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_two_index_08_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:34,449 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:34,451 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:34,463 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:34,464 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:34,465 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:34,466 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:34,468 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:34,470 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:34,471 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:34,472 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:34,472 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:34,473 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:34,474 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:34,476 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:34,476 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:34,477 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:34,479 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:34,481 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:34,483 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:34,484 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:34,486 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:34,488 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:34,489 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:34,489 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:34,490 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:34,493 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:34,494 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:34,495 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:34,495 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:34,496 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:34,497 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:34,498 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:34,498 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:34,499 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:34,499 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:34,500 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:34,500 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:34,501 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:34,502 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:34,517 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:34,517 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:34,518 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:34,518 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:34,519 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:34,519 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:34,519 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:34,519 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:34,520 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:34,520 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:34,520 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:34,520 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:34,520 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:34,521 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:34,521 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:34,521 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:34,521 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:34,521 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:34,522 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:34,522 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:34,522 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:34,522 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:34,522 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:34,523 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:34,523 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:34,523 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:34,523 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:34,523 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:34,524 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 11:20:34,555 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:34,572 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:34,577 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:34,579 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:34,579 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:34,580 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_two_index_08_true-unreach-call.i [2019-05-23 11:20:34,649 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67e0e7d7/704a05c7de794874b3b6fa083bfbef65/FLAGcc1bd6b6e [2019-05-23 11:20:35,061 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:35,061 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_two_index_08_true-unreach-call.i [2019-05-23 11:20:35,070 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67e0e7d7/704a05c7de794874b3b6fa083bfbef65/FLAGcc1bd6b6e [2019-05-23 11:20:35,435 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67e0e7d7/704a05c7de794874b3b6fa083bfbef65 [2019-05-23 11:20:35,444 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:35,446 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:35,447 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:35,447 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:35,451 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:35,452 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,455 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d38e8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35, skipping insertion in model container [2019-05-23 11:20:35,455 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,463 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:35,483 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:35,693 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:35,698 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:35,740 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:35,776 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:35,777 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35 WrapperNode [2019-05-23 11:20:35,778 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:35,779 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:35,779 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:35,780 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:35,792 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,810 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,841 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:35,842 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:35,842 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:35,842 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:35,855 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,855 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,857 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,858 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,874 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,883 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,887 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... [2019-05-23 11:20:35,892 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:35,895 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:35,895 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:35,896 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:35,897 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:20:36,088 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:20:36,088 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:36,088 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:36,088 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:36,089 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:36,089 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:36,509 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:36,509 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:20:36,510 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:36 BoogieIcfgContainer [2019-05-23 11:20:36,510 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:36,511 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:36,511 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:36,514 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:36,515 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:35" (1/3) ... [2019-05-23 11:20:36,516 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14452544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:36, skipping insertion in model container [2019-05-23 11:20:36,516 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:35" (2/3) ... [2019-05-23 11:20:36,516 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14452544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:36, skipping insertion in model container [2019-05-23 11:20:36,516 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:36" (3/3) ... [2019-05-23 11:20:36,518 INFO L146 ILogger]: Analyzing ICFG standard_two_index_08_true-unreach-call.i [2019-05-23 11:20:36,528 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:36,537 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:36,549 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:36,579 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:36,580 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:36,580 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:36,580 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:36,580 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:36,580 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:36,580 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:36,581 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:36,581 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:36,596 INFO L146 ILogger]: Start isEmpty. Operand 43 states. [2019-05-23 11:20:36,603 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:36,603 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:36,604 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] [2019-05-23 11:20:36,607 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:36,612 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:36,613 INFO L146 ILogger]: Analyzing trace with hash -1541380129, now seen corresponding path program 1 times [2019-05-23 11:20:36,614 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:36,615 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:36,663 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:36,663 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:36,663 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:36,708 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:36,750 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 11:20:36,753 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:36,753 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:36,757 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:36,767 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:36,768 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:36,770 INFO L146 ILogger]: Start difference. First operand 43 states. Second operand 2 states. [2019-05-23 11:20:36,786 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:36,786 INFO L146 ILogger]: Finished difference Result 73 states and 83 transitions. [2019-05-23 11:20:36,786 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:36,787 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:20:36,788 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:36,796 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:20:36,797 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:20:36,800 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:36,815 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:20:36,827 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:20:36,828 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:20:36,829 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:20:36,831 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 21 [2019-05-23 11:20:36,831 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:36,831 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:20:36,832 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:36,832 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:20:36,833 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:36,833 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:36,833 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] [2019-05-23 11:20:36,833 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:36,834 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:36,834 INFO L146 ILogger]: Analyzing trace with hash 805843927, now seen corresponding path program 1 times [2019-05-23 11:20:36,834 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:36,834 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:36,835 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:36,836 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:36,836 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:36,860 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:36,921 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 11:20:36,921 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:36,921 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:36,923 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:36,924 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:36,924 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:36,924 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2019-05-23 11:20:37,030 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:37,031 INFO L146 ILogger]: Finished difference Result 62 states and 66 transitions. [2019-05-23 11:20:37,031 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:37,031 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:20:37,032 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:37,033 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:20:37,033 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:20:37,035 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 11:20:37,036 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:20:37,043 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-05-23 11:20:37,043 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:20:37,044 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-05-23 11:20:37,044 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 21 [2019-05-23 11:20:37,045 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:37,045 INFO L146 ILogger]: Abstraction has 36 states and 38 transitions. [2019-05-23 11:20:37,045 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:37,045 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 38 transitions. [2019-05-23 11:20:37,046 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:20:37,046 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:37,046 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:37,047 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:37,047 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:37,048 INFO L146 ILogger]: Analyzing trace with hash 1928914446, now seen corresponding path program 1 times [2019-05-23 11:20:37,048 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:37,048 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:37,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,051 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:37,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,088 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,124 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:37,124 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:37,124 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:37,125 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:37,125 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:37,125 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:37,126 INFO L146 ILogger]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2019-05-23 11:20:37,226 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:37,227 INFO L146 ILogger]: Finished difference Result 68 states and 71 transitions. [2019-05-23 11:20:37,227 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:37,227 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 26 [2019-05-23 11:20:37,228 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:37,229 INFO L146 ILogger]: With dead ends: 68 [2019-05-23 11:20:37,229 INFO L146 ILogger]: Without dead ends: 53 [2019-05-23 11:20:37,230 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 11:20:37,231 INFO L146 ILogger]: Start minimizeSevpa. Operand 53 states. [2019-05-23 11:20:37,236 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 53 to 37. [2019-05-23 11:20:37,236 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:20:37,237 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-05-23 11:20:37,237 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 26 [2019-05-23 11:20:37,237 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:37,238 INFO L146 ILogger]: Abstraction has 37 states and 39 transitions. [2019-05-23 11:20:37,238 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:37,238 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 39 transitions. [2019-05-23 11:20:37,239 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:20:37,239 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:37,239 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:37,240 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:37,240 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:37,240 INFO L146 ILogger]: Analyzing trace with hash 876855147, now seen corresponding path program 1 times [2019-05-23 11:20:37,240 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:37,241 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:37,241 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,242 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:37,242 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,264 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,366 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:37,367 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:37,367 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 11:20:37,385 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:37,427 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,429 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:37,436 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:37,477 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:37,497 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:37,498 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:37,498 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:37,498 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:37,500 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:37,501 INFO L146 ILogger]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2019-05-23 11:20:37,624 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:37,625 INFO L146 ILogger]: Finished difference Result 85 states and 89 transitions. [2019-05-23 11:20:37,625 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:37,625 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 32 [2019-05-23 11:20:37,625 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:37,626 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:20:37,626 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:20:37,627 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 32 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 11:20:37,627 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:20:37,632 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 42. [2019-05-23 11:20:37,632 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:20:37,633 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-05-23 11:20:37,633 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2019-05-23 11:20:37,633 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:37,633 INFO L146 ILogger]: Abstraction has 42 states and 44 transitions. [2019-05-23 11:20:37,633 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:37,634 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 44 transitions. [2019-05-23 11:20:37,634 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:20:37,634 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:37,635 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:37,635 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:37,635 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:37,635 INFO L146 ILogger]: Analyzing trace with hash -411413292, now seen corresponding path program 2 times [2019-05-23 11:20:37,635 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:37,635 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:37,636 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,637 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:37,637 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:37,653 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,806 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:37,806 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:37,806 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 11:20:37,824 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:37,891 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:37,891 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:37,892 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:37,895 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:38,005 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:38,036 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:38,036 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:20:38,036 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:20:38,037 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:20:38,038 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:38,038 INFO L146 ILogger]: Start difference. First operand 42 states and 44 transitions. Second operand 6 states. [2019-05-23 11:20:38,327 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:38,328 INFO L146 ILogger]: Finished difference Result 90 states and 94 transitions. [2019-05-23 11:20:38,331 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:38,332 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 37 [2019-05-23 11:20:38,332 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:38,333 INFO L146 ILogger]: With dead ends: 90 [2019-05-23 11:20:38,333 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:20:38,334 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 37 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 11:20:38,334 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:20:38,339 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 47. [2019-05-23 11:20:38,339 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:20:38,340 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2019-05-23 11:20:38,340 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 37 [2019-05-23 11:20:38,340 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:38,340 INFO L146 ILogger]: Abstraction has 47 states and 49 transitions. [2019-05-23 11:20:38,341 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:20:38,341 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 49 transitions. [2019-05-23 11:20:38,342 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:20:38,342 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:38,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:38,342 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:38,343 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:38,343 INFO L146 ILogger]: Analyzing trace with hash -1153058549, now seen corresponding path program 3 times [2019-05-23 11:20:38,343 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:38,343 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:38,344 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,345 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:38,345 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,375 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:38,442 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:38,442 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:38,442 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 11:20:38,461 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:38,490 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:20:38,490 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:38,491 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:38,492 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:38,523 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:38,552 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:38,553 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2019-05-23 11:20:38,553 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:20:38,554 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:20:38,554 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:38,554 INFO L146 ILogger]: Start difference. First operand 47 states and 49 transitions. Second operand 7 states. [2019-05-23 11:20:38,840 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:38,841 INFO L146 ILogger]: Finished difference Result 119 states and 125 transitions. [2019-05-23 11:20:38,842 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:20:38,842 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 42 [2019-05-23 11:20:38,843 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:38,844 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:20:38,844 INFO L146 ILogger]: Without dead ends: 96 [2019-05-23 11:20:38,846 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:38,847 INFO L146 ILogger]: Start minimizeSevpa. Operand 96 states. [2019-05-23 11:20:38,860 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 96 to 63. [2019-05-23 11:20:38,860 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:20:38,864 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2019-05-23 11:20:38,864 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 42 [2019-05-23 11:20:38,864 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:38,865 INFO L146 ILogger]: Abstraction has 63 states and 65 transitions. [2019-05-23 11:20:38,865 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:20:38,865 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 65 transitions. [2019-05-23 11:20:38,868 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:20:38,868 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:38,868 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:38,869 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:38,869 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:38,869 INFO L146 ILogger]: Analyzing trace with hash 1070488136, now seen corresponding path program 4 times [2019-05-23 11:20:38,869 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:38,869 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:38,873 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,874 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:38,874 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:38,920 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,075 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:39,076 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:39,076 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 11:20:39,088 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:39,121 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:39,121 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,122 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:39,125 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:39,155 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:39,178 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:39,178 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:20:39,179 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:39,179 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:39,179 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:39,179 INFO L146 ILogger]: Start difference. First operand 63 states and 65 transitions. Second operand 9 states. [2019-05-23 11:20:39,323 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:39,323 INFO L146 ILogger]: Finished difference Result 113 states and 117 transitions. [2019-05-23 11:20:39,324 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:39,324 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 58 [2019-05-23 11:20:39,325 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:39,325 INFO L146 ILogger]: With dead ends: 113 [2019-05-23 11:20:39,326 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:20:39,326 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:39,327 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:20:39,331 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 68. [2019-05-23 11:20:39,332 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:20:39,332 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2019-05-23 11:20:39,333 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 58 [2019-05-23 11:20:39,333 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:39,333 INFO L146 ILogger]: Abstraction has 68 states and 70 transitions. [2019-05-23 11:20:39,333 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:39,333 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 70 transitions. [2019-05-23 11:20:39,334 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 64 [2019-05-23 11:20:39,334 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:39,335 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:39,335 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:39,335 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:39,335 INFO L146 ILogger]: Analyzing trace with hash 1820626545, now seen corresponding path program 5 times [2019-05-23 11:20:39,336 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:39,336 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:39,336 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:39,336 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:39,337 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:39,356 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,521 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:39,521 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:39,521 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 11:20:39,533 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:39,609 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:20:39,609 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,610 INFO L146 ILogger]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:39,613 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:39,702 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:20:39,721 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:39,721 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2019-05-23 11:20:39,722 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:20:39,722 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:20:39,722 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:39,722 INFO L146 ILogger]: Start difference. First operand 68 states and 70 transitions. Second operand 11 states. [2019-05-23 11:20:40,147 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:40,147 INFO L146 ILogger]: Finished difference Result 164 states and 171 transitions. [2019-05-23 11:20:40,148 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:20:40,148 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 63 [2019-05-23 11:20:40,148 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:40,150 INFO L146 ILogger]: With dead ends: 164 [2019-05-23 11:20:40,150 INFO L146 ILogger]: Without dead ends: 135 [2019-05-23 11:20:40,151 INFO L146 ILogger]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:40,152 INFO L146 ILogger]: Start minimizeSevpa. Operand 135 states. [2019-05-23 11:20:40,159 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 135 to 89. [2019-05-23 11:20:40,159 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:20:40,160 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2019-05-23 11:20:40,161 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 63 [2019-05-23 11:20:40,161 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:40,161 INFO L146 ILogger]: Abstraction has 89 states and 91 transitions. [2019-05-23 11:20:40,161 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:20:40,162 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 91 transitions. [2019-05-23 11:20:40,163 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 85 [2019-05-23 11:20:40,163 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:40,163 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:40,164 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:40,164 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:40,164 INFO L146 ILogger]: Analyzing trace with hash 2137983845, now seen corresponding path program 6 times [2019-05-23 11:20:40,164 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:40,165 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:40,165 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:40,166 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:40,166 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:40,197 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:40,573 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:40,573 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:40,573 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 11:20:40,590 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:40,739 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:40,739 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:40,741 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:40,745 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:41,105 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-05-23 11:20:41,125 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:41,125 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 14 [2019-05-23 11:20:41,126 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:20:41,126 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:20:41,126 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:41,127 INFO L146 ILogger]: Start difference. First operand 89 states and 91 transitions. Second operand 14 states. [2019-05-23 11:20:41,361 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:41,361 INFO L146 ILogger]: Finished difference Result 204 states and 211 transitions. [2019-05-23 11:20:41,362 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:41,362 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 84 [2019-05-23 11:20:41,362 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:41,363 INFO L146 ILogger]: With dead ends: 204 [2019-05-23 11:20:41,364 INFO L146 ILogger]: Without dead ends: 169 [2019-05-23 11:20:41,365 INFO L146 ILogger]: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:41,365 INFO L146 ILogger]: Start minimizeSevpa. Operand 169 states. [2019-05-23 11:20:41,372 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 169 to 110. [2019-05-23 11:20:41,372 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:20:41,373 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2019-05-23 11:20:41,373 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 84 [2019-05-23 11:20:41,374 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:41,374 INFO L146 ILogger]: Abstraction has 110 states and 112 transitions. [2019-05-23 11:20:41,374 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:20:41,374 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 112 transitions. [2019-05-23 11:20:41,376 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:20:41,376 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:41,376 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:41,376 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:41,377 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:41,377 INFO L146 ILogger]: Analyzing trace with hash -1782519285, now seen corresponding path program 7 times [2019-05-23 11:20:41,377 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:41,377 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:41,378 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:41,378 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:41,378 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:41,399 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:41,618 INFO L146 ILogger]: Checked inductivity of 382 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:41,618 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:41,618 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 11:20:41,630 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:41,671 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:41,672 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:20:41,680 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:41,736 INFO L146 ILogger]: Checked inductivity of 382 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:41,758 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:41,758 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:20:41,759 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:20:41,759 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:20:41,759 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:41,760 INFO L146 ILogger]: Start difference. First operand 110 states and 112 transitions. Second operand 16 states. [2019-05-23 11:20:42,059 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:42,060 INFO L146 ILogger]: Finished difference Result 185 states and 189 transitions. [2019-05-23 11:20:42,060 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:20:42,060 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 105 [2019-05-23 11:20:42,061 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:42,062 INFO L146 ILogger]: With dead ends: 185 [2019-05-23 11:20:42,063 INFO L146 ILogger]: Without dead ends: 144 [2019-05-23 11:20:42,064 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:42,064 INFO L146 ILogger]: Start minimizeSevpa. Operand 144 states. [2019-05-23 11:20:42,069 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 144 to 115. [2019-05-23 11:20:42,069 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:20:42,070 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2019-05-23 11:20:42,070 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 105 [2019-05-23 11:20:42,071 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:42,071 INFO L146 ILogger]: Abstraction has 115 states and 117 transitions. [2019-05-23 11:20:42,071 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:20:42,071 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 117 transitions. [2019-05-23 11:20:42,073 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:20:42,073 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:42,073 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:42,073 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:42,074 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:42,074 INFO L146 ILogger]: Analyzing trace with hash 1755325122, now seen corresponding path program 8 times [2019-05-23 11:20:42,074 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:42,074 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:42,075 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,075 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:42,075 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,094 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:42,359 INFO L146 ILogger]: Checked inductivity of 443 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:42,359 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:42,359 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:20:42,370 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:42,397 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:42,397 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:42,398 INFO L146 ILogger]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:20:42,401 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:42,437 INFO L146 ILogger]: Checked inductivity of 443 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:42,457 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:42,458 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:20:42,459 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:20:42,459 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:20:42,459 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:42,459 INFO L146 ILogger]: Start difference. First operand 115 states and 117 transitions. Second operand 17 states. [2019-05-23 11:20:42,654 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:42,655 INFO L146 ILogger]: Finished difference Result 190 states and 194 transitions. [2019-05-23 11:20:42,655 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:20:42,655 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 110 [2019-05-23 11:20:42,656 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:42,657 INFO L146 ILogger]: With dead ends: 190 [2019-05-23 11:20:42,657 INFO L146 ILogger]: Without dead ends: 149 [2019-05-23 11:20:42,657 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:42,658 INFO L146 ILogger]: Start minimizeSevpa. Operand 149 states. [2019-05-23 11:20:42,663 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 149 to 120. [2019-05-23 11:20:42,663 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:20:42,664 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2019-05-23 11:20:42,664 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 110 [2019-05-23 11:20:42,664 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:42,664 INFO L146 ILogger]: Abstraction has 120 states and 122 transitions. [2019-05-23 11:20:42,664 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:20:42,665 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 122 transitions. [2019-05-23 11:20:42,666 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:20:42,666 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:42,667 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:42,667 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:42,667 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:42,667 INFO L146 ILogger]: Analyzing trace with hash 1355465835, now seen corresponding path program 9 times [2019-05-23 11:20:42,668 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:42,668 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:42,668 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,669 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:42,669 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,702 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,540 INFO L146 ILogger]: Checked inductivity of 509 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:43,541 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:43,541 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 11:20:43,552 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:43,595 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:20:43,595 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,596 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:43,597 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:43,682 INFO L146 ILogger]: Checked inductivity of 509 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2019-05-23 11:20:43,702 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:43,702 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 20 [2019-05-23 11:20:43,703 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:20:43,703 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:20:43,704 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:43,704 INFO L146 ILogger]: Start difference. First operand 120 states and 122 transitions. Second operand 20 states. [2019-05-23 11:20:44,014 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:44,015 INFO L146 ILogger]: Finished difference Result 259 states and 267 transitions. [2019-05-23 11:20:44,015 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:20:44,015 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 115 [2019-05-23 11:20:44,016 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:44,017 INFO L146 ILogger]: With dead ends: 259 [2019-05-23 11:20:44,017 INFO L146 ILogger]: Without dead ends: 218 [2019-05-23 11:20:44,018 INFO L146 ILogger]: 0 DeclaredPredicates, 131 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:44,018 INFO L146 ILogger]: Start minimizeSevpa. Operand 218 states. [2019-05-23 11:20:44,023 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 218 to 146. [2019-05-23 11:20:44,024 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:20:44,024 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2019-05-23 11:20:44,025 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 115 [2019-05-23 11:20:44,025 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:44,025 INFO L146 ILogger]: Abstraction has 146 states and 148 transitions. [2019-05-23 11:20:44,025 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:20:44,025 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 148 transitions. [2019-05-23 11:20:44,028 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 142 [2019-05-23 11:20:44,028 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:44,028 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:44,028 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:44,029 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:44,029 INFO L146 ILogger]: Analyzing trace with hash 412573896, now seen corresponding path program 10 times [2019-05-23 11:20:44,029 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:44,029 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:44,030 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:44,030 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:44,030 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:44,049 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:45,133 INFO L146 ILogger]: Checked inductivity of 848 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:45,134 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:45,134 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 11:20:45,144 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:45,488 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:45,488 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:45,490 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:45,492 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:45,579 INFO L146 ILogger]: Checked inductivity of 848 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2019-05-23 11:20:45,601 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:45,601 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 8] total 24 [2019-05-23 11:20:45,602 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:20:45,602 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:20:45,603 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:45,603 INFO L146 ILogger]: Start difference. First operand 146 states and 148 transitions. Second operand 24 states. [2019-05-23 11:20:45,997 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:45,997 INFO L146 ILogger]: Finished difference Result 304 states and 312 transitions. [2019-05-23 11:20:45,998 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:20:45,998 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 141 [2019-05-23 11:20:45,999 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:46,001 INFO L146 ILogger]: With dead ends: 304 [2019-05-23 11:20:46,001 INFO L146 ILogger]: Without dead ends: 257 [2019-05-23 11:20:46,002 INFO L146 ILogger]: 0 DeclaredPredicates, 161 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:46,003 INFO L146 ILogger]: Start minimizeSevpa. Operand 257 states. [2019-05-23 11:20:46,007 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 257 to 172. [2019-05-23 11:20:46,007 INFO L146 ILogger]: Start removeUnreachable. Operand 172 states. [2019-05-23 11:20:46,008 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2019-05-23 11:20:46,008 INFO L146 ILogger]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 141 [2019-05-23 11:20:46,009 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:46,009 INFO L146 ILogger]: Abstraction has 172 states and 174 transitions. [2019-05-23 11:20:46,009 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:20:46,009 INFO L146 ILogger]: Start isEmpty. Operand 172 states and 174 transitions. [2019-05-23 11:20:46,011 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:20:46,012 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:46,012 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:46,012 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:46,012 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:46,013 INFO L146 ILogger]: Analyzing trace with hash -851700891, now seen corresponding path program 11 times [2019-05-23 11:20:46,013 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:46,013 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:46,014 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:46,014 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:46,014 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:46,035 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:46,492 INFO L146 ILogger]: Checked inductivity of 1273 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:46,492 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:46,493 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 11:20:46,501 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:47,672 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2019-05-23 11:20:47,672 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,676 INFO L146 ILogger]: Trace formula consists of 258 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:20:47,678 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:47,710 INFO L146 ILogger]: Checked inductivity of 1273 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:47,730 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:47,730 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-05-23 11:20:47,731 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:20:47,731 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:20:47,732 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:47,732 INFO L146 ILogger]: Start difference. First operand 172 states and 174 transitions. Second operand 26 states. [2019-05-23 11:20:48,022 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:48,023 INFO L146 ILogger]: Finished difference Result 272 states and 276 transitions. [2019-05-23 11:20:48,023 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:20:48,024 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 167 [2019-05-23 11:20:48,024 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:48,025 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:20:48,025 INFO L146 ILogger]: Without dead ends: 219 [2019-05-23 11:20:48,026 INFO L146 ILogger]: 0 DeclaredPredicates, 191 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:48,027 INFO L146 ILogger]: Start minimizeSevpa. Operand 219 states. [2019-05-23 11:20:48,033 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 219 to 177. [2019-05-23 11:20:48,033 INFO L146 ILogger]: Start removeUnreachable. Operand 177 states. [2019-05-23 11:20:48,034 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2019-05-23 11:20:48,034 INFO L146 ILogger]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 167 [2019-05-23 11:20:48,034 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:48,035 INFO L146 ILogger]: Abstraction has 177 states and 179 transitions. [2019-05-23 11:20:48,035 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:20:48,035 INFO L146 ILogger]: Start isEmpty. Operand 177 states and 179 transitions. [2019-05-23 11:20:48,036 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 173 [2019-05-23 11:20:48,036 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:48,036 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:48,036 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:48,037 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:48,037 INFO L146 ILogger]: Analyzing trace with hash -731851300, now seen corresponding path program 12 times [2019-05-23 11:20:48,037 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:48,037 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:48,038 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:48,038 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:48,038 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:48,062 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:48,505 INFO L146 ILogger]: Checked inductivity of 1384 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:48,505 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:48,505 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:20:48,515 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:49,265 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:20:49,265 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:49,267 INFO L146 ILogger]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:49,270 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:49,492 INFO L146 ILogger]: Checked inductivity of 1384 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2019-05-23 11:20:49,512 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:49,512 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 9] total 30 [2019-05-23 11:20:49,513 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:20:49,513 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:20:49,514 INFO L146 ILogger]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:20:49,514 INFO L146 ILogger]: Start difference. First operand 177 states and 179 transitions. Second operand 30 states. [2019-05-23 11:20:50,361 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:50,362 INFO L146 ILogger]: Finished difference Result 359 states and 368 transitions. [2019-05-23 11:20:50,362 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:20:50,362 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 172 [2019-05-23 11:20:50,363 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:50,364 INFO L146 ILogger]: With dead ends: 359 [2019-05-23 11:20:50,364 INFO L146 ILogger]: Without dead ends: 306 [2019-05-23 11:20:50,365 INFO L146 ILogger]: 0 DeclaredPredicates, 197 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:20:50,366 INFO L146 ILogger]: Start minimizeSevpa. Operand 306 states. [2019-05-23 11:20:50,371 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 306 to 208. [2019-05-23 11:20:50,371 INFO L146 ILogger]: Start removeUnreachable. Operand 208 states. [2019-05-23 11:20:50,372 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2019-05-23 11:20:50,372 INFO L146 ILogger]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 172 [2019-05-23 11:20:50,372 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:50,372 INFO L146 ILogger]: Abstraction has 208 states and 210 transitions. [2019-05-23 11:20:50,373 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:20:50,373 INFO L146 ILogger]: Start isEmpty. Operand 208 states and 210 transitions. [2019-05-23 11:20:50,374 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 204 [2019-05-23 11:20:50,374 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:50,374 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:50,374 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:50,375 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:50,375 INFO L146 ILogger]: Analyzing trace with hash -733944158, now seen corresponding path program 13 times [2019-05-23 11:20:50,375 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:50,375 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:50,376 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,376 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:50,376 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,397 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,889 INFO L146 ILogger]: Checked inductivity of 2051 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:50,889 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:50,889 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 11:20:50,897 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:50,951 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,952 INFO L146 ILogger]: Trace formula consists of 309 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:20:50,955 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:51,021 INFO L146 ILogger]: Checked inductivity of 2051 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:51,039 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:51,040 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:20:51,040 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:20:51,040 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:20:51,041 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:20:51,041 INFO L146 ILogger]: Start difference. First operand 208 states and 210 transitions. Second operand 32 states. [2019-05-23 11:20:51,500 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:51,501 INFO L146 ILogger]: Finished difference Result 327 states and 331 transitions. [2019-05-23 11:20:51,501 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:20:51,501 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 203 [2019-05-23 11:20:51,502 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:51,504 INFO L146 ILogger]: With dead ends: 327 [2019-05-23 11:20:51,504 INFO L146 ILogger]: Without dead ends: 268 [2019-05-23 11:20:51,506 INFO L146 ILogger]: 0 DeclaredPredicates, 233 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:20:51,506 INFO L146 ILogger]: Start minimizeSevpa. Operand 268 states. [2019-05-23 11:20:51,511 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 268 to 213. [2019-05-23 11:20:51,511 INFO L146 ILogger]: Start removeUnreachable. Operand 213 states. [2019-05-23 11:20:51,512 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2019-05-23 11:20:51,512 INFO L146 ILogger]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 203 [2019-05-23 11:20:51,512 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:51,513 INFO L146 ILogger]: Abstraction has 213 states and 215 transitions. [2019-05-23 11:20:51,513 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:20:51,513 INFO L146 ILogger]: Start isEmpty. Operand 213 states and 215 transitions. [2019-05-23 11:20:51,514 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:20:51,514 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:51,514 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:51,514 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:51,515 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:51,515 INFO L146 ILogger]: Analyzing trace with hash 1789917593, now seen corresponding path program 14 times [2019-05-23 11:20:51,515 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:51,515 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:51,516 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:51,516 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:51,516 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:51,537 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:52,093 INFO L146 ILogger]: Checked inductivity of 2192 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:52,094 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:52,094 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 11:20:52,102 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:52,152 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:52,152 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:52,154 INFO L146 ILogger]: Trace formula consists of 316 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:20:52,157 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:52,264 INFO L146 ILogger]: Checked inductivity of 2192 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:52,293 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:52,293 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:20:52,294 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:20:52,294 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:20:52,295 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:20:52,295 INFO L146 ILogger]: Start difference. First operand 213 states and 215 transitions. Second operand 33 states. [2019-05-23 11:20:52,752 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:52,752 INFO L146 ILogger]: Finished difference Result 332 states and 336 transitions. [2019-05-23 11:20:52,753 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:20:52,753 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 208 [2019-05-23 11:20:52,753 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:52,755 INFO L146 ILogger]: With dead ends: 332 [2019-05-23 11:20:52,755 INFO L146 ILogger]: Without dead ends: 273 [2019-05-23 11:20:52,756 INFO L146 ILogger]: 0 DeclaredPredicates, 239 GetRequests, 208 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 11:20:52,757 INFO L146 ILogger]: Start minimizeSevpa. Operand 273 states. [2019-05-23 11:20:52,760 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 273 to 218. [2019-05-23 11:20:52,761 INFO L146 ILogger]: Start removeUnreachable. Operand 218 states. [2019-05-23 11:20:52,761 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 218 states to 218 states and 220 transitions. [2019-05-23 11:20:52,762 INFO L146 ILogger]: Start accepts. Automaton has 218 states and 220 transitions. Word has length 208 [2019-05-23 11:20:52,762 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:52,762 INFO L146 ILogger]: Abstraction has 218 states and 220 transitions. [2019-05-23 11:20:52,762 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:20:52,762 INFO L146 ILogger]: Start isEmpty. Operand 218 states and 220 transitions. [2019-05-23 11:20:52,763 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 214 [2019-05-23 11:20:52,763 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:52,764 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:52,764 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:52,764 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:52,764 INFO L146 ILogger]: Analyzing trace with hash -564582142, now seen corresponding path program 15 times [2019-05-23 11:20:52,764 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:52,765 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:52,765 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:52,765 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:52,766 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:52,795 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:54,496 INFO L146 ILogger]: Checked inductivity of 2338 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:54,497 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:54,497 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 11:20:54,505 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:54,640 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:20:54,640 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:54,641 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:54,644 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:54,868 INFO L146 ILogger]: Checked inductivity of 2338 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2019-05-23 11:20:54,906 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:54,906 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 10] total 37 [2019-05-23 11:20:54,907 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:20:54,908 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:20:54,909 INFO L146 ILogger]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:20:54,909 INFO L146 ILogger]: Start difference. First operand 218 states and 220 transitions. Second operand 37 states. [2019-05-23 11:20:56,610 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:56,611 INFO L146 ILogger]: Finished difference Result 419 states and 428 transitions. [2019-05-23 11:20:56,611 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:20:56,611 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 213 [2019-05-23 11:20:56,612 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:56,613 INFO L146 ILogger]: With dead ends: 419 [2019-05-23 11:20:56,613 INFO L146 ILogger]: Without dead ends: 360 [2019-05-23 11:20:56,614 INFO L146 ILogger]: 0 DeclaredPredicates, 245 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:20:56,615 INFO L146 ILogger]: Start minimizeSevpa. Operand 360 states. [2019-05-23 11:20:56,619 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 360 to 249. [2019-05-23 11:20:56,620 INFO L146 ILogger]: Start removeUnreachable. Operand 249 states. [2019-05-23 11:20:56,621 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2019-05-23 11:20:56,621 INFO L146 ILogger]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 213 [2019-05-23 11:20:56,622 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:56,622 INFO L146 ILogger]: Abstraction has 249 states and 251 transitions. [2019-05-23 11:20:56,622 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:20:56,622 INFO L146 ILogger]: Start isEmpty. Operand 249 states and 251 transitions. [2019-05-23 11:20:56,623 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 245 [2019-05-23 11:20:56,624 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:56,624 INFO L146 ILogger]: trace histogram [35, 35, 35, 35, 35, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:56,624 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:56,624 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:56,625 INFO L146 ILogger]: Analyzing trace with hash -756175978, now seen corresponding path program 16 times [2019-05-23 11:20:56,625 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:56,625 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:56,626 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:56,626 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:56,627 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:56,650 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:57,670 INFO L146 ILogger]: Checked inductivity of 3186 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:57,670 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:57,670 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 11:20:57,678 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:05,882 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:05,882 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:05,889 INFO L146 ILogger]: Trace formula consists of 367 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:21:05,892 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:05,971 INFO L146 ILogger]: Checked inductivity of 3186 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:06,006 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:06,006 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2019-05-23 11:21:06,007 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:21:06,007 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:21:06,008 INFO L146 ILogger]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:21:06,008 INFO L146 ILogger]: Start difference. First operand 249 states and 251 transitions. Second operand 39 states. [2019-05-23 11:21:06,440 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:06,440 INFO L146 ILogger]: Finished difference Result 387 states and 391 transitions. [2019-05-23 11:21:06,440 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:21:06,440 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 244 [2019-05-23 11:21:06,441 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:06,443 INFO L146 ILogger]: With dead ends: 387 [2019-05-23 11:21:06,443 INFO L146 ILogger]: Without dead ends: 322 [2019-05-23 11:21:06,444 INFO L146 ILogger]: 0 DeclaredPredicates, 281 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:21:06,444 INFO L146 ILogger]: Start minimizeSevpa. Operand 322 states. [2019-05-23 11:21:06,449 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 322 to 254. [2019-05-23 11:21:06,449 INFO L146 ILogger]: Start removeUnreachable. Operand 254 states. [2019-05-23 11:21:06,450 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 254 states to 254 states and 256 transitions. [2019-05-23 11:21:06,450 INFO L146 ILogger]: Start accepts. Automaton has 254 states and 256 transitions. Word has length 244 [2019-05-23 11:21:06,451 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:06,451 INFO L146 ILogger]: Abstraction has 254 states and 256 transitions. [2019-05-23 11:21:06,451 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:21:06,451 INFO L146 ILogger]: Start isEmpty. Operand 254 states and 256 transitions. [2019-05-23 11:21:06,452 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 250 [2019-05-23 11:21:06,452 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:06,452 INFO L146 ILogger]: trace histogram [36, 36, 36, 36, 36, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:06,453 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:06,453 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:06,453 INFO L146 ILogger]: Analyzing trace with hash 1170283135, now seen corresponding path program 17 times [2019-05-23 11:21:06,453 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:06,453 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:06,455 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:06,455 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:06,456 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:06,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:07,232 INFO L146 ILogger]: Checked inductivity of 3362 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:07,233 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:07,233 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 11:21:07,242 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1