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:15:30,498 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 11:15:30,530 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:15:30,544 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:15:30,548 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:15:30,550 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:15:30,551 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:15:30,551 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_minInArray_false-unreach-call_ground.i [2019-05-23 11:15:30,606 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/686c8d9db/441c17d366454ba9828fab803a098ce3/FLAG41906c867 [2019-05-23 11:15:31,063 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:15:31,064 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_minInArray_false-unreach-call_ground.i [2019-05-23 11:15:31,073 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/686c8d9db/441c17d366454ba9828fab803a098ce3/FLAG41906c867 [2019-05-23 11:15:31,392 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/686c8d9db/441c17d366454ba9828fab803a098ce3 [2019-05-23 11:15:31,403 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:15:31,405 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:15:31,406 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:31,406 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:15:31,410 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:15:31,412 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,415 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1a5772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31, skipping insertion in model container [2019-05-23 11:15:31,416 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,423 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:15:31,440 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:15:31,671 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:31,676 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:15:31,703 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:31,730 INFO L146 ILogger]: Completed translation [2019-05-23 11:15:31,731 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31 WrapperNode [2019-05-23 11:15:31,731 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:31,733 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:31,733 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:15:31,733 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:15:31,742 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,751 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,776 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:31,777 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:15:31,777 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:15:31,777 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:15:31,787 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,787 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,789 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,789 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,794 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,799 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,800 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,802 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:15:31,803 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:15:31,803 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:15:31,803 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:15:31,804 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (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 11:15:31,964 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:15:31,964 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:15:31,964 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:15:31,964 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:15:31,965 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:15:32,368 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:15:32,368 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:15:32,369 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:32 BoogieIcfgContainer [2019-05-23 11:15:32,370 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:15:32,371 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:15:32,371 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:15:32,374 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:15:32,374 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:15:31" (1/3) ... [2019-05-23 11:15:32,375 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20072230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:32, skipping insertion in model container [2019-05-23 11:15:32,375 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (2/3) ... [2019-05-23 11:15:32,376 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20072230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:32, skipping insertion in model container [2019-05-23 11:15:32,376 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:32" (3/3) ... [2019-05-23 11:15:32,377 INFO L146 ILogger]: Analyzing ICFG standard_minInArray_false-unreach-call_ground.i [2019-05-23 11:15:32,387 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:15:32,394 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:15:32,411 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:15:32,444 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:15:32,445 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:15:32,445 INFO L146 ILogger]: Hoare is true [2019-05-23 11:15:32,445 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:15:32,445 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:15:32,445 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:15:32,446 INFO L146 ILogger]: Difference is false [2019-05-23 11:15:32,446 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:15:32,446 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:15:32,459 INFO L146 ILogger]: Start isEmpty. Operand 36 states. [2019-05-23 11:15:32,467 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 18 [2019-05-23 11:15:32,468 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,469 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:32,471 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,475 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,476 INFO L146 ILogger]: Analyzing trace with hash 1653394114, now seen corresponding path program 1 times [2019-05-23 11:15:32,477 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,477 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,519 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,520 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,520 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,565 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,652 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 11:15:32,654 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:32,655 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:15:32,658 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:15:32,670 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:15:32,670 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:32,672 INFO L146 ILogger]: Start difference. First operand 36 states. Second operand 3 states. [2019-05-23 11:15:32,744 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:32,745 INFO L146 ILogger]: Finished difference Result 65 states and 75 transitions. [2019-05-23 11:15:32,745 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:15:32,747 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 17 [2019-05-23 11:15:32,747 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:32,756 INFO L146 ILogger]: With dead ends: 65 [2019-05-23 11:15:32,756 INFO L146 ILogger]: Without dead ends: 39 [2019-05-23 11:15:32,760 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 11:15:32,778 INFO L146 ILogger]: Start minimizeSevpa. Operand 39 states. [2019-05-23 11:15:32,794 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 39 to 31. [2019-05-23 11:15:32,795 INFO L146 ILogger]: Start removeUnreachable. Operand 31 states. [2019-05-23 11:15:32,796 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2019-05-23 11:15:32,798 INFO L146 ILogger]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2019-05-23 11:15:32,798 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:32,798 INFO L146 ILogger]: Abstraction has 31 states and 33 transitions. [2019-05-23 11:15:32,799 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:15:32,799 INFO L146 ILogger]: Start isEmpty. Operand 31 states and 33 transitions. [2019-05-23 11:15:32,799 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:15:32,799 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,800 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] [2019-05-23 11:15:32,802 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,802 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,803 INFO L146 ILogger]: Analyzing trace with hash -319460425, now seen corresponding path program 1 times [2019-05-23 11:15:32,803 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,803 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,807 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,839 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,886 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:32,887 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:32,887 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 11:15:32,906 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,935 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,937 INFO L146 ILogger]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:15:32,943 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:32,968 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:32,989 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:32,989 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:15:32,990 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:15:32,990 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:15:32,991 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:32,991 INFO L146 ILogger]: Start difference. First operand 31 states and 33 transitions. Second operand 5 states. [2019-05-23 11:15:33,139 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:33,139 INFO L146 ILogger]: Finished difference Result 62 states and 67 transitions. [2019-05-23 11:15:33,140 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:15:33,140 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 22 [2019-05-23 11:15:33,141 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:33,142 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:15:33,142 INFO L146 ILogger]: Without dead ends: 48 [2019-05-23 11:15:33,143 INFO L146 ILogger]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:33,144 INFO L146 ILogger]: Start minimizeSevpa. Operand 48 states. [2019-05-23 11:15:33,148 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 48 to 40. [2019-05-23 11:15:33,149 INFO L146 ILogger]: Start removeUnreachable. Operand 40 states. [2019-05-23 11:15:33,150 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2019-05-23 11:15:33,150 INFO L146 ILogger]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 22 [2019-05-23 11:15:33,151 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:33,151 INFO L146 ILogger]: Abstraction has 40 states and 43 transitions. [2019-05-23 11:15:33,151 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:15:33,151 INFO L146 ILogger]: Start isEmpty. Operand 40 states and 43 transitions. [2019-05-23 11:15:33,152 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:15:33,153 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:33,153 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:33,153 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:33,153 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:33,154 INFO L146 ILogger]: Analyzing trace with hash 1292114914, now seen corresponding path program 2 times [2019-05-23 11:15:33,154 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:33,154 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:33,156 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,156 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:33,156 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,180 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,439 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:33,440 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:33,440 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 11:15:33,455 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:33,484 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:33,484 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,486 INFO L146 ILogger]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:15:33,488 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:33,545 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:33,574 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:33,574 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:15:33,575 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:15:33,575 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:15:33,576 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:33,576 INFO L146 ILogger]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2019-05-23 11:15:33,652 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:33,653 INFO L146 ILogger]: Finished difference Result 71 states and 77 transitions. [2019-05-23 11:15:33,654 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:15:33,654 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 27 [2019-05-23 11:15:33,654 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:33,655 INFO L146 ILogger]: With dead ends: 71 [2019-05-23 11:15:33,655 INFO L146 ILogger]: Without dead ends: 57 [2019-05-23 11:15:33,656 INFO L146 ILogger]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:33,656 INFO L146 ILogger]: Start minimizeSevpa. Operand 57 states. [2019-05-23 11:15:33,661 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 57 to 49. [2019-05-23 11:15:33,661 INFO L146 ILogger]: Start removeUnreachable. Operand 49 states. [2019-05-23 11:15:33,662 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2019-05-23 11:15:33,663 INFO L146 ILogger]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 27 [2019-05-23 11:15:33,663 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:33,663 INFO L146 ILogger]: Abstraction has 49 states and 53 transitions. [2019-05-23 11:15:33,663 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:15:33,663 INFO L146 ILogger]: Start isEmpty. Operand 49 states and 53 transitions. [2019-05-23 11:15:33,664 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:15:33,664 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:33,664 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:33,665 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:33,665 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:33,665 INFO L146 ILogger]: Analyzing trace with hash 1677971095, now seen corresponding path program 3 times [2019-05-23 11:15:33,665 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:33,665 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:33,666 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,666 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:33,666 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,679 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,767 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:33,767 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:33,768 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 11:15:33,777 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:33,799 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:15:33,800 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,800 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:15:33,802 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:33,823 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:33,848 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:33,849 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:15:33,849 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:33,850 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:33,850 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:33,850 INFO L146 ILogger]: Start difference. First operand 49 states and 53 transitions. Second operand 7 states. [2019-05-23 11:15:34,015 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:34,015 INFO L146 ILogger]: Finished difference Result 80 states and 87 transitions. [2019-05-23 11:15:34,018 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:15:34,018 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 32 [2019-05-23 11:15:34,019 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:34,020 INFO L146 ILogger]: With dead ends: 80 [2019-05-23 11:15:34,020 INFO L146 ILogger]: Without dead ends: 66 [2019-05-23 11:15:34,020 INFO L146 ILogger]: 0 DeclaredPredicates, 37 GetRequests, 32 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 11:15:34,021 INFO L146 ILogger]: Start minimizeSevpa. Operand 66 states. [2019-05-23 11:15:34,026 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 66 to 58. [2019-05-23 11:15:34,026 INFO L146 ILogger]: Start removeUnreachable. Operand 58 states. [2019-05-23 11:15:34,028 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2019-05-23 11:15:34,028 INFO L146 ILogger]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 32 [2019-05-23 11:15:34,028 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:34,028 INFO L146 ILogger]: Abstraction has 58 states and 63 transitions. [2019-05-23 11:15:34,028 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:34,029 INFO L146 ILogger]: Start isEmpty. Operand 58 states and 63 transitions. [2019-05-23 11:15:34,030 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:15:34,030 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:34,030 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:34,030 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:34,031 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:34,031 INFO L146 ILogger]: Analyzing trace with hash -941587198, now seen corresponding path program 4 times [2019-05-23 11:15:34,031 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:34,031 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:34,032 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,032 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:34,032 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,046 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,156 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:34,157 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:34,157 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 11:15:34,171 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:34,201 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:34,202 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,202 INFO L146 ILogger]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:34,204 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:34,235 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:34,259 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:34,259 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:15:34,260 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:15:34,260 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:15:34,260 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:34,260 INFO L146 ILogger]: Start difference. First operand 58 states and 63 transitions. Second operand 8 states. [2019-05-23 11:15:34,448 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:34,448 INFO L146 ILogger]: Finished difference Result 89 states and 97 transitions. [2019-05-23 11:15:34,449 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:15:34,449 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 37 [2019-05-23 11:15:34,450 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:34,451 INFO L146 ILogger]: With dead ends: 89 [2019-05-23 11:15:34,451 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:15:34,451 INFO L146 ILogger]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:34,452 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:15:34,463 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 67. [2019-05-23 11:15:34,464 INFO L146 ILogger]: Start removeUnreachable. Operand 67 states. [2019-05-23 11:15:34,465 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2019-05-23 11:15:34,465 INFO L146 ILogger]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 37 [2019-05-23 11:15:34,465 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:34,465 INFO L146 ILogger]: Abstraction has 67 states and 73 transitions. [2019-05-23 11:15:34,466 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:15:34,467 INFO L146 ILogger]: Start isEmpty. Operand 67 states and 73 transitions. [2019-05-23 11:15:34,468 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:15:34,468 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:34,468 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:34,468 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:34,469 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:34,470 INFO L146 ILogger]: Analyzing trace with hash -1239672457, now seen corresponding path program 5 times [2019-05-23 11:15:34,471 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:34,471 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:34,477 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,478 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:34,478 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,513 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,018 INFO L146 ILogger]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:35,019 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:35,019 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 11:15:35,033 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:35,062 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:15:35,062 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,063 INFO L146 ILogger]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:15:35,064 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:35,085 INFO L146 ILogger]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:35,107 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:35,107 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:15:35,108 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:15:35,108 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:15:35,108 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:35,108 INFO L146 ILogger]: Start difference. First operand 67 states and 73 transitions. Second operand 9 states. [2019-05-23 11:15:35,426 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:35,427 INFO L146 ILogger]: Finished difference Result 98 states and 107 transitions. [2019-05-23 11:15:35,430 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:15:35,430 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 42 [2019-05-23 11:15:35,431 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:35,431 INFO L146 ILogger]: With dead ends: 98 [2019-05-23 11:15:35,432 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:15:35,432 INFO L146 ILogger]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:35,433 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:15:35,445 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 76. [2019-05-23 11:15:35,446 INFO L146 ILogger]: Start removeUnreachable. Operand 76 states. [2019-05-23 11:15:35,450 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2019-05-23 11:15:35,450 INFO L146 ILogger]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 42 [2019-05-23 11:15:35,451 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:35,451 INFO L146 ILogger]: Abstraction has 76 states and 83 transitions. [2019-05-23 11:15:35,451 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:15:35,451 INFO L146 ILogger]: Start isEmpty. Operand 76 states and 83 transitions. [2019-05-23 11:15:35,452 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:15:35,452 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:35,453 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:35,453 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:35,453 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:35,453 INFO L146 ILogger]: Analyzing trace with hash -911997406, now seen corresponding path program 6 times [2019-05-23 11:15:35,454 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:35,454 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:35,455 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,455 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:35,455 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,467 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,644 INFO L146 ILogger]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:35,645 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:35,645 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 11:15:35,659 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:35,700 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:15:35,700 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,702 INFO L146 ILogger]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:15:35,704 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:35,732 INFO L146 ILogger]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:35,753 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:35,753 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:15:35,753 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:15:35,754 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:15:35,754 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:15:35,754 INFO L146 ILogger]: Start difference. First operand 76 states and 83 transitions. Second operand 10 states. [2019-05-23 11:15:35,848 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:35,848 INFO L146 ILogger]: Finished difference Result 107 states and 117 transitions. [2019-05-23 11:15:35,849 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:15:35,849 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 47 [2019-05-23 11:15:35,850 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:35,851 INFO L146 ILogger]: With dead ends: 107 [2019-05-23 11:15:35,851 INFO L146 ILogger]: Without dead ends: 93 [2019-05-23 11:15:35,852 INFO L146 ILogger]: 0 DeclaredPredicates, 55 GetRequests, 47 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 11:15:35,852 INFO L146 ILogger]: Start minimizeSevpa. Operand 93 states. [2019-05-23 11:15:35,857 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 93 to 85. [2019-05-23 11:15:35,857 INFO L146 ILogger]: Start removeUnreachable. Operand 85 states. [2019-05-23 11:15:35,858 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2019-05-23 11:15:35,859 INFO L146 ILogger]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 47 [2019-05-23 11:15:35,859 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:35,859 INFO L146 ILogger]: Abstraction has 85 states and 93 transitions. [2019-05-23 11:15:35,859 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:15:35,859 INFO L146 ILogger]: Start isEmpty. Operand 85 states and 93 transitions. [2019-05-23 11:15:35,860 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 53 [2019-05-23 11:15:35,861 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:35,861 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:35,861 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:35,861 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:35,861 INFO L146 ILogger]: Analyzing trace with hash -1375974313, now seen corresponding path program 7 times [2019-05-23 11:15:35,862 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:35,862 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:35,862 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,863 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:35,863 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,878 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,045 INFO L146 ILogger]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:36,046 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:36,046 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 11:15:36,055 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:36,076 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,077 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:15:36,081 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:36,110 INFO L146 ILogger]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:36,132 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:36,133 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:15:36,133 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:15:36,133 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:15:36,134 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:15:36,134 INFO L146 ILogger]: Start difference. First operand 85 states and 93 transitions. Second operand 11 states. [2019-05-23 11:15:36,291 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:36,291 INFO L146 ILogger]: Finished difference Result 116 states and 127 transitions. [2019-05-23 11:15:36,292 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:15:36,292 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 52 [2019-05-23 11:15:36,292 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:36,293 INFO L146 ILogger]: With dead ends: 116 [2019-05-23 11:15:36,293 INFO L146 ILogger]: Without dead ends: 102 [2019-05-23 11:15:36,294 INFO L146 ILogger]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:15:36,294 INFO L146 ILogger]: Start minimizeSevpa. Operand 102 states. [2019-05-23 11:15:36,300 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 102 to 94. [2019-05-23 11:15:36,301 INFO L146 ILogger]: Start removeUnreachable. Operand 94 states. [2019-05-23 11:15:36,302 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2019-05-23 11:15:36,302 INFO L146 ILogger]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 52 [2019-05-23 11:15:36,303 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:36,303 INFO L146 ILogger]: Abstraction has 94 states and 103 transitions. [2019-05-23 11:15:36,303 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:15:36,303 INFO L146 ILogger]: Start isEmpty. Operand 94 states and 103 transitions. [2019-05-23 11:15:36,304 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:15:36,304 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:36,304 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:36,305 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:36,305 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:36,305 INFO L146 ILogger]: Analyzing trace with hash -1907318974, now seen corresponding path program 8 times [2019-05-23 11:15:36,305 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:36,306 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:36,306 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,307 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:36,307 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,318 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,478 INFO L146 ILogger]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:36,479 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:36,479 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 11:15:36,488 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:36,529 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:36,529 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,530 INFO L146 ILogger]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:15:36,533 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:36,643 INFO L146 ILogger]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:36,674 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:36,674 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:15:36,674 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:15:36,675 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:15:36,675 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:15:36,675 INFO L146 ILogger]: Start difference. First operand 94 states and 103 transitions. Second operand 12 states. [2019-05-23 11:15:37,123 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:37,124 INFO L146 ILogger]: Finished difference Result 125 states and 137 transitions. [2019-05-23 11:15:37,125 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:15:37,125 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 57 [2019-05-23 11:15:37,125 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:37,126 INFO L146 ILogger]: With dead ends: 125 [2019-05-23 11:15:37,126 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:15:37,127 INFO L146 ILogger]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:15:37,127 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:15:37,132 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 103. [2019-05-23 11:15:37,132 INFO L146 ILogger]: Start removeUnreachable. Operand 103 states. [2019-05-23 11:15:37,133 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2019-05-23 11:15:37,134 INFO L146 ILogger]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 57 [2019-05-23 11:15:37,134 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:37,134 INFO L146 ILogger]: Abstraction has 103 states and 113 transitions. [2019-05-23 11:15:37,134 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:15:37,134 INFO L146 ILogger]: Start isEmpty. Operand 103 states and 113 transitions. [2019-05-23 11:15:37,136 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 63 [2019-05-23 11:15:37,136 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:37,136 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:37,136 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:37,136 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:37,137 INFO L146 ILogger]: Analyzing trace with hash 1088579383, now seen corresponding path program 9 times [2019-05-23 11:15:37,137 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:37,137 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:37,138 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:37,138 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:37,138 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:37,148 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,270 INFO L146 ILogger]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:37,270 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:37,270 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 11:15:37,279 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:37,303 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:15:37,304 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,304 INFO L146 ILogger]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:15:37,308 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:37,339 INFO L146 ILogger]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:37,357 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:37,357 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:15:37,358 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:15:37,358 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:15:37,358 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:15:37,359 INFO L146 ILogger]: Start difference. First operand 103 states and 113 transitions. Second operand 13 states. [2019-05-23 11:15:37,656 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:37,656 INFO L146 ILogger]: Finished difference Result 134 states and 147 transitions. [2019-05-23 11:15:37,656 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:15:37,656 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 62 [2019-05-23 11:15:37,657 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:37,657 INFO L146 ILogger]: With dead ends: 134 [2019-05-23 11:15:37,657 INFO L146 ILogger]: Without dead ends: 120 [2019-05-23 11:15:37,658 INFO L146 ILogger]: 0 DeclaredPredicates, 73 GetRequests, 62 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 11:15:37,658 INFO L146 ILogger]: Start minimizeSevpa. Operand 120 states. [2019-05-23 11:15:37,664 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 120 to 112. [2019-05-23 11:15:37,664 INFO L146 ILogger]: Start removeUnreachable. Operand 112 states. [2019-05-23 11:15:37,665 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2019-05-23 11:15:37,666 INFO L146 ILogger]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 62 [2019-05-23 11:15:37,666 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:37,667 INFO L146 ILogger]: Abstraction has 112 states and 123 transitions. [2019-05-23 11:15:37,667 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:15:37,667 INFO L146 ILogger]: Start isEmpty. Operand 112 states and 123 transitions. [2019-05-23 11:15:37,668 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:15:37,668 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:37,668 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:37,669 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:37,673 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:37,673 INFO L146 ILogger]: Analyzing trace with hash -1217900446, now seen corresponding path program 10 times [2019-05-23 11:15:37,673 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:37,673 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:37,674 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:37,674 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:37,675 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:37,686 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,822 INFO L146 ILogger]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:37,823 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:37,823 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 11:15:37,838 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:37,859 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:37,859 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,860 INFO L146 ILogger]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:15:37,862 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:37,907 INFO L146 ILogger]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:37,926 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:37,926 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-05-23 11:15:37,927 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:15:37,927 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:15:37,927 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:15:37,928 INFO L146 ILogger]: Start difference. First operand 112 states and 123 transitions. Second operand 14 states. [2019-05-23 11:15:38,046 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:38,047 INFO L146 ILogger]: Finished difference Result 143 states and 157 transitions. [2019-05-23 11:15:38,050 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:15:38,050 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 67 [2019-05-23 11:15:38,051 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:38,052 INFO L146 ILogger]: With dead ends: 143 [2019-05-23 11:15:38,052 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:15:38,053 INFO L146 ILogger]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:15:38,053 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:15:38,057 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 121. [2019-05-23 11:15:38,057 INFO L146 ILogger]: Start removeUnreachable. Operand 121 states. [2019-05-23 11:15:38,058 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 121 states to 121 states and 133 transitions. [2019-05-23 11:15:38,058 INFO L146 ILogger]: Start accepts. Automaton has 121 states and 133 transitions. Word has length 67 [2019-05-23 11:15:38,059 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:38,059 INFO L146 ILogger]: Abstraction has 121 states and 133 transitions. [2019-05-23 11:15:38,059 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:15:38,059 INFO L146 ILogger]: Start isEmpty. Operand 121 states and 133 transitions. [2019-05-23 11:15:38,060 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 73 [2019-05-23 11:15:38,061 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:38,061 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:38,061 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:38,061 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:38,061 INFO L146 ILogger]: Analyzing trace with hash 1854695959, now seen corresponding path program 11 times [2019-05-23 11:15:38,062 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:38,062 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:38,063 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:38,063 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:38,063 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:38,081 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:38,311 INFO L146 ILogger]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:38,311 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:38,311 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 11:15:38,320 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:38,348 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:15:38,348 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:38,349 INFO L146 ILogger]: Trace formula consists of 113 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:15:38,352 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:38,391 INFO L146 ILogger]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:38,418 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:38,419 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:15:38,419 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:15:38,419 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:15:38,420 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:38,420 INFO L146 ILogger]: Start difference. First operand 121 states and 133 transitions. Second operand 15 states. [2019-05-23 11:15:38,614 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:38,614 INFO L146 ILogger]: Finished difference Result 152 states and 167 transitions. [2019-05-23 11:15:38,616 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:15:38,616 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 72 [2019-05-23 11:15:38,616 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:38,617 INFO L146 ILogger]: With dead ends: 152 [2019-05-23 11:15:38,617 INFO L146 ILogger]: Without dead ends: 138 [2019-05-23 11:15:38,618 INFO L146 ILogger]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:38,618 INFO L146 ILogger]: Start minimizeSevpa. Operand 138 states. [2019-05-23 11:15:38,621 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 138 to 130. [2019-05-23 11:15:38,621 INFO L146 ILogger]: Start removeUnreachable. Operand 130 states. [2019-05-23 11:15:38,622 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2019-05-23 11:15:38,622 INFO L146 ILogger]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 72 [2019-05-23 11:15:38,622 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:38,622 INFO L146 ILogger]: Abstraction has 130 states and 143 transitions. [2019-05-23 11:15:38,623 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:15:38,623 INFO L146 ILogger]: Start isEmpty. Operand 130 states and 143 transitions. [2019-05-23 11:15:38,624 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 78 [2019-05-23 11:15:38,624 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:38,624 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:38,624 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:38,624 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:38,625 INFO L146 ILogger]: Analyzing trace with hash 1810700674, now seen corresponding path program 12 times [2019-05-23 11:15:38,625 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:38,625 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:38,626 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:38,626 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:38,626 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:38,636 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,295 INFO L146 ILogger]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:39,295 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:39,295 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 11:15:39,305 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:39,335 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:15:39,336 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,337 INFO L146 ILogger]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:15:39,339 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:39,360 INFO L146 ILogger]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:39,380 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:39,380 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:15:39,380 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:15:39,381 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:15:39,381 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:15:39,381 INFO L146 ILogger]: Start difference. First operand 130 states and 143 transitions. Second operand 16 states. [2019-05-23 11:15:39,513 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:39,513 INFO L146 ILogger]: Finished difference Result 161 states and 177 transitions. [2019-05-23 11:15:39,514 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:15:39,514 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 77 [2019-05-23 11:15:39,514 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:39,515 INFO L146 ILogger]: With dead ends: 161 [2019-05-23 11:15:39,515 INFO L146 ILogger]: Without dead ends: 147 [2019-05-23 11:15:39,515 INFO L146 ILogger]: 0 DeclaredPredicates, 91 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:15:39,516 INFO L146 ILogger]: Start minimizeSevpa. Operand 147 states. [2019-05-23 11:15:39,519 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 147 to 139. [2019-05-23 11:15:39,520 INFO L146 ILogger]: Start removeUnreachable. Operand 139 states. [2019-05-23 11:15:39,520 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2019-05-23 11:15:39,520 INFO L146 ILogger]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 77 [2019-05-23 11:15:39,521 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:39,521 INFO L146 ILogger]: Abstraction has 139 states and 153 transitions. [2019-05-23 11:15:39,521 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:15:39,521 INFO L146 ILogger]: Start isEmpty. Operand 139 states and 153 transitions. [2019-05-23 11:15:39,522 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 83 [2019-05-23 11:15:39,522 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:39,522 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:39,522 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:39,523 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:39,523 INFO L146 ILogger]: Analyzing trace with hash 557339895, now seen corresponding path program 13 times [2019-05-23 11:15:39,523 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:39,523 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:39,524 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,524 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:39,524 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,534 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,749 INFO L146 ILogger]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:39,750 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:39,750 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 11:15:39,758 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:39,780 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,780 INFO L146 ILogger]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:15:39,782 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:39,801 INFO L146 ILogger]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:39,820 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:39,821 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:15:39,821 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:15:39,821 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:15:39,822 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:15:39,822 INFO L146 ILogger]: Start difference. First operand 139 states and 153 transitions. Second operand 17 states. [2019-05-23 11:15:39,979 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:39,979 INFO L146 ILogger]: Finished difference Result 170 states and 187 transitions. [2019-05-23 11:15:39,979 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:15:39,979 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 82 [2019-05-23 11:15:39,980 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:39,981 INFO L146 ILogger]: With dead ends: 170 [2019-05-23 11:15:39,981 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:15:39,983 INFO L146 ILogger]: 0 DeclaredPredicates, 97 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:15:39,983 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:15:39,986 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 148. [2019-05-23 11:15:39,986 INFO L146 ILogger]: Start removeUnreachable. Operand 148 states. [2019-05-23 11:15:39,987 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 148 states to 148 states and 163 transitions. [2019-05-23 11:15:39,987 INFO L146 ILogger]: Start accepts. Automaton has 148 states and 163 transitions. Word has length 82 [2019-05-23 11:15:39,987 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:39,988 INFO L146 ILogger]: Abstraction has 148 states and 163 transitions. [2019-05-23 11:15:39,988 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:15:39,988 INFO L146 ILogger]: Start isEmpty. Operand 148 states and 163 transitions. [2019-05-23 11:15:39,989 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 88 [2019-05-23 11:15:39,989 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:39,989 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:39,989 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:39,989 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:39,990 INFO L146 ILogger]: Analyzing trace with hash 2019621538, now seen corresponding path program 14 times [2019-05-23 11:15:39,990 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:39,990 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:39,990 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,991 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:39,991 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,000 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:40,274 INFO L146 ILogger]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:40,275 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:40,275 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 11:15:40,284 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:40,320 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:40,321 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:40,322 INFO L146 ILogger]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:15:40,323 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:40,354 INFO L146 ILogger]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:40,375 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:40,375 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:15:40,375 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:15:40,376 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:15:40,376 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:15:40,376 INFO L146 ILogger]: Start difference. First operand 148 states and 163 transitions. Second operand 18 states. [2019-05-23 11:15:40,568 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:40,568 INFO L146 ILogger]: Finished difference Result 179 states and 197 transitions. [2019-05-23 11:15:40,569 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:15:40,569 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 87 [2019-05-23 11:15:40,569 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:40,570 INFO L146 ILogger]: With dead ends: 179 [2019-05-23 11:15:40,570 INFO L146 ILogger]: Without dead ends: 165 [2019-05-23 11:15:40,571 INFO L146 ILogger]: 0 DeclaredPredicates, 103 GetRequests, 87 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 11:15:40,572 INFO L146 ILogger]: Start minimizeSevpa. Operand 165 states. [2019-05-23 11:15:40,575 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 165 to 157. [2019-05-23 11:15:40,576 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:15:40,576 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2019-05-23 11:15:40,577 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 87 [2019-05-23 11:15:40,577 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:40,577 INFO L146 ILogger]: Abstraction has 157 states and 173 transitions. [2019-05-23 11:15:40,577 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:15:40,577 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 173 transitions. [2019-05-23 11:15:40,578 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 93 [2019-05-23 11:15:40,579 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:40,579 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:40,579 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:40,579 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:40,580 INFO L146 ILogger]: Analyzing trace with hash 228861911, now seen corresponding path program 15 times [2019-05-23 11:15:40,580 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:40,580 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:40,581 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,581 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:40,581 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,591 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:40,937 INFO L146 ILogger]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:40,937 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:40,937 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 11:15:40,946 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:41,030 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-05-23 11:15:41,030 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:41,031 INFO L146 ILogger]: Trace formula consists of 141 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:15:41,032 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:41,057 INFO L146 ILogger]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:41,080 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:41,080 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:15:41,080 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:15:41,081 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:15:41,081 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:15:41,081 INFO L146 ILogger]: Start difference. First operand 157 states and 173 transitions. Second operand 19 states. [2019-05-23 11:15:41,267 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:41,267 INFO L146 ILogger]: Finished difference Result 188 states and 207 transitions. [2019-05-23 11:15:41,268 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:15:41,268 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 92 [2019-05-23 11:15:41,268 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:41,269 INFO L146 ILogger]: With dead ends: 188 [2019-05-23 11:15:41,269 INFO L146 ILogger]: Without dead ends: 174 [2019-05-23 11:15:41,270 INFO L146 ILogger]: 0 DeclaredPredicates, 109 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:15:41,270 INFO L146 ILogger]: Start minimizeSevpa. Operand 174 states. [2019-05-23 11:15:41,273 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 174 to 166. [2019-05-23 11:15:41,273 INFO L146 ILogger]: Start removeUnreachable. Operand 166 states. [2019-05-23 11:15:41,274 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2019-05-23 11:15:41,274 INFO L146 ILogger]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 92 [2019-05-23 11:15:41,274 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:41,274 INFO L146 ILogger]: Abstraction has 166 states and 183 transitions. [2019-05-23 11:15:41,274 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:15:41,274 INFO L146 ILogger]: Start isEmpty. Operand 166 states and 183 transitions. [2019-05-23 11:15:41,275 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 98 [2019-05-23 11:15:41,275 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:41,275 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:41,276 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:41,276 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:41,276 INFO L146 ILogger]: Analyzing trace with hash 1858466754, now seen corresponding path program 16 times [2019-05-23 11:15:41,276 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:41,276 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:41,277 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:41,277 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:41,277 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:41,286 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:42,146 INFO L146 ILogger]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:42,146 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:42,146 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 11:15:42,155 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:42,177 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:42,177 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:42,178 INFO L146 ILogger]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:15:42,179 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:42,198 INFO L146 ILogger]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:42,216 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:42,217 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-05-23 11:15:42,217 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:15:42,217 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:15:42,218 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:15:42,218 INFO L146 ILogger]: Start difference. First operand 166 states and 183 transitions. Second operand 20 states. [2019-05-23 11:15:42,353 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:42,354 INFO L146 ILogger]: Finished difference Result 197 states and 217 transitions. [2019-05-23 11:15:42,355 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:15:42,355 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 97 [2019-05-23 11:15:42,355 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:42,356 INFO L146 ILogger]: With dead ends: 197 [2019-05-23 11:15:42,356 INFO L146 ILogger]: Without dead ends: 183 [2019-05-23 11:15:42,357 INFO L146 ILogger]: 0 DeclaredPredicates, 115 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:15:42,358 INFO L146 ILogger]: Start minimizeSevpa. Operand 183 states. [2019-05-23 11:15:42,361 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 183 to 175. [2019-05-23 11:15:42,362 INFO L146 ILogger]: Start removeUnreachable. Operand 175 states. [2019-05-23 11:15:42,362 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 175 states to 175 states and 193 transitions. [2019-05-23 11:15:42,363 INFO L146 ILogger]: Start accepts. Automaton has 175 states and 193 transitions. Word has length 97 [2019-05-23 11:15:42,363 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:42,363 INFO L146 ILogger]: Abstraction has 175 states and 193 transitions. [2019-05-23 11:15:42,363 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:15:42,363 INFO L146 ILogger]: Start isEmpty. Operand 175 states and 193 transitions. [2019-05-23 11:15:42,365 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 103 [2019-05-23 11:15:42,365 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:42,365 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:42,365 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:42,365 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:42,366 INFO L146 ILogger]: Analyzing trace with hash -1827806537, now seen corresponding path program 17 times [2019-05-23 11:15:42,366 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:42,366 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:42,367 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:42,367 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:42,367 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:42,386 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:42,728 INFO L146 ILogger]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:42,728 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:42,728 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 11:15:42,745 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:42,862 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-05-23 11:15:42,862 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:42,863 INFO L146 ILogger]: Trace formula consists of 155 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:15:42,865 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:42,894 INFO L146 ILogger]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:42,923 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:42,923 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:15:42,924 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:15:42,924 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:15:42,924 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:15:42,924 INFO L146 ILogger]: Start difference. First operand 175 states and 193 transitions. Second operand 21 states. [2019-05-23 11:15:43,385 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:43,385 INFO L146 ILogger]: Finished difference Result 206 states and 227 transitions. [2019-05-23 11:15:43,389 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:15:43,389 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 102 [2019-05-23 11:15:43,390 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:43,391 INFO L146 ILogger]: With dead ends: 206 [2019-05-23 11:15:43,391 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:15:43,391 INFO L146 ILogger]: 0 DeclaredPredicates, 121 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:15:43,392 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:15:43,396 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 184. [2019-05-23 11:15:43,396 INFO L146 ILogger]: Start removeUnreachable. Operand 184 states. [2019-05-23 11:15:43,398 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 184 states to 184 states and 203 transitions. [2019-05-23 11:15:43,398 INFO L146 ILogger]: Start accepts. Automaton has 184 states and 203 transitions. Word has length 102 [2019-05-23 11:15:43,399 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:43,399 INFO L146 ILogger]: Abstraction has 184 states and 203 transitions. [2019-05-23 11:15:43,399 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:15:43,399 INFO L146 ILogger]: Start isEmpty. Operand 184 states and 203 transitions. [2019-05-23 11:15:43,400 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 108 [2019-05-23 11:15:43,400 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:43,400 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:43,400 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:43,401 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:43,401 INFO L146 ILogger]: Analyzing trace with hash -962722590, now seen corresponding path program 18 times [2019-05-23 11:15:43,401 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:43,401 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:43,403 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:43,403 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:43,403 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:43,412 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:43,737 INFO L146 ILogger]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:43,738 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:43,738 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 11:15:43,747 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:43,798 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-05-23 11:15:43,798 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:43,800 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:15:43,802 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:43,836 INFO L146 ILogger]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:43,864 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:43,865 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:15:43,865 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:15:43,865 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:15:43,866 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:15:43,866 INFO L146 ILogger]: Start difference. First operand 184 states and 203 transitions. Second operand 22 states. [2019-05-23 11:15:44,126 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:44,126 INFO L146 ILogger]: Finished difference Result 215 states and 237 transitions. [2019-05-23 11:15:44,126 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:15:44,127 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 107 [2019-05-23 11:15:44,127 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:44,128 INFO L146 ILogger]: With dead ends: 215 [2019-05-23 11:15:44,128 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:15:44,129 INFO L146 ILogger]: 0 DeclaredPredicates, 127 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:15:44,130 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:15:44,134 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 193. [2019-05-23 11:15:44,134 INFO L146 ILogger]: Start removeUnreachable. Operand 193 states. [2019-05-23 11:15:44,135 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 193 states to 193 states and 213 transitions. [2019-05-23 11:15:44,136 INFO L146 ILogger]: Start accepts. Automaton has 193 states and 213 transitions. Word has length 107 [2019-05-23 11:15:44,136 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:44,136 INFO L146 ILogger]: Abstraction has 193 states and 213 transitions. [2019-05-23 11:15:44,136 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:15:44,136 INFO L146 ILogger]: Start isEmpty. Operand 193 states and 213 transitions. [2019-05-23 11:15:44,137 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:15:44,137 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:44,138 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:44,138 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:44,138 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:44,138 INFO L146 ILogger]: Analyzing trace with hash -1691122281, now seen corresponding path program 19 times [2019-05-23 11:15:44,139 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:44,139 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:44,139 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:44,140 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:44,140 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:44,150 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:44,412 INFO L146 ILogger]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:44,412 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:44,413 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 11:15:44,421 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:44,444 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:44,445 INFO L146 ILogger]: Trace formula consists of 169 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:15:44,446 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:44,468 INFO L146 ILogger]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:44,495 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:44,495 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:15:44,495 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:15:44,496 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:15:44,496 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:15:44,496 INFO L146 ILogger]: Start difference. First operand 193 states and 213 transitions. Second operand 23 states. [2019-05-23 11:15:44,672 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:44,673 INFO L146 ILogger]: Finished difference Result 224 states and 247 transitions. [2019-05-23 11:15:44,674 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:15:44,674 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 112 [2019-05-23 11:15:44,674 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:44,675 INFO L146 ILogger]: With dead ends: 224 [2019-05-23 11:15:44,675 INFO L146 ILogger]: Without dead ends: 210 [2019-05-23 11:15:44,676 INFO L146 ILogger]: 0 DeclaredPredicates, 133 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:15:44,676 INFO L146 ILogger]: Start minimizeSevpa. Operand 210 states. [2019-05-23 11:15:44,680 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 210 to 202. [2019-05-23 11:15:44,680 INFO L146 ILogger]: Start removeUnreachable. Operand 202 states. [2019-05-23 11:15:44,681 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 202 states to 202 states and 223 transitions. [2019-05-23 11:15:44,681 INFO L146 ILogger]: Start accepts. Automaton has 202 states and 223 transitions. Word has length 112 [2019-05-23 11:15:44,681 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:44,682 INFO L146 ILogger]: Abstraction has 202 states and 223 transitions. [2019-05-23 11:15:44,682 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:15:44,682 INFO L146 ILogger]: Start isEmpty. Operand 202 states and 223 transitions. [2019-05-23 11:15:44,682 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 118 [2019-05-23 11:15:44,683 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:44,683 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:44,683 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:44,683 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:44,683 INFO L146 ILogger]: Analyzing trace with hash -51696126, now seen corresponding path program 20 times [2019-05-23 11:15:44,684 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:44,684 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:44,684 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:44,684 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:44,684 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:44,693 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:45,162 INFO L146 ILogger]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:45,162 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:45,162 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 11:15:45,172 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:45,209 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:45,209 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:45,210 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:15:45,212 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:45,250 INFO L146 ILogger]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:45,276 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:45,276 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-05-23 11:15:45,277 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:15:45,277 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:15:45,277 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:15:45,278 INFO L146 ILogger]: Start difference. First operand 202 states and 223 transitions. Second operand 24 states. [2019-05-23 11:15:45,451 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:45,452 INFO L146 ILogger]: Finished difference Result 233 states and 257 transitions. [2019-05-23 11:15:45,452 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:15:45,452 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 117 [2019-05-23 11:15:45,453 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:45,454 INFO L146 ILogger]: With dead ends: 233 [2019-05-23 11:15:45,454 INFO L146 ILogger]: Without dead ends: 219 [2019-05-23 11:15:45,455 INFO L146 ILogger]: 0 DeclaredPredicates, 139 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:15:45,456 INFO L146 ILogger]: Start minimizeSevpa. Operand 219 states. [2019-05-23 11:15:45,460 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 219 to 211. [2019-05-23 11:15:45,460 INFO L146 ILogger]: Start removeUnreachable. Operand 211 states. [2019-05-23 11:15:45,461 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 211 states to 211 states and 233 transitions. [2019-05-23 11:15:45,461 INFO L146 ILogger]: Start accepts. Automaton has 211 states and 233 transitions. Word has length 117 [2019-05-23 11:15:45,461 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:45,461 INFO L146 ILogger]: Abstraction has 211 states and 233 transitions. [2019-05-23 11:15:45,461 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:15:45,461 INFO L146 ILogger]: Start isEmpty. Operand 211 states and 233 transitions. [2019-05-23 11:15:45,462 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 123 [2019-05-23 11:15:45,463 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:45,463 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:45,463 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:45,463 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:45,463 INFO L146 ILogger]: Analyzing trace with hash 2052264055, now seen corresponding path program 21 times [2019-05-23 11:15:45,463 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:45,464 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:45,464 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:45,464 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:45,464 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:45,474 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:45,753 INFO L146 ILogger]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:45,753 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:45,753 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 11:15:45,763 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:45,809 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-05-23 11:15:45,809 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:45,810 INFO L146 ILogger]: Trace formula consists of 183 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:15:45,812 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:45,856 INFO L146 ILogger]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:45,886 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:45,887 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-05-23 11:15:45,887 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:15:45,887 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:15:45,888 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:15:45,888 INFO L146 ILogger]: Start difference. First operand 211 states and 233 transitions. Second operand 25 states. [2019-05-23 11:15:46,163 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:46,163 INFO L146 ILogger]: Finished difference Result 242 states and 267 transitions. [2019-05-23 11:15:46,166 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:15:46,166 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 122 [2019-05-23 11:15:46,167 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:46,168 INFO L146 ILogger]: With dead ends: 242 [2019-05-23 11:15:46,168 INFO L146 ILogger]: Without dead ends: 228 [2019-05-23 11:15:46,169 INFO L146 ILogger]: 0 DeclaredPredicates, 145 GetRequests, 122 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 11:15:46,169 INFO L146 ILogger]: Start minimizeSevpa. Operand 228 states. [2019-05-23 11:15:46,173 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 228 to 220. [2019-05-23 11:15:46,173 INFO L146 ILogger]: Start removeUnreachable. Operand 220 states. [2019-05-23 11:15:46,174 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 220 states to 220 states and 243 transitions. [2019-05-23 11:15:46,174 INFO L146 ILogger]: Start accepts. Automaton has 220 states and 243 transitions. Word has length 122 [2019-05-23 11:15:46,174 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:46,174 INFO L146 ILogger]: Abstraction has 220 states and 243 transitions. [2019-05-23 11:15:46,174 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:15:46,175 INFO L146 ILogger]: Start isEmpty. Operand 220 states and 243 transitions. [2019-05-23 11:15:46,175 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 128 [2019-05-23 11:15:46,175 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:46,176 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:46,176 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:46,176 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:46,176 INFO L146 ILogger]: Analyzing trace with hash -1271959774, now seen corresponding path program 22 times [2019-05-23 11:15:46,176 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:46,177 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:46,177 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:46,177 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:46,177 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:46,187 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:46,626 INFO L146 ILogger]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:46,627 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:46,627 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 11:15:46,635 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:46,666 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:46,666 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:46,667 INFO L146 ILogger]: Trace formula consists of 190 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:15:46,669 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:46,693 INFO L146 ILogger]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:46,715 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:46,715 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-05-23 11:15:46,716 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:15:46,716 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:15:46,717 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:15:46,717 INFO L146 ILogger]: Start difference. First operand 220 states and 243 transitions. Second operand 26 states. [2019-05-23 11:15:47,035 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:47,035 INFO L146 ILogger]: Finished difference Result 251 states and 277 transitions. [2019-05-23 11:15:47,036 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:15:47,036 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 127 [2019-05-23 11:15:47,037 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:47,038 INFO L146 ILogger]: With dead ends: 251 [2019-05-23 11:15:47,038 INFO L146 ILogger]: Without dead ends: 237 [2019-05-23 11:15:47,039 INFO L146 ILogger]: 0 DeclaredPredicates, 151 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:15:47,040 INFO L146 ILogger]: Start minimizeSevpa. Operand 237 states. [2019-05-23 11:15:47,044 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 237 to 229. [2019-05-23 11:15:47,045 INFO L146 ILogger]: Start removeUnreachable. Operand 229 states. [2019-05-23 11:15:47,046 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 229 states to 229 states and 253 transitions. [2019-05-23 11:15:47,046 INFO L146 ILogger]: Start accepts. Automaton has 229 states and 253 transitions. Word has length 127 [2019-05-23 11:15:47,046 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:47,046 INFO L146 ILogger]: Abstraction has 229 states and 253 transitions. [2019-05-23 11:15:47,046 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:15:47,047 INFO L146 ILogger]: Start isEmpty. Operand 229 states and 253 transitions. [2019-05-23 11:15:47,048 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:15:47,048 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:47,048 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:47,049 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:47,049 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:47,049 INFO L146 ILogger]: Analyzing trace with hash -819297449, now seen corresponding path program 23 times [2019-05-23 11:15:47,050 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:47,051 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:47,052 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:47,052 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:47,052 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:47,072 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:47,831 INFO L146 ILogger]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:47,831 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:47,831 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:15:47,847 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:47,906 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-05-23 11:15:47,907 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:47,908 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:15:47,910 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:47,993 INFO L146 ILogger]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:48,011 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:48,011 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:15:48,012 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:15:48,012 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:15:48,012 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:15:48,012 INFO L146 ILogger]: Start difference. First operand 229 states and 253 transitions. Second operand 27 states. [2019-05-23 11:15:48,211 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:48,212 INFO L146 ILogger]: Finished difference Result 260 states and 287 transitions. [2019-05-23 11:15:48,212 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:15:48,212 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 132 [2019-05-23 11:15:48,213 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:48,215 INFO L146 ILogger]: With dead ends: 260 [2019-05-23 11:15:48,215 INFO L146 ILogger]: Without dead ends: 246 [2019-05-23 11:15:48,216 INFO L146 ILogger]: 0 DeclaredPredicates, 157 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:15:48,216 INFO L146 ILogger]: Start minimizeSevpa. Operand 246 states. [2019-05-23 11:15:48,220 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 246 to 238. [2019-05-23 11:15:48,220 INFO L146 ILogger]: Start removeUnreachable. Operand 238 states. [2019-05-23 11:15:48,221 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 238 states to 238 states and 263 transitions. [2019-05-23 11:15:48,221 INFO L146 ILogger]: Start accepts. Automaton has 238 states and 263 transitions. Word has length 132 [2019-05-23 11:15:48,222 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:48,222 INFO L146 ILogger]: Abstraction has 238 states and 263 transitions. [2019-05-23 11:15:48,222 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:15:48,222 INFO L146 ILogger]: Start isEmpty. Operand 238 states and 263 transitions. [2019-05-23 11:15:48,223 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:15:48,223 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:48,223 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:48,223 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:48,224 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:48,224 INFO L146 ILogger]: Analyzing trace with hash -731068350, now seen corresponding path program 24 times [2019-05-23 11:15:48,224 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:48,224 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:48,225 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:48,225 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:48,225 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:48,236 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:49,523 INFO L146 ILogger]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:49,523 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:49,524 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 11:15:49,532 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:49,587 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2019-05-23 11:15:49,588 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:49,589 INFO L146 ILogger]: Trace formula consists of 204 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:15:49,592 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:49,621 INFO L146 ILogger]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:49,646 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:49,646 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2019-05-23 11:15:49,646 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:15:49,646 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:15:49,647 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:15:49,647 INFO L146 ILogger]: Start difference. First operand 238 states and 263 transitions. Second operand 28 states. [2019-05-23 11:15:49,855 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:49,855 INFO L146 ILogger]: Finished difference Result 269 states and 297 transitions. [2019-05-23 11:15:49,855 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:15:49,856 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 137 [2019-05-23 11:15:49,856 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:49,858 INFO L146 ILogger]: With dead ends: 269 [2019-05-23 11:15:49,858 INFO L146 ILogger]: Without dead ends: 255 [2019-05-23 11:15:49,858 INFO L146 ILogger]: 0 DeclaredPredicates, 163 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:15:49,859 INFO L146 ILogger]: Start minimizeSevpa. Operand 255 states. [2019-05-23 11:15:49,862 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 255 to 247. [2019-05-23 11:15:49,862 INFO L146 ILogger]: Start removeUnreachable. Operand 247 states. [2019-05-23 11:15:49,863 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 247 states to 247 states and 273 transitions. [2019-05-23 11:15:49,863 INFO L146 ILogger]: Start accepts. Automaton has 247 states and 273 transitions. Word has length 137 [2019-05-23 11:15:49,864 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:49,864 INFO L146 ILogger]: Abstraction has 247 states and 273 transitions. [2019-05-23 11:15:49,864 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:15:49,864 INFO L146 ILogger]: Start isEmpty. Operand 247 states and 273 transitions. [2019-05-23 11:15:49,865 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 143 [2019-05-23 11:15:49,865 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:49,865 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:49,866 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:49,866 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:49,866 INFO L146 ILogger]: Analyzing trace with hash 1660411447, now seen corresponding path program 25 times [2019-05-23 11:15:49,866 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:49,866 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:49,867 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:49,867 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:49,867 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:49,878 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:51,139 INFO L146 ILogger]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:51,139 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:51,139 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:15:51,153 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:51,186 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:51,187 INFO L146 ILogger]: Trace formula consists of 211 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:15:51,188 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:51,218 INFO L146 ILogger]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:51,237 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:51,237 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-05-23 11:15:51,237 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:15:51,238 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:15:51,238 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:15:51,238 INFO L146 ILogger]: Start difference. First operand 247 states and 273 transitions. Second operand 29 states. [2019-05-23 11:15:51,503 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:51,504 INFO L146 ILogger]: Finished difference Result 278 states and 307 transitions. [2019-05-23 11:15:51,504 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:15:51,504 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 142 [2019-05-23 11:15:51,505 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:51,507 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:15:51,507 INFO L146 ILogger]: Without dead ends: 264 [2019-05-23 11:15:51,508 INFO L146 ILogger]: 0 DeclaredPredicates, 169 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:15:51,508 INFO L146 ILogger]: Start minimizeSevpa. Operand 264 states. [2019-05-23 11:15:51,512 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 264 to 256. [2019-05-23 11:15:51,512 INFO L146 ILogger]: Start removeUnreachable. Operand 256 states. [2019-05-23 11:15:51,513 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 256 states to 256 states and 283 transitions. [2019-05-23 11:15:51,513 INFO L146 ILogger]: Start accepts. Automaton has 256 states and 283 transitions. Word has length 142 [2019-05-23 11:15:51,513 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:51,514 INFO L146 ILogger]: Abstraction has 256 states and 283 transitions. [2019-05-23 11:15:51,514 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:15:51,514 INFO L146 ILogger]: Start isEmpty. Operand 256 states and 283 transitions. [2019-05-23 11:15:51,515 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 148 [2019-05-23 11:15:51,515 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:51,515 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:51,515 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:51,516 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:51,516 INFO L146 ILogger]: Analyzing trace with hash -1423623838, now seen corresponding path program 26 times [2019-05-23 11:15:51,516 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:51,516 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:51,517 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:51,517 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:51,517 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:51,528 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:52,678 INFO L146 ILogger]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:52,678 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:52,679 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 11:15:52,687 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:52,721 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:52,721 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:52,722 INFO L146 ILogger]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:15:52,723 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:52,754 INFO L146 ILogger]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:52,772 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:52,772 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2019-05-23 11:15:52,773 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:15:52,773 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:15:52,773 INFO L146 ILogger]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:15:52,774 INFO L146 ILogger]: Start difference. First operand 256 states and 283 transitions. Second operand 30 states. [2019-05-23 11:15:53,069 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:53,069 INFO L146 ILogger]: Finished difference Result 287 states and 317 transitions. [2019-05-23 11:15:53,070 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:15:53,070 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 147 [2019-05-23 11:15:53,070 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:53,072 INFO L146 ILogger]: With dead ends: 287 [2019-05-23 11:15:53,072 INFO L146 ILogger]: Without dead ends: 273 [2019-05-23 11:15:53,073 INFO L146 ILogger]: 0 DeclaredPredicates, 175 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:15:53,074 INFO L146 ILogger]: Start minimizeSevpa. Operand 273 states. [2019-05-23 11:15:53,077 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 273 to 265. [2019-05-23 11:15:53,077 INFO L146 ILogger]: Start removeUnreachable. Operand 265 states. [2019-05-23 11:15:53,078 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 265 states to 265 states and 293 transitions. [2019-05-23 11:15:53,078 INFO L146 ILogger]: Start accepts. Automaton has 265 states and 293 transitions. Word has length 147 [2019-05-23 11:15:53,078 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:53,079 INFO L146 ILogger]: Abstraction has 265 states and 293 transitions. [2019-05-23 11:15:53,079 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:15:53,079 INFO L146 ILogger]: Start isEmpty. Operand 265 states and 293 transitions. [2019-05-23 11:15:53,080 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:15:53,080 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:53,080 INFO L146 ILogger]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:53,080 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:53,080 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:53,080 INFO L146 ILogger]: Analyzing trace with hash 158933271, now seen corresponding path program 27 times [2019-05-23 11:15:53,081 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:53,081 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:53,081 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:53,081 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:53,082 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:53,092 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:53,467 INFO L146 ILogger]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:53,468 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:53,468 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 11:15:53,478 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:53,538 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2019-05-23 11:15:53,538 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:53,540 INFO L146 ILogger]: Trace formula consists of 225 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:15:53,543 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:53,589 INFO L146 ILogger]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:53,607 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:53,607 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-05-23 11:15:53,608 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:15:53,608 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:15:53,609 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:15:53,609 INFO L146 ILogger]: Start difference. First operand 265 states and 293 transitions. Second operand 31 states. [2019-05-23 11:15:53,821 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:53,822 INFO L146 ILogger]: Finished difference Result 296 states and 327 transitions. [2019-05-23 11:15:53,822 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:15:53,822 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 152 [2019-05-23 11:15:53,823 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:53,824 INFO L146 ILogger]: With dead ends: 296 [2019-05-23 11:15:53,824 INFO L146 ILogger]: Without dead ends: 282 [2019-05-23 11:15:53,825 INFO L146 ILogger]: 0 DeclaredPredicates, 181 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:15:53,826 INFO L146 ILogger]: Start minimizeSevpa. Operand 282 states. [2019-05-23 11:15:53,829 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 282 to 274. [2019-05-23 11:15:53,830 INFO L146 ILogger]: Start removeUnreachable. Operand 274 states. [2019-05-23 11:15:53,830 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 274 states to 274 states and 303 transitions. [2019-05-23 11:15:53,830 INFO L146 ILogger]: Start accepts. Automaton has 274 states and 303 transitions. Word has length 152 [2019-05-23 11:15:53,831 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:53,831 INFO L146 ILogger]: Abstraction has 274 states and 303 transitions. [2019-05-23 11:15:53,831 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:15:53,831 INFO L146 ILogger]: Start isEmpty. Operand 274 states and 303 transitions. [2019-05-23 11:15:53,832 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:15:53,832 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:53,832 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:53,832 INFO L146 ILogger]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:53,833 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:53,833 INFO L146 ILogger]: Analyzing trace with hash 190497410, now seen corresponding path program 28 times [2019-05-23 11:15:53,833 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:53,833 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:53,834 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:53,834 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:53,834 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:53,844 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:54,372 INFO L146 ILogger]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:54,373 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:54,373 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 11:15:54,381 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:54,416 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:54,416 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:54,417 INFO L146 ILogger]: Trace formula consists of 232 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:15:54,420 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:54,549 INFO L146 ILogger]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:54,578 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:54,579 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:15:54,579 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:15:54,579 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:15:54,580 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:15:54,580 INFO L146 ILogger]: Start difference. First operand 274 states and 303 transitions. Second operand 32 states. [2019-05-23 11:15:55,540 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:55,540 INFO L146 ILogger]: Finished difference Result 305 states and 337 transitions. [2019-05-23 11:15:55,540 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:15:55,540 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 157 [2019-05-23 11:15:55,541 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:55,542 INFO L146 ILogger]: With dead ends: 305 [2019-05-23 11:15:55,543 INFO L146 ILogger]: Without dead ends: 291 [2019-05-23 11:15:55,544 INFO L146 ILogger]: 0 DeclaredPredicates, 187 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:15:55,544 INFO L146 ILogger]: Start minimizeSevpa. Operand 291 states. [2019-05-23 11:15:55,547 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 291 to 283. [2019-05-23 11:15:55,548 INFO L146 ILogger]: Start removeUnreachable. Operand 283 states. [2019-05-23 11:15:55,548 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 283 states to 283 states and 313 transitions. [2019-05-23 11:15:55,548 INFO L146 ILogger]: Start accepts. Automaton has 283 states and 313 transitions. Word has length 157 [2019-05-23 11:15:55,549 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:55,549 INFO L146 ILogger]: Abstraction has 283 states and 313 transitions. [2019-05-23 11:15:55,549 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:15:55,549 INFO L146 ILogger]: Start isEmpty. Operand 283 states and 313 transitions. [2019-05-23 11:15:55,550 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:15:55,550 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:55,550 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:55,550 INFO L146 ILogger]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:55,551 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:55,551 INFO L146 ILogger]: Analyzing trace with hash -2131997705, now seen corresponding path program 29 times [2019-05-23 11:15:55,551 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:55,551 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:55,551 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:55,551 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:55,552 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:55,561 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:56,084 INFO L146 ILogger]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:56,085 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:56,085 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 11:15:56,101 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:56,189 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-05-23 11:15:56,189 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:56,190 INFO L146 ILogger]: Trace formula consists of 239 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:15:56,192 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:56,282 INFO L146 ILogger]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:56,312 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:56,312 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:15:56,313 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:15:56,313 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:15:56,314 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:15:56,314 INFO L146 ILogger]: Start difference. First operand 283 states and 313 transitions. Second operand 33 states. [2019-05-23 11:15:56,673 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:56,674 INFO L146 ILogger]: Finished difference Result 314 states and 347 transitions. [2019-05-23 11:15:56,674 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:15:56,674 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 162 [2019-05-23 11:15:56,674 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:56,675 INFO L146 ILogger]: With dead ends: 314 [2019-05-23 11:15:56,675 INFO L146 ILogger]: Without dead ends: 300 [2019-05-23 11:15:56,677 INFO L146 ILogger]: 0 DeclaredPredicates, 193 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:15:56,677 INFO L146 ILogger]: Start minimizeSevpa. Operand 300 states. [2019-05-23 11:15:56,680 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 300 to 292. [2019-05-23 11:15:56,680 INFO L146 ILogger]: Start removeUnreachable. Operand 292 states. [2019-05-23 11:15:56,680 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 292 states to 292 states and 323 transitions. [2019-05-23 11:15:56,681 INFO L146 ILogger]: Start accepts. Automaton has 292 states and 323 transitions. Word has length 162 [2019-05-23 11:15:56,681 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:56,681 INFO L146 ILogger]: Abstraction has 292 states and 323 transitions. [2019-05-23 11:15:56,681 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:15:56,681 INFO L146 ILogger]: Start isEmpty. Operand 292 states and 323 transitions. [2019-05-23 11:15:56,682 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:15:56,682 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:56,682 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:56,682 INFO L146 ILogger]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:56,682 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:56,682 INFO L146 ILogger]: Analyzing trace with hash 1838113698, now seen corresponding path program 30 times [2019-05-23 11:15:56,683 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:56,683 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:56,683 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:56,684 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:56,684 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:56,695 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:57,225 INFO L146 ILogger]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:57,225 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:57,225 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 11:15:57,234 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:57,305 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2019-05-23 11:15:57,305 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:57,307 INFO L146 ILogger]: Trace formula consists of 246 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:15:57,310 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:57,358 INFO L146 ILogger]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:57,376 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:57,376 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2019-05-23 11:15:57,377 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:15:57,377 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:15:57,378 INFO L146 ILogger]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:15:57,378 INFO L146 ILogger]: Start difference. First operand 292 states and 323 transitions. Second operand 34 states. [2019-05-23 11:15:57,637 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:57,638 INFO L146 ILogger]: Finished difference Result 323 states and 357 transitions. [2019-05-23 11:15:57,638 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:15:57,638 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 167 [2019-05-23 11:15:57,639 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:57,641 INFO L146 ILogger]: With dead ends: 323 [2019-05-23 11:15:57,641 INFO L146 ILogger]: Without dead ends: 309 [2019-05-23 11:15:57,642 INFO L146 ILogger]: 0 DeclaredPredicates, 199 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:15:57,642 INFO L146 ILogger]: Start minimizeSevpa. Operand 309 states. [2019-05-23 11:15:57,646 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 309 to 301. [2019-05-23 11:15:57,646 INFO L146 ILogger]: Start removeUnreachable. Operand 301 states. [2019-05-23 11:15:57,647 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 301 states to 301 states and 333 transitions. [2019-05-23 11:15:57,647 INFO L146 ILogger]: Start accepts. Automaton has 301 states and 333 transitions. Word has length 167 [2019-05-23 11:15:57,647 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:57,647 INFO L146 ILogger]: Abstraction has 301 states and 333 transitions. [2019-05-23 11:15:57,647 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:15:57,647 INFO L146 ILogger]: Start isEmpty. Operand 301 states and 333 transitions. [2019-05-23 11:15:57,648 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 173 [2019-05-23 11:15:57,649 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:57,649 INFO L146 ILogger]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:57,649 INFO L146 ILogger]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:57,649 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:57,649 INFO L146 ILogger]: Analyzing trace with hash 1376739031, now seen corresponding path program 31 times [2019-05-23 11:15:57,650 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:57,650 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:57,650 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:57,650 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:57,651 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:57,661 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:58,249 INFO L146 ILogger]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:58,249 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:58,249 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 11:15:58,261 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:58,298 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:58,299 INFO L146 ILogger]: Trace formula consists of 253 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:15:58,301 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:58,348 INFO L146 ILogger]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:58,379 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:58,379 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2019-05-23 11:15:58,380 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:15:58,380 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:15:58,381 INFO L146 ILogger]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:15:58,381 INFO L146 ILogger]: Start difference. First operand 301 states and 333 transitions. Second operand 35 states. [2019-05-23 11:15:58,656 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:58,657 INFO L146 ILogger]: Finished difference Result 332 states and 367 transitions. [2019-05-23 11:15:58,657 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:15:58,657 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 172 [2019-05-23 11:15:58,657 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:58,659 INFO L146 ILogger]: With dead ends: 332 [2019-05-23 11:15:58,659 INFO L146 ILogger]: Without dead ends: 318 [2019-05-23 11:15:58,660 INFO L146 ILogger]: 0 DeclaredPredicates, 205 GetRequests, 172 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 11:15:58,661 INFO L146 ILogger]: Start minimizeSevpa. Operand 318 states. [2019-05-23 11:15:58,664 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 318 to 310. [2019-05-23 11:15:58,664 INFO L146 ILogger]: Start removeUnreachable. Operand 310 states. [2019-05-23 11:15:58,665 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 310 states to 310 states and 343 transitions. [2019-05-23 11:15:58,665 INFO L146 ILogger]: Start accepts. Automaton has 310 states and 343 transitions. Word has length 172 [2019-05-23 11:15:58,666 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:58,666 INFO L146 ILogger]: Abstraction has 310 states and 343 transitions. [2019-05-23 11:15:58,666 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:15:58,666 INFO L146 ILogger]: Start isEmpty. Operand 310 states and 343 transitions. [2019-05-23 11:15:58,667 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 178 [2019-05-23 11:15:58,667 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:58,667 INFO L146 ILogger]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:58,668 INFO L146 ILogger]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:58,668 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:58,668 INFO L146 ILogger]: Analyzing trace with hash 264576194, now seen corresponding path program 32 times [2019-05-23 11:15:58,668 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:58,668 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:58,669 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:58,669 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:58,669 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:58,680 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:59,297 INFO L146 ILogger]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:59,297 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:59,297 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:15:59,306 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:59,372 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:59,372 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:59,374 INFO L146 ILogger]: Trace formula consists of 260 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:15:59,376 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:59,502 INFO L146 ILogger]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:59,530 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:59,530 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2019-05-23 11:15:59,531 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:15:59,531 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:15:59,532 INFO L146 ILogger]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:15:59,532 INFO L146 ILogger]: Start difference. First operand 310 states and 343 transitions. Second operand 36 states. [2019-05-23 11:15:59,861 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:59,861 INFO L146 ILogger]: Finished difference Result 341 states and 377 transitions. [2019-05-23 11:15:59,862 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:15:59,862 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 177 [2019-05-23 11:15:59,862 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:59,864 INFO L146 ILogger]: With dead ends: 341 [2019-05-23 11:15:59,864 INFO L146 ILogger]: Without dead ends: 327 [2019-05-23 11:15:59,865 INFO L146 ILogger]: 0 DeclaredPredicates, 211 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:15:59,866 INFO L146 ILogger]: Start minimizeSevpa. Operand 327 states. [2019-05-23 11:15:59,870 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 327 to 319. [2019-05-23 11:15:59,870 INFO L146 ILogger]: Start removeUnreachable. Operand 319 states. [2019-05-23 11:15:59,871 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 319 states to 319 states and 353 transitions. [2019-05-23 11:15:59,871 INFO L146 ILogger]: Start accepts. Automaton has 319 states and 353 transitions. Word has length 177 [2019-05-23 11:15:59,872 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:59,872 INFO L146 ILogger]: Abstraction has 319 states and 353 transitions. [2019-05-23 11:15:59,872 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:15:59,872 INFO L146 ILogger]: Start isEmpty. Operand 319 states and 353 transitions. [2019-05-23 11:15:59,873 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 183 [2019-05-23 11:15:59,873 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:59,873 INFO L146 ILogger]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:59,874 INFO L146 ILogger]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:59,874 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:59,874 INFO L146 ILogger]: Analyzing trace with hash -1340057161, now seen corresponding path program 33 times [2019-05-23 11:15:59,874 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:59,874 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:59,875 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:59,875 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:59,875 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:59,887 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:00,488 INFO L146 ILogger]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:00,488 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:00,488 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 11:16:00,498 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:00,576 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2019-05-23 11:16:00,576 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:00,578 INFO L146 ILogger]: Trace formula consists of 267 conjuncts, 35 conjunts are in the unsatisfiable core [2019-05-23 11:16:00,581 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:00,642 INFO L146 ILogger]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:00,660 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:00,661 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2019-05-23 11:16:00,661 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:16:00,661 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:16:00,662 INFO L146 ILogger]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:16:00,662 INFO L146 ILogger]: Start difference. First operand 319 states and 353 transitions. Second operand 37 states. [2019-05-23 11:16:00,928 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:00,928 INFO L146 ILogger]: Finished difference Result 350 states and 387 transitions. [2019-05-23 11:16:00,929 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:16:00,929 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 182 [2019-05-23 11:16:00,930 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:00,931 INFO L146 ILogger]: With dead ends: 350 [2019-05-23 11:16:00,931 INFO L146 ILogger]: Without dead ends: 336 [2019-05-23 11:16:00,932 INFO L146 ILogger]: 0 DeclaredPredicates, 217 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:16:00,933 INFO L146 ILogger]: Start minimizeSevpa. Operand 336 states. [2019-05-23 11:16:00,936 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 336 to 328. [2019-05-23 11:16:00,936 INFO L146 ILogger]: Start removeUnreachable. Operand 328 states. [2019-05-23 11:16:00,937 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 328 states to 328 states and 363 transitions. [2019-05-23 11:16:00,937 INFO L146 ILogger]: Start accepts. Automaton has 328 states and 363 transitions. Word has length 182 [2019-05-23 11:16:00,937 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:00,937 INFO L146 ILogger]: Abstraction has 328 states and 363 transitions. [2019-05-23 11:16:00,937 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:16:00,938 INFO L146 ILogger]: Start isEmpty. Operand 328 states and 363 transitions. [2019-05-23 11:16:00,939 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 188 [2019-05-23 11:16:00,939 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:00,939 INFO L146 ILogger]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:00,939 INFO L146 ILogger]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:00,939 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:00,940 INFO L146 ILogger]: Analyzing trace with hash 360574434, now seen corresponding path program 34 times [2019-05-23 11:16:00,940 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:00,940 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:00,940 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:00,940 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:00,940 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:00,950 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:01,815 INFO L146 ILogger]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:01,816 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:01,816 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 11:16:01,824 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:01,864 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:01,864 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:01,866 INFO L146 ILogger]: Trace formula consists of 274 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:16:01,868 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:01,907 INFO L146 ILogger]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:01,925 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:01,925 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2019-05-23 11:16:01,926 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:16:01,926 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:16:01,927 INFO L146 ILogger]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:16:01,927 INFO L146 ILogger]: Start difference. First operand 328 states and 363 transitions. Second operand 38 states. [2019-05-23 11:16:02,337 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:02,337 INFO L146 ILogger]: Finished difference Result 359 states and 397 transitions. [2019-05-23 11:16:02,337 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:16:02,338 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 187 [2019-05-23 11:16:02,338 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:02,340 INFO L146 ILogger]: With dead ends: 359 [2019-05-23 11:16:02,340 INFO L146 ILogger]: Without dead ends: 345 [2019-05-23 11:16:02,341 INFO L146 ILogger]: 0 DeclaredPredicates, 223 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:16:02,341 INFO L146 ILogger]: Start minimizeSevpa. Operand 345 states. [2019-05-23 11:16:02,344 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 345 to 337. [2019-05-23 11:16:02,344 INFO L146 ILogger]: Start removeUnreachable. Operand 337 states. [2019-05-23 11:16:02,345 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 337 states to 337 states and 373 transitions. [2019-05-23 11:16:02,345 INFO L146 ILogger]: Start accepts. Automaton has 337 states and 373 transitions. Word has length 187 [2019-05-23 11:16:02,346 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:02,346 INFO L146 ILogger]: Abstraction has 337 states and 373 transitions. [2019-05-23 11:16:02,346 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:16:02,346 INFO L146 ILogger]: Start isEmpty. Operand 337 states and 373 transitions. [2019-05-23 11:16:02,347 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 193 [2019-05-23 11:16:02,347 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:02,348 INFO L146 ILogger]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:02,348 INFO L146 ILogger]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:02,348 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:02,348 INFO L146 ILogger]: Analyzing trace with hash 1490893975, now seen corresponding path program 35 times [2019-05-23 11:16:02,348 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:02,348 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:02,349 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:02,349 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:02,350 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:02,362 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:04,227 INFO L146 ILogger]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:04,227 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:04,227 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 11:16:04,236 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:04,334 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2019-05-23 11:16:04,335 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:04,337 INFO L146 ILogger]: Trace formula consists of 281 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:16:04,339 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:04,405 INFO L146 ILogger]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:04,426 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:04,426 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2019-05-23 11:16:04,427 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:16:04,427 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:16:04,427 INFO L146 ILogger]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:16:04,428 INFO L146 ILogger]: Start difference. First operand 337 states and 373 transitions. Second operand 39 states. [2019-05-23 11:16:04,791 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:04,792 INFO L146 ILogger]: Finished difference Result 368 states and 407 transitions. [2019-05-23 11:16:04,792 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:16:04,792 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 192 [2019-05-23 11:16:04,792 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:04,793 INFO L146 ILogger]: With dead ends: 368 [2019-05-23 11:16:04,794 INFO L146 ILogger]: Without dead ends: 354 [2019-05-23 11:16:04,794 INFO L146 ILogger]: 0 DeclaredPredicates, 229 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:16:04,794 INFO L146 ILogger]: Start minimizeSevpa. Operand 354 states. [2019-05-23 11:16:04,798 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 354 to 346. [2019-05-23 11:16:04,798 INFO L146 ILogger]: Start removeUnreachable. Operand 346 states. [2019-05-23 11:16:04,799 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 346 states to 346 states and 383 transitions. [2019-05-23 11:16:04,799 INFO L146 ILogger]: Start accepts. Automaton has 346 states and 383 transitions. Word has length 192 [2019-05-23 11:16:04,799 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:04,799 INFO L146 ILogger]: Abstraction has 346 states and 383 transitions. [2019-05-23 11:16:04,799 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:16:04,799 INFO L146 ILogger]: Start isEmpty. Operand 346 states and 383 transitions. [2019-05-23 11:16:04,801 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 198 [2019-05-23 11:16:04,801 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:04,801 INFO L146 ILogger]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:04,801 INFO L146 ILogger]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:04,801 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:04,802 INFO L146 ILogger]: Analyzing trace with hash -1480861950, now seen corresponding path program 36 times [2019-05-23 11:16:04,802 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:04,802 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:04,802 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:04,803 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:04,803 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:04,813 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:06,869 INFO L146 ILogger]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:06,869 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:06,869 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 11:16:06,878 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:06,969 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2019-05-23 11:16:06,969 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:06,972 INFO L146 ILogger]: Trace formula consists of 288 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:16:06,974 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:07,019 INFO L146 ILogger]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:07,051 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:07,051 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2019-05-23 11:16:07,052 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:16:07,052 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:16:07,053 INFO L146 ILogger]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:16:07,053 INFO L146 ILogger]: Start difference. First operand 346 states and 383 transitions. Second operand 40 states. [2019-05-23 11:16:07,709 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:07,710 INFO L146 ILogger]: Finished difference Result 377 states and 417 transitions. [2019-05-23 11:16:07,710 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:16:07,710 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 197 [2019-05-23 11:16:07,710 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:07,711 INFO L146 ILogger]: With dead ends: 377 [2019-05-23 11:16:07,712 INFO L146 ILogger]: Without dead ends: 363 [2019-05-23 11:16:07,712 INFO L146 ILogger]: 0 DeclaredPredicates, 235 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:16:07,713 INFO L146 ILogger]: Start minimizeSevpa. Operand 363 states. [2019-05-23 11:16:07,716 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 363 to 355. [2019-05-23 11:16:07,716 INFO L146 ILogger]: Start removeUnreachable. Operand 355 states. [2019-05-23 11:16:07,716 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 355 states to 355 states and 393 transitions. [2019-05-23 11:16:07,716 INFO L146 ILogger]: Start accepts. Automaton has 355 states and 393 transitions. Word has length 197 [2019-05-23 11:16:07,717 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:07,717 INFO L146 ILogger]: Abstraction has 355 states and 393 transitions. [2019-05-23 11:16:07,717 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:16:07,717 INFO L146 ILogger]: Start isEmpty. Operand 355 states and 393 transitions. [2019-05-23 11:16:07,718 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 203 [2019-05-23 11:16:07,719 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:07,719 INFO L146 ILogger]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:07,719 INFO L146 ILogger]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:07,719 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:07,719 INFO L146 ILogger]: Analyzing trace with hash 1954809719, now seen corresponding path program 37 times [2019-05-23 11:16:07,720 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:07,720 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:07,720 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:07,720 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:07,721 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:07,732 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:08,505 INFO L146 ILogger]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:08,505 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:08,505 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:16:08,514 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:08,570 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:08,572 INFO L146 ILogger]: Trace formula consists of 295 conjuncts, 39 conjunts are in the unsatisfiable core [2019-05-23 11:16:08,574 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:08,625 INFO L146 ILogger]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:08,643 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:08,644 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2019-05-23 11:16:08,644 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:16:08,645 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:16:08,645 INFO L146 ILogger]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:16:08,646 INFO L146 ILogger]: Start difference. First operand 355 states and 393 transitions. Second operand 41 states. [2019-05-23 11:16:09,021 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:09,021 INFO L146 ILogger]: Finished difference Result 386 states and 427 transitions. [2019-05-23 11:16:09,021 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:16:09,022 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 202 [2019-05-23 11:16:09,022 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:09,024 INFO L146 ILogger]: With dead ends: 386 [2019-05-23 11:16:09,024 INFO L146 ILogger]: Without dead ends: 372 [2019-05-23 11:16:09,024 INFO L146 ILogger]: 0 DeclaredPredicates, 241 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:16:09,025 INFO L146 ILogger]: Start minimizeSevpa. Operand 372 states. [2019-05-23 11:16:09,029 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 372 to 364. [2019-05-23 11:16:09,029 INFO L146 ILogger]: Start removeUnreachable. Operand 364 states. [2019-05-23 11:16:09,030 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 364 states to 364 states and 403 transitions. [2019-05-23 11:16:09,030 INFO L146 ILogger]: Start accepts. Automaton has 364 states and 403 transitions. Word has length 202 [2019-05-23 11:16:09,030 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:09,030 INFO L146 ILogger]: Abstraction has 364 states and 403 transitions. [2019-05-23 11:16:09,030 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:16:09,030 INFO L146 ILogger]: Start isEmpty. Operand 364 states and 403 transitions. [2019-05-23 11:16:09,032 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 208 [2019-05-23 11:16:09,032 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:09,032 INFO L146 ILogger]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:09,032 INFO L146 ILogger]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:09,032 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:09,033 INFO L146 ILogger]: Analyzing trace with hash 352376866, now seen corresponding path program 38 times [2019-05-23 11:16:09,033 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:09,033 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:09,033 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:09,034 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:09,034 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:09,044 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:10,531 INFO L146 ILogger]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:10,532 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:10,532 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 11:16:10,541 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:10,606 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:10,606 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:10,608 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:16:10,609 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:10,661 INFO L146 ILogger]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:10,689 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:10,689 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2019-05-23 11:16:10,690 INFO L146 ILogger]: Interpolant automaton has 42 states [2019-05-23 11:16:10,690 INFO L146 ILogger]: Constructing interpolant automaton starting with 42 interpolants. [2019-05-23 11:16:10,691 INFO L146 ILogger]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:16:10,691 INFO L146 ILogger]: Start difference. First operand 364 states and 403 transitions. Second operand 42 states. [2019-05-23 11:16:11,108 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:11,108 INFO L146 ILogger]: Finished difference Result 395 states and 437 transitions. [2019-05-23 11:16:11,108 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-05-23 11:16:11,109 INFO L146 ILogger]: Start accepts. Automaton has 42 states. Word has length 207 [2019-05-23 11:16:11,109 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:11,110 INFO L146 ILogger]: With dead ends: 395 [2019-05-23 11:16:11,110 INFO L146 ILogger]: Without dead ends: 381 [2019-05-23 11:16:11,111 INFO L146 ILogger]: 0 DeclaredPredicates, 247 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:16:11,111 INFO L146 ILogger]: Start minimizeSevpa. Operand 381 states. [2019-05-23 11:16:11,115 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 381 to 373. [2019-05-23 11:16:11,115 INFO L146 ILogger]: Start removeUnreachable. Operand 373 states. [2019-05-23 11:16:11,116 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 373 states to 373 states and 413 transitions. [2019-05-23 11:16:11,116 INFO L146 ILogger]: Start accepts. Automaton has 373 states and 413 transitions. Word has length 207 [2019-05-23 11:16:11,116 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:11,116 INFO L146 ILogger]: Abstraction has 373 states and 413 transitions. [2019-05-23 11:16:11,116 INFO L146 ILogger]: Interpolant automaton has 42 states. [2019-05-23 11:16:11,117 INFO L146 ILogger]: Start isEmpty. Operand 373 states and 413 transitions. [2019-05-23 11:16:11,118 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 213 [2019-05-23 11:16:11,118 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:11,118 INFO L146 ILogger]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:11,119 INFO L146 ILogger]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:11,119 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:11,119 INFO L146 ILogger]: Analyzing trace with hash 1976744535, now seen corresponding path program 39 times [2019-05-23 11:16:11,119 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:11,119 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:11,120 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:11,120 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:11,120 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:11,132 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:12,770 INFO L146 ILogger]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:12,771 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:12,771 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 11:16:12,780 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:12,872 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2019-05-23 11:16:12,872 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:12,874 INFO L146 ILogger]: Trace formula consists of 309 conjuncts, 41 conjunts are in the unsatisfiable core [2019-05-23 11:16:12,877 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:13,024 INFO L146 ILogger]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:13,062 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:13,062 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2019-05-23 11:16:13,063 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:16:13,063 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:16:13,064 INFO L146 ILogger]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:16:13,064 INFO L146 ILogger]: Start difference. First operand 373 states and 413 transitions. Second operand 43 states. [2019-05-23 11:16:13,536 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:13,536 INFO L146 ILogger]: Finished difference Result 404 states and 447 transitions. [2019-05-23 11:16:13,537 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:16:13,537 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 212 [2019-05-23 11:16:13,537 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:13,538 INFO L146 ILogger]: With dead ends: 404 [2019-05-23 11:16:13,538 INFO L146 ILogger]: Without dead ends: 390 [2019-05-23 11:16:13,539 INFO L146 ILogger]: 0 DeclaredPredicates, 253 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:16:13,539 INFO L146 ILogger]: Start minimizeSevpa. Operand 390 states. [2019-05-23 11:16:13,542 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 390 to 382. [2019-05-23 11:16:13,542 INFO L146 ILogger]: Start removeUnreachable. Operand 382 states. [2019-05-23 11:16:13,543 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 382 states to 382 states and 423 transitions. [2019-05-23 11:16:13,543 INFO L146 ILogger]: Start accepts. Automaton has 382 states and 423 transitions. Word has length 212 [2019-05-23 11:16:13,543 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:13,543 INFO L146 ILogger]: Abstraction has 382 states and 423 transitions. [2019-05-23 11:16:13,543 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:16:13,543 INFO L146 ILogger]: Start isEmpty. Operand 382 states and 423 transitions. [2019-05-23 11:16:13,544 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 218 [2019-05-23 11:16:13,545 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:13,545 INFO L146 ILogger]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:13,545 INFO L146 ILogger]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:13,545 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:13,545 INFO L146 ILogger]: Analyzing trace with hash -246484670, now seen corresponding path program 40 times [2019-05-23 11:16:13,545 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:13,545 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:13,546 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:13,546 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:13,546 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:13,556 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:14,445 INFO L146 ILogger]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:14,446 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:14,446 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 11:16:14,456 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:14,500 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:14,500 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:14,503 INFO L146 ILogger]: Trace formula consists of 316 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:16:14,505 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:14,682 INFO L146 ILogger]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:14,723 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:14,723 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2019-05-23 11:16:14,724 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:16:14,724 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:16:14,725 INFO L146 ILogger]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:16:14,725 INFO L146 ILogger]: Start difference. First operand 382 states and 423 transitions. Second operand 44 states. [2019-05-23 11:16:15,428 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:15,428 INFO L146 ILogger]: Finished difference Result 413 states and 457 transitions. [2019-05-23 11:16:15,428 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:16:15,428 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 217 [2019-05-23 11:16:15,429 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:15,430 INFO L146 ILogger]: With dead ends: 413 [2019-05-23 11:16:15,430 INFO L146 ILogger]: Without dead ends: 399 [2019-05-23 11:16:15,431 INFO L146 ILogger]: 0 DeclaredPredicates, 259 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:16:15,432 INFO L146 ILogger]: Start minimizeSevpa. Operand 399 states. [2019-05-23 11:16:15,435 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 399 to 391. [2019-05-23 11:16:15,435 INFO L146 ILogger]: Start removeUnreachable. Operand 391 states. [2019-05-23 11:16:15,436 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 391 states to 391 states and 433 transitions. [2019-05-23 11:16:15,436 INFO L146 ILogger]: Start accepts. Automaton has 391 states and 433 transitions. Word has length 217 [2019-05-23 11:16:15,437 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:15,437 INFO L146 ILogger]: Abstraction has 391 states and 433 transitions. [2019-05-23 11:16:15,437 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:16:15,437 INFO L146 ILogger]: Start isEmpty. Operand 391 states and 433 transitions. [2019-05-23 11:16:15,438 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 223 [2019-05-23 11:16:15,438 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:15,439 INFO L146 ILogger]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:15,439 INFO L146 ILogger]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:15,439 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:15,439 INFO L146 ILogger]: Analyzing trace with hash -100182729, now seen corresponding path program 41 times [2019-05-23 11:16:15,439 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:15,440 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:15,440 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:15,440 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:15,441 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:15,453 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:16,501 INFO L146 ILogger]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:16,501 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:16,502 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:16,510 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:16,614 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2019-05-23 11:16:16,614 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:16,616 INFO L146 ILogger]: Trace formula consists of 323 conjuncts, 43 conjunts are in the unsatisfiable core [2019-05-23 11:16:16,619 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:16,660 INFO L146 ILogger]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:16,679 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:16,679 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2019-05-23 11:16:16,679 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:16:16,680 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:16:16,680 INFO L146 ILogger]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:16:16,680 INFO L146 ILogger]: Start difference. First operand 391 states and 433 transitions. Second operand 45 states. [2019-05-23 11:16:17,133 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:17,134 INFO L146 ILogger]: Finished difference Result 422 states and 467 transitions. [2019-05-23 11:16:17,134 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-05-23 11:16:17,134 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 222 [2019-05-23 11:16:17,134 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:17,136 INFO L146 ILogger]: With dead ends: 422 [2019-05-23 11:16:17,136 INFO L146 ILogger]: Without dead ends: 408 [2019-05-23 11:16:17,137 INFO L146 ILogger]: 0 DeclaredPredicates, 265 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:16:17,138 INFO L146 ILogger]: Start minimizeSevpa. Operand 408 states. [2019-05-23 11:16:17,142 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 408 to 400. [2019-05-23 11:16:17,142 INFO L146 ILogger]: Start removeUnreachable. Operand 400 states. [2019-05-23 11:16:17,143 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 400 states to 400 states and 443 transitions. [2019-05-23 11:16:17,143 INFO L146 ILogger]: Start accepts. Automaton has 400 states and 443 transitions. Word has length 222 [2019-05-23 11:16:17,143 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:17,143 INFO L146 ILogger]: Abstraction has 400 states and 443 transitions. [2019-05-23 11:16:17,144 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:16:17,144 INFO L146 ILogger]: Start isEmpty. Operand 400 states and 443 transitions. [2019-05-23 11:16:17,145 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 228 [2019-05-23 11:16:17,145 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:17,145 INFO L146 ILogger]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:17,145 INFO L146 ILogger]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:17,146 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:17,146 INFO L146 ILogger]: Analyzing trace with hash 908599906, now seen corresponding path program 42 times [2019-05-23 11:16:17,146 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:17,146 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:17,147 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:17,147 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:17,147 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:17,158 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:18,101 INFO L146 ILogger]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:18,101 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:18,101 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:18,110 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:18,218 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2019-05-23 11:16:18,218 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:18,220 INFO L146 ILogger]: Trace formula consists of 330 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:16:18,223 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:18,270 INFO L146 ILogger]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:18,289 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:18,289 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2019-05-23 11:16:18,289 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:16:18,290 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:16:18,290 INFO L146 ILogger]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:16:18,290 INFO L146 ILogger]: Start difference. First operand 400 states and 443 transitions. Second operand 46 states. [2019-05-23 11:16:19,713 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:19,714 INFO L146 ILogger]: Finished difference Result 431 states and 477 transitions. [2019-05-23 11:16:19,714 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:16:19,714 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 227 [2019-05-23 11:16:19,715 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:19,716 INFO L146 ILogger]: With dead ends: 431 [2019-05-23 11:16:19,716 INFO L146 ILogger]: Without dead ends: 417 [2019-05-23 11:16:19,716 INFO L146 ILogger]: 0 DeclaredPredicates, 271 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:16:19,717 INFO L146 ILogger]: Start minimizeSevpa. Operand 417 states. [2019-05-23 11:16:19,720 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 417 to 409. [2019-05-23 11:16:19,720 INFO L146 ILogger]: Start removeUnreachable. Operand 409 states. [2019-05-23 11:16:19,720 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 409 states to 409 states and 453 transitions. [2019-05-23 11:16:19,721 INFO L146 ILogger]: Start accepts. Automaton has 409 states and 453 transitions. Word has length 227 [2019-05-23 11:16:19,721 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:19,721 INFO L146 ILogger]: Abstraction has 409 states and 453 transitions. [2019-05-23 11:16:19,721 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:16:19,721 INFO L146 ILogger]: Start isEmpty. Operand 409 states and 453 transitions. [2019-05-23 11:16:19,722 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 233 [2019-05-23 11:16:19,722 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:19,722 INFO L146 ILogger]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:19,723 INFO L146 ILogger]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:19,723 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:19,723 INFO L146 ILogger]: Analyzing trace with hash -1461725161, now seen corresponding path program 43 times [2019-05-23 11:16:19,723 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:19,723 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:19,724 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:19,724 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:19,724 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:19,736 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:20,758 INFO L146 ILogger]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:20,759 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:20,759 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:20,768 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:20,825 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:20,827 INFO L146 ILogger]: Trace formula consists of 337 conjuncts, 45 conjunts are in the unsatisfiable core [2019-05-23 11:16:20,829 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:20,986 INFO L146 ILogger]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:21,035 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:21,035 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2019-05-23 11:16:21,036 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:16:21,036 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:16:21,037 INFO L146 ILogger]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:16:21,037 INFO L146 ILogger]: Start difference. First operand 409 states and 453 transitions. Second operand 47 states. [2019-05-23 11:16:21,769 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:21,769 INFO L146 ILogger]: Finished difference Result 440 states and 487 transitions. [2019-05-23 11:16:21,769 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:16:21,769 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 232 [2019-05-23 11:16:21,770 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:21,771 INFO L146 ILogger]: With dead ends: 440 [2019-05-23 11:16:21,771 INFO L146 ILogger]: Without dead ends: 426 [2019-05-23 11:16:21,771 INFO L146 ILogger]: 0 DeclaredPredicates, 277 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:16:21,772 INFO L146 ILogger]: Start minimizeSevpa. Operand 426 states. [2019-05-23 11:16:21,775 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 426 to 418. [2019-05-23 11:16:21,775 INFO L146 ILogger]: Start removeUnreachable. Operand 418 states. [2019-05-23 11:16:21,776 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 418 states to 418 states and 463 transitions. [2019-05-23 11:16:21,776 INFO L146 ILogger]: Start accepts. Automaton has 418 states and 463 transitions. Word has length 232 [2019-05-23 11:16:21,777 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:21,777 INFO L146 ILogger]: Abstraction has 418 states and 463 transitions. [2019-05-23 11:16:21,777 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:16:21,777 INFO L146 ILogger]: Start isEmpty. Operand 418 states and 463 transitions. [2019-05-23 11:16:21,778 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 238 [2019-05-23 11:16:21,778 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:21,779 INFO L146 ILogger]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:21,779 INFO L146 ILogger]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:21,779 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:21,779 INFO L146 ILogger]: Analyzing trace with hash 1653500802, now seen corresponding path program 44 times [2019-05-23 11:16:21,779 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:21,779 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:21,780 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:21,780 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:21,780 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:21,791 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:22,794 INFO L146 ILogger]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:22,794 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:22,794 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:22,803 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:22,852 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:22,852 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:22,856 INFO L146 ILogger]: Trace formula consists of 344 conjuncts, 46 conjunts are in the unsatisfiable core [2019-05-23 11:16:22,858 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:22,951 INFO L146 ILogger]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:22,979 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:22,980 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2019-05-23 11:16:22,980 INFO L146 ILogger]: Interpolant automaton has 48 states [2019-05-23 11:16:22,981 INFO L146 ILogger]: Constructing interpolant automaton starting with 48 interpolants. [2019-05-23 11:16:22,982 INFO L146 ILogger]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:16:22,982 INFO L146 ILogger]: Start difference. First operand 418 states and 463 transitions. Second operand 48 states. [2019-05-23 11:16:23,935 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:23,935 INFO L146 ILogger]: Finished difference Result 449 states and 497 transitions. [2019-05-23 11:16:23,935 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-05-23 11:16:23,935 INFO L146 ILogger]: Start accepts. Automaton has 48 states. Word has length 237 [2019-05-23 11:16:23,936 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:23,938 INFO L146 ILogger]: With dead ends: 449 [2019-05-23 11:16:23,938 INFO L146 ILogger]: Without dead ends: 435 [2019-05-23 11:16:23,938 INFO L146 ILogger]: 0 DeclaredPredicates, 283 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:16:23,939 INFO L146 ILogger]: Start minimizeSevpa. Operand 435 states. [2019-05-23 11:16:23,943 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 435 to 427. [2019-05-23 11:16:23,943 INFO L146 ILogger]: Start removeUnreachable. Operand 427 states. [2019-05-23 11:16:23,944 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 427 states to 427 states and 473 transitions. [2019-05-23 11:16:23,944 INFO L146 ILogger]: Start accepts. Automaton has 427 states and 473 transitions. Word has length 237 [2019-05-23 11:16:23,944 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:23,944 INFO L146 ILogger]: Abstraction has 427 states and 473 transitions. [2019-05-23 11:16:23,945 INFO L146 ILogger]: Interpolant automaton has 48 states. [2019-05-23 11:16:23,945 INFO L146 ILogger]: Start isEmpty. Operand 427 states and 473 transitions. [2019-05-23 11:16:23,946 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 243 [2019-05-23 11:16:23,946 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:23,946 INFO L146 ILogger]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:23,946 INFO L146 ILogger]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:23,946 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:23,946 INFO L146 ILogger]: Analyzing trace with hash 345654007, now seen corresponding path program 45 times [2019-05-23 11:16:23,946 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:23,947 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:23,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:23,947 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:23,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:23,958 INFO L146 ILogger]: Conjunction of SSA is unsat