java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/sorting_bubblesort_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:16:44,689 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:16:44,691 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:16:44,703 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:16:44,704 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:16:44,705 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:16:44,706 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:16:44,708 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:16:44,710 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:16:44,710 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:16:44,711 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:16:44,712 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:16:44,713 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:16:44,714 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:16:44,715 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:16:44,715 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:16:44,716 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:16:44,718 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:16:44,720 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:16:44,722 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:16:44,723 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:16:44,724 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:16:44,727 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-05-23 11:16:44,734 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:16:44,735 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:16:44,735 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:16:44,736 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:16:44,737 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:16:44,737 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:16:44,738 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:16:44,752 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:16:44,753 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:16:44,754 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:16:44,754 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:16:44,754 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:16:44,754 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:16:44,755 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:16:44,755 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:16:44,755 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:16:44,755 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:16:44,756 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:16:44,756 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:16:44,756 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:16:44,756 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:16:44,756 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:16:44,757 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:16:44,757 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:16:44,757 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:16:44,757 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:16:44,757 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:16:44,758 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:16:44,758 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:16:44,758 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:16:44,758 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:16:44,758 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:16:44,759 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:16:44,759 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:16:44,759 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:16:44,759 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 11:16:44,789 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:16:44,801 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:16:44,805 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:16:44,806 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:16:44,806 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:16:44,807 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/sorting_bubblesort_true-unreach-call_ground.i [2019-05-23 11:16:44,866 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f77feb7/45bf0fde81f34a99927aa46af5a9c423/FLAG00c83e8b3 [2019-05-23 11:16:45,270 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:16:45,271 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/sorting_bubblesort_true-unreach-call_ground.i [2019-05-23 11:16:45,277 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f77feb7/45bf0fde81f34a99927aa46af5a9c423/FLAG00c83e8b3 [2019-05-23 11:16:45,650 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f77feb7/45bf0fde81f34a99927aa46af5a9c423 [2019-05-23 11:16:45,659 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:16:45,661 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:16:45,663 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:45,663 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:16:45,666 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:16:45,667 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:45" (1/1) ... [2019-05-23 11:16:45,670 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442319f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45, skipping insertion in model container [2019-05-23 11:16:45,670 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:45" (1/1) ... [2019-05-23 11:16:45,678 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:16:45,695 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:16:45,917 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:45,921 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:16:45,941 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:45,962 INFO L146 ILogger]: Completed translation [2019-05-23 11:16:45,962 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45 WrapperNode [2019-05-23 11:16:45,963 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:45,964 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:45,964 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:16:45,964 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:16:45,973 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45" (1/1) ... [2019-05-23 11:16:45,981 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45" (1/1) ... [2019-05-23 11:16:46,003 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:46,003 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:16:46,004 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:16:46,004 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:16:46,012 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45" (1/1) ... [2019-05-23 11:16:46,013 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45" (1/1) ... [2019-05-23 11:16:46,015 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45" (1/1) ... [2019-05-23 11:16:46,015 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45" (1/1) ... [2019-05-23 11:16:46,021 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45" (1/1) ... [2019-05-23 11:16:46,119 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45" (1/1) ... [2019-05-23 11:16:46,120 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45" (1/1) ... [2019-05-23 11:16:46,122 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:16:46,123 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:16:46,123 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:16:46,123 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:16:46,124 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45" (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 11:16:46,192 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:16:46,192 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:16:46,192 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:16:46,192 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:16:46,192 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:16:46,193 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:16:46,633 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:16:46,634 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:16:46,635 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:46 BoogieIcfgContainer [2019-05-23 11:16:46,635 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:16:46,636 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:16:46,636 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:16:46,639 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:16:46,640 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:16:45" (1/3) ... [2019-05-23 11:16:46,640 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb923a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:46, skipping insertion in model container [2019-05-23 11:16:46,641 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:45" (2/3) ... [2019-05-23 11:16:46,641 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb923a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:46, skipping insertion in model container [2019-05-23 11:16:46,641 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:46" (3/3) ... [2019-05-23 11:16:46,643 INFO L146 ILogger]: Analyzing ICFG sorting_bubblesort_true-unreach-call_ground.i [2019-05-23 11:16:46,651 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:16:46,658 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:16:46,674 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:16:46,699 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:16:46,700 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:16:46,700 INFO L146 ILogger]: Hoare is true [2019-05-23 11:16:46,700 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:16:46,700 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:16:46,700 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:16:46,701 INFO L146 ILogger]: Difference is false [2019-05-23 11:16:46,701 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:16:46,701 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:16:46,715 INFO L146 ILogger]: Start isEmpty. Operand 54 states. [2019-05-23 11:16:46,722 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:16:46,722 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:46,723 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:46,725 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:46,731 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:46,731 INFO L146 ILogger]: Analyzing trace with hash 2102280557, now seen corresponding path program 1 times [2019-05-23 11:16:46,733 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:46,733 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:46,777 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:46,778 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:46,778 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:46,812 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:46,848 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 11:16:46,850 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:46,851 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:16:46,854 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:16:46,867 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:16:46,868 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:16:46,871 INFO L146 ILogger]: Start difference. First operand 54 states. Second operand 2 states. [2019-05-23 11:16:46,888 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:46,888 INFO L146 ILogger]: Finished difference Result 102 states and 120 transitions. [2019-05-23 11:16:46,889 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:16:46,890 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 20 [2019-05-23 11:16:46,890 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:46,899 INFO L146 ILogger]: With dead ends: 102 [2019-05-23 11:16:46,899 INFO L146 ILogger]: Without dead ends: 48 [2019-05-23 11:16:46,902 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 11:16:46,920 INFO L146 ILogger]: Start minimizeSevpa. Operand 48 states. [2019-05-23 11:16:46,935 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-05-23 11:16:46,936 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:16:46,938 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2019-05-23 11:16:46,939 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 20 [2019-05-23 11:16:46,940 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:46,940 INFO L146 ILogger]: Abstraction has 48 states and 52 transitions. [2019-05-23 11:16:46,940 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:16:46,940 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 52 transitions. [2019-05-23 11:16:46,941 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:16:46,941 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:46,942 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:46,942 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:46,942 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:46,942 INFO L146 ILogger]: Analyzing trace with hash 344230452, now seen corresponding path program 1 times [2019-05-23 11:16:46,943 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:46,943 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:46,944 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:46,944 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:46,944 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:46,956 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:47,006 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 11:16:47,006 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:47,007 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:47,008 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:47,008 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:47,009 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:47,009 INFO L146 ILogger]: Start difference. First operand 48 states and 52 transitions. Second operand 3 states. [2019-05-23 11:16:47,060 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:47,060 INFO L146 ILogger]: Finished difference Result 89 states and 97 transitions. [2019-05-23 11:16:47,062 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:47,062 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 20 [2019-05-23 11:16:47,063 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:47,064 INFO L146 ILogger]: With dead ends: 89 [2019-05-23 11:16:47,064 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:16:47,065 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 11:16:47,066 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:16:47,072 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 56. [2019-05-23 11:16:47,072 INFO L146 ILogger]: Start removeUnreachable. Operand 56 states. [2019-05-23 11:16:47,074 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2019-05-23 11:16:47,074 INFO L146 ILogger]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 20 [2019-05-23 11:16:47,074 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:47,074 INFO L146 ILogger]: Abstraction has 56 states and 62 transitions. [2019-05-23 11:16:47,075 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:47,075 INFO L146 ILogger]: Start isEmpty. Operand 56 states and 62 transitions. [2019-05-23 11:16:47,076 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:16:47,076 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:47,076 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:47,076 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:47,077 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:47,077 INFO L146 ILogger]: Analyzing trace with hash 164657660, now seen corresponding path program 1 times [2019-05-23 11:16:47,077 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:47,077 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:47,078 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:47,079 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:47,079 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:47,092 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:47,144 INFO L146 ILogger]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:47,144 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:47,145 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:47,145 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:47,146 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:47,146 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:47,146 INFO L146 ILogger]: Start difference. First operand 56 states and 62 transitions. Second operand 3 states. [2019-05-23 11:16:47,274 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:47,275 INFO L146 ILogger]: Finished difference Result 124 states and 138 transitions. [2019-05-23 11:16:47,276 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:47,276 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 24 [2019-05-23 11:16:47,276 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:47,277 INFO L146 ILogger]: With dead ends: 124 [2019-05-23 11:16:47,277 INFO L146 ILogger]: Without dead ends: 74 [2019-05-23 11:16:47,278 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 11:16:47,279 INFO L146 ILogger]: Start minimizeSevpa. Operand 74 states. [2019-05-23 11:16:47,284 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 74 to 57. [2019-05-23 11:16:47,284 INFO L146 ILogger]: Start removeUnreachable. Operand 57 states. [2019-05-23 11:16:47,286 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2019-05-23 11:16:47,286 INFO L146 ILogger]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 24 [2019-05-23 11:16:47,286 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:47,287 INFO L146 ILogger]: Abstraction has 57 states and 63 transitions. [2019-05-23 11:16:47,287 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:47,287 INFO L146 ILogger]: Start isEmpty. Operand 57 states and 63 transitions. [2019-05-23 11:16:47,288 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:16:47,288 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:47,288 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:47,289 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:47,289 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:47,289 INFO L146 ILogger]: Analyzing trace with hash 825108758, now seen corresponding path program 1 times [2019-05-23 11:16:47,289 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:47,289 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:47,290 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:47,290 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:47,291 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:47,326 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:47,502 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:47,502 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:47,503 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:16:47,521 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:47,560 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:47,562 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:16:47,569 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:47,642 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:47,673 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:47,673 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:16:47,673 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:16:47,674 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:16:47,674 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:16:47,674 INFO L146 ILogger]: Start difference. First operand 57 states and 63 transitions. Second operand 5 states. [2019-05-23 11:16:47,907 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:47,907 INFO L146 ILogger]: Finished difference Result 149 states and 166 transitions. [2019-05-23 11:16:47,908 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:16:47,908 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 31 [2019-05-23 11:16:47,908 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:47,909 INFO L146 ILogger]: With dead ends: 149 [2019-05-23 11:16:47,910 INFO L146 ILogger]: Without dead ends: 98 [2019-05-23 11:16:47,911 INFO L146 ILogger]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:16:47,911 INFO L146 ILogger]: Start minimizeSevpa. Operand 98 states. [2019-05-23 11:16:47,917 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 98 to 76. [2019-05-23 11:16:47,917 INFO L146 ILogger]: Start removeUnreachable. Operand 76 states. [2019-05-23 11:16:47,918 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2019-05-23 11:16:47,919 INFO L146 ILogger]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 31 [2019-05-23 11:16:47,919 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:47,919 INFO L146 ILogger]: Abstraction has 76 states and 83 transitions. [2019-05-23 11:16:47,919 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:16:47,919 INFO L146 ILogger]: Start isEmpty. Operand 76 states and 83 transitions. [2019-05-23 11:16:47,921 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:16:47,921 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:47,921 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:47,922 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:47,922 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:47,922 INFO L146 ILogger]: Analyzing trace with hash -239327044, now seen corresponding path program 2 times [2019-05-23 11:16:47,923 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:47,923 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:47,924 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:47,924 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:47,925 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:47,937 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:48,050 INFO L146 ILogger]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:48,051 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:48,051 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 11:16:48,069 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:48,104 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:48,104 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:48,105 INFO L146 ILogger]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:16:48,107 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:48,139 INFO L146 ILogger]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:48,168 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:48,168 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:16:48,169 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:16:48,169 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:16:48,169 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:16:48,169 INFO L146 ILogger]: Start difference. First operand 76 states and 83 transitions. Second operand 6 states. [2019-05-23 11:16:48,446 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:48,446 INFO L146 ILogger]: Finished difference Result 192 states and 212 transitions. [2019-05-23 11:16:48,447 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:16:48,447 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 38 [2019-05-23 11:16:48,447 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:48,448 INFO L146 ILogger]: With dead ends: 192 [2019-05-23 11:16:48,448 INFO L146 ILogger]: Without dead ends: 122 [2019-05-23 11:16:48,449 INFO L146 ILogger]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:16:48,450 INFO L146 ILogger]: Start minimizeSevpa. Operand 122 states. [2019-05-23 11:16:48,458 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 122 to 100. [2019-05-23 11:16:48,458 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:16:48,460 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2019-05-23 11:16:48,460 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 38 [2019-05-23 11:16:48,460 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:48,460 INFO L146 ILogger]: Abstraction has 100 states and 109 transitions. [2019-05-23 11:16:48,461 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:16:48,461 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 109 transitions. [2019-05-23 11:16:48,463 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 46 [2019-05-23 11:16:48,463 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:48,463 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:48,464 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:48,464 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:48,464 INFO L146 ILogger]: Analyzing trace with hash -1874566570, now seen corresponding path program 3 times [2019-05-23 11:16:48,464 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:48,464 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:48,465 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:48,465 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:48,466 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:48,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:48,576 INFO L146 ILogger]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:48,576 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:48,577 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 11:16:48,595 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:48,642 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:16:48,642 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:48,643 INFO L146 ILogger]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:16:48,646 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:48,674 INFO L146 ILogger]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:48,696 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:48,696 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:16:48,698 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:16:48,698 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:16:48,698 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:16:48,699 INFO L146 ILogger]: Start difference. First operand 100 states and 109 transitions. Second operand 7 states. [2019-05-23 11:16:48,978 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:48,978 INFO L146 ILogger]: Finished difference Result 240 states and 264 transitions. [2019-05-23 11:16:48,978 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:16:48,979 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 45 [2019-05-23 11:16:48,979 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:48,980 INFO L146 ILogger]: With dead ends: 240 [2019-05-23 11:16:48,980 INFO L146 ILogger]: Without dead ends: 146 [2019-05-23 11:16:48,981 INFO L146 ILogger]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:16:48,982 INFO L146 ILogger]: Start minimizeSevpa. Operand 146 states. [2019-05-23 11:16:48,991 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 146 to 124. [2019-05-23 11:16:48,991 INFO L146 ILogger]: Start removeUnreachable. Operand 124 states. [2019-05-23 11:16:48,993 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2019-05-23 11:16:48,995 INFO L146 ILogger]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 45 [2019-05-23 11:16:48,995 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:48,995 INFO L146 ILogger]: Abstraction has 124 states and 135 transitions. [2019-05-23 11:16:48,995 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:16:48,996 INFO L146 ILogger]: Start isEmpty. Operand 124 states and 135 transitions. [2019-05-23 11:16:49,000 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 53 [2019-05-23 11:16:49,001 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:49,001 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:49,001 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:49,002 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:49,002 INFO L146 ILogger]: Analyzing trace with hash -1456535684, now seen corresponding path program 4 times [2019-05-23 11:16:49,002 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:49,002 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:49,003 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:49,003 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:49,003 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:49,017 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:49,239 INFO L146 ILogger]: Checked inductivity of 47 backedges. 1 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:49,239 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:49,239 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 11:16:49,248 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:49,278 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:49,278 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:49,279 INFO L146 ILogger]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:16:49,282 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:49,658 INFO L146 ILogger]: treesize reduction 9, result has 10.0 percent of original size [2019-05-23 11:16:49,659 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2019-05-23 11:16:49,660 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:49,663 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:49,663 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:49,664 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2019-05-23 11:16:49,845 INFO L146 ILogger]: Checked inductivity of 47 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:16:49,869 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:49,869 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13] total 17 [2019-05-23 11:16:49,870 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:16:49,870 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:16:49,870 INFO L146 ILogger]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:16:49,871 INFO L146 ILogger]: Start difference. First operand 124 states and 135 transitions. Second operand 17 states. [2019-05-23 11:16:50,146 WARN L146 ILogger]: Spent 157.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2019-05-23 11:16:51,591 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:51,591 INFO L146 ILogger]: Finished difference Result 398 states and 432 transitions. [2019-05-23 11:16:51,591 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:16:51,591 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 52 [2019-05-23 11:16:51,592 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:51,594 INFO L146 ILogger]: With dead ends: 398 [2019-05-23 11:16:51,594 INFO L146 ILogger]: Without dead ends: 280 [2019-05-23 11:16:51,595 INFO L146 ILogger]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=247, Invalid=1235, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:16:51,596 INFO L146 ILogger]: Start minimizeSevpa. Operand 280 states. [2019-05-23 11:16:51,605 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 280 to 157. [2019-05-23 11:16:51,605 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:16:51,606 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 170 transitions. [2019-05-23 11:16:51,606 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 170 transitions. Word has length 52 [2019-05-23 11:16:51,606 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:51,607 INFO L146 ILogger]: Abstraction has 157 states and 170 transitions. [2019-05-23 11:16:51,607 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:16:51,607 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 170 transitions. [2019-05-23 11:16:51,609 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 72 [2019-05-23 11:16:51,609 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:51,609 INFO L146 ILogger]: trace histogram [5, 5, 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, 1, 1, 1] [2019-05-23 11:16:51,610 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:51,610 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:51,610 INFO L146 ILogger]: Analyzing trace with hash -996189410, now seen corresponding path program 1 times [2019-05-23 11:16:51,610 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:51,610 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:51,611 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,611 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:51,612 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,628 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:51,725 INFO L146 ILogger]: Checked inductivity of 83 backedges. 1 proven. 75 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:51,725 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:51,725 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 11:16:51,746 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:51,777 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:51,777 INFO L146 ILogger]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:16:51,782 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:51,809 INFO L146 ILogger]: Checked inductivity of 83 backedges. 1 proven. 75 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:51,828 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:51,828 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:16:51,828 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:16:51,829 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:16:51,829 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:51,830 INFO L146 ILogger]: Start difference. First operand 157 states and 170 transitions. Second operand 9 states. [2019-05-23 11:16:51,950 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:51,951 INFO L146 ILogger]: Finished difference Result 354 states and 386 transitions. [2019-05-23 11:16:51,951 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:16:51,952 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 71 [2019-05-23 11:16:51,952 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:51,953 INFO L146 ILogger]: With dead ends: 354 [2019-05-23 11:16:51,953 INFO L146 ILogger]: Without dead ends: 203 [2019-05-23 11:16:51,954 INFO L146 ILogger]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:51,954 INFO L146 ILogger]: Start minimizeSevpa. Operand 203 states. [2019-05-23 11:16:51,961 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 203 to 181. [2019-05-23 11:16:51,961 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:16:51,962 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 196 transitions. [2019-05-23 11:16:51,963 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 196 transitions. Word has length 71 [2019-05-23 11:16:51,963 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:51,963 INFO L146 ILogger]: Abstraction has 181 states and 196 transitions. [2019-05-23 11:16:51,963 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:16:51,963 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 196 transitions. [2019-05-23 11:16:51,965 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:16:51,965 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:51,966 INFO L146 ILogger]: trace histogram [6, 6, 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, 1, 1, 1] [2019-05-23 11:16:51,966 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:51,966 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:51,966 INFO L146 ILogger]: Analyzing trace with hash -287425340, now seen corresponding path program 2 times [2019-05-23 11:16:51,966 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:51,967 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:51,967 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,968 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:51,968 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,984 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,104 INFO L146 ILogger]: Checked inductivity of 119 backedges. 1 proven. 111 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:52,105 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:52,105 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 11:16:52,122 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:52,172 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:52,172 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,173 INFO L146 ILogger]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:16:52,176 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:52,294 INFO L146 ILogger]: Checked inductivity of 119 backedges. 1 proven. 111 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:52,323 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:52,324 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:16:52,324 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:16:52,324 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:16:52,325 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:16:52,325 INFO L146 ILogger]: Start difference. First operand 181 states and 196 transitions. Second operand 10 states. [2019-05-23 11:16:52,515 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:52,516 INFO L146 ILogger]: Finished difference Result 402 states and 438 transitions. [2019-05-23 11:16:52,517 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:16:52,517 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 78 [2019-05-23 11:16:52,518 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:52,519 INFO L146 ILogger]: With dead ends: 402 [2019-05-23 11:16:52,519 INFO L146 ILogger]: Without dead ends: 227 [2019-05-23 11:16:52,520 INFO L146 ILogger]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:16:52,520 INFO L146 ILogger]: Start minimizeSevpa. Operand 227 states. [2019-05-23 11:16:52,527 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 227 to 205. [2019-05-23 11:16:52,527 INFO L146 ILogger]: Start removeUnreachable. Operand 205 states. [2019-05-23 11:16:52,528 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 205 states to 205 states and 222 transitions. [2019-05-23 11:16:52,528 INFO L146 ILogger]: Start accepts. Automaton has 205 states and 222 transitions. Word has length 78 [2019-05-23 11:16:52,528 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:52,528 INFO L146 ILogger]: Abstraction has 205 states and 222 transitions. [2019-05-23 11:16:52,529 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:16:52,529 INFO L146 ILogger]: Start isEmpty. Operand 205 states and 222 transitions. [2019-05-23 11:16:52,530 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:16:52,530 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,530 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:52,531 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,531 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,531 INFO L146 ILogger]: Analyzing trace with hash -1487711138, now seen corresponding path program 3 times [2019-05-23 11:16:52,531 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,531 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,532 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,532 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:52,533 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,548 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,757 INFO L146 ILogger]: Checked inductivity of 162 backedges. 1 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:52,758 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:52,758 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 11:16:52,767 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:52,826 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-05-23 11:16:52,826 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,827 INFO L146 ILogger]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:16:52,829 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:52,866 INFO L146 ILogger]: Checked inductivity of 162 backedges. 1 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:52,885 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:52,886 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:16:52,886 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:16:52,886 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:16:52,887 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:16:52,887 INFO L146 ILogger]: Start difference. First operand 205 states and 222 transitions. Second operand 11 states. [2019-05-23 11:16:53,144 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,146 INFO L146 ILogger]: Finished difference Result 450 states and 490 transitions. [2019-05-23 11:16:53,146 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:16:53,146 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 85 [2019-05-23 11:16:53,147 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,148 INFO L146 ILogger]: With dead ends: 450 [2019-05-23 11:16:53,148 INFO L146 ILogger]: Without dead ends: 251 [2019-05-23 11:16:53,149 INFO L146 ILogger]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:16:53,149 INFO L146 ILogger]: Start minimizeSevpa. Operand 251 states. [2019-05-23 11:16:53,155 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 251 to 229. [2019-05-23 11:16:53,155 INFO L146 ILogger]: Start removeUnreachable. Operand 229 states. [2019-05-23 11:16:53,156 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 229 states to 229 states and 248 transitions. [2019-05-23 11:16:53,156 INFO L146 ILogger]: Start accepts. Automaton has 229 states and 248 transitions. Word has length 85 [2019-05-23 11:16:53,156 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,156 INFO L146 ILogger]: Abstraction has 229 states and 248 transitions. [2019-05-23 11:16:53,157 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:16:53,157 INFO L146 ILogger]: Start isEmpty. Operand 229 states and 248 transitions. [2019-05-23 11:16:53,158 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 93 [2019-05-23 11:16:53,158 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,158 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:53,159 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,159 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,159 INFO L146 ILogger]: Analyzing trace with hash 700144516, now seen corresponding path program 4 times [2019-05-23 11:16:53,159 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,159 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,160 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,161 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:53,161 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,176 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,316 INFO L146 ILogger]: Checked inductivity of 212 backedges. 1 proven. 204 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:16:53,317 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:53,317 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 11:16:53,329 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:53,349 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:53,349 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,351 INFO L146 ILogger]: Trace formula consists of 125 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:16:53,355 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:53,976 INFO L146 ILogger]: treesize reduction 32, result has 3.0 percent of original size [2019-05-23 11:16:53,977 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 13 [2019-05-23 11:16:53,977 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:53,980 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:53,980 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:53,980 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:3 [2019-05-23 11:16:54,061 INFO L146 ILogger]: Checked inductivity of 212 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2019-05-23 11:16:54,080 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:54,080 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19] total 27 [2019-05-23 11:16:54,081 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:16:54,081 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:16:54,082 INFO L146 ILogger]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:16:54,082 INFO L146 ILogger]: Start difference. First operand 229 states and 248 transitions. Second operand 27 states. [2019-05-23 11:16:56,995 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:56,995 INFO L146 ILogger]: Finished difference Result 665 states and 716 transitions. [2019-05-23 11:16:56,996 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:16:56,996 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 92 [2019-05-23 11:16:56,996 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:56,998 INFO L146 ILogger]: With dead ends: 665 [2019-05-23 11:16:56,998 INFO L146 ILogger]: Without dead ends: 442 [2019-05-23 11:16:57,000 INFO L146 ILogger]: 0 DeclaredPredicates, 138 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=581, Invalid=3325, Unknown=0, NotChecked=0, Total=3906 [2019-05-23 11:16:57,001 INFO L146 ILogger]: Start minimizeSevpa. Operand 442 states. [2019-05-23 11:16:57,007 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 442 to 265. [2019-05-23 11:16:57,008 INFO L146 ILogger]: Start removeUnreachable. Operand 265 states. [2019-05-23 11:16:57,009 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 265 states to 265 states and 286 transitions. [2019-05-23 11:16:57,009 INFO L146 ILogger]: Start accepts. Automaton has 265 states and 286 transitions. Word has length 92 [2019-05-23 11:16:57,009 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:57,009 INFO L146 ILogger]: Abstraction has 265 states and 286 transitions. [2019-05-23 11:16:57,009 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:16:57,009 INFO L146 ILogger]: Start isEmpty. Operand 265 states and 286 transitions. [2019-05-23 11:16:57,011 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 112 [2019-05-23 11:16:57,011 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:57,011 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:57,011 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:57,012 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:57,012 INFO L146 ILogger]: Analyzing trace with hash -589741786, now seen corresponding path program 5 times [2019-05-23 11:16:57,012 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:57,012 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:57,013 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,013 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:57,013 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,031 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,174 INFO L146 ILogger]: Checked inductivity of 288 backedges. 1 proven. 261 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:16:57,175 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:57,175 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 11:16:57,183 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:57,221 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:16:57,222 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,222 INFO L146 ILogger]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:16:57,224 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:57,250 INFO L146 ILogger]: Checked inductivity of 288 backedges. 1 proven. 261 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:16:57,268 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:57,268 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:16:57,270 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:16:57,270 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:16:57,270 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:57,270 INFO L146 ILogger]: Start difference. First operand 265 states and 286 transitions. Second operand 13 states. [2019-05-23 11:16:57,941 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:57,941 INFO L146 ILogger]: Finished difference Result 570 states and 618 transitions. [2019-05-23 11:16:57,942 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:16:57,942 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 111 [2019-05-23 11:16:57,942 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:57,944 INFO L146 ILogger]: With dead ends: 570 [2019-05-23 11:16:57,945 INFO L146 ILogger]: Without dead ends: 311 [2019-05-23 11:16:57,945 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:57,946 INFO L146 ILogger]: Start minimizeSevpa. Operand 311 states. [2019-05-23 11:16:57,955 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 311 to 289. [2019-05-23 11:16:57,955 INFO L146 ILogger]: Start removeUnreachable. Operand 289 states. [2019-05-23 11:16:57,957 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 289 states to 289 states and 312 transitions. [2019-05-23 11:16:57,957 INFO L146 ILogger]: Start accepts. Automaton has 289 states and 312 transitions. Word has length 111 [2019-05-23 11:16:57,957 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:57,957 INFO L146 ILogger]: Abstraction has 289 states and 312 transitions. [2019-05-23 11:16:57,958 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:16:57,958 INFO L146 ILogger]: Start isEmpty. Operand 289 states and 312 transitions. [2019-05-23 11:16:57,960 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 119 [2019-05-23 11:16:57,960 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:57,960 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:57,961 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:57,961 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:57,961 INFO L146 ILogger]: Analyzing trace with hash 1723794636, now seen corresponding path program 6 times [2019-05-23 11:16:57,961 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:57,962 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:57,962 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,963 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:57,963 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,980 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,362 INFO L146 ILogger]: Checked inductivity of 352 backedges. 1 proven. 325 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:16:58,363 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:58,363 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 11:16:58,374 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:58,433 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-05-23 11:16:58,433 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,434 INFO L146 ILogger]: Trace formula consists of 143 conjuncts, 41 conjunts are in the unsatisfiable core [2019-05-23 11:16:58,437 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:59,134 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:59,135 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2019-05-23 11:16:59,135 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:59,141 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:59,141 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:59,142 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:3 [2019-05-23 11:16:59,263 INFO L146 ILogger]: Checked inductivity of 352 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2019-05-23 11:16:59,282 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:59,282 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 25] total 36 [2019-05-23 11:16:59,283 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:16:59,283 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:16:59,284 INFO L146 ILogger]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:16:59,284 INFO L146 ILogger]: Start difference. First operand 289 states and 312 transitions. Second operand 36 states. [2019-05-23 11:17:03,526 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:03,526 INFO L146 ILogger]: Finished difference Result 977 states and 1050 transitions. [2019-05-23 11:17:03,527 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2019-05-23 11:17:03,527 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 118 [2019-05-23 11:17:03,527 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:03,530 INFO L146 ILogger]: With dead ends: 977 [2019-05-23 11:17:03,531 INFO L146 ILogger]: Without dead ends: 694 [2019-05-23 11:17:03,535 INFO L146 ILogger]: 0 DeclaredPredicates, 198 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3634 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1620, Invalid=8886, Unknown=0, NotChecked=0, Total=10506 [2019-05-23 11:17:03,536 INFO L146 ILogger]: Start minimizeSevpa. Operand 694 states. [2019-05-23 11:17:03,544 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 694 to 325. [2019-05-23 11:17:03,544 INFO L146 ILogger]: Start removeUnreachable. Operand 325 states. [2019-05-23 11:17:03,545 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 325 states to 325 states and 350 transitions. [2019-05-23 11:17:03,545 INFO L146 ILogger]: Start accepts. Automaton has 325 states and 350 transitions. Word has length 118 [2019-05-23 11:17:03,545 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:03,545 INFO L146 ILogger]: Abstraction has 325 states and 350 transitions. [2019-05-23 11:17:03,546 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:17:03,546 INFO L146 ILogger]: Start isEmpty. Operand 325 states and 350 transitions. [2019-05-23 11:17:03,547 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:17:03,547 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:03,547 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:03,548 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:03,548 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:03,548 INFO L146 ILogger]: Analyzing trace with hash 826094062, now seen corresponding path program 7 times [2019-05-23 11:17:03,548 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:03,548 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:03,549 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,549 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:03,549 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,565 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,048 INFO L146 ILogger]: Checked inductivity of 454 backedges. 1 proven. 396 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:04,048 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:04,048 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 11:17:04,058 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:04,089 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,090 INFO L146 ILogger]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:17:04,092 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:04,113 INFO L146 ILogger]: Checked inductivity of 454 backedges. 1 proven. 396 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:04,132 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:04,132 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:17:04,132 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:17:04,133 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:17:04,133 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:17:04,133 INFO L146 ILogger]: Start difference. First operand 325 states and 350 transitions. Second operand 15 states. [2019-05-23 11:17:04,293 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:04,294 INFO L146 ILogger]: Finished difference Result 690 states and 746 transitions. [2019-05-23 11:17:04,300 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:17:04,300 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 137 [2019-05-23 11:17:04,300 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:04,302 INFO L146 ILogger]: With dead ends: 690 [2019-05-23 11:17:04,302 INFO L146 ILogger]: Without dead ends: 371 [2019-05-23 11:17:04,303 INFO L146 ILogger]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:17:04,303 INFO L146 ILogger]: Start minimizeSevpa. Operand 371 states. [2019-05-23 11:17:04,310 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 371 to 349. [2019-05-23 11:17:04,310 INFO L146 ILogger]: Start removeUnreachable. Operand 349 states. [2019-05-23 11:17:04,312 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 349 states to 349 states and 376 transitions. [2019-05-23 11:17:04,313 INFO L146 ILogger]: Start accepts. Automaton has 349 states and 376 transitions. Word has length 137 [2019-05-23 11:17:04,313 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:04,313 INFO L146 ILogger]: Abstraction has 349 states and 376 transitions. [2019-05-23 11:17:04,313 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:17:04,313 INFO L146 ILogger]: Start isEmpty. Operand 349 states and 376 transitions. [2019-05-23 11:17:04,315 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:17:04,315 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:04,315 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:04,316 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:04,316 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:04,316 INFO L146 ILogger]: Analyzing trace with hash 1630933524, now seen corresponding path program 8 times [2019-05-23 11:17:04,316 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:04,316 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:04,317 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,317 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:04,317 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,337 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:05,331 INFO L146 ILogger]: Checked inductivity of 532 backedges. 1 proven. 474 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:05,331 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:05,331 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 11:17:05,340 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:05,375 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:05,375 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:05,376 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:17:05,377 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:05,401 INFO L146 ILogger]: Checked inductivity of 532 backedges. 1 proven. 474 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:05,419 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:05,419 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:17:05,420 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:17:05,420 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:17:05,420 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:17:05,420 INFO L146 ILogger]: Start difference. First operand 349 states and 376 transitions. Second operand 16 states. [2019-05-23 11:17:05,590 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:05,591 INFO L146 ILogger]: Finished difference Result 738 states and 798 transitions. [2019-05-23 11:17:05,599 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:17:05,599 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 144 [2019-05-23 11:17:05,599 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:05,603 INFO L146 ILogger]: With dead ends: 738 [2019-05-23 11:17:05,603 INFO L146 ILogger]: Without dead ends: 395 [2019-05-23 11:17:05,604 INFO L146 ILogger]: 0 DeclaredPredicates, 158 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:17:05,605 INFO L146 ILogger]: Start minimizeSevpa. Operand 395 states. [2019-05-23 11:17:05,615 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 395 to 373. [2019-05-23 11:17:05,615 INFO L146 ILogger]: Start removeUnreachable. Operand 373 states. [2019-05-23 11:17:05,616 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 373 states to 373 states and 402 transitions. [2019-05-23 11:17:05,617 INFO L146 ILogger]: Start accepts. Automaton has 373 states and 402 transitions. Word has length 144 [2019-05-23 11:17:05,617 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:05,617 INFO L146 ILogger]: Abstraction has 373 states and 402 transitions. [2019-05-23 11:17:05,617 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:17:05,617 INFO L146 ILogger]: Start isEmpty. Operand 373 states and 402 transitions. [2019-05-23 11:17:05,619 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:17:05,619 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:05,620 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:05,620 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:05,620 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:05,620 INFO L146 ILogger]: Analyzing trace with hash 1022221102, now seen corresponding path program 9 times [2019-05-23 11:17:05,620 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:05,621 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:05,621 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:05,621 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:05,622 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:05,637 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:06,120 INFO L146 ILogger]: Checked inductivity of 617 backedges. 1 proven. 559 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:06,120 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:06,120 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 11:17:06,130 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:06,179 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2019-05-23 11:17:06,179 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:06,180 INFO L146 ILogger]: Trace formula consists of 231 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:17:06,181 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:06,216 INFO L146 ILogger]: Checked inductivity of 617 backedges. 1 proven. 559 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:06,236 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:06,237 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:17:06,237 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:17:06,237 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:17:06,237 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:17:06,237 INFO L146 ILogger]: Start difference. First operand 373 states and 402 transitions. Second operand 17 states. [2019-05-23 11:17:06,578 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:06,578 INFO L146 ILogger]: Finished difference Result 786 states and 850 transitions. [2019-05-23 11:17:06,581 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:17:06,581 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 151 [2019-05-23 11:17:06,581 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:06,583 INFO L146 ILogger]: With dead ends: 786 [2019-05-23 11:17:06,583 INFO L146 ILogger]: Without dead ends: 419 [2019-05-23 11:17:06,584 INFO L146 ILogger]: 0 DeclaredPredicates, 166 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:17:06,585 INFO L146 ILogger]: Start minimizeSevpa. Operand 419 states. [2019-05-23 11:17:06,592 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 419 to 397. [2019-05-23 11:17:06,593 INFO L146 ILogger]: Start removeUnreachable. Operand 397 states. [2019-05-23 11:17:06,594 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 397 states to 397 states and 428 transitions. [2019-05-23 11:17:06,594 INFO L146 ILogger]: Start accepts. Automaton has 397 states and 428 transitions. Word has length 151 [2019-05-23 11:17:06,594 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:06,594 INFO L146 ILogger]: Abstraction has 397 states and 428 transitions. [2019-05-23 11:17:06,594 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:17:06,595 INFO L146 ILogger]: Start isEmpty. Operand 397 states and 428 transitions. [2019-05-23 11:17:06,596 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 159 [2019-05-23 11:17:06,597 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:06,597 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:06,608 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:06,608 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:06,609 INFO L146 ILogger]: Analyzing trace with hash 1852866772, now seen corresponding path program 10 times [2019-05-23 11:17:06,609 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:06,609 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:06,610 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:06,610 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:06,610 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:06,634 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:06,895 INFO L146 ILogger]: Checked inductivity of 709 backedges. 1 proven. 651 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:06,896 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:06,896 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 11:17:06,904 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:06,938 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:06,938 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:06,939 INFO L146 ILogger]: Trace formula consists of 213 conjuncts, 47 conjunts are in the unsatisfiable core [2019-05-23 11:17:06,942 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:08,025 INFO L146 ILogger]: treesize reduction 112, result has 0.9 percent of original size [2019-05-23 11:17:08,025 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 19 [2019-05-23 11:17:08,026 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:08,027 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:08,027 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:08,028 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:75, output treesize:3 [2019-05-23 11:17:08,285 INFO L146 ILogger]: Checked inductivity of 709 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2019-05-23 11:17:08,303 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:08,303 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 31] total 45 [2019-05-23 11:17:08,304 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:17:08,304 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:17:08,305 INFO L146 ILogger]: CoverageRelationStatistics Valid=395, Invalid=1585, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:17:08,305 INFO L146 ILogger]: Start difference. First operand 397 states and 428 transitions. Second operand 45 states. [2019-05-23 11:17:13,000 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:13,001 INFO L146 ILogger]: Finished difference Result 1089 states and 1166 transitions. [2019-05-23 11:17:13,001 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2019-05-23 11:17:13,001 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 158 [2019-05-23 11:17:13,002 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:13,004 INFO L146 ILogger]: With dead ends: 1089 [2019-05-23 11:17:13,004 INFO L146 ILogger]: Without dead ends: 698 [2019-05-23 11:17:13,008 INFO L146 ILogger]: 0 DeclaredPredicates, 234 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1449, Invalid=9471, Unknown=0, NotChecked=0, Total=10920 [2019-05-23 11:17:13,009 INFO L146 ILogger]: Start minimizeSevpa. Operand 698 states. [2019-05-23 11:17:13,018 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 698 to 433. [2019-05-23 11:17:13,018 INFO L146 ILogger]: Start removeUnreachable. Operand 433 states. [2019-05-23 11:17:13,019 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 433 states to 433 states and 466 transitions. [2019-05-23 11:17:13,019 INFO L146 ILogger]: Start accepts. Automaton has 433 states and 466 transitions. Word has length 158 [2019-05-23 11:17:13,019 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:13,020 INFO L146 ILogger]: Abstraction has 433 states and 466 transitions. [2019-05-23 11:17:13,020 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:17:13,020 INFO L146 ILogger]: Start isEmpty. Operand 433 states and 466 transitions. [2019-05-23 11:17:13,022 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 178 [2019-05-23 11:17:13,022 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:13,022 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:13,023 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:13,023 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:13,023 INFO L146 ILogger]: Analyzing trace with hash -1664040970, now seen corresponding path program 11 times [2019-05-23 11:17:13,023 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:13,023 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:13,024 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:13,024 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:13,024 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:13,038 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:13,276 INFO L146 ILogger]: Checked inductivity of 851 backedges. 1 proven. 750 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:17:13,277 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:13,277 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 11:17:13,285 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:13,332 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2019-05-23 11:17:13,332 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:13,333 INFO L146 ILogger]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:17:13,336 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:13,396 INFO L146 ILogger]: Checked inductivity of 851 backedges. 1 proven. 750 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:17:13,415 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:13,415 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:17:13,415 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:17:13,415 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:17:13,416 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:17:13,416 INFO L146 ILogger]: Start difference. First operand 433 states and 466 transitions. Second operand 19 states. [2019-05-23 11:17:13,646 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:13,647 INFO L146 ILogger]: Finished difference Result 906 states and 978 transitions. [2019-05-23 11:17:13,647 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:17:13,647 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 177 [2019-05-23 11:17:13,647 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:13,649 INFO L146 ILogger]: With dead ends: 906 [2019-05-23 11:17:13,649 INFO L146 ILogger]: Without dead ends: 479 [2019-05-23 11:17:13,651 INFO L146 ILogger]: 0 DeclaredPredicates, 194 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:17:13,651 INFO L146 ILogger]: Start minimizeSevpa. Operand 479 states. [2019-05-23 11:17:13,659 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 479 to 457. [2019-05-23 11:17:13,659 INFO L146 ILogger]: Start removeUnreachable. Operand 457 states. [2019-05-23 11:17:13,660 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 457 states to 457 states and 492 transitions. [2019-05-23 11:17:13,661 INFO L146 ILogger]: Start accepts. Automaton has 457 states and 492 transitions. Word has length 177 [2019-05-23 11:17:13,661 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:13,661 INFO L146 ILogger]: Abstraction has 457 states and 492 transitions. [2019-05-23 11:17:13,661 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:17:13,661 INFO L146 ILogger]: Start isEmpty. Operand 457 states and 492 transitions. [2019-05-23 11:17:13,663 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:17:13,663 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:13,664 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:13,664 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:13,664 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:13,664 INFO L146 ILogger]: Analyzing trace with hash 2049966620, now seen corresponding path program 12 times [2019-05-23 11:17:13,664 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:13,664 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:13,665 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:13,665 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:13,665 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:13,679 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,249 INFO L146 ILogger]: Checked inductivity of 957 backedges. 1 proven. 856 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:17:14,249 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:14,250 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:17:14,261 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:14,346 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2019-05-23 11:17:14,347 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,348 INFO L146 ILogger]: Trace formula consists of 269 conjuncts, 55 conjunts are in the unsatisfiable core [2019-05-23 11:17:14,352 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:15,497 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:15,498 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2019-05-23 11:17:15,498 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:15,499 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:15,499 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:15,500 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:3 [2019-05-23 11:17:15,690 INFO L146 ILogger]: Checked inductivity of 957 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2019-05-23 11:17:15,709 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:15,709 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 32] total 49 [2019-05-23 11:17:15,710 INFO L146 ILogger]: Interpolant automaton has 49 states [2019-05-23 11:17:15,710 INFO L146 ILogger]: Constructing interpolant automaton starting with 49 interpolants. [2019-05-23 11:17:15,711 INFO L146 ILogger]: CoverageRelationStatistics Valid=412, Invalid=1940, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:17:15,711 INFO L146 ILogger]: Start difference. First operand 457 states and 492 transitions. Second operand 49 states. [2019-05-23 11:17:23,069 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:23,069 INFO L146 ILogger]: Finished difference Result 1497 states and 1602 transitions. [2019-05-23 11:17:23,069 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2019-05-23 11:17:23,069 INFO L146 ILogger]: Start accepts. Automaton has 49 states. Word has length 184 [2019-05-23 11:17:23,070 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:23,073 INFO L146 ILogger]: With dead ends: 1497 [2019-05-23 11:17:23,073 INFO L146 ILogger]: Without dead ends: 1046 [2019-05-23 11:17:23,079 INFO L146 ILogger]: 0 DeclaredPredicates, 294 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7114 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3004, Invalid=16456, Unknown=0, NotChecked=0, Total=19460 [2019-05-23 11:17:23,080 INFO L146 ILogger]: Start minimizeSevpa. Operand 1046 states. [2019-05-23 11:17:23,090 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1046 to 493. [2019-05-23 11:17:23,091 INFO L146 ILogger]: Start removeUnreachable. Operand 493 states. [2019-05-23 11:17:23,092 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 493 states to 493 states and 530 transitions. [2019-05-23 11:17:23,092 INFO L146 ILogger]: Start accepts. Automaton has 493 states and 530 transitions. Word has length 184 [2019-05-23 11:17:23,092 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:23,092 INFO L146 ILogger]: Abstraction has 493 states and 530 transitions. [2019-05-23 11:17:23,092 INFO L146 ILogger]: Interpolant automaton has 49 states. [2019-05-23 11:17:23,092 INFO L146 ILogger]: Start isEmpty. Operand 493 states and 530 transitions. [2019-05-23 11:17:23,094 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 204 [2019-05-23 11:17:23,094 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:23,094 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:23,094 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:23,095 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:23,095 INFO L146 ILogger]: Analyzing trace with hash 996255934, now seen corresponding path program 13 times [2019-05-23 11:17:23,095 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:23,095 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:23,096 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:23,096 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:23,096 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:23,112 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:23,426 INFO L146 ILogger]: Checked inductivity of 1125 backedges. 1 proven. 969 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:23,426 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:23,426 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 11:17:23,435 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:23,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:23,480 INFO L146 ILogger]: Trace formula consists of 307 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:17:23,482 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:23,532 INFO L146 ILogger]: Checked inductivity of 1125 backedges. 1 proven. 969 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:23,551 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:23,551 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:17:23,551 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:17:23,552 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:17:23,552 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:17:23,552 INFO L146 ILogger]: Start difference. First operand 493 states and 530 transitions. Second operand 21 states. [2019-05-23 11:17:23,780 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:23,781 INFO L146 ILogger]: Finished difference Result 1026 states and 1106 transitions. [2019-05-23 11:17:23,784 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:17:23,784 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 203 [2019-05-23 11:17:23,785 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:23,786 INFO L146 ILogger]: With dead ends: 1026 [2019-05-23 11:17:23,786 INFO L146 ILogger]: Without dead ends: 539 [2019-05-23 11:17:23,787 INFO L146 ILogger]: 0 DeclaredPredicates, 222 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:17:23,788 INFO L146 ILogger]: Start minimizeSevpa. Operand 539 states. [2019-05-23 11:17:23,797 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 539 to 517. [2019-05-23 11:17:23,797 INFO L146 ILogger]: Start removeUnreachable. Operand 517 states. [2019-05-23 11:17:23,798 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 517 states to 517 states and 556 transitions. [2019-05-23 11:17:23,798 INFO L146 ILogger]: Start accepts. Automaton has 517 states and 556 transitions. Word has length 203 [2019-05-23 11:17:23,798 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:23,798 INFO L146 ILogger]: Abstraction has 517 states and 556 transitions. [2019-05-23 11:17:23,798 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:17:23,799 INFO L146 ILogger]: Start isEmpty. Operand 517 states and 556 transitions. [2019-05-23 11:17:23,800 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 211 [2019-05-23 11:17:23,800 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:23,800 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:23,801 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:23,801 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:23,801 INFO L146 ILogger]: Analyzing trace with hash 2019223396, now seen corresponding path program 14 times [2019-05-23 11:17:23,801 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:23,801 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:23,802 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:23,802 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:23,802 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:23,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:24,781 INFO L146 ILogger]: Checked inductivity of 1245 backedges. 1 proven. 1089 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:24,781 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:24,781 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:24,790 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:24,838 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:24,838 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:24,839 INFO L146 ILogger]: Trace formula consists of 317 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:17:24,841 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:24,898 INFO L146 ILogger]: Checked inductivity of 1245 backedges. 1 proven. 1089 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:24,917 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:24,917 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:17:24,917 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:17:24,918 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:17:24,918 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:17:24,918 INFO L146 ILogger]: Start difference. First operand 517 states and 556 transitions. Second operand 22 states. [2019-05-23 11:17:25,461 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:25,461 INFO L146 ILogger]: Finished difference Result 1074 states and 1158 transitions. [2019-05-23 11:17:25,461 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:17:25,461 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 210 [2019-05-23 11:17:25,462 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:25,464 INFO L146 ILogger]: With dead ends: 1074 [2019-05-23 11:17:25,464 INFO L146 ILogger]: Without dead ends: 563 [2019-05-23 11:17:25,465 INFO L146 ILogger]: 0 DeclaredPredicates, 230 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:17:25,465 INFO L146 ILogger]: Start minimizeSevpa. Operand 563 states. [2019-05-23 11:17:25,474 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 563 to 541. [2019-05-23 11:17:25,474 INFO L146 ILogger]: Start removeUnreachable. Operand 541 states. [2019-05-23 11:17:25,475 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 541 states to 541 states and 582 transitions. [2019-05-23 11:17:25,475 INFO L146 ILogger]: Start accepts. Automaton has 541 states and 582 transitions. Word has length 210 [2019-05-23 11:17:25,476 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:25,476 INFO L146 ILogger]: Abstraction has 541 states and 582 transitions. [2019-05-23 11:17:25,476 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:17:25,476 INFO L146 ILogger]: Start isEmpty. Operand 541 states and 582 transitions. [2019-05-23 11:17:25,478 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 218 [2019-05-23 11:17:25,478 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:25,478 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:25,478 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:25,478 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:25,479 INFO L146 ILogger]: Analyzing trace with hash 1176699390, now seen corresponding path program 15 times [2019-05-23 11:17:25,479 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:25,479 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:25,479 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:25,480 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:25,480 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:25,495 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:25,758 INFO L146 ILogger]: Checked inductivity of 1372 backedges. 1 proven. 1216 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:25,759 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:25,759 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:25,776 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:25,864 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2019-05-23 11:17:25,864 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:25,865 INFO L146 ILogger]: Trace formula consists of 327 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:17:25,868 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:25,916 INFO L146 ILogger]: Checked inductivity of 1372 backedges. 1 proven. 1216 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:25,935 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:25,935 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:17:25,935 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:17:25,936 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:17:25,936 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:17:25,936 INFO L146 ILogger]: Start difference. First operand 541 states and 582 transitions. Second operand 23 states. [2019-05-23 11:17:26,217 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:26,218 INFO L146 ILogger]: Finished difference Result 1122 states and 1210 transitions. [2019-05-23 11:17:26,220 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:17:26,220 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 217 [2019-05-23 11:17:26,221 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:26,223 INFO L146 ILogger]: With dead ends: 1122 [2019-05-23 11:17:26,223 INFO L146 ILogger]: Without dead ends: 587 [2019-05-23 11:17:26,224 INFO L146 ILogger]: 0 DeclaredPredicates, 238 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:17:26,224 INFO L146 ILogger]: Start minimizeSevpa. Operand 587 states. [2019-05-23 11:17:26,234 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 587 to 565. [2019-05-23 11:17:26,234 INFO L146 ILogger]: Start removeUnreachable. Operand 565 states. [2019-05-23 11:17:26,235 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 565 states to 565 states and 608 transitions. [2019-05-23 11:17:26,235 INFO L146 ILogger]: Start accepts. Automaton has 565 states and 608 transitions. Word has length 217 [2019-05-23 11:17:26,235 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:26,235 INFO L146 ILogger]: Abstraction has 565 states and 608 transitions. [2019-05-23 11:17:26,236 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:17:26,236 INFO L146 ILogger]: Start isEmpty. Operand 565 states and 608 transitions. [2019-05-23 11:17:26,237 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 225 [2019-05-23 11:17:26,237 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:26,238 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:26,238 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:26,238 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:26,238 INFO L146 ILogger]: Analyzing trace with hash 1130276388, now seen corresponding path program 16 times [2019-05-23 11:17:26,238 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:26,238 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:26,239 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:26,239 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:26,239 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:26,256 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:26,672 INFO L146 ILogger]: Checked inductivity of 1506 backedges. 1 proven. 1350 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:17:26,673 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:26,673 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:26,682 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:26,723 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:26,723 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:26,725 INFO L146 ILogger]: Trace formula consists of 301 conjuncts, 65 conjunts are in the unsatisfiable core [2019-05-23 11:17:26,730 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:29,586 INFO L146 ILogger]: treesize reduction 240, result has 0.4 percent of original size [2019-05-23 11:17:29,586 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 25 [2019-05-23 11:17:29,587 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:29,594 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:29,595 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:29,595 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:105, output treesize:3 [2019-05-23 11:17:30,095 INFO L146 ILogger]: Checked inductivity of 1506 backedges. 0 proven. 813 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2019-05-23 11:17:30,114 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:30,114 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 43] total 63 [2019-05-23 11:17:30,114 INFO L146 ILogger]: Interpolant automaton has 63 states [2019-05-23 11:17:30,115 INFO L146 ILogger]: Constructing interpolant automaton starting with 63 interpolants. [2019-05-23 11:17:30,116 INFO L146 ILogger]: CoverageRelationStatistics Valid=766, Invalid=3140, Unknown=0, NotChecked=0, Total=3906 [2019-05-23 11:17:30,116 INFO L146 ILogger]: Start difference. First operand 565 states and 608 transitions. Second operand 63 states. [2019-05-23 11:17:36,382 WARN L146 ILogger]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2019-05-23 11:17:38,948 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:38,948 INFO L146 ILogger]: Finished difference Result 1513 states and 1616 transitions. [2019-05-23 11:17:38,949 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2019-05-23 11:17:38,949 INFO L146 ILogger]: Start accepts. Automaton has 63 states. Word has length 224 [2019-05-23 11:17:38,949 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:38,955 INFO L146 ILogger]: With dead ends: 1513 [2019-05-23 11:17:38,955 INFO L146 ILogger]: Without dead ends: 954 [2019-05-23 11:17:38,959 INFO L146 ILogger]: 0 DeclaredPredicates, 330 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7774 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2685, Invalid=18777, Unknown=0, NotChecked=0, Total=21462 [2019-05-23 11:17:38,960 INFO L146 ILogger]: Start minimizeSevpa. Operand 954 states. [2019-05-23 11:17:38,970 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 954 to 601. [2019-05-23 11:17:38,970 INFO L146 ILogger]: Start removeUnreachable. Operand 601 states. [2019-05-23 11:17:38,972 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 601 states to 601 states and 646 transitions. [2019-05-23 11:17:38,972 INFO L146 ILogger]: Start accepts. Automaton has 601 states and 646 transitions. Word has length 224 [2019-05-23 11:17:38,972 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:38,972 INFO L146 ILogger]: Abstraction has 601 states and 646 transitions. [2019-05-23 11:17:38,972 INFO L146 ILogger]: Interpolant automaton has 63 states. [2019-05-23 11:17:38,972 INFO L146 ILogger]: Start isEmpty. Operand 601 states and 646 transitions. [2019-05-23 11:17:38,974 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 244 [2019-05-23 11:17:38,974 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:38,975 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:38,976 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:38,976 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:38,976 INFO L146 ILogger]: Analyzing trace with hash -1031348538, now seen corresponding path program 17 times [2019-05-23 11:17:38,976 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:38,976 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:38,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:38,977 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:38,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:39,000 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:39,299 INFO L146 ILogger]: Checked inductivity of 1714 backedges. 1 proven. 1491 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:17:39,299 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:39,299 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:39,315 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:39,406 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2019-05-23 11:17:39,406 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:39,407 INFO L146 ILogger]: Trace formula consists of 326 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:17:39,410 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:39,491 INFO L146 ILogger]: Checked inductivity of 1714 backedges. 1 proven. 1491 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:17:39,511 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:39,511 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-05-23 11:17:39,512 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:17:39,512 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:17:39,512 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:17:39,513 INFO L146 ILogger]: Start difference. First operand 601 states and 646 transitions. Second operand 25 states. [2019-05-23 11:17:39,859 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:39,859 INFO L146 ILogger]: Finished difference Result 1242 states and 1338 transitions. [2019-05-23 11:17:39,860 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:17:39,860 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 243 [2019-05-23 11:17:39,860 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:39,862 INFO L146 ILogger]: With dead ends: 1242 [2019-05-23 11:17:39,862 INFO L146 ILogger]: Without dead ends: 647 [2019-05-23 11:17:39,863 INFO L146 ILogger]: 0 DeclaredPredicates, 266 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:17:39,864 INFO L146 ILogger]: Start minimizeSevpa. Operand 647 states. [2019-05-23 11:17:39,874 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 647 to 625. [2019-05-23 11:17:39,874 INFO L146 ILogger]: Start removeUnreachable. Operand 625 states. [2019-05-23 11:17:39,875 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 625 states to 625 states and 672 transitions. [2019-05-23 11:17:39,876 INFO L146 ILogger]: Start accepts. Automaton has 625 states and 672 transitions. Word has length 243 [2019-05-23 11:17:39,876 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:39,876 INFO L146 ILogger]: Abstraction has 625 states and 672 transitions. [2019-05-23 11:17:39,876 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:17:39,876 INFO L146 ILogger]: Start isEmpty. Operand 625 states and 672 transitions. [2019-05-23 11:17:39,878 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 251 [2019-05-23 11:17:39,878 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:39,878 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:39,879 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:39,879 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:39,879 INFO L146 ILogger]: Analyzing trace with hash -859439252, now seen corresponding path program 18 times [2019-05-23 11:17:39,879 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:39,879 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:39,880 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:39,880 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:39,881 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:39,904 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:40,390 INFO L146 ILogger]: Checked inductivity of 1862 backedges. 1 proven. 1639 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:17:40,390 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:40,390 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:40,401 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:40,486 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2019-05-23 11:17:40,487 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:40,488 INFO L146 ILogger]: Trace formula consists of 315 conjuncts, 65 conjunts are in the unsatisfiable core [2019-05-23 11:17:40,492 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:41,775 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:41,775 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2019-05-23 11:17:41,776 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:41,777 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:41,777 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:41,777 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:3 [2019-05-23 11:17:42,196 INFO L146 ILogger]: Checked inductivity of 1862 backedges. 0 proven. 1067 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2019-05-23 11:17:42,215 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:42,215 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 37] total 60 [2019-05-23 11:17:42,216 INFO L146 ILogger]: Interpolant automaton has 60 states [2019-05-23 11:17:42,216 INFO L146 ILogger]: Constructing interpolant automaton starting with 60 interpolants. [2019-05-23 11:17:42,216 INFO L146 ILogger]: CoverageRelationStatistics Valid=603, Invalid=2937, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:17:42,217 INFO L146 ILogger]: Start difference. First operand 625 states and 672 transitions. Second operand 60 states.