java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_copy1_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:16:49,679 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:16:49,682 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:16:49,700 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:16:49,700 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:16:49,701 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:16:49,704 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:16:49,707 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:16:49,709 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:16:49,712 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:16:49,713 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:16:49,713 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:16:49,714 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:16:49,715 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:16:49,720 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:16:49,721 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:16:49,722 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:16:49,726 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:16:49,729 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:16:49,732 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:16:49,734 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:16:49,737 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:16:49,740 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:16:49,741 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:16:49,741 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:16:49,742 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:16:49,742 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:16:49,743 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:16:49,743 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:16:49,745 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:16:49,748 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:16:49,748 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:16:49,750 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:16:49,750 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:16:49,751 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:16:49,752 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:16:49,752 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:16:49,753 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:16:49,753 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:16:49,755 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:16:49,780 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:16:49,780 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:16:49,782 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:16:49,782 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:16:49,782 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:16:49,782 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:16:49,783 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:16:49,783 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:16:49,783 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:16:49,783 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:16:49,783 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:16:49,783 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:16:49,784 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:16:49,784 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:16:49,784 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:16:49,784 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:16:49,784 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:16:49,785 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:16:49,785 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:16:49,785 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:16:49,785 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:16:49,785 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:16:49,786 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:16:49,786 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:16:49,786 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:16:49,786 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:16:49,786 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:16:49,787 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:16:49,787 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 11:16:49,826 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:16:49,839 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:16:49,842 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:16:49,843 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:16:49,844 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:16:49,844 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy1_true-unreach-call_ground.i [2019-05-23 11:16:49,902 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe5ae2633/d78c59f5de564ac1b222b6a1db7074df/FLAGef27483e2 [2019-05-23 11:16:50,317 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:16:50,318 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy1_true-unreach-call_ground.i [2019-05-23 11:16:50,325 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe5ae2633/d78c59f5de564ac1b222b6a1db7074df/FLAGef27483e2 [2019-05-23 11:16:50,689 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe5ae2633/d78c59f5de564ac1b222b6a1db7074df [2019-05-23 11:16:50,699 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:16:50,701 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:16:50,702 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:50,702 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:16:50,706 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:16:50,707 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,710 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b7bf88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50, skipping insertion in model container [2019-05-23 11:16:50,710 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,718 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:16:50,735 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:16:50,950 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:50,957 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:16:50,981 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:51,001 INFO L146 ILogger]: Completed translation [2019-05-23 11:16:51,002 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51 WrapperNode [2019-05-23 11:16:51,002 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:51,003 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:51,003 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:16:51,003 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:16:51,012 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,020 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,040 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:51,040 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:16:51,041 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:16:51,041 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:16:51,048 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,048 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,050 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,050 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,056 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,148 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,149 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,151 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:16:51,151 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:16:51,151 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:16:51,152 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:16:51,152 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (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 11:16:51,211 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:16:51,211 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:16:51,212 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:16:51,212 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:16:51,212 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:16:51,212 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:16:51,648 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:16:51,648 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:16:51,650 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:51 BoogieIcfgContainer [2019-05-23 11:16:51,650 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:16:51,651 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:16:51,651 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:16:51,654 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:16:51,654 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:16:50" (1/3) ... [2019-05-23 11:16:51,655 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d9f709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:51, skipping insertion in model container [2019-05-23 11:16:51,655 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51" (2/3) ... [2019-05-23 11:16:51,655 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d9f709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:51, skipping insertion in model container [2019-05-23 11:16:51,656 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:51" (3/3) ... [2019-05-23 11:16:51,657 INFO L146 ILogger]: Analyzing ICFG standard_copy1_true-unreach-call_ground.i [2019-05-23 11:16:51,665 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:16:51,673 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:16:51,690 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:16:51,719 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:16:51,720 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:16:51,720 INFO L146 ILogger]: Hoare is true [2019-05-23 11:16:51,720 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:16:51,720 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:16:51,720 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:16:51,721 INFO L146 ILogger]: Difference is false [2019-05-23 11:16:51,721 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:16:51,721 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:16:51,737 INFO L146 ILogger]: Start isEmpty. Operand 48 states. [2019-05-23 11:16:51,744 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:16:51,744 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:51,745 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:51,747 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:51,752 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:51,753 INFO L146 ILogger]: Analyzing trace with hash 1517885427, now seen corresponding path program 1 times [2019-05-23 11:16:51,754 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:51,755 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:51,797 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,798 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:51,798 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,840 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:51,876 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 11:16:51,878 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:51,879 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:16:51,882 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:16:51,894 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:16:51,895 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:16:51,897 INFO L146 ILogger]: Start difference. First operand 48 states. Second operand 2 states. [2019-05-23 11:16:51,915 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:51,916 INFO L146 ILogger]: Finished difference Result 81 states and 91 transitions. [2019-05-23 11:16:51,916 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:16:51,917 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 22 [2019-05-23 11:16:51,918 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:51,929 INFO L146 ILogger]: With dead ends: 81 [2019-05-23 11:16:51,929 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:16:51,933 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 11:16:51,952 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:16:51,970 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-05-23 11:16:51,971 INFO L146 ILogger]: Start removeUnreachable. Operand 40 states. [2019-05-23 11:16:51,973 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2019-05-23 11:16:51,974 INFO L146 ILogger]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 22 [2019-05-23 11:16:51,975 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:51,975 INFO L146 ILogger]: Abstraction has 40 states and 42 transitions. [2019-05-23 11:16:51,975 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:16:51,975 INFO L146 ILogger]: Start isEmpty. Operand 40 states and 42 transitions. [2019-05-23 11:16:51,976 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:16:51,977 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:51,977 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:51,977 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:51,978 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:51,978 INFO L146 ILogger]: Analyzing trace with hash -1510904290, now seen corresponding path program 1 times [2019-05-23 11:16:51,978 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:51,978 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:51,980 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,981 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:51,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,995 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,078 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 11:16:52,078 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:52,079 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:52,080 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:52,080 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:52,081 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:52,081 INFO L146 ILogger]: Start difference. First operand 40 states and 42 transitions. Second operand 3 states. [2019-05-23 11:16:52,242 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:52,243 INFO L146 ILogger]: Finished difference Result 71 states and 75 transitions. [2019-05-23 11:16:52,245 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:52,245 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 22 [2019-05-23 11:16:52,245 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:52,246 INFO L146 ILogger]: With dead ends: 71 [2019-05-23 11:16:52,246 INFO L146 ILogger]: Without dead ends: 46 [2019-05-23 11:16:52,248 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 11:16:52,248 INFO L146 ILogger]: Start minimizeSevpa. Operand 46 states. [2019-05-23 11:16:52,253 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 46 to 41. [2019-05-23 11:16:52,253 INFO L146 ILogger]: Start removeUnreachable. Operand 41 states. [2019-05-23 11:16:52,255 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2019-05-23 11:16:52,255 INFO L146 ILogger]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 22 [2019-05-23 11:16:52,255 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:52,255 INFO L146 ILogger]: Abstraction has 41 states and 43 transitions. [2019-05-23 11:16:52,255 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:52,256 INFO L146 ILogger]: Start isEmpty. Operand 41 states and 43 transitions. [2019-05-23 11:16:52,257 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:16:52,257 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,257 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] [2019-05-23 11:16:52,257 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,258 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,258 INFO L146 ILogger]: Analyzing trace with hash 1435563144, now seen corresponding path program 1 times [2019-05-23 11:16:52,258 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,258 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,259 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,280 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,376 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:52,376 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:52,376 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 11:16:52,395 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,439 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,441 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:16:52,448 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:52,529 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:16:52,550 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:16:52,550 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:16:52,551 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:16:52,551 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:16:52,552 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:16:52,553 INFO L146 ILogger]: Start difference. First operand 41 states and 43 transitions. Second operand 6 states. [2019-05-23 11:16:52,942 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:52,943 INFO L146 ILogger]: Finished difference Result 84 states and 89 transitions. [2019-05-23 11:16:52,944 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:16:52,944 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 29 [2019-05-23 11:16:52,944 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:52,945 INFO L146 ILogger]: With dead ends: 84 [2019-05-23 11:16:52,945 INFO L146 ILogger]: Without dead ends: 59 [2019-05-23 11:16:52,946 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:16:52,947 INFO L146 ILogger]: Start minimizeSevpa. Operand 59 states. [2019-05-23 11:16:52,951 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 59 to 49. [2019-05-23 11:16:52,951 INFO L146 ILogger]: Start removeUnreachable. Operand 49 states. [2019-05-23 11:16:52,952 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2019-05-23 11:16:52,953 INFO L146 ILogger]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 29 [2019-05-23 11:16:52,953 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:52,953 INFO L146 ILogger]: Abstraction has 49 states and 51 transitions. [2019-05-23 11:16:52,954 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:16:52,954 INFO L146 ILogger]: Start isEmpty. Operand 49 states and 51 transitions. [2019-05-23 11:16:52,955 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 44 [2019-05-23 11:16:52,955 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,955 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:52,955 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,956 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,956 INFO L146 ILogger]: Analyzing trace with hash 201804298, now seen corresponding path program 1 times [2019-05-23 11:16:52,956 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,956 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,957 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,957 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,958 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,974 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,041 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:16:53,042 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:53,042 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 11:16:53,062 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:53,107 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,108 INFO L146 ILogger]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:53,113 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:53,346 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:16:53,369 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:53,370 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:16:53,370 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:16:53,370 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:16:53,371 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:16:53,371 INFO L146 ILogger]: Start difference. First operand 49 states and 51 transitions. Second operand 10 states. [2019-05-23 11:16:53,919 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,919 INFO L146 ILogger]: Finished difference Result 99 states and 104 transitions. [2019-05-23 11:16:53,919 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:16:53,919 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 43 [2019-05-23 11:16:53,920 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,921 INFO L146 ILogger]: With dead ends: 99 [2019-05-23 11:16:53,921 INFO L146 ILogger]: Without dead ends: 73 [2019-05-23 11:16:53,923 INFO L146 ILogger]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:16:53,923 INFO L146 ILogger]: Start minimizeSevpa. Operand 73 states. [2019-05-23 11:16:53,928 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 73 to 63. [2019-05-23 11:16:53,929 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:16:53,930 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2019-05-23 11:16:53,930 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 43 [2019-05-23 11:16:53,930 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,930 INFO L146 ILogger]: Abstraction has 63 states and 65 transitions. [2019-05-23 11:16:53,931 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:16:53,931 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 65 transitions. [2019-05-23 11:16:53,932 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:16:53,932 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,933 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:53,933 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,933 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,933 INFO L146 ILogger]: Analyzing trace with hash 1426603208, now seen corresponding path program 2 times [2019-05-23 11:16:53,933 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,934 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,934 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,935 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:53,935 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,958 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,096 INFO L146 ILogger]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:16:54,096 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:54,096 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 11:16:54,115 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:54,171 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:54,171 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,172 INFO L146 ILogger]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:16:54,176 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:54,327 INFO L146 ILogger]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:16:54,348 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:54,348 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:16:54,348 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:16:54,349 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:16:54,349 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:16:54,350 INFO L146 ILogger]: Start difference. First operand 63 states and 65 transitions. Second operand 11 states. [2019-05-23 11:16:54,587 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:54,587 INFO L146 ILogger]: Finished difference Result 108 states and 112 transitions. [2019-05-23 11:16:54,588 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:16:54,588 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 57 [2019-05-23 11:16:54,588 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:54,589 INFO L146 ILogger]: With dead ends: 108 [2019-05-23 11:16:54,589 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:16:54,592 INFO L146 ILogger]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:16:54,593 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:16:54,605 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 70. [2019-05-23 11:16:54,605 INFO L146 ILogger]: Start removeUnreachable. Operand 70 states. [2019-05-23 11:16:54,606 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2019-05-23 11:16:54,607 INFO L146 ILogger]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 57 [2019-05-23 11:16:54,607 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:54,607 INFO L146 ILogger]: Abstraction has 70 states and 72 transitions. [2019-05-23 11:16:54,607 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:16:54,611 INFO L146 ILogger]: Start isEmpty. Operand 70 states and 72 transitions. [2019-05-23 11:16:54,613 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 65 [2019-05-23 11:16:54,613 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:54,614 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:54,614 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:54,614 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:54,614 INFO L146 ILogger]: Analyzing trace with hash -2101850594, now seen corresponding path program 3 times [2019-05-23 11:16:54,618 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:54,618 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:54,620 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,620 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:54,620 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,678 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:55,046 INFO L146 ILogger]: Checked inductivity of 55 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:16:55,046 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:55,047 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 11:16:55,055 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:55,105 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:16:55,105 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:55,106 INFO L146 ILogger]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:55,108 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:55,316 INFO L146 ILogger]: Checked inductivity of 55 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:16:55,334 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:55,335 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:16:55,335 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:16:55,335 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:16:55,336 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:16:55,336 INFO L146 ILogger]: Start difference. First operand 70 states and 72 transitions. Second operand 16 states. [2019-05-23 11:16:55,816 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:55,817 INFO L146 ILogger]: Finished difference Result 127 states and 132 transitions. [2019-05-23 11:16:55,823 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:16:55,823 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 64 [2019-05-23 11:16:55,823 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:55,824 INFO L146 ILogger]: With dead ends: 127 [2019-05-23 11:16:55,824 INFO L146 ILogger]: Without dead ends: 94 [2019-05-23 11:16:55,825 INFO L146 ILogger]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:16:55,826 INFO L146 ILogger]: Start minimizeSevpa. Operand 94 states. [2019-05-23 11:16:55,831 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 94 to 84. [2019-05-23 11:16:55,832 INFO L146 ILogger]: Start removeUnreachable. Operand 84 states. [2019-05-23 11:16:55,832 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2019-05-23 11:16:55,833 INFO L146 ILogger]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 64 [2019-05-23 11:16:55,833 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:55,833 INFO L146 ILogger]: Abstraction has 84 states and 86 transitions. [2019-05-23 11:16:55,833 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:16:55,833 INFO L146 ILogger]: Start isEmpty. Operand 84 states and 86 transitions. [2019-05-23 11:16:55,835 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:16:55,835 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:55,835 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2019-05-23 11:16:55,835 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:55,835 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:55,836 INFO L146 ILogger]: Analyzing trace with hash -81323616, now seen corresponding path program 4 times [2019-05-23 11:16:55,836 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:55,836 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:55,837 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:55,837 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:55,837 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:55,856 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,052 INFO L146 ILogger]: Checked inductivity of 99 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:16:56,052 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:56,052 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 11:16:56,062 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:56,115 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:56,115 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,116 INFO L146 ILogger]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:16:56,120 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:56,294 INFO L146 ILogger]: Checked inductivity of 99 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:16:56,313 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:56,313 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:16:56,314 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:16:56,314 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:16:56,314 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:16:56,314 INFO L146 ILogger]: Start difference. First operand 84 states and 86 transitions. Second operand 15 states. [2019-05-23 11:16:56,520 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:56,520 INFO L146 ILogger]: Finished difference Result 136 states and 140 transitions. [2019-05-23 11:16:56,527 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:16:56,527 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 78 [2019-05-23 11:16:56,527 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:56,528 INFO L146 ILogger]: With dead ends: 136 [2019-05-23 11:16:56,528 INFO L146 ILogger]: Without dead ends: 96 [2019-05-23 11:16:56,533 INFO L146 ILogger]: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:16:56,533 INFO L146 ILogger]: Start minimizeSevpa. Operand 96 states. [2019-05-23 11:16:56,539 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 96 to 91. [2019-05-23 11:16:56,540 INFO L146 ILogger]: Start removeUnreachable. Operand 91 states. [2019-05-23 11:16:56,541 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2019-05-23 11:16:56,541 INFO L146 ILogger]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 78 [2019-05-23 11:16:56,541 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:56,541 INFO L146 ILogger]: Abstraction has 91 states and 93 transitions. [2019-05-23 11:16:56,542 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:16:56,542 INFO L146 ILogger]: Start isEmpty. Operand 91 states and 93 transitions. [2019-05-23 11:16:56,543 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:16:56,543 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:56,543 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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] [2019-05-23 11:16:56,544 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:56,544 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:56,544 INFO L146 ILogger]: Analyzing trace with hash 1304975882, now seen corresponding path program 5 times [2019-05-23 11:16:56,544 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:56,544 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:56,545 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,545 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:56,545 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,564 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,771 INFO L146 ILogger]: Checked inductivity of 135 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:16:56,771 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:56,771 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:16:56,780 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:56,947 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:16:56,947 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,949 INFO L146 ILogger]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:16:56,952 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:57,635 INFO L146 ILogger]: Checked inductivity of 135 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:16:57,654 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:57,654 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:16:57,655 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:16:57,655 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:16:57,656 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:16:57,656 INFO L146 ILogger]: Start difference. First operand 91 states and 93 transitions. Second operand 22 states. [2019-05-23 11:16:58,311 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:58,311 INFO L146 ILogger]: Finished difference Result 155 states and 160 transitions. [2019-05-23 11:16:58,312 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:16:58,312 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 85 [2019-05-23 11:16:58,313 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:58,314 INFO L146 ILogger]: With dead ends: 155 [2019-05-23 11:16:58,314 INFO L146 ILogger]: Without dead ends: 115 [2019-05-23 11:16:58,316 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:16:58,316 INFO L146 ILogger]: Start minimizeSevpa. Operand 115 states. [2019-05-23 11:16:58,322 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 115 to 105. [2019-05-23 11:16:58,322 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:16:58,323 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2019-05-23 11:16:58,323 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 85 [2019-05-23 11:16:58,324 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:58,324 INFO L146 ILogger]: Abstraction has 105 states and 107 transitions. [2019-05-23 11:16:58,324 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:16:58,324 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 107 transitions. [2019-05-23 11:16:58,325 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 100 [2019-05-23 11:16:58,326 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:58,326 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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] [2019-05-23 11:16:58,326 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:58,326 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:58,326 INFO L146 ILogger]: Analyzing trace with hash -2022619064, now seen corresponding path program 6 times [2019-05-23 11:16:58,327 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:58,327 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:58,328 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,328 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:58,328 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,346 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,644 INFO L146 ILogger]: Checked inductivity of 200 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:16:58,644 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:58,644 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 11:16:58,658 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:58,733 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-05-23 11:16:58,733 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,734 INFO L146 ILogger]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:16:58,737 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:58,930 INFO L146 ILogger]: Checked inductivity of 200 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-05-23 11:16:58,948 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:58,948 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 26 [2019-05-23 11:16:58,949 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:16:58,949 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:16:58,950 INFO L146 ILogger]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:16:58,950 INFO L146 ILogger]: Start difference. First operand 105 states and 107 transitions. Second operand 26 states. [2019-05-23 11:16:59,481 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:59,482 INFO L146 ILogger]: Finished difference Result 176 states and 181 transitions. [2019-05-23 11:16:59,482 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:16:59,483 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 99 [2019-05-23 11:16:59,483 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:59,484 INFO L146 ILogger]: With dead ends: 176 [2019-05-23 11:16:59,484 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:16:59,485 INFO L146 ILogger]: 0 DeclaredPredicates, 137 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=440, Invalid=1816, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:16:59,486 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:16:59,491 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 119. [2019-05-23 11:16:59,491 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:16:59,492 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2019-05-23 11:16:59,492 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 99 [2019-05-23 11:16:59,492 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:59,492 INFO L146 ILogger]: Abstraction has 119 states and 121 transitions. [2019-05-23 11:16:59,492 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:16:59,492 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 121 transitions. [2019-05-23 11:16:59,494 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:16:59,494 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:59,494 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:59,495 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:59,495 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:59,495 INFO L146 ILogger]: Analyzing trace with hash -2011949366, now seen corresponding path program 7 times [2019-05-23 11:16:59,495 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:59,495 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:59,496 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,496 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:59,496 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,515 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,750 INFO L146 ILogger]: Checked inductivity of 279 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:16:59,750 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:59,751 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 11:16:59,762 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:59,786 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,787 INFO L146 ILogger]: Trace formula consists of 179 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:16:59,791 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:59,845 INFO L146 ILogger]: Checked inductivity of 279 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:16:59,866 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:59,866 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:16:59,867 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:16:59,867 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:16:59,867 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:16:59,867 INFO L146 ILogger]: Start difference. First operand 119 states and 121 transitions. Second operand 21 states. [2019-05-23 11:17:00,228 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:00,229 INFO L146 ILogger]: Finished difference Result 185 states and 189 transitions. [2019-05-23 11:17:00,231 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:17:00,231 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 113 [2019-05-23 11:17:00,232 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:00,232 INFO L146 ILogger]: With dead ends: 185 [2019-05-23 11:17:00,232 INFO L146 ILogger]: Without dead ends: 131 [2019-05-23 11:17:00,233 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:17:00,235 INFO L146 ILogger]: Start minimizeSevpa. Operand 131 states. [2019-05-23 11:17:00,247 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 131 to 126. [2019-05-23 11:17:00,247 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:17:00,248 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2019-05-23 11:17:00,248 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 113 [2019-05-23 11:17:00,248 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:00,249 INFO L146 ILogger]: Abstraction has 126 states and 128 transitions. [2019-05-23 11:17:00,249 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:17:00,251 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 128 transitions. [2019-05-23 11:17:00,253 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:17:00,253 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:00,253 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:00,253 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:00,254 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:00,254 INFO L146 ILogger]: Analyzing trace with hash 1511534112, now seen corresponding path program 8 times [2019-05-23 11:17:00,254 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:00,254 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:00,255 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:00,255 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:00,255 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:00,276 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,684 INFO L146 ILogger]: Checked inductivity of 336 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:17:00,684 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:00,685 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 11:17:00,694 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:00,722 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:00,722 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,723 INFO L146 ILogger]: Trace formula consists of 189 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:17:00,725 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:00,839 INFO L146 ILogger]: Checked inductivity of 336 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:17:00,858 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:00,859 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:17:00,859 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:17:00,859 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:17:00,860 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:17:00,860 INFO L146 ILogger]: Start difference. First operand 126 states and 128 transitions. Second operand 23 states. [2019-05-23 11:17:01,465 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:01,465 INFO L146 ILogger]: Finished difference Result 192 states and 196 transitions. [2019-05-23 11:17:01,468 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:17:01,468 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 120 [2019-05-23 11:17:01,468 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:01,469 INFO L146 ILogger]: With dead ends: 192 [2019-05-23 11:17:01,469 INFO L146 ILogger]: Without dead ends: 138 [2019-05-23 11:17:01,470 INFO L146 ILogger]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:17:01,472 INFO L146 ILogger]: Start minimizeSevpa. Operand 138 states. [2019-05-23 11:17:01,477 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 138 to 133. [2019-05-23 11:17:01,478 INFO L146 ILogger]: Start removeUnreachable. Operand 133 states. [2019-05-23 11:17:01,483 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2019-05-23 11:17:01,483 INFO L146 ILogger]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 120 [2019-05-23 11:17:01,484 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:01,484 INFO L146 ILogger]: Abstraction has 133 states and 135 transitions. [2019-05-23 11:17:01,484 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:17:01,484 INFO L146 ILogger]: Start isEmpty. Operand 133 states and 135 transitions. [2019-05-23 11:17:01,488 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 128 [2019-05-23 11:17:01,488 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:01,488 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:01,488 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:01,489 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:01,492 INFO L146 ILogger]: Analyzing trace with hash 474040842, now seen corresponding path program 9 times [2019-05-23 11:17:01,492 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:01,492 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:01,493 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,493 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:01,493 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,515 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,428 INFO L146 ILogger]: Checked inductivity of 400 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:17:02,429 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:02,429 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 11:17:02,440 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:02,500 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:17:02,501 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,501 INFO L146 ILogger]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:17:02,503 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:02,690 INFO L146 ILogger]: Checked inductivity of 400 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2019-05-23 11:17:02,708 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:02,709 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 34 [2019-05-23 11:17:02,709 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:17:02,709 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:17:02,710 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:17:02,710 INFO L146 ILogger]: Start difference. First operand 133 states and 135 transitions. Second operand 34 states. [2019-05-23 11:17:03,708 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:03,708 INFO L146 ILogger]: Finished difference Result 211 states and 216 transitions. [2019-05-23 11:17:03,709 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:17:03,709 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 127 [2019-05-23 11:17:03,709 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:03,710 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:17:03,710 INFO L146 ILogger]: Without dead ends: 157 [2019-05-23 11:17:03,712 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=780, Invalid=3252, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:17:03,712 INFO L146 ILogger]: Start minimizeSevpa. Operand 157 states. [2019-05-23 11:17:03,716 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 157 to 147. [2019-05-23 11:17:03,716 INFO L146 ILogger]: Start removeUnreachable. Operand 147 states. [2019-05-23 11:17:03,717 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2019-05-23 11:17:03,717 INFO L146 ILogger]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 127 [2019-05-23 11:17:03,717 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:03,717 INFO L146 ILogger]: Abstraction has 147 states and 149 transitions. [2019-05-23 11:17:03,717 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:17:03,718 INFO L146 ILogger]: Start isEmpty. Operand 147 states and 149 transitions. [2019-05-23 11:17:03,719 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 142 [2019-05-23 11:17:03,719 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:03,719 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:03,719 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:03,720 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:03,720 INFO L146 ILogger]: Analyzing trace with hash -185855032, now seen corresponding path program 10 times [2019-05-23 11:17:03,720 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:03,720 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:03,721 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,721 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:03,721 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,738 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,074 INFO L146 ILogger]: Checked inductivity of 507 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:17:04,074 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:04,074 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 11:17:04,083 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:04,198 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:04,199 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,200 INFO L146 ILogger]: Trace formula consists of 219 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:17:04,202 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:04,255 INFO L146 ILogger]: Checked inductivity of 507 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:17:04,280 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:04,280 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:17:04,281 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:17:04,281 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:17:04,281 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:17:04,281 INFO L146 ILogger]: Start difference. First operand 147 states and 149 transitions. Second operand 27 states. [2019-05-23 11:17:04,897 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:04,898 INFO L146 ILogger]: Finished difference Result 220 states and 224 transitions. [2019-05-23 11:17:04,898 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:17:04,898 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 141 [2019-05-23 11:17:04,898 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:04,899 INFO L146 ILogger]: With dead ends: 220 [2019-05-23 11:17:04,899 INFO L146 ILogger]: Without dead ends: 159 [2019-05-23 11:17:04,900 INFO L146 ILogger]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:17:04,901 INFO L146 ILogger]: Start minimizeSevpa. Operand 159 states. [2019-05-23 11:17:04,904 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 159 to 154. [2019-05-23 11:17:04,904 INFO L146 ILogger]: Start removeUnreachable. Operand 154 states. [2019-05-23 11:17:04,904 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2019-05-23 11:17:04,905 INFO L146 ILogger]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 141 [2019-05-23 11:17:04,905 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:04,905 INFO L146 ILogger]: Abstraction has 154 states and 156 transitions. [2019-05-23 11:17:04,905 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:17:04,905 INFO L146 ILogger]: Start isEmpty. Operand 154 states and 156 transitions. [2019-05-23 11:17:04,906 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 149 [2019-05-23 11:17:04,907 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:04,907 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:04,907 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:04,907 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:04,907 INFO L146 ILogger]: Analyzing trace with hash 1733193246, now seen corresponding path program 11 times [2019-05-23 11:17:04,908 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:04,908 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:04,908 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,908 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:04,909 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,925 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:05,988 INFO L146 ILogger]: Checked inductivity of 585 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:17:05,988 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:05,988 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 11:17:05,999 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:06,478 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:17:06,478 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:06,481 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:17:06,482 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:06,822 INFO L146 ILogger]: Checked inductivity of 585 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2019-05-23 11:17:06,842 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:06,842 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 15] total 40 [2019-05-23 11:17:06,843 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:17:06,843 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:17:06,844 INFO L146 ILogger]: CoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:17:06,844 INFO L146 ILogger]: Start difference. First operand 154 states and 156 transitions. Second operand 40 states. [2019-05-23 11:17:07,915 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:07,915 INFO L146 ILogger]: Finished difference Result 239 states and 244 transitions. [2019-05-23 11:17:07,917 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-05-23 11:17:07,917 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 148 [2019-05-23 11:17:07,917 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:07,918 INFO L146 ILogger]: With dead ends: 239 [2019-05-23 11:17:07,918 INFO L146 ILogger]: Without dead ends: 178 [2019-05-23 11:17:07,921 INFO L146 ILogger]: 0 DeclaredPredicates, 210 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1085, Invalid=4615, Unknown=0, NotChecked=0, Total=5700 [2019-05-23 11:17:07,921 INFO L146 ILogger]: Start minimizeSevpa. Operand 178 states. [2019-05-23 11:17:07,924 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 178 to 168. [2019-05-23 11:17:07,925 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:17:07,925 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2019-05-23 11:17:07,925 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 148 [2019-05-23 11:17:07,926 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:07,926 INFO L146 ILogger]: Abstraction has 168 states and 170 transitions. [2019-05-23 11:17:07,926 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:17:07,926 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 170 transitions. [2019-05-23 11:17:07,927 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:17:07,928 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:07,928 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:07,928 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:07,928 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:07,928 INFO L146 ILogger]: Analyzing trace with hash -1108639072, now seen corresponding path program 12 times [2019-05-23 11:17:07,929 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:07,929 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:07,929 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:07,930 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:07,930 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:07,946 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:08,400 INFO L146 ILogger]: Checked inductivity of 713 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-05-23 11:17:08,400 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:08,400 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 11:17:08,409 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:09,570 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2019-05-23 11:17:09,570 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:09,574 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:17:09,577 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:09,972 INFO L146 ILogger]: Checked inductivity of 713 backedges. 85 proven. 154 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2019-05-23 11:17:09,993 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:09,993 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 20] total 47 [2019-05-23 11:17:09,994 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:17:09,994 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:17:09,995 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=1811, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:17:09,995 INFO L146 ILogger]: Start difference. First operand 168 states and 170 transitions. Second operand 47 states. [2019-05-23 11:17:11,727 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:11,728 INFO L146 ILogger]: Finished difference Result 260 states and 265 transitions. [2019-05-23 11:17:11,728 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-05-23 11:17:11,728 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 162 [2019-05-23 11:17:11,729 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:11,730 INFO L146 ILogger]: With dead ends: 260 [2019-05-23 11:17:11,730 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:17:11,734 INFO L146 ILogger]: 0 DeclaredPredicates, 241 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1682, Invalid=7824, Unknown=0, NotChecked=0, Total=9506 [2019-05-23 11:17:11,734 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:17:11,737 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 182. [2019-05-23 11:17:11,737 INFO L146 ILogger]: Start removeUnreachable. Operand 182 states. [2019-05-23 11:17:11,737 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 182 states to 182 states and 184 transitions. [2019-05-23 11:17:11,738 INFO L146 ILogger]: Start accepts. Automaton has 182 states and 184 transitions. Word has length 162 [2019-05-23 11:17:11,738 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:11,738 INFO L146 ILogger]: Abstraction has 182 states and 184 transitions. [2019-05-23 11:17:11,738 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:17:11,738 INFO L146 ILogger]: Start isEmpty. Operand 182 states and 184 transitions. [2019-05-23 11:17:11,739 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 177 [2019-05-23 11:17:11,739 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:11,739 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:11,739 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:11,740 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:11,740 INFO L146 ILogger]: Analyzing trace with hash 1965312350, now seen corresponding path program 13 times [2019-05-23 11:17:11,740 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:11,740 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:11,741 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:11,741 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:11,741 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:11,756 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:12,124 INFO L146 ILogger]: Checked inductivity of 855 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2019-05-23 11:17:12,124 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:12,124 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 11:17:12,132 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:12,184 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:12,185 INFO L146 ILogger]: Trace formula consists of 269 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:17:12,188 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:12,283 INFO L146 ILogger]: Checked inductivity of 855 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2019-05-23 11:17:12,301 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:12,301 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:17:12,301 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:17:12,302 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:17:12,302 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:17:12,302 INFO L146 ILogger]: Start difference. First operand 182 states and 184 transitions. Second operand 33 states. [2019-05-23 11:17:12,925 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:12,926 INFO L146 ILogger]: Finished difference Result 269 states and 273 transitions. [2019-05-23 11:17:12,926 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:17:12,926 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 176 [2019-05-23 11:17:12,926 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:12,927 INFO L146 ILogger]: With dead ends: 269 [2019-05-23 11:17:12,927 INFO L146 ILogger]: Without dead ends: 194 [2019-05-23 11:17:12,929 INFO L146 ILogger]: 0 DeclaredPredicates, 234 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:17:12,929 INFO L146 ILogger]: Start minimizeSevpa. Operand 194 states. [2019-05-23 11:17:12,932 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 194 to 189. [2019-05-23 11:17:12,933 INFO L146 ILogger]: Start removeUnreachable. Operand 189 states. [2019-05-23 11:17:12,933 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2019-05-23 11:17:12,933 INFO L146 ILogger]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 176 [2019-05-23 11:17:12,934 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:12,934 INFO L146 ILogger]: Abstraction has 189 states and 191 transitions. [2019-05-23 11:17:12,934 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:17:12,934 INFO L146 ILogger]: Start isEmpty. Operand 189 states and 191 transitions. [2019-05-23 11:17:12,935 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 184 [2019-05-23 11:17:12,935 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:12,935 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:12,935 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:12,936 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:12,936 INFO L146 ILogger]: Analyzing trace with hash -1634689208, now seen corresponding path program 14 times [2019-05-23 11:17:12,936 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:12,936 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:12,937 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:12,937 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:12,937 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:12,953 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:13,356 INFO L146 ILogger]: Checked inductivity of 954 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2019-05-23 11:17:13,357 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:13,357 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 11:17:13,365 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:13,407 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:13,408 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:13,409 INFO L146 ILogger]: Trace formula consists of 279 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:17:13,410 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:13,524 INFO L146 ILogger]: Checked inductivity of 954 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2019-05-23 11:17:13,543 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:13,543 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:17:13,543 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:17:13,544 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:17:13,544 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:17:13,544 INFO L146 ILogger]: Start difference. First operand 189 states and 191 transitions. Second operand 35 states. [2019-05-23 11:17:14,150 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:14,150 INFO L146 ILogger]: Finished difference Result 276 states and 280 transitions. [2019-05-23 11:17:14,151 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:17:14,151 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 183 [2019-05-23 11:17:14,151 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:14,153 INFO L146 ILogger]: With dead ends: 276 [2019-05-23 11:17:14,153 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:17:14,155 INFO L146 ILogger]: 0 DeclaredPredicates, 245 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:17:14,155 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:17:14,157 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 196. [2019-05-23 11:17:14,158 INFO L146 ILogger]: Start removeUnreachable. Operand 196 states. [2019-05-23 11:17:14,158 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions. [2019-05-23 11:17:14,159 INFO L146 ILogger]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 183 [2019-05-23 11:17:14,159 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:14,159 INFO L146 ILogger]: Abstraction has 196 states and 198 transitions. [2019-05-23 11:17:14,159 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:17:14,159 INFO L146 ILogger]: Start isEmpty. Operand 196 states and 198 transitions. [2019-05-23 11:17:14,160 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 191 [2019-05-23 11:17:14,160 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:14,160 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:14,161 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:14,161 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:14,161 INFO L146 ILogger]: Analyzing trace with hash -77746658, now seen corresponding path program 15 times [2019-05-23 11:17:14,161 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:14,161 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:14,162 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,162 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:14,162 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,179 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,642 INFO L146 ILogger]: Checked inductivity of 1060 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2019-05-23 11:17:14,643 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:14,643 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 11:17:14,651 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:14,935 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-05-23 11:17:14,935 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,936 INFO L146 ILogger]: Trace formula consists of 209 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:17:14,938 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:15,311 INFO L146 ILogger]: Checked inductivity of 1060 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2019-05-23 11:17:15,329 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:15,329 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 19] total 52 [2019-05-23 11:17:15,330 INFO L146 ILogger]: Interpolant automaton has 52 states [2019-05-23 11:17:15,330 INFO L146 ILogger]: Constructing interpolant automaton starting with 52 interpolants. [2019-05-23 11:17:15,331 INFO L146 ILogger]: CoverageRelationStatistics Valid=421, Invalid=2231, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:17:15,331 INFO L146 ILogger]: Start difference. First operand 196 states and 198 transitions. Second operand 52 states. [2019-05-23 11:17:17,057 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:17,057 INFO L146 ILogger]: Finished difference Result 295 states and 300 transitions. [2019-05-23 11:17:17,061 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-05-23 11:17:17,062 INFO L146 ILogger]: Start accepts. Automaton has 52 states. Word has length 190 [2019-05-23 11:17:17,062 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:17,063 INFO L146 ILogger]: With dead ends: 295 [2019-05-23 11:17:17,063 INFO L146 ILogger]: Without dead ends: 220 [2019-05-23 11:17:17,066 INFO L146 ILogger]: 0 DeclaredPredicates, 272 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1951 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1845, Invalid=8055, Unknown=0, NotChecked=0, Total=9900 [2019-05-23 11:17:17,066 INFO L146 ILogger]: Start minimizeSevpa. Operand 220 states. [2019-05-23 11:17:17,070 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 220 to 210. [2019-05-23 11:17:17,070 INFO L146 ILogger]: Start removeUnreachable. Operand 210 states. [2019-05-23 11:17:17,071 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 210 states to 210 states and 212 transitions. [2019-05-23 11:17:17,071 INFO L146 ILogger]: Start accepts. Automaton has 210 states and 212 transitions. Word has length 190 [2019-05-23 11:17:17,071 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:17,071 INFO L146 ILogger]: Abstraction has 210 states and 212 transitions. [2019-05-23 11:17:17,071 INFO L146 ILogger]: Interpolant automaton has 52 states. [2019-05-23 11:17:17,072 INFO L146 ILogger]: Start isEmpty. Operand 210 states and 212 transitions. [2019-05-23 11:17:17,073 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 205 [2019-05-23 11:17:17,073 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:17,074 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:17,074 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:17,074 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:17,074 INFO L146 ILogger]: Analyzing trace with hash 864622368, now seen corresponding path program 16 times [2019-05-23 11:17:17,075 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:17,075 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:17,075 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:17,075 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:17,076 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:17,096 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:17,654 INFO L146 ILogger]: Checked inductivity of 1230 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2019-05-23 11:17:17,655 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:17,655 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 11:17:17,663 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:17,973 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:17,973 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:17,975 INFO L146 ILogger]: Trace formula consists of 309 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:17:17,977 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:18,046 INFO L146 ILogger]: Checked inductivity of 1230 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2019-05-23 11:17:18,065 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:18,065 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:17:18,066 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:17:18,066 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:17:18,066 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:17:18,067 INFO L146 ILogger]: Start difference. First operand 210 states and 212 transitions. Second operand 39 states. [2019-05-23 11:17:19,184 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:19,185 INFO L146 ILogger]: Finished difference Result 304 states and 308 transitions. [2019-05-23 11:17:19,186 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:17:19,186 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 204 [2019-05-23 11:17:19,186 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:19,187 INFO L146 ILogger]: With dead ends: 304 [2019-05-23 11:17:19,187 INFO L146 ILogger]: Without dead ends: 222 [2019-05-23 11:17:19,188 INFO L146 ILogger]: 0 DeclaredPredicates, 274 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:17:19,189 INFO L146 ILogger]: Start minimizeSevpa. Operand 222 states. [2019-05-23 11:17:19,194 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 222 to 217. [2019-05-23 11:17:19,194 INFO L146 ILogger]: Start removeUnreachable. Operand 217 states. [2019-05-23 11:17:19,195 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 217 states to 217 states and 219 transitions. [2019-05-23 11:17:19,195 INFO L146 ILogger]: Start accepts. Automaton has 217 states and 219 transitions. Word has length 204 [2019-05-23 11:17:19,195 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:19,195 INFO L146 ILogger]: Abstraction has 217 states and 219 transitions. [2019-05-23 11:17:19,195 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:17:19,195 INFO L146 ILogger]: Start isEmpty. Operand 217 states and 219 transitions. [2019-05-23 11:17:19,196 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 212 [2019-05-23 11:17:19,196 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:19,197 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:19,197 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:19,197 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:19,198 INFO L146 ILogger]: Analyzing trace with hash -1931818486, now seen corresponding path program 17 times [2019-05-23 11:17:19,198 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:19,198 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:19,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:19,199 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:19,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:19,216 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:19,739 INFO L146 ILogger]: Checked inductivity of 1350 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2019-05-23 11:17:19,739 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:19,740 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 11:17:19,749 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:32,887 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:17:32,887 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:32,896 INFO L146 ILogger]: Trace formula consists of 319 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:17:32,898 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:32,976 INFO L146 ILogger]: Checked inductivity of 1350 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2019-05-23 11:17:32,998 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:32,998 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:17:32,998 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:17:32,999 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:17:32,999 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:17:32,999 INFO L146 ILogger]: Start difference. First operand 217 states and 219 transitions. Second operand 41 states. [2019-05-23 11:17:33,893 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:33,893 INFO L146 ILogger]: Finished difference Result 311 states and 315 transitions. [2019-05-23 11:17:33,893 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:17:33,894 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 211 [2019-05-23 11:17:33,894 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:33,895 INFO L146 ILogger]: With dead ends: 311 [2019-05-23 11:17:33,895 INFO L146 ILogger]: Without dead ends: 229 [2019-05-23 11:17:33,896 INFO L146 ILogger]: 0 DeclaredPredicates, 285 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:17:33,896 INFO L146 ILogger]: Start minimizeSevpa. Operand 229 states. [2019-05-23 11:17:33,900 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 229 to 224. [2019-05-23 11:17:33,900 INFO L146 ILogger]: Start removeUnreachable. Operand 224 states. [2019-05-23 11:17:33,901 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 224 states to 224 states and 226 transitions. [2019-05-23 11:17:33,901 INFO L146 ILogger]: Start accepts. Automaton has 224 states and 226 transitions. Word has length 211 [2019-05-23 11:17:33,901 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:33,901 INFO L146 ILogger]: Abstraction has 224 states and 226 transitions. [2019-05-23 11:17:33,901 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:17:33,902 INFO L146 ILogger]: Start isEmpty. Operand 224 states and 226 transitions. [2019-05-23 11:17:33,902 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 219 [2019-05-23 11:17:33,903 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:33,903 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:33,903 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:33,903 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:33,904 INFO L146 ILogger]: Analyzing trace with hash -881861664, now seen corresponding path program 18 times [2019-05-23 11:17:33,904 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:33,904 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:33,904 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:33,905 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:33,905 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:33,926 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:34,513 INFO L146 ILogger]: Checked inductivity of 1477 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2019-05-23 11:17:34,514 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:34,514 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:17:34,524 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:39,936 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-05-23 11:17:39,937 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:39,944 INFO L146 ILogger]: Trace formula consists of 319 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:17:39,947 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:41,435 INFO L146 ILogger]: Checked inductivity of 1477 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2019-05-23 11:17:41,455 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:41,456 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 21] total 60 [2019-05-23 11:17:41,456 INFO L146 ILogger]: Interpolant automaton has 60 states [2019-05-23 11:17:41,456 INFO L146 ILogger]: Constructing interpolant automaton starting with 60 interpolants. [2019-05-23 11:17:41,457 INFO L146 ILogger]: CoverageRelationStatistics Valid=559, Invalid=2981, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:17:41,457 INFO L146 ILogger]: Start difference. First operand 224 states and 226 transitions. Second operand 60 states. [2019-05-23 11:17:44,678 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:44,679 INFO L146 ILogger]: Finished difference Result 330 states and 335 transitions. [2019-05-23 11:17:44,679 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2019-05-23 11:17:44,679 INFO L146 ILogger]: Start accepts. Automaton has 60 states. Word has length 218 [2019-05-23 11:17:44,679 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:44,680 INFO L146 ILogger]: With dead ends: 330 [2019-05-23 11:17:44,681 INFO L146 ILogger]: Without dead ends: 248 [2019-05-23 11:17:44,682 INFO L146 ILogger]: 0 DeclaredPredicates, 314 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2657 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2495, Invalid=10845, Unknown=0, NotChecked=0, Total=13340 [2019-05-23 11:17:44,682 INFO L146 ILogger]: Start minimizeSevpa. Operand 248 states. [2019-05-23 11:17:44,686 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 248 to 238. [2019-05-23 11:17:44,686 INFO L146 ILogger]: Start removeUnreachable. Operand 238 states. [2019-05-23 11:17:44,687 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 238 states to 238 states and 240 transitions. [2019-05-23 11:17:44,687 INFO L146 ILogger]: Start accepts. Automaton has 238 states and 240 transitions. Word has length 218 [2019-05-23 11:17:44,687 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:44,688 INFO L146 ILogger]: Abstraction has 238 states and 240 transitions. [2019-05-23 11:17:44,688 INFO L146 ILogger]: Interpolant automaton has 60 states. [2019-05-23 11:17:44,688 INFO L146 ILogger]: Start isEmpty. Operand 238 states and 240 transitions. [2019-05-23 11:17:44,689 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 233 [2019-05-23 11:17:44,689 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:44,689 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:44,689 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:44,690 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:44,690 INFO L146 ILogger]: Analyzing trace with hash -1899688418, now seen corresponding path program 19 times [2019-05-23 11:17:44,690 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:44,690 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:44,691 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:44,691 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:44,691 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:44,708 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:45,708 INFO L146 ILogger]: Checked inductivity of 1675 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2019-05-23 11:17:45,708 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:45,708 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 11:17:45,717 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:45,774 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:45,776 INFO L146 ILogger]: Trace formula consists of 349 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:17:45,779 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:45,904 INFO L146 ILogger]: Checked inductivity of 1675 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2019-05-23 11:17:45,922 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:45,922 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-05-23 11:17:45,922 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:17:45,923 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:17:45,923 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:17:45,923 INFO L146 ILogger]: Start difference. First operand 238 states and 240 transitions. Second operand 45 states. [2019-05-23 11:17:47,351 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:47,352 INFO L146 ILogger]: Finished difference Result 339 states and 343 transitions. [2019-05-23 11:17:47,353 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:17:47,353 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 232 [2019-05-23 11:17:47,354 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:47,356 INFO L146 ILogger]: With dead ends: 339 [2019-05-23 11:17:47,356 INFO L146 ILogger]: Without dead ends: 250 [2019-05-23 11:17:47,357 INFO L146 ILogger]: 0 DeclaredPredicates, 314 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:17:47,358 INFO L146 ILogger]: Start minimizeSevpa. Operand 250 states. [2019-05-23 11:17:47,361 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 250 to 245. [2019-05-23 11:17:47,361 INFO L146 ILogger]: Start removeUnreachable. Operand 245 states. [2019-05-23 11:17:47,362 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 245 states to 245 states and 247 transitions. [2019-05-23 11:17:47,362 INFO L146 ILogger]: Start accepts. Automaton has 245 states and 247 transitions. Word has length 232 [2019-05-23 11:17:47,362 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:47,362 INFO L146 ILogger]: Abstraction has 245 states and 247 transitions. [2019-05-23 11:17:47,362 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:17:47,362 INFO L146 ILogger]: Start isEmpty. Operand 245 states and 247 transitions. [2019-05-23 11:17:47,363 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 240 [2019-05-23 11:17:47,364 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:47,364 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:47,364 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:47,364 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:47,364 INFO L146 ILogger]: Analyzing trace with hash 75406856, now seen corresponding path program 20 times [2019-05-23 11:17:47,364 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:47,365 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:47,365 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:47,365 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:47,365 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:47,385 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:49,093 INFO L146 ILogger]: Checked inductivity of 1816 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2019-05-23 11:17:49,094 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:49,094 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:17:49,102 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:49,156 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:49,156 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:49,157 INFO L146 ILogger]: Trace formula consists of 359 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:17:49,160 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:49,279 INFO L146 ILogger]: Checked inductivity of 1816 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2019-05-23 11:17:49,298 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:49,298 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-05-23 11:17:49,298 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:17:49,299 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:17:49,299 INFO L146 ILogger]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:17:49,299 INFO L146 ILogger]: Start difference. First operand 245 states and 247 transitions. Second operand 47 states. [2019-05-23 11:17:50,469 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:50,470 INFO L146 ILogger]: Finished difference Result 346 states and 350 transitions. [2019-05-23 11:17:50,470 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:17:50,470 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 239 [2019-05-23 11:17:50,470 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:50,471 INFO L146 ILogger]: With dead ends: 346 [2019-05-23 11:17:50,471 INFO L146 ILogger]: Without dead ends: 257 [2019-05-23 11:17:50,473 INFO L146 ILogger]: 0 DeclaredPredicates, 325 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:17:50,473 INFO L146 ILogger]: Start minimizeSevpa. Operand 257 states. [2019-05-23 11:17:50,476 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 257 to 252. [2019-05-23 11:17:50,477 INFO L146 ILogger]: Start removeUnreachable. Operand 252 states. [2019-05-23 11:17:50,477 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 252 states to 252 states and 254 transitions. [2019-05-23 11:17:50,477 INFO L146 ILogger]: Start accepts. Automaton has 252 states and 254 transitions. Word has length 239 [2019-05-23 11:17:50,478 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:50,478 INFO L146 ILogger]: Abstraction has 252 states and 254 transitions. [2019-05-23 11:17:50,478 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:17:50,478 INFO L146 ILogger]: Start isEmpty. Operand 252 states and 254 transitions. [2019-05-23 11:17:50,479 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 247 [2019-05-23 11:17:50,479 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:50,479 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:50,480 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:50,480 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:50,480 INFO L146 ILogger]: Analyzing trace with hash 411644638, now seen corresponding path program 21 times [2019-05-23 11:17:50,480 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:50,480 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:50,481 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:50,481 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:50,481 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:50,501 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:51,200 INFO L146 ILogger]: Checked inductivity of 1964 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2019-05-23 11:17:51,201 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:51,201 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 11:17:51,210 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:51,443 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-05-23 11:17:51,443 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:51,446 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:17:51,448 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:52,362 INFO L146 ILogger]: Checked inductivity of 1964 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2019-05-23 11:17:52,381 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:52,381 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 23] total 68 [2019-05-23 11:17:52,382 INFO L146 ILogger]: Interpolant automaton has 68 states [2019-05-23 11:17:52,382 INFO L146 ILogger]: Constructing interpolant automaton starting with 68 interpolants. [2019-05-23 11:17:52,382 INFO L146 ILogger]: CoverageRelationStatistics Valid=717, Invalid=3839, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:17:52,382 INFO L146 ILogger]: Start difference. First operand 252 states and 254 transitions. Second operand 68 states. [2019-05-23 11:17:56,010 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:56,011 INFO L146 ILogger]: Finished difference Result 365 states and 370 transitions. [2019-05-23 11:17:56,011 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2019-05-23 11:17:56,011 INFO L146 ILogger]: Start accepts. Automaton has 68 states. Word has length 246 [2019-05-23 11:17:56,012 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:56,013 INFO L146 ILogger]: With dead ends: 365 [2019-05-23 11:17:56,013 INFO L146 ILogger]: Without dead ends: 276 [2019-05-23 11:17:56,014 INFO L146 ILogger]: 0 DeclaredPredicates, 356 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3471 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3245, Invalid=14047, Unknown=0, NotChecked=0, Total=17292 [2019-05-23 11:17:56,014 INFO L146 ILogger]: Start minimizeSevpa. Operand 276 states. [2019-05-23 11:17:56,018 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 276 to 266. [2019-05-23 11:17:56,018 INFO L146 ILogger]: Start removeUnreachable. Operand 266 states. [2019-05-23 11:17:56,019 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 266 states to 266 states and 268 transitions. [2019-05-23 11:17:56,019 INFO L146 ILogger]: Start accepts. Automaton has 266 states and 268 transitions. Word has length 246 [2019-05-23 11:17:56,019 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:56,019 INFO L146 ILogger]: Abstraction has 266 states and 268 transitions. [2019-05-23 11:17:56,019 INFO L146 ILogger]: Interpolant automaton has 68 states. [2019-05-23 11:17:56,019 INFO L146 ILogger]: Start isEmpty. Operand 266 states and 268 transitions. [2019-05-23 11:17:56,020 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 261 [2019-05-23 11:17:56,021 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:56,021 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:56,021 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:56,021 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:56,021 INFO L146 ILogger]: Analyzing trace with hash -1507999648, now seen corresponding path program 22 times [2019-05-23 11:17:56,021 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:56,022 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:56,022 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:56,022 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:56,022 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:56,042 INFO L146 ILogger]: Conjunction of SSA is unsat